TY  - JOUR
A1  - Heuermann, Holger
A1  - Erkens, H.
T1  - Mixed-Mode Chain Scattering Parameters: Theory and Verification
JF  - IEEE Transactions on Microwave Theory and Techniques
N2  - 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.
Y1  - 2007
SN  - 0018-9480
U6  - http://dx.doi.org/10.1109/TMTT.2007.902587
VL  - 55
IS  - 8
SP  - 1704
EP  - 1708
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Erkens, Holger
T1  - Blocking structures for mixed-mode systems. / Erkens, Holger ; Heuermann, Holger
JF  - 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
Y1  - 2004
SN  - 1-580-53992-0
N1  - European Microwave Conference ; (34, 2004, Amsterdam) ; European Microwave Week ; (7, 2004, Amsterdam)
SP  - 297
EP  - 300
PB  - Horizon House Publ.
CY  - London
ER  - 
TY  - CHAP
A1  - Heuermann, Holger
A1  - Finger, Torsten
T1  - 2.45 GHz Plasma Powered Spark Plug by Thermal and EM-Optimization
Y1  - 2014
N1  - Ansys High Frequency Simulation Conference - AHFSC 2014, Munich; 02/2014
ER  - 
TY  - CHAP
A1  - Heuermann, Holger
A1  - Finger, Torsten
ED  - Günther, Michael
T1  - Microwave Spark Plug for Very High-Pressure Conditions
T2  - Ignition systems for gasoline engines
Y1  - 2014
SP  - 269
EP  - 282
PB  - DCM Druck
CY  - Meckenheim
ER  - 
TY  - CHAP
A1  - Heuermann, Holger
A1  - Harzheim, Thomas
A1  - Mühmel, Marc
T1  - A maritime harmonic radar search and rescue system using passive and active tags
T2  - 2020 17th European Radar Conference (EuRAD)
KW  - Harmonic Radar
KW  - Rescue System
KW  - Frequency Doubler
KW  - Transponder
KW  - Tag
Y1  - 2021
SN  - 978-2-87487-061-3
U6  - http://dx.doi.org/10.1109/EuRAD48048.2021.00030
N1  - Proceedings of the 17th European Radar Conference, 
13th - 15th January 2021, Utrecht, Netherlands
SP  - 73
EP  - 76
PB  - IEEE
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Hillebrand, Jürgen
A1  - Sadeghfam, Arash
T1  - Novel Concept of a Digital SigmaDelta-PLL-Phase-Shift-Modulator / Hillebrand, Jürgen ; Sadeghfam, Arash ; Heuermann, Holger
Y1  - 2008
SN  - 978-3-8007-3086-5
N1  - Microwave Conference (GeMIC), 2008 German
SP  - 123
EP  - 126
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
A1  - Ibrahim, Irfan
T1  - Novel theory and architecture of a vector signal generator implemented with two PLLs / Ibrahim, Irfan ; Heuermann, Holger
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 85
EP  - 88
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  - JOUR
A1  - Heuermann, Holger
A1  - Ibrahim, Irfan
A1  - Hillebrand, J.
T1  - Vector-Signal-Generator with Two ¿¿-PLL's / Ibrahim, I. ; Hillebrand, J. ; Heuermann, H.
JF  - European Conference on Wireless Technologies, 2007. ECWT 2007  ; 8 - 10 October 2007 Munich, Germany
Y1  - 2007
SN  - 978-2-87487-003-3
SP  - 1
EP  - 4
ER  -