@inproceedings{HoeflingSchirraSpohretal.2013,
  author    = {Hoefling, J. and Schirra, Julian and Spohr, A. and Sch{\"a}fer, Daniel},
  title     = {Induced drag computation with wake model schemes for highly non-planar wing systems},
  series = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart},
  booktitle = {Deutscher Luft- und Raumfahrtkongress 2013 : 10.9. - 12.9.2013, Stuttgart},
  publisher = {Dt. Ges. f{\"u}r Luft- und Raumfahrt},
  address   = {Bonn},
  organization    = {Deutscher Luft- und Raumfahrtkongress <62, 2013, Stuttgart>},
  pages     = {1 -- 10},
  year      = {2013},
  language  = {en}
}
@article{HodelOrzatiMarsoetal.2000,
  author    = {Hodel, U. and Orzati, A. and Marso, M. and Homann, O. and Fox, A. and Hart, A. v. d. and F{\"o}rster, Arnold and Kordos, P. and L{\"u}th, H.},
  title     = {A novel InAlAs/InGaAs layer structure for monolithically integrated photoreceiver},
  series = {Conference Proceedings: 2000 International Conference on Indium Phosphide and related materials},
  journal   = {Conference Proceedings: 2000 International Conference on Indium Phosphide and related materials},
  publisher = {IEEE Service Center},
  address   = {Piscataway, NJ},
  isbn      = {0-7803-6320-5},
  pages     = {466 -- 469},
  year      = {2000},
  language  = {en}
}
@article{HirschfeldLustfeldReisseletal.2010,
  author    = {Hirschfeld, Julian A. and Lustfeld, Hans and Reißel, Martin and Steffen, Bernhard},
  title     = {A novel scheme for precise diagnostics and effective stabilization of currents in a fuel cell stack},
  series = {International Journal of Energy Research},
  volume    = {34},
  journal   = {International Journal of Energy Research},
  number    = {3},
  publisher = {Wiley},
  address   = {London},
  issn      = {0363-907X},
  doi       = {10.1002/er.1662},
  pages     = {293 -- 301},
  year      = {2010},
  abstract  = {A novel scheme for detecting inhomogeneous internal currents in a fuel cell stack is presented. In this paper the scheme is investigated for the case that the flow field plates consist of graphite. Then plates of high conductivity, e.g. aluminium between the flow field plates together with small slits in these plates have three effects: (a) Whenever a local inhomogeneity of the electric current occurs at a particular cell in the stack, this will induce a surface current close to that cell perpendicular to the averaged current. This current can be detected. (b) The plates of high conductivity completely prevent the inhomogeneities from spreading to neighbouring cells. (c) Even at the particular cell the inhomogeneity is suppressed as far as possible. Thus this scheme leads to much better diagnostic possibilities and at the same time reduces electric instabilities to an extent, where they probably become harmless. This scheme will first be explained for a simple model to clarify the idea. However, very precise three dimensional computations using realistic parameters are presented, corroborating the results of the simple model.},
  language  = {en}
}
@article{HirschfeldLustfeldReisseletal.2010,
  author    = {Hirschfeld, Julian A. and Lustfeld, Hans and Reißel, Martin and Steffen, Bernhard},
  title     = {Tomographic diagnostics of current distributions in a fuel cell stack},
  series = {International Journal of Energy Research},
  volume    = {34},
  journal   = {International Journal of Energy Research},
  number    = {3},
  publisher = {Wiley},
  address   = {London},
  issn      = {0363-907X},
  doi       = {10.1002/er.1634},
  pages     = {284 -- 292},
  year      = {2010},
  abstract  = {A novel tomographic scheme for analysing the state of any single membrane electrode assembly (MEA) in a stack is suggested. Plates of very high conductivity placed between every fuel cell and slitted in an appropriate manner cause surface currents at well-defined locations of the stack. We show that knowing these surface currents, information about anomalies of the currents in a MEA can be obtained using the methods of tomography. The results are mathematically not unique. However, when assuming plausible defect structures, one can exclude improbable deficiencies by applying a special form of simulated annealing. We present numerical calculations of typical examples demonstrating that the essential defects of the MEA in any single cell of the stack can be detected and their extent can be determined.},
  language  = {en}
}
@article{Hirschberg1994,
  author    = {Hirschberg, Rainer},
  title     = {Computer-Aided-Engineering in der Technischen Geb{\"a}udeausr{\"u}stung},
  series = {computer spezial (1994)},
  journal   = {computer spezial (1994)},
  pages     = {32 -- 37},
  year      = {1994},
  language  = {en}
}
@article{Hirschberg2008,
  author    = {Hirschberg, Rainer},
  title     = {Decentral pumps in heating systems - a new hydraulic approac},
  series = {1st International Rotating Equipment Conference - Pumps and Compressors, 9th Pump Users International Forum, 9. Internationales Pumpenanwenderforum, Final Report, D{\"u}sseldorf, DE, 28.-29. Oct, 2008},
  journal   = {1st International Rotating Equipment Conference - Pumps and Compressors, 9th Pump Users International Forum, 9. Internationales Pumpenanwenderforum, Final Report, D{\"u}sseldorf, DE, 28.-29. Oct, 2008},
  publisher = {-},
  pages     = {1 -- 10},
  year      = {2008},
  language  = {en}
}
@inproceedings{HirschAhlbrinkPitzPaaletal.2011,
  author    = {Hirsch, Tobias and Ahlbrink, Nils and Pitz-Paal, Robert and Teixeira Boura, Cristiano Jos{\´e} and Hoffschmidt, Bernhard and Gall, Jan and Abel, Dirk and Nolte, Vera and Wirsum, Manfred and Andersson, Joel and Diehl, Moritz},
  title     = {Dynamic simulation of a solar tower system with open volumetric receiver - a review on the ViCERP project},
  series = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  booktitle = {SolarPACES 2011 : concentrating solar power and chemical energy systems : 20 - 23 September, 2011, Granada, Spain},
  address   = {Granada},
  pages     = {1 CD-ROM},
  year      = {2011},
  language  = {en}
}
@inproceedings{HirschAbelBohnetal.2009,
  author    = {Hirsch, Tobias and Abel, Dirk and Bohn, Dieter and Diehl, Moritz and Hoffschmidt, Bernhard and Pitz-Paal, Robert},
  title     = {The Virtual Institute for Central Receiver Power Plants - vICERP},
  series = {SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings},
  booktitle = {SolarPACES 2009 : electricity, fuels and clean water powered by the sun ; 15 - 18 September 2009, Berlin, Germany ; the 15th SolarPACES conference ; proceedings},
  publisher = {Deutsches Zentrum f. Luft- u. Raumfahrt},
  address   = {Stuttgart},
  isbn      = {9783000287558},
  pages     = {1 CD-ROM},
  year      = {2009},
  language  = {en}
}
@inproceedings{HirschWahle1978,
  author    = {Hirsch, G. and Wahle, Michael},
  title     = {Design criteria for dynamic vibration absorbers with regard to the nonproportional damping},
  series = {Proceedings / The Third US National Conference on Wind Engineering Research, February 26 - March 1, 1978, University of Florida, Gainesville},
  booktitle = {Proceedings / The Third US National Conference on Wind Engineering Research, February 26 - March 1, 1978, University of Florida, Gainesville},
