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Design of coaxial dual‐band filter with high stopband rejection
Author(s) -
Wu Qiuyi,
Wang Han,
Yang Yimin,
Yu Xumin,
Shi Xiaowei
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22860
Subject(s) - stopband , transition band , coaxial , band stop filter , filter (signal processing) , elliptic filter , materials science , prototype filter , resonator , electronic engineering , low pass filter , acoustics , computer science , physics , optoelectronics , engineering , electrical engineering , telecommunications
This paper proposes a design of dual‐band coaxial filter with high stopband rejection. By setting the half‐window coupling structures and loaded resonators, the stopband rejection of the dual‐band coaxial filter can be significantly improved. An L band coaxial dual‐band filter is designed and measured as an example. The stopband rejection of the design is increased from 2.7 times to 3.52 times the center frequency of the filter, which verifies the proposed method.