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Compact multiband bandpass filters based on parallel coupled split structure multimode resonators
  • jie luo,
  • Kaibo Shi,
  • Shanshan Gao
jie luo
Chengdu University

Corresponding Author:[email protected]

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Kaibo Shi
Cheng Du University
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Shanshan Gao
Chengdu University
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In this letter, a novel sext-band bandpass filter (BPF) using two split-type multiple-mode resonators is proposed. The filter is composed of two sets of resonators which are respectively designed to realize Filter 1 with two passbands and Filter 2 with quad passbands. Then the two BPFs are combined by parallel coupling feed lines for sext-band responses, and each of the six centre frequencies in the proposed sext-band BPF is able to be controlled due to the design freedom. To validate the design and analysis, a prototype filter has been fabricated with six passbands centered at 1.88/2.59/3.48/5.26/5.82/6.75 GHz. The measured result of the fabricated filter agrees well with the simulation, which shows that the proposed structure is a good candidate for sext-band BPF designs and validates the proposed design flow well.
30 Sep 2022Submitted to Electronics Letters
03 Oct 2022Assigned to Editor
03 Oct 2022Submission Checks Completed
11 Oct 2022Reviewer(s) Assigned
18 Oct 2022Review(s) Completed, Editorial Evaluation Pending
16 Nov 2022Editorial Decision: Accept
Jan 2023Published in Electronics Letters volume 59 issue 1. 10.1049/ell2.12684