  editor    = {Leadon, Bernhard M.},
  publisher = {Univ. of Florida, Div. of Continuing Education Publ.},
  address   = {Gainsville, Fla.},
  pages     = {507 -- 510},
  year      = {1978},
  language  = {en}
}
@inproceedings{HippeFingerGoettenetal.2020,
  author    = {Hippe, Jonas and Finger, Felix and G{\"o}tten, Falk and Braun, Carsten},
  title     = {Propulsion System Qualification of a 25 kg VTOL-UAV: Hover Performance of Single and Coaxial Rotors and Wind-Tunnel Experiments on Cruise Propellers},
  series = {Deutscher Luft- und Raumfahrtkongress - DLRK 2020},
  booktitle = {Deutscher Luft- und Raumfahrtkongress - DLRK 2020},
  year      = {2020},
  abstract  = {This paper presents an approach for UAV propulsion system qualification and validation on the example of FH Aachen's 25 kg cargo UAV "PhoenAIX". Thrust and power consumption are the most important aspects of a propulsion system's layout. In the initial design phase, manufacturers' data has to be trusted, but the validation of components is an essential step in the design process. This process is presented in this paper. The vertical takeoff system is designed for efficient hover; therefore, performance under static conditions is paramount. Because an octo-copter layout with coaxial rotors is considered, the impact of this design choice is analyzed. Data on thrust, voltage stability, power consumption, rotational speed, and temperature development of motors and controllers are presented for different rotors. The fixed-wing propulsion system is designed for efficient cruise flight. At the same time, a certain static thrust has to be provided, as the aircraft needs to accelerate to cruise speed. As for the hover-system, data on different propellers is compared. The measurements were taken for static conditions, as well as for different inflow velocities, using the FH-Aachen's wind-tunnel.},
  language  = {en}
}
@incollection{HinkeVervierBrauneretal.2022,
  author    = {Hinke, Christian and Vervier, Luisa and Brauner, Philipp and Schneider, Sebastian and Steuer-Dankert, Linda and Ziefle, Martina and Leicht-Scholten, Carmen},
  title     = {Capability configuration in next generation manufacturing},
  series = {Forecasting next generation manufacturing : digital shadows, human-machine collaboration, and data-driven business models},
  booktitle = {Forecasting next generation manufacturing : digital shadows, human-machine collaboration, and data-driven business models},
  publisher = {Springer},
  address   = {Cham},
  isbn      = {978-3-031-07733-3},
  doi       = {10.1007/978-3-031-07734-0_6},
  pages     = {95 -- 106},
  year      = {2022},
  abstract  = {Industrial production systems are facing radical change in multiple dimensions. This change is caused by technological developments and the digital transformation of production, as well as the call for political and social change to facilitate a transformation toward sustainability. These changes affect both the capabilities of production systems and companies and the design of higher education and educational programs. Given the high uncertainty in the likelihood of occurrence and the technical, economic, and societal impacts of these concepts, we conducted a technology foresight study, in the form of a real-time Delphi analysis, to derive reliable future scenarios featuring the next generation of manufacturing systems. This chapter presents the capabilities dimension and describes each projection in detail, offering current case study examples and discussing related research, as well as implications for policy makers and firms. Specifically, we discuss the benefits of capturing expert knowledge and making it accessible to newcomers, especially in highly specialized industries. The experts argue that in order to cope with the challenges and circumstances of today's world, students must already during their education at university learn how to work with AI and other technologies. This means that study programs must change and that universities must adapt their structural aspects to meet the needs of the students.},
  language  = {en}
}
@inproceedings{HingleyDikta2019,
  author    = {Hingley, Peter and Dikta, Gerhard},
  title     = {Finding a well performing box-jenkins forecasting model for annualised patent filings counts},
  series = {International Symposium on Forecasting, Thessaloniki, Greece, June 2019},
  booktitle = {International Symposium on Forecasting, Thessaloniki, Greece, June 2019},
  pages     = {24 Folien},
  year      = {2019},
  language  = {en}
}
@article{HillgaertnerStoniesPeieretal.2005,
  author    = {Hillg{\"a}rtner, Michael and Stonies, R. and Peier, D. and Voges, E.},
  title     = {Design of Low Cost Antennas for Reverberation Chambers},
  series = {Proceedings of the 16th International Zurich Symposium on Electromagnetic Compatibility : [EMC Week 2005, Zurich, Switzerland, February 13 - 18 ; technical exhibition on EMC and RF/microwave Measurements and Instrumentation (February 15 - 17)] / [Laboratory for Electromagnetic Fields and Microwave Electronics, Swiss Federal Institute of Technology Zurich]},
  journal   = {Proceedings of the 16th International Zurich Symposium on Electromagnetic Compatibility : [EMC Week 2005, Zurich, Switzerland, February 13 - 18 ; technical exhibition on EMC and RF/microwave Measurements and Instrumentation (February 15 - 17)] / [Laboratory for Electromagnetic Fields and Microwave Electronics, Swiss Federal Institute of Technology Zurich]},
  publisher = {ETH-Zentrum-IFH},
  address   = {Z{\"u}rich},
  isbn      = {3-9521199-9-7},
  pages     = {1 CD-ROM. ; 12 cm},
  year      = {2005},
  language  = {en}
}
@article{HillgaertnerPeier2006,
  author    = {Hillg{\"a}rtner, Michael and Peier, Dirk},
  title     = {Design of a Measurement Setup for the Impedance of Low-Resistance Plate-Conductors in the RF-Range},
  series = {Proceedings of the 10th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM '06, Bra\&\#351;ov, May 18 - 20, 2006 / ed. by The Transilvania University of Bra\&\#351;ov, Faculty of Electrical Engineering and Computer Science. [Ed. Mihai Cernat .\&\#804;] . - Vol. 1: Keynote addresses, electrotechnics},
  journal   = {Proceedings of the 10th International Conference on Optimization of Electrical and Electronic Equipment, OPTIM '06, Bra\&\#351;ov, May 18 - 20, 2006 / ed. by The Transilvania University of Bra\&\#351;ov, Faculty of Electrical Engineering and Computer Science. [Ed. Mihai Cernat .\&\#804;] . - Vol. 1: Keynote addresses, electrotechnics},
  address   = {Bra\&\#351;ov},
  isbn      = {978-973-635703-9},
  pages     = {59 -- 64},
  year      = {2006},
  language  = {en}
}
@article{HillgaertnerKappel2006,
  author    = {Hillg{\"a}rtner, Michael and Kappel, U.},
  title     = {Radiating Impedance of Mains Cabling During Emissions Testing},
  series = {EMC Europe 2006 Barcelona : International Symposium on Electromagnetic Compatibility; September 4 - 8, 2006, Campus Nord, Technical University of Catalonia, Barcelona, Spain / [organized by Technical University of Catalonia (UPC) ... Ed. and publ. by: Ferran Silva ...]. - Vol. 1: Proceedings 1},
