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Compact multi‐mode UWB microstrip filter using meander resonator
Author(s) -
Zhang Tianliang,
Zhou Liguo,
Yang Kai,
Dang Wei,
Hua Kezhao,
Yang Changlin,
Chen Peng
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29957
Subject(s) - passband , resonator , return loss , microstrip , insertion loss , electronic engineering , band pass filter , center frequency , acoustics , filter (signal processing) , bandwidth (computing) , telecommunications , physics , materials science , computer science , electrical engineering , engineering , optoelectronics , antenna (radio)
ABSTRACT In this paper, traditional microstrip resonator is meandered to construct a compact multi‐mode resonator (MMR). The meander resonator is very simple but convenient for ultra‐wide band (UWB) passband filter. And then, a UWB microstrip filter with six transmission poles in the passband is achieved by using only two resonators. The filter has an amplitude frequency response with a passband from 1.8 GHz to 4.7 GHz, the simulated return loss in passband is better than −20dB, and the measured one is better than −19dB. The tested insertion loss at center frequency is about 0.38 dB. Methods of adjusting the bandwidth of this new kind of UWB filter is also discussed in this paper. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2026–2029, 2016