TY  - JOUR
A1  - Heuermann, Holger
A1  - Peters, N.
A1  - Schmitz, T.
A1  - Sadeghfam, Arash
T1  - Concept of Balanced Antennas with Load-Invariant Base Impedance Using a Two Element LC-Coupler. Peters, N., Schmitz, Th., Sadeghfam, A., Heuermann, H.
JF  - Proceedings of the European microwave association : journal of the European microwave association
Y1  - 2005
SP  - 117
EP  - 122
PB  - PLUS
CY  - Pisa
ER  - 
TY  - CHAP
A1  - Stephan, Achim
A1  - Heuermann, Holger
A1  - Prantner, Michael
T1  - Cutting human tissue with novel atmospheric-pressure microwave plasma jet
T2  - 46th European Microwave Conference (EuMC)
Y1  - 2016
SN  - 978-2-87487-043-9
U6  - http://dx.doi.org/10.1109/EuMC.2016.7824490
SP  - 902
EP  - 905
PB  - IEEE
ER  - 
TY  - CHAP
A1  - Elgamal, Abdelrahman
A1  - Heuermann, Holger
T1  - Design and Development of a Hot S-Parameter Measurement System for Plasma and Magnetron Applications
T2  - 2020 German Microwave Conference (GeMiC), Cottbus, Germany, 2020
Y1  - 2020
SN  - 978-3-9820397-1-8
SP  - 124
EP  - 127
ER  - 
TY  - CHAP
A1  - Sadeghfam, Arash
A1  - Sadeghi-Ahangar, A.
A1  - Elgamal, Abdelrahman
A1  - Heuermann, Holger
T1  - Design and Development of a Novel Self-Igniting Microwave Plasma Jet for Industrial Applications
T2  - IEEE MTT-S International Microwave Symposium Digest
Y1  - 2019
SN  - 978-172811309-8
SP  - 63
EP  - 66
ER  - 
TY  - JOUR
A1  - Schopp, Christoph
A1  - Rohrbach, Felix
A1  - Langer, Luc
A1  - Heuermann, Holger
T1  - Detection of welding wire length by active S11 measurement
JF  - IEEE Transactions on Plasma Science
N2  - A novel method to determine the extruded length of a metallic wire for a directed energy deposition (DED) process using a microwave (MW) plasma jet with a straight-through wire feed is presented. The method is based on the relative comparison of the measured frequency response obtained by the large-signal scattering parameter (Hot-S) technique. In the practical working range, repeatability of less than 6% for a nonactive plasma and 9% for the active plasma state is found. Measurements are conducted with a focus on a simple solution to decrease the processing time and reduce the integration time of the process into the existing hardware. It is shown that monitoring a single frequency for magnitude and phase changes is sufficient to achieve good accuracy. A combination of different measurement values to determine the length is possible. The applicability to different diameter of the same material is shown as well as a contact detection of the wire and metallic substrate.
KW  - Circuit simulation
KW  - Hot S-parameter
KW  - Modeling
KW  - Plasma
KW  - Plasma diagnostics
Y1  - 2024
U6  - http://dx.doi.org/10.1109/TPS.2024.3356659
SN  - 0093-3813 (Print)
SN  - 1939-9375 (Online)
IS  - Early Access
SP  - 1
EP  - 6
PB  - IEEE
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Dual mode radio: A new tranceiver architecture for UWB and 60 GHz-applications
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 147
EP  - 150
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, Arash
T1  - Electrically tunable bandpass filter with integrated carrier suppression for UHF RFID systems / Sadeghfam, Arash ; Heuermann, Holger
JF  - European Microwave Conference, 2008, EuMC 2008, 38th
Y1  - 2008
SN  - 978-2-87487-006-4
SP  - 1727
EP  - 1730
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, Arash
T1  - Electrically tunable bandpass filter with integrated carrier suppression for UHF RFID systems / Sadeghfam, Arash ; Heuermann, Holger
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 306
EP  - 309
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
T1  - Electrodeless low pressure lamp with bi-static matching at 2.45 GHz
T2  - 2013 European Microwave Conference (EuMC) , Nuremberg
Y1  - 2013
SN  - 978-1-4799-0264-4
SP  - 881
EP  - 884
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, A.
T1  - Enhanced system architecture for rugged wide band data transmission / Sadeghfam, A. ; Heuermann, H.
JF  - 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
Y1  - 2009
SN  - 978-2-87487-014-9
N1  - Proceedings of the 6th European Radar Conference
SP  - 347
EP  - 350
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, B.
T1  - Error corrected impedance measurements with a network analyzer
JF  - IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 44 (1995), H. 2
Y1  - 1995
SN  - 0018-9456
SP  - 295
EP  - 299
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - Error Corrected Impedance Measurements with a Network Analyzer
Y1  - 1994
N1  - 1994 Conference on Precision Electromagnetic Measurements digest : 27 June - 1 July 1994, Boulder, Colorado, USA / Organized by National Institute of Standards and Technology. Ed. by Edie DeWeese
SP  - 125
EP  - 126
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Harzheim, Thomas
A1  - Cronenbroeck, Tobias
T1  - First SIMO harmonic radar based on the SFCW concept and the HR transfer function
JF  - Remote sensing
N2  - 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.
KW  - MUT measurement; scanner
KW  - transponder
KW  - SFCW
KW  - harmonic radar
KW  - nonlinear radar
Y1  - 2021
U6  - http://dx.doi.org/10.3390/rs13245088
SN  - 2072-4292
N1  - This article belongs to the Special Issue "Nonlinear Junction Detection and Harmonic Radar"
VL  - 13
IS  - 24
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Holtrup, Stephan
T1  - Fundamentals and ignition of a microplasma at 2.45 GHZ / Holtrup, Stephan ; Heuermann, Holger
JF  - 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
Y1  - 2009
SN  - 978-1-4244-4748-0
N1  - EuMC 2009
SP  - 1607
EP  - 1609
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - GSOLT: the calibration procedure for all multi-port vector network analyzers
JF  - 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
Y1  - 2003
SN  - 0-780-37696-X
N1  - Nebent.: 2003 IEEE MTT-S International Microwave Symposium
SP  - 1815
EP  - 1818
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Ibrahim, Irfan
T1  - Improvements in the flicker noise reduction technique for osillator designs / Ibrahim, Irfan ; Heuermann, Holger
JF  - 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
Y1  - 2009
SN  - 978-1-4244-4748-0
N1  - EuMC 2009
SP  - 1215
EP  - 1218
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
A1  - Holtrup, S.
T1  - Investigation on efficacy optimization of RF-driven automotive D-lamps
T2  - 44th European Microwave Conference (EuMC),2014, Rome
Y1  - 2014
U6  - http://dx.doi.org/10.1109/EuMC.2014.6986645
SP  - 1154
EP  - 1157
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - Line Network Network (LNN): an alternative in-fixture calibration procedure
JF  - IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 45 (1997), H. 3
Y1  - 1997
SN  - 0018-9480
SP  - 408
EP  - 413
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - LNN (Line-Network-Network): Verfahren zur Kalibrierung von Netzwerkanalysatoren
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 36. 1992 (1992)
Y1  - 1992
SP  - 327
EP  - 335
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - LNN( Line-Network-Network): The In-Fixture Calibration Procedure
Y1  - 1993
N1  - XXIVth General Assembly of the International URSI, Kyoto
SP  - 149
EP  - 149
ER  -