TY - GEN
T1 - Digital Modeling of Microwave Filters With Coupled-Line Sections
AU - Munoz-Ferreras, Jose Maria
AU - Psychogiou, Dimitra
AU - Gomez-Garcia, Roberto
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/5
Y1 - 2019/5
N2 - A digital-modeling technique for the transmission scattering parameters of frequency-periodic RF/microwave passive filters has been recently proposed. By means of the direct matching of the ideally-synthesized transfer function of the filter and that of its associated discrete-time linear time-invariant (LTI) system, the corresponding coefficients ak and bk are identifiable. Hence, zero-pole diagrams in the Z-plane are derived, which enables a reinterpretation of these frequency-periodic microwave filters. This work demonstrates that this digital matching is also possible for frequency-periodic filters based on coupled-line sections. In particular, this discrete-time modeling is applied to a classic third-order coupled-line bandpass filter and to a signal-interference ultra-wideband (UWB) bandpass filtering section. In addition, their zero-pole diagrams are analyzed and discussed in detail.
AB - A digital-modeling technique for the transmission scattering parameters of frequency-periodic RF/microwave passive filters has been recently proposed. By means of the direct matching of the ideally-synthesized transfer function of the filter and that of its associated discrete-time linear time-invariant (LTI) system, the corresponding coefficients ak and bk are identifiable. Hence, zero-pole diagrams in the Z-plane are derived, which enables a reinterpretation of these frequency-periodic microwave filters. This work demonstrates that this digital matching is also possible for frequency-periodic filters based on coupled-line sections. In particular, this discrete-time modeling is applied to a classic third-order coupled-line bandpass filter and to a signal-interference ultra-wideband (UWB) bandpass filtering section. In addition, their zero-pole diagrams are analyzed and discussed in detail.
KW - Coupled-line section
KW - discrete-time modeling
KW - frequency-periodic filter
KW - linear-time invariant (LTI) system
KW - microwave filter
KW - signal-interference filter
KW - Z-plane
UR - https://www.scopus.com/pages/publications/85073779361
U2 - 10.1109/NEMO.2019.8853744
DO - 10.1109/NEMO.2019.8853744
M3 - Conference proceeding
AN - SCOPUS:85073779361
T3 - 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2019
BT - 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2019
Y2 - 29 May 2019 through 31 May 2019
ER -