  journal   = {EMC Europe 2006 Barcelona : International Symposium on Electromagnetic Compatibility; September 4 - 8, 2006, Campus Nord, Technical University of Catalonia, Barcelona, Spain / [organized by Technical University of Catalonia (UPC) ... Ed. and publ. by: Ferran Silva ...]. - Vol. 1: Proceedings 1},
  address   = {Barcelona},
  isbn      = {84-689-9439-1},
  pages     = {17 -- 22},
  year      = {2006},
  language  = {en}
}
@article{Hillgaertner2010,
  author    = {Hillg{\"a}rtner, Michael},
  title     = {Normative Regulations},
  series = {ECPE Cluster Seminar EMC in Hybrid and Electric Vehicles : 18 May 2010, Fraunhofer Institute Erlangen},
  journal   = {ECPE Cluster Seminar EMC in Hybrid and Electric Vehicles : 18 May 2010, Fraunhofer Institute Erlangen},
  publisher = {European Center for Power Electronics},
  address   = {N{\"u}rnberg},
  pages     = {1 CD-ROM},
  year      = {2010},
  language  = {en}
}
@article{HillenUnglaubenWirtz2002,
  author    = {Hillen, Walter and Unglauben, F. and Wirtz, G.},
  title     = {Architectures and Modeling of Distributed Image Information Systems. Unglauben, F.; Hillen, W.; Wirtz, G.},
  series = {Proceedings : July 14 - 18, 2002, Orlando, Florida, USA ; [jointly with the 8th International Conference on Information Systems Analysis and Synthesis (ISAS 2002)] / organized by IIIS, International Institute of Informatics and Systemics. Ed. by Nagib Callaos},
  journal   = {Proceedings : July 14 - 18, 2002, Orlando, Florida, USA ; [jointly with the 8th International Conference on Information Systems Analysis and Synthesis (ISAS 2002)] / organized by IIIS, International Institute of Informatics and Systemics. Ed. by Nagib Callaos},
  publisher = {IIIS},
  address   = {Orlando, Fla.},
  isbn      = {9800781501},
  year      = {2002},
  language  = {en}
}
@article{HillenUnglaubenMurdfield2001,
  author    = {Hillen, Walter and Unglauben, F. and Murdfield, M.},
  title     = {Study of Database Connections for a Java Medical Image Viewer. Unglauben, F.; Hillen, W.; Murdfield, M.},
  series = {Intelligente, innovative Produktentwicklung f{\"u}r die industrielle Praxis. Bl{\"u}mel, Bernd; Stenzel, Horst [Hrsg.]},
  journal   = {Intelligente, innovative Produktentwicklung f{\"u}r die industrielle Praxis. Bl{\"u}mel, Bernd; Stenzel, Horst [Hrsg.]},
  publisher = {Forschungverbund Multimedia an Fachhochschulen},
  address   = {K{\"o}ln},
  pages     = {29 -- 33},
  year      = {2001},
  language  = {en}
}
@article{HillenSchmittBockemuehl1995,
  author    = {Hillen, Walter and Schmitt, W. and Bockem{\"u}hl, J.},
  title     = {Signal-to-Noise Performance of a digital dental X-ray Detector},
  series = {Computer assisted radiology : proceedings of the International Symposium on Computer and Communication Systems for Image Guided Diagnosis and Therapy / CAR '95 Berlin, June 21 - 24, 1995. Ed. by H. U. Lemke},
  journal   = {Computer assisted radiology : proceedings of the International Symposium on Computer and Communication Systems for Image Guided Diagnosis and Therapy / CAR '95 Berlin, June 21 - 24, 1995. Ed. by H. U. Lemke},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {3-540-59177-X},
  pages     = {LXXIV, 1442 S. : Ill., graph. Darst.},
  year      = {1995},
  language  = {en}
}
@article{HillenSchiebelZaengel1988,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {A selenium-based detector for digital slot-radiography},
  series = {Medical Imaging II},
  journal   = {Medical Imaging II},
  pages     = {253},
  year      = {1988},
  language  = {en}
}
@article{HillenSchiebelZaengel1986,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {Image quality in selenium-based digital radiography. Schiebel, U.; Hillen, W.; Zaengel, T.},
  series = {Medical Imaging},
  journal   = {Medical Imaging},
  pages     = {176},
  year      = {1986},
  language  = {en}
}
@article{HillenSchiebelZaengel1987,
  author    = {Hillen, Walter and Schiebel, U. and Zaengel, T.},
  title     = {Imaging performance of a digital storage phosphor system},
  series = {Medical Physics. 14 (1987), H. 5},
  journal   = {Medical Physics. 14 (1987), H. 5},
  isbn      = {0094-2405},
  pages     = {744 -- 751},
  year      = {1987},
  language  = {en}
}
@article{HillenRuppSchiebeletal.1989,
  author    = {Hillen, Walter and Rupp, S. and Schiebel, U. and Zaengel, Thomas T.},
  title     = {Imaging performance of a selenium-based detector for high-resolution radiography},
  series = {Medical Imaging III: Image Formation},
  journal   = {Medical Imaging III: Image Formation},
  isbn      = {0-8194-0125-0},
  pages     = {296},
  year      = {1989},
  language  = {en}
}
@article{HillenLehmannHornetal.1996,
  author    = {Hillen, Walter and Lehmann, T. and Horn, H. and Schmitt, W.},
  title     = {Identification of Dental Fixtures in Intraoral X-rays. Lehmann, T.; Hillen, W.; Horn, H.; Schmitt, W.},
  series = {Medical imaging 1996 : image processing ; 12 - 15 February 1996, Newport Beach, California / Murray H. Loew ... chairs/ed.},
  journal   = {Medical imaging 1996 : image processing ; 12 - 15 February 1996, Newport Beach, California / Murray H. Loew ... chairs/ed.},
  publisher = {SPIE - The International Society for Optical Engineering},
  address   = {Bellingham, Wash.},
  isbn      = {0-8194-2085-9},
  pages     = {584 -- 584},
  year      = {1996},
  language  = {en}
}
@article{HillenLehmannHornetal.1995,
  author    = {Hillen, Walter and Lehmann, T. and Horn, H. and Schmitt, W.},
  title     = {IDEFIX - Identification of Dental Fixtures. Lehmann, T.; Hillen, W.; Horn, H.; Schmitt, W.},
  series = {5th European Congress on Dental and Maxillo-Facial Radiology : 30th Annual meeting of Working Group for Dental Radiology in the German Scientific Society for Dentistry, November 8-11, 1995, Cologne : abstracts},
  journal   = {5th European Congress on Dental and Maxillo-Facial Radiology : 30th Annual meeting of Working Group for Dental Radiology in the German Scientific Society for Dentistry, November 8-11, 1995, Cologne : abstracts},
  pages     = {[120] B. : graph. Darst.},
  year      = {1995},
  language  = {en}
}
@article{HillenEckenbachQuadfliegetal.1991,
  author    = {Hillen, Walter and Eckenbach, W. and Quadflieg, Peter and Zaengel, Thomas T.},
  title     = {Signal-to-noise performance of a CsI fluorescent screen},
  series = {Medical Imaging V: Image physics},
  journal   = {Medical Imaging V: Image physics},
  isbn      = {0-8194-0538-8},
  pages     = {120 -- 131},
  year      = {1991},
  language  = {en}
}
@article{HillenBarryPongs1997,
  author    = {Hillen, Walter and Barry, J. C. and Pongs, U. M.},
  title     = {Algorithm for Purkinje Image I and IV and Limbus Centre Location. Barry, J. C.; Pongs, U. M.; Hillen, W.},
  series = {Computers in Biology and Medicine. 27 (1997), H. 6},
  journal   = {Computers in Biology and Medicine. 27 (1997), H. 6},
  isbn      = {0010-4825},
  pages     = {515 -- 531},
  year      = {1997},
  language  = {en}
}
@article{HillenAlperSelverFischeretal.2007,
  author    = {Hillen, Walter and Alper Selver, M. and Fischer, Felix and Kuntalp, Mehmet},
  title     = {A software tool for interactive generation, representation, and systematical storage of transfer functions for 3D medical images / Alper Selver, M. ; Fischer, Felix ; Kuntalp, Mehmet ; Hillen, Walter},
  series = {Computer Methods and Programs in Biomedicine. 86 (2007), H. 3},
