@inproceedings{c25e6f256d3f4319b86909765575acc0,
title = "Tune-All Substrate-Integrated-Waveguide (SIW) Bandpass Filters",
abstract = "This paper reports on a new type of substrate-integrated-waveguide (SIW) bandpass filters (BPFs) with multiple levels of transfer function adaptivity. They are based on series-cascaded in-line coaxial resonators and a coaxial-resonator-based transmission-zero (TZ) generation section. The proposed architecture allows the realization of the following reconfigurable characteristics: i) tunable center frequency with either constant absolute bandwidth (BW) or constant fractional bandwidth (FBW), ii) tunable BW, and iii) an intrinsically switched-off response. Alternative realization schemes using parallel and series resonators are discussed with the purpose of improving the stopband performance. For proof-of-concept demonstration purposes an L-band SIW-based BPF prototype was designed, manufactured and measured. It exhibited the following RF performance characteristics. Center frequency tuning between 1.24 and 1.8 GHz (1.5: tuning ratio), BW tuning between 190 and 78 MHz (2.44:1 tuning ratio) and intrinsic switching-off with > 30 dB of isolation in the range between 0.75 and 2.25 GHz.",
keywords = "band-pass filter (BPF), cavity filter, reconfigurable filter, substrate-integrated-waveguide (SIW) filter, tunable bandwidth, tunable filter, tunable frequency",
author = "Martin Deng and Dimitra Psychogiou",
note = "Publisher Copyright: {\textcopyright} 2019 European Microwave Association (EuMA).; 49th European Microwave Conference, EuMC 2019 ; Conference date: 01-10-2019 Through 03-10-2019",
year = "2019",
month = oct,
doi = "10.23919/EuMC.2019.8910828",
language = "English",
series = "2019 49th European Microwave Conference, EuMC 2019",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "876--879",
booktitle = "2019 49th European Microwave Conference, EuMC 2019",
address = "United States",
}