TY - GEN
T1 - Coupling-Routing-Diagram Model of Non-Reciprocal Bandpass Filter with Single-Band-Forward and Dual-Band-Backward Behavior
AU - Gomez-Garcia, Roberto
AU - Munoz-Ferreras, Jose Maria
AU - Yang, Li
AU - Psychogiou, Dimitra
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - An original approach to design non-reciprocal RF bandpass filters (BPFs) with spectrally-imbricated single-and dual-passband filtering transfer functions for the forward-and backward-signal-propagation directions, respectively, is reported. It exploits a two-path resonating stage, in which an isolator is inserted at one of its electrical paths in the backward direction to achieve this type of frequency-selective non-reciprocity. The operational foundations of the proposed non-reciprocal single-band-forward/dual-band-backward BPF in terms of coupling-routing diagram, which is generalized to model the isolator node, are provided. In addition, theoretical examples of the extension of this concept to higher-order filtering topologies by using multi-stage in-series-cascade schemes and to BPF designs with increased number of passbands for each transmission direction are shown.
AB - An original approach to design non-reciprocal RF bandpass filters (BPFs) with spectrally-imbricated single-and dual-passband filtering transfer functions for the forward-and backward-signal-propagation directions, respectively, is reported. It exploits a two-path resonating stage, in which an isolator is inserted at one of its electrical paths in the backward direction to achieve this type of frequency-selective non-reciprocity. The operational foundations of the proposed non-reciprocal single-band-forward/dual-band-backward BPF in terms of coupling-routing diagram, which is generalized to model the isolator node, are provided. In addition, theoretical examples of the extension of this concept to higher-order filtering topologies by using multi-stage in-series-cascade schemes and to BPF designs with increased number of passbands for each transmission direction are shown.
KW - Active filter
KW - Active isolator
KW - Bandpass filter (BPF)
KW - Coupling-routing diagram
KW - Multi-band filter
KW - Non-reciprocal filter
UR - https://www.scopus.com/pages/publications/85124130777
U2 - 10.1109/IMFW49589.2021.9642280
DO - 10.1109/IMFW49589.2021.9642280
M3 - Conference proceeding
AN - SCOPUS:85124130777
T3 - 2021 IEEE MTT-S International Microwave Filter Workshop, IMFW 2021
SP - 155
EP - 158
BT - 2021 IEEE MTT-S International Microwave Filter Workshop, IMFW 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE MTT-S International Microwave Filter Workshop, IMFW 2021
Y2 - 17 November 2021 through 19 November 2021
ER -