  journal   = {Computer Methods and Programs in Biomedicine. 86 (2007), H. 3},
  publisher = {-},
  isbn      = {0169-2607},
  pages     = {270 -- 280},
  year      = {2007},
  language  = {en}
}
@article{Hillen1979,
  author    = {Hillen, Walter},
  title     = {Properties of hadron final states in e+e\&\#8722; annihilation at 13 GeV and 17 GeV center of mass energies. TASSO Collaboration},
  series = {Physics Letters B. 83 (1979), H. 2},
  journal   = {Physics Letters B. 83 (1979), H. 2},
  isbn      = {0370-2693},
  pages     = {261 -- 266},
  year      = {1979},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {A measurement of \&\#963;tot(e+e\&\#8722; \&\#8594; hadrons) for cm energies between 12.0 and 36.7 GeV. TASSO Collaboration},
  series = {Physics Letters B. 113 (1982), H. 6},
  journal   = {Physics Letters B. 113 (1982), H. 6},
  pages     = {499 -- 508},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {Scale braking in inclusive charged particle production by e--e+ annihilation. TASSO Collaboration},
  series = {Physics Letters B. 114 (1982), H. 1},
  journal   = {Physics Letters B. 114 (1982), H. 1},
  isbn      = {0370-2693},
  pages     = {65 -- 70},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {Charged pion production in e--e+ annihilation at 14, 22 and 34 GeV c.m. energies. TASSO Collaboration},
  series = {Physics Letters B. 113 (1982), H. 1},
  journal   = {Physics Letters B. 113 (1982), H. 1},
  isbn      = {0370-2693},
  pages     = {98 -- 104},
  year      = {1982},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Charged pion, kaon, proton and antiproton production in high energy e+e\&\#8722; annihilations. TASSO Collaboration},
  series = {Physics Letters B. 94 (1980), H. 3},
  journal   = {Physics Letters B. 94 (1980), H. 3},
  isbn      = {0370-2693},
  pages     = {444 -- 449},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Comparison of e+e\&\#8722; annihilation with QCD and determination of the strong coupling constant . TASSO Collaboration},
  series = {Physics Letters B. 94 (1980), H. 3},
  journal   = {Physics Letters B. 94 (1980), H. 3},
  isbn      = {0370-2693},
  pages     = {437 -- 443},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {K0 production in e+e\&\#8722; annihilations at 30 GeV center of mass energy. TASSO Collaboration},
  series = {Physics Letters B. 94 (1980), H. 1},
  journal   = {Physics Letters B. 94 (1980), H. 1},
  isbn      = {0370-2693},
  pages     = {91 -- 95},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Test of QED in e+e\&\#8722; annihilation at energies between 12 and 31.6 GeV. TASSO Collaboration},
  series = {Physics Letters B. 94 (1980), H. 2},
  journal   = {Physics Letters B. 94 (1980), H. 2},
  isbn      = {0370-2693},
  pages     = {259 -- 265},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Rapid growth of charged particle multiplicity in high energy e+e\&\#8722; annihilations. TASSO Collaboration},
  series = {Physics Letters B. 89 (1980), H. 3-4},
  journal   = {Physics Letters B. 89 (1980), H. 3-4},
  isbn      = {0370-2693},
  pages     = {418 -- 422},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Production and properties of the \&\#964;-lepton in e+e\&\#8722; annihilation at C.M. energies from 12 to 31.6 GeV. TASSO Collaboration},
  series = {Physics Letters B. 92 (1980), H. 1-2},
  journal   = {Physics Letters B. 92 (1980), H. 1-2},
  isbn      = {0370-2693},
  pages     = {199 -- 205},
  year      = {1980},
  language  = {en}
}
@article{Hillen1979,
  author    = {Hillen, Walter},
  title     = {Evidence for planar events in e+e\&\#8722; annihilation at high energies. TASSO Collaboration},
  series = {Physics Letters B. 86 (1979), H. 2},
  journal   = {Physics Letters B. 86 (1979), H. 2},
  isbn      = {0370-2693},
  pages     = {243 -- 249},
  year      = {1979},
  language  = {en}
}
@article{Hillen1979,
  author    = {Hillen, Walter},
  title     = {Energy scan for narrow states in e+e\&\#8722; annihilation at C.M. energies between 29.90 and 31.46 GeV. TASSO Collaboration},
  series = {Physics Letters B. 88 (1979), H. 1-2},
  journal   = {Physics Letters B. 88 (1979), H. 1-2},
  isbn      = {0370-2693},
  pages     = {199 -- 202},
  year      = {1979},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {Charge asymmetry and weak interaction effects in e+e\&\#8722;\&\#8594;\&\#956;+\&\#956;\&\#8722; and e+e\&\#8722;\&\#8594;\&\#964;+\&\#964;\&\#8722; . TASSO Collaboration},
  series = {Physics Letters B. 110 (1982), H. 2},
  journal   = {Physics Letters B. 110 (1982), H. 2},
  isbn      = {0370-2693},
  pages     = {173 -- 180},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {\&\#960;0 production by e+e\&\#8722; annihilation at 14 and 34 GeV c.m. energy . TASSO Collaboration},
  series = {Physics Letters B. 108 (1982), H. 1},
  journal   = {Physics Letters B. 108 (1982), H. 1},
  isbn      = {0370-2693},
  pages     = {71 -- 76},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {Exclusive proton-antiproton production in two photon collisions . TASSO Collaboration},
  series = {Physics Letters B. 108 (1982), H. 1},
  journal   = {Physics Letters B. 108 (1982), H. 1},
  isbn      = {0370-2693},
  pages     = {67 -- 70},
  year      = {1982},
  language  = {en}
}
@article{Hillen1982,
  author    = {Hillen, Walter},
  title     = {High pT hadron production in photon-photon collisions . TASSO Collaboration},
  series = {Physics Letters B. 107 (1982), H. 4},
  journal   = {Physics Letters B. 107 (1982), H. 4},
  isbn      = {0370-2693},
  pages     = {290 -- 296},
  year      = {1982},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {\&\#923;, Image production in e+e- annihilation at 33 GeV centre of mass energy. TASSO Collaboration},
  series = {Physics Letters B. 105 (1981), H. 4},
  journal   = {Physics Letters B. 105 (1981), H. 4},
  isbn      = {0370-2693},
  pages     = {75 -- 80},
  year      = {1981},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {Evidence for charged primary partons in e+e\&\#8722; \&\#8594; 2 jets. TASSO Collaboration},
  series = {Physics Letters B. 100 (1981), H. 4},
  journal   = {Physics Letters B. 100 (1981), H. 4},
  isbn      = {0370-2693},
  pages     = {357 -- 363},
  year      = {1981},
  language  = {en}
}
@article{Hillen1981,
  author    = {Hillen, Walter},
  title     = {Search for new sequential leptons in e+e- annihilation at petra energies. TASSO Collaboration},
  series = {Physics Letters B. 99 (1981), H. 2},
  journal   = {Physics Letters B. 99 (1981), H. 2},
  isbn      = {0370-2693},
  pages     = {163 -- 168},
  year      = {1981},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {Evidence for a spin-1 gluon in three-jet events. TASSO Collaboration},
  series = {Physics Letters B. 97 (1980), H. 3-4},
  journal   = {Physics Letters B. 97 (1980), H. 3-4},
  isbn      = {0370-2693},
  pages     = {453 -- 458},
  year      = {1980},
  language  = {en}
}
@article{Hillen1980,
  author    = {Hillen, Walter},
  title     = {RHO-RHO production by two photon scattering. TASSO Collaboration},
  series = {Physics Letters B. 97 (1980), H. 3-4},
  journal   = {Physics Letters B. 97 (1980), H. 3-4},
  isbn      = {0370-2693},
  pages     = {448 -- 452},
  year      = {1980},
