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A novel enlarging fractional bandwidth technique for AWLR-based bandpass filters
  • Xianli Tang,
  • Yonghao Jia
Xianli Tang
Shanghai University
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Yonghao Jia
Southeast University

Corresponding Author:[email protected]

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Abstract

A