  language  = {en}
}
@misc{HilleStumpfMayntzetal.2023,
  author    = {Hille, Sebastian and Stumpf, Eike and Mayntz, Joscha and Dahmann, Peter},
  title     = {Prediction of sound exposure caused by a landing motor glider with recuperating propellers},
  series = {AIAA SCITECH 2023 Forum},
  journal   = {AIAA SCITECH 2023 Forum},
  publisher = {AIAA},
  address   = {Reston, Va.},
  doi       = {10.2514/6.2023-0211},
  year      = {2023},
  abstract  = {This paper presents an approach to predicting the sound exposure on the ground caused by a landing aircraft with recuperating propellers. The noise source along the trajectory of a flight specified for a steeper approach is simulated based on measurements of sound power levels and additional parameters of a single propeller placed in a wind tunnel. To validate the measured data/measurement results, these simulations are also supported by overflight measurements of a test aircraft. It is shown that the simple source models of propellers do not provide fully satisfactory results since the sound levels are estimated too low. Nevertheless, with a further reference comparison, margins for an acceptable increase in the sound power level of the aircraft on its now steeper approach path could be estimated. Thus, in this case, a +7 dB increase in SWL would not increase the SEL compared to the conventional approach within only 2 km ahead of the airfield.},
  language  = {en}
}
@misc{HezelFrauenrathRenzetal.2010,
  author    = {Hezel, Fabian and Frauenrath, Tobias and Renz, Wolfgang and Schulz-Menger, Jeanette and Niendorf, Thoralf},
  title     = {Feasibility of CINE Myocardial T2* Mapping Using Susceptibility Weighted Gradient-Echo Imaging at 7.0 T},
  series = {2010 ISMRM-ESMRMB joint annual meeting},
  journal   = {2010 ISMRM-ESMRMB joint annual meeting},
  issn      = {1545-4428},
  year      = {2010},
  abstract  = {This study is designed to demonstrate the promise of susceptibility weighted 2D CINE FLASH and T2* Mapping of the heart at 7T.},
  language  = {en}
}
@article{HeuermannThalayasingam2009,
  author    = {Heuermann, Holger and Thalayasingam, K.},
  title     = {Novel vector non-linear measurement system for intermodulation measurements / Thalayasingam, K.; Heuermann, H.},
  series = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  journal   = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {978-1-4244-4748-0},
  pages     = {926 -- 929},
  year      = {2009},
  language  = {en}
}
@article{HeuermannStolleSchiek1995,
  author    = {Heuermann, Holger and Stolle, Reinhard and Schiek, Burkhard},
  title     = {Novel Algorithms for FMCW Range Finding with Microwaves. Stolle, R.; Heuermann, H.; Schiek, B.},
  pages     = {129 -- 132},
  year      = {1995},
  language  = {en}
}
@article{HeuermannSchiek1995,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {The double-LNN Calibration technique for scattering parameter measurements of microstrip devices},
  series = {Conference proceedings},
  journal   = {Conference proceedings},
  publisher = {NEXUS House},
  address   = {Kent},
  pages     = {343 -- 347},
  year      = {1995},
  language  = {en}
}
@article{HeuermannSchiek1994,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {Calibration of network analyser measurements with leakage errors},
  series = {Electronics letters. 30 (1994), H. 1},
  journal   = {Electronics letters. 30 (1994), H. 1},
  isbn      = {0013-5194},
  pages     = {52 -- 53},
  year      = {1994},
  language  = {en}
}
@article{HeuermannSchiek1994,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {Results of Network Analyzer Measurements with Leakage Errors Corrected with the TMS-15-Term Procedure},
  pages     = {1361 -- 1364},
  year      = {1994},
  language  = {en}
}
@article{HeuermannSchiek1994,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {Scattering Parameter Measurements of Microstrip Devices using the Double-LNN Calibration Technique},
  series = {Conference proceedings : [Palais des Festivals et des Congr{\`e}s Cannes, France, 5 - 8 September 1994]},
  journal   = {Conference proceedings : [Palais des Festivals et des Congr{\`e}s Cannes, France, 5 - 8 September 1994]},
  publisher = {Nexus Business Communications},
  address   = {Swanley},
  isbn      = {0-9518032-5-5},
  year      = {1994},
  language  = {en}
}
@article{HeuermannSchiek1992,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {LNN (Line-Network-Network): Verfahren zur Kalibrierung von Netzwerkanalysatoren},
  series = {Kleinheubacher Berichte : Vortr{\"a}ge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 36. 1992 (1992)},
  journal   = {Kleinheubacher Berichte : Vortr{\"a}ge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 36. 1992 (1992)},
  pages     = {327 -- 335},
  year      = {1992},
  language  = {en}
}
@article{HeuermannSchiek1997,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {Line Network Network (LNN): an alternative in-fixture calibration procedure},
  series = {IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 45 (1997), H. 3},
  journal   = {IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 45 (1997), H. 3},
  isbn      = {0018-9480},
  pages     = {408 -- 413},
  year      = {1997},
  language  = {en}
}
@article{HeuermannSchiek1992,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {The In-Fixture Calibration Procedure Line-Network-Network-LNN},
  series = {Conference proceedings : monday 6th to thursday 9th september 1993, Palacio de Congresos, Madrid, Spain ; [the international conference and exhibition designed for the Microwave Community]},
  journal   = {Conference proceedings : monday 6th to thursday 9th september 1993, Palacio de Congresos, Madrid, Spain ; [the international conference and exhibition designed for the Microwave Community]},
  publisher = {Reed Exhibition Companies},
  address   = {Tunbridge Wells},
  isbn      = {0-946821-23-2},
  pages     = {500 -- 505},
  year      = {1992},
  language  = {en}
}
@article{HeuermannSchiek1992,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {A Fast and Robust Procedure for the Determination of the Scattering Parameters for Network Analyzer Calibration},
  address   = {Paris},
  pages     = {373 -- 374},
  year      = {1992},
  language  = {en}
}
@article{HeuermannSchiek1994,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {Error Corrected Impedance Measurements with a Network Analyzer},
  pages     = {125 -- 126},
  year      = {1994},
  language  = {en}
}
@article{HeuermannSchiek1993,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {LNN( Line-Network-Network): The In-Fixture Calibration Procedure},
  pages     = {149 -- 149},
  year      = {1993},
  language  = {en}
}
@article{HeuermannSchiek1992,
  author    = {Heuermann, Holger and Schiek, Burkhard},
  title     = {A Generalization of the Txx Network Analyzer Self-Calibration Procedure},
  series = {Conference proceedings : monday 24th to thursday 27th august 1992, Helsinki University of Technology, Espoo, Finland ; [the international conference and exhibition designed for the Microwave Community]. Vol. 2},
  journal   = {Conference proceedings : monday 24th to thursday 27th august 1992, Helsinki University of Technology, Espoo, Finland ; [the international conference and exhibition designed for the Microwave Community]. Vol. 2},
  publisher = {Microwave Exhibitions and Publishers},
  address   = {Tunbridge Wells},
  isbn      = {0-946821-77-1},
  pages     = {907 -- 912},
  year      = {1992},
  language  = {en}
}
@article{HeuermannSchiek1993,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {Procedures for the Determination of the Scattering Parameters for Network Analyzer Calibration},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 42 (1993), H. 2},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 42 (1993), H. 2},
  isbn      = {0018-9456},
  pages     = {528 -- 531},
  year      = {1993},
  language  = {en}
}
@article{HeuermannSchiek1994,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {Robust Algorithms for Txx Network Analyzer Self-Calibration Procedures},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 43 (1994), H. 1},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 43 (1994), H. 1},
  isbn      = {0018-9456},
  pages     = {18 -- 23},
  year      = {1994},
  language  = {en}
}
@article{HeuermannSchiek1997,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {Results of network analyzer measurements with leakage errors-corrected with direct calibration techniques},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  isbn      = {0018-9456},
  pages     = {1120 -- 1127},
  year      = {1997},
  language  = {en}
}
@article{HeuermannSchiek1995,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {Error corrected impedance measurements with a network analyzer},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 44 (1995), H. 2},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 44 (1995), H. 2},
  isbn      = {0018-9456},
  pages     = {295 -- 299},
  year      = {1995},
  language  = {en}
}
@article{HeuermannSchiek1997,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {15-term self-calibration methods for the error-correction of on-wafer measurements},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  isbn      = {0018-9456},
  pages     = {1105 -- 1110},
  year      = {1997},
  language  = {en}
}
@inproceedings{HeuermannSadeghfamFinger2013,
  author    = {Heuermann, Holger and Sadeghfam, Arash and Finger, Torsten},
  title     = {Alternative ignition system based on microwave plasma},
  series = {Advanced ignition systems for gasoline engines : [Vortr{\"a}ge der 1st International Conference Advanced Ignition Systems for Gasoline Engines - 1. Internationale Tagung Z{\"u}ndsysteme f{\"u}r Ottomotoren, 12.-13. November 2012, Berlin]},
  booktitle = {Advanced ignition systems for gasoline engines : [Vortr{\"a}ge der 1st International Conference Advanced Ignition Systems for Gasoline Engines - 1. Internationale Tagung Z{\"u}ndsysteme f{\"u}r Ottomotoren, 12.-13. November 2012, Berlin]},
  publisher = {Expert-Verl.},
  address   = {Renningen},
  organization    = {International Conference Advanced Ignition Systems for Gasoline Engines <1, 2012, Berlin>},
  isbn      = {9783816931904},
  pages     = {95 -- 103},
  year      = {2013},
  language  = {en}
}
@article{HeuermannSadeghfamBoehm2005,
  author    = {Heuermann, Holger and Sadeghfam, Arash and Boehm, H.},
  title     = {Ultra Compact Multi-Mode Filter with Novel Rat-Race Inductor. Sadeghfam, Arash; Heuermann, Holger; Boehm, H.},
  series = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 2},
  journal   = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 2},
  publisher = {Horizon House Publ},
  address   = {London},
  isbn      = {2-9600551-0-1},
  pages     = {4 pp.},
  year      = {2005},
  language  = {en}
}
@article{HeuermannSadeghfam2008,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {Electrically tunable bandpass filter with integrated carrier suppression for UHF RFID systems / Sadeghfam, Arash ; Heuermann, Holger},
  series = {European Microwave Conference, 2008, EuMC 2008, 38th},
  journal   = {European Microwave Conference, 2008, EuMC 2008, 38th},
  isbn      = {978-2-87487-006-4},
  pages     = {1727 -- 1730},
  year      = {2008},
  language  = {en}
}
@article{HeuermannSadeghfam2007,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {On the design of multimode integrated circuits in multilayered processes / Sadeghfam, A. ; Heuermann, H.},
  series = {European Microwave Conference, 2007, 9-12 Oct. 2007},
  journal   = {European Microwave Conference, 2007, 9-12 Oct. 2007},
  isbn      = {978-2-87487-001-9},
  pages     = {516 -- 519},
  year      = {2007},
  language  = {en}
}
@article{HeuermannSadeghfam2008,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {Electrically tunable bandpass filter with integrated carrier suppression for UHF RFID systems / Sadeghfam, Arash ; Heuermann, Holger},
  series = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  journal   = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  isbn      = {978-2-87487-008-8},
  pages     = {306 -- 309},
  year      = {2008},
  language  = {en}
}
@article{HeuermannSadeghfam2009,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {Enhanced system architecture for rugged wide band data transmission / Sadeghfam, A. ; Heuermann, H.},
  series = {European Radar Conference, 2009 : EuRAD 2009 ; Sept. 30 - Oct. 2 2009, Rome, Italy ; part of the European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association},
  journal   = {European Radar Conference, 2009 : EuRAD 2009 ; Sept. 30 - Oct. 2 2009, Rome, Italy ; part of the European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {978-2-87487-014-9},
  pages     = {347 -- 350},
  year      = {2009},
  language  = {en}
}
@article{HeuermannSadeghfam2004,
  author    = {Heuermann, Holger and Sadeghfam, Arash},
  title     = {Novel balanced inductor for compact differential systems / Sadeghfam, Arash; Heuermann, Holger},
  series = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association},
  journal   = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association},
  publisher = {Horizon House Publ.},
  address   = {London},
  isbn      = {1-580-53992-0},
  pages     = {709 -- 712},
  year      = {2004},
  language  = {en}
}
@article{HeuermannRumiantsevSchott2004,
  author    = {Heuermann, Holger and Rumiantsev, A. and Schott, S.},
  title     = {Advanced on-wafer multiport calibration methods for mono- and mixed-mode device characterization},
  series = {On wafer characterization : 63rd ARFTG conference digest, spring 2004, 11 June 2004, Fort Worth, TX / Automatic RF Techniques Group. [Conference chair: John Cable. Publication chair: J. G. Burns]},
  journal   = {On wafer characterization : 63rd ARFTG conference digest, spring 2004, 11 June 2004, Fort Worth, TX / Automatic RF Techniques Group. [Conference chair: John Cable. Publication chair: J. G. Burns]},
  publisher = {IEEE Operations Center},
  address   = {Piscataway, NJ},
  isbn      = {0-7803-8371-0},
  pages     = {91 -- 96},
  year      = {2004},
  language  = {en}
}
@article{HeuermannPetersSchmitzetal.2005,
  author    = {Heuermann, Holger and Peters, N. and Schmitz, T. and Sadeghfam, Arash},
  title     = {Concept of Balanced Antennas with Load-Invariant Base Impedance Using a Two Element LC-Coupler. Peters, N., Schmitz, Th., Sadeghfam, A., Heuermann, H.},
  series = {Proceedings of the European microwave association : journal of the European microwave association},
  journal   = {Proceedings of the European microwave association : journal of the European microwave association},
  publisher = {PLUS},
  address   = {Pisa},
  pages     = {117 -- 122},
  year      = {2005},
  language  = {en}
}
@article{HeuermannLuenebach2005,
  author    = {Heuermann, Holger and L{\"u}nebach, M.},
  title     = {A Novel Dual-Mode-Design for Push-Push Oscillators with Improved Phase Noise Performance. Heuermann, Holger; L{\"u}nebach, M.},
  series = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 1},
  journal   = {Conference proceedings : 3 - 7 October 2005, CNIT la D{\´e}fense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 1},
  publisher = {Horizon House Publ},
  address   = {London},
  isbn      = {2-9600551-0-1},
  pages     = {4 pp.},
  year      = {2005},
  language  = {en}
}
@article{HeuermannIbrahimHillebrand2007,
  author    = {Heuermann, Holger and Ibrahim, Irfan and Hillebrand, J.},
  title     = {Vector-Signal-Generator with Two ?'?'-PLL's / Ibrahim, I. ; Hillebrand, J. ; Heuermann, H.},
  series = {European Conference on Wireless Technologies, 2007. ECWT 2007 ; 8 - 10 October 2007 Munich, Germany},
  journal   = {European Conference on Wireless Technologies, 2007. ECWT 2007 ; 8 - 10 October 2007 Munich, Germany},
  isbn      = {978-2-87487-003-3},
  pages     = {1 -- 4},
  year      = {2007},
  language  = {en}
}
@article{HeuermannIbrahim2008,
  author    = {Heuermann, Holger and Ibrahim, Irfan},
  title     = {Novel theory and architecture of a vector signal generator implemented with two PLLs / Ibrahim, Irfan ; Heuermann, Holger},
  series = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  journal   = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  isbn      = {978-2-87487-008-8},
  pages     = {85 -- 88},
  year      = {2008},
  language  = {en}
}
@article{HeuermannIbrahim2009,
  author    = {Heuermann, Holger and Ibrahim, Irfan},
  title     = {Improvements in the flicker noise reduction technique for osillator designs / Ibrahim, Irfan ; Heuermann, Holger},
  series = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  journal   = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {978-1-4244-4748-0},
  pages     = {1215 -- 1218},
  year      = {2009},
  language  = {en}
}
@article{HeuermannHoltrup2009,
  author    = {Heuermann, Holger and Holtrup, Stephan},
  title     = {Fundamentals and ignition of a microplasma at 2.45 GHZ / Holtrup, Stephan ; Heuermann, Holger},
  series = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  journal   = {European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {978-1-4244-4748-0},
  pages     = {1607 -- 1609},
  year      = {2009},
  language  = {en}
}
@article{HeuermannHillebrandSadeghfam2008,
  author    = {Heuermann, Holger and Hillebrand, J{\"u}rgen and Sadeghfam, Arash},
  title     = {Novel Concept of a Digital SigmaDelta-PLL-Phase-Shift-Modulator / Hillebrand, J{\"u}rgen ; Sadeghfam, Arash ; Heuermann, Holger},
  isbn      = {978-3-8007-3086-5},
  pages     = {123 -- 126},
  year      = {2008},
  language  = {en}
}
@inproceedings{HeuermannHarzheimMuehmel2021,
  author    = {Heuermann, Holger and Harzheim, Thomas and M{\"u}hmel, Marc},
  title     = {A maritime harmonic radar search and rescue system using passive and active tags},
  series = {2020 17th European Radar Conference (EuRAD)},
  booktitle = {2020 17th European Radar Conference (EuRAD)},
  publisher = {IEEE},
  address   = {New York, NY},
  isbn      = {978-2-87487-061-3},
  doi       = {10.1109/EuRAD48048.2021.00030},
  pages     = {73 -- 76},
  year      = {2021},
  abstract  = {This article introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested attached to life jackets and a rescue boat. This system was able to detect and range the active tags up to a range of 5800 m in tests on the Baltic Sea with an antenna input power of only 100 W. All electronic GHz components of the system, excluding the S-band power amplifier, were custom developed for this purpose. Special attention is given to the performance and conceptual differences between passive and active tags used in the system and integration with a maritime X-band navigation radar is demonstrated.},
  language  = {en}
}
@article{HeuermannHarzheimCronenbroeck2021,
  author    = {Heuermann, Holger and Harzheim, Thomas and Cronenbroeck, Tobias},
  title     = {First SIMO harmonic radar based on the SFCW concept and the HR transfer function},
  series = {Remote sensing},
  volume    = {13},
  journal   = {Remote sensing},
  number    = {24},
  publisher = {MDPI},
  address   = {Basel},
  issn      = {2072-4292},
  doi       = {10.3390/rs13245088},
  pages     = {23 Seiten},
  year      = {2021},
  abstract  = {This paper presents a new SIMO radar system based on a harmonic radar (HR) stepped frequency continuous wave (SFCW) architecture. Simple tags that can be electronically individually activated and deactivated via a DC control voltage were developed and combined to form an MO array field. This HR operates in the entire 2.45 GHz ISM band for transmitting the illumination signal and receives at twice the stimulus frequency and bandwidth centered around 4.9 GHz. This paper presents the development, the basic theory of a HR system for the characterization of objects placed into the propagation path in-between the radar and the reflectors (similar to a free-space measurement with a network analyzer) as well as first measurements performed by the system. Further detailed measurement series will be made available later on to other researchers to develop AI and machine learning based signal processing routines or synthetic aperture radar algorithms for imaging, object recognition, and feature extraction. For this purpose, the necessary information is published in this paper. It is explained in detail why this SIMO-HR can be an attractive solution augmenting or replacing existing systems for radar measurements in production technology for material under test measurements and as a simplified MIMO system. The novel HR transfer function, which is a basis for researchers and developers for material characterization or imaging algorithms, is introduced and metrologically verified in a well traceable coaxial setup.},
  language  = {en}
}
@inproceedings{HeuermannFinger2014,
  author    = {Heuermann, Holger and Finger, Torsten},
  title     = {2.45 GHz Plasma Powered Spark Plug by Thermal and EM-Optimization},
  pages     = {30 Folien},
  year      = {2014},
  language  = {en}
}
@incollection{HeuermannFinger2014,
  author    = {Heuermann, Holger and Finger, Torsten},
  title     = {Microwave Spark Plug for Very High-Pressure Conditions},
  series = {Ignition systems for gasoline engines},
  booktitle = {Ignition systems for gasoline engines},
  editor    = {G{\"u}nther, Michael},
  publisher = {DCM Druck},
  address   = {Meckenheim},
  pages     = {269 -- 282},
  year      = {2014},
  language  = {en}
}
@article{HeuermannErkens2004,
  author    = {Heuermann, Holger and Erkens, Holger},
  title     = {Blocking structures for mixed-mode systems. / Erkens, Holger ; Heuermann, Holger},
  series = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association. Vol. 1},
  journal   = {Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association. Vol. 1},
  publisher = {Horizon House Publ.},
  address   = {London},
  isbn      = {1-580-53992-0},
  pages     = {297 -- 300},
  year      = {2004},
  language  = {en}
}
@article{HeuermannErkens2006,
  author    = {Heuermann, Holger and Erkens, H.},
  title     = {Novel RF switch concepts for differential wireless communications frontends. Erkens, H.; Heuermann, H.},
  series = {IEEE Transactions on Microwave Theory and Techniques. 54 (2006), H. 6, Part 1},
  journal   = {IEEE Transactions on Microwave Theory and Techniques. 54 (2006), H. 6, Part 1},
  isbn      = {0018-9480},
  pages     = {2376 -- 2382},
  year      = {2006},
  language  = {en}
}
@article{HeuermannErkens2007,
  author    = {Heuermann, Holger and Erkens, H.},
  title     = {Mixed-Mode Chain Scattering Parameters: Theory and Verification},
  series = {IEEE Transactions on Microwave Theory and Techniques},
  volume    = {55},
  journal   = {IEEE Transactions on Microwave Theory and Techniques},
  number    = {8},
  publisher = {IEEE},
  address   = {New York},
  isbn      = {0018-9480},
  doi       = {10.1109/TMTT.2007.902587},
  pages     = {1704 -- 1708},
  year      = {2007},
  abstract  = {Chain scattering parameters or T-parameters are a useful tool for calculating cascaded two-ports. With the increasing importance of mixed-mode S-parameters, a need for converting the T-parameters from their unbalanced form into a balanced form emerges for suiting both common and differential mode waves, as well as the mode conversion. This paper presents the derivation of the equations for transformations between mixed-mode S- and T-parameters for a mixed-mode two-port. Although derived in a way very similar to monomode T-parameters, no simplifications were necessary. Measurement results exemplify the quality of the T-parameter transformation under real-life conditions.},
  language  = {en}
}
@article{HeuermannEmmrichBongartz2022,
  author    = {Heuermann, Holger and Emmrich, Thomas and Bongartz, Simon},
  title     = {Microwave spark plug to support ignitions with high compression ratios},
  series = {IEEE Transactions on Plasma Science},
  journal   = {IEEE Transactions on Plasma Science},
  number    = {Early Access},
  publisher = {IEEE},
  issn      = {1939-9375},
  doi       = {10.1109/TPS.2022.3183690},
  pages     = {1 -- 6},
  year      = {2022},
  abstract  = {Upcoming gasoline engines should run with a larger number of fuels beginning from petrol over methanol up to gas by a wide range of compression ratios and a homogeneous charge. In this article, the microwave (MW) spark plug, based on a high-speed frequency hopping system, is introduced as a solution, which can support a nitrogen compression ratio up to 1:39 in a chamber and more. First, an overview of the high-speed frequency hopping MW ignition and operation system as well as the large number of applications are presented. Both gives an understanding of this new base technology for MW plasma generation. Focus of the theoretical part is the explanation of the internal construction of the spark plug, on the achievable of the high voltage generation as well as the high efficiency to hold the plasma. In detail, the development process starting with circuit simulations and ending with the numerical multiphysics field simulations is described. The concept is evaluated with a reference prototype covering the frequency range between 2.40 and 2.48 GHz and working over a large power range from 20 to 200 W. A larger number of different measurements starting by vector hot-S11 measurements and ending by combined working scenarios out of hot temperature, high pressure and charge motion are winding up the article. The limits for the successful pressure tests were given by the pressure chamber. Pressures ranged from 1 to 39 bar and charge motion up to 25 m/s as well as temperatures from 30◦ to 125◦.},
  language  = {en}
}
@article{HeuermannBaumannFauthetal.1994,
  author    = {Heuermann, Holger and Baumann, F.-M. and Fauth, G. and Albert, M.},
  title     = {Results of Network Analyzer Measurements with Leakage Errors Corrected with the TMS-15-Term Procedure},
  series = {On-Line Moisture Analysis of Raw Coal},
  journal   = {On-Line Moisture Analysis of Raw Coal},
  pages     = {1361 -- 1364},
  year      = {1994},
  language  = {en}
}
@article{Heuermann1996,
  author    = {Heuermann, Holger},
  title     = {Sure Methods of On-Wafer Scattering Parameter Measurements with Self-Calibration Procedures},
  pages     = {136 -- 145},
  year      = {1996},
  language  = {en}
}
@article{Heuermann2003,
  author    = {Heuermann, Holger},
  title     = {GSOLT: the calibration procedure for all multi-port vector network analyzers},
  series = {IEEE MTT-S International Microwave Symposium digest : Philadelphia, Pennsylvania, 8 - 13 June 2003 ; [including: 2003 International Microwave Symposium digest, vol. 1-3, RF Integrated Circuit Symposium digest, Automatic RF Techniques Group Symposium digest . Vol. 3},
  journal   = {IEEE MTT-S International Microwave Symposium digest : Philadelphia, Pennsylvania, 8 - 13 June 2003 ; [including: 2003 International Microwave Symposium digest, vol. 1-3, RF Integrated Circuit Symposium digest, Automatic RF Techniques Group Symposium digest . Vol. 3},
  publisher = {IEEE},
  address   = {Piscataway, NJ},
  isbn      = {0-780-37696-X},
  pages     = {1815 -- 1818},
  year      = {2003},
  language  = {en}
}
@article{Heuermann1997,
  author    = {Heuermann, Holger},
  title     = {Microwave On-Wafer Measurements with Activ Needle Probe Tips},
  pages     = {208 -- 214},
  year      = {1997},
  language  = {en}
}
@article{Heuermann2006,
  author    = {Heuermann, Holger},
  title     = {Multiport S-parameter calculation from two-port network analyzer measurements with or without switch matrix},
  series = {ARFTG Conference, 2006 67th, San Francisco, CA},
  journal   = {ARFTG Conference, 2006 67th, San Francisco, CA},
  isbn      = {978-0-7803-9529-9},
  pages     = {219 -- 222},
  year      = {2006},
  language  = {en}
}
@article{Heuermann2006,
  author    = {Heuermann, Holger},
  title     = {Verringerung des Phasenrauschens von Oszillatoren durch Dual-Mode-Resonatoren},
  series = {HF-Report. 20 (2006), H. 5-6},
  journal   = {HF-Report. 20 (2006), H. 5-6},
  isbn      = {1431-827X},
  pages     = {43 -- 48},
  year      = {2006},
  language  = {en}
}
@article{Heuermann2008,
  author    = {Heuermann, Holger},
  title     = {Dual mode radio: A new tranceiver architecture for UWB and 60 GHz-applications},
  series = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  journal   = {European Conference on Wireless Technology, 2008. EuWiT 2008.},
  isbn      = {978-2-87487-008-8},
  pages     = {147 -- 150},
  year      = {2008},
  language  = {en}
}
@article{Heuermann2008,
  author    = {Heuermann, Holger},
  title     = {Calibration of a Network Analyzer Without a Thru Connection for Nonlinear and Multiport Measurements},
  series = {IEEE Transactions on Microwave Theory and Techniques. 56 (2008), H. 11, 1},
  journal   = {IEEE Transactions on Microwave Theory and Techniques. 56 (2008), H. 11, 1},
  isbn      = {0018-9480},
  pages     = {2505 -- 2510},
  year      = {2008},
  language  = {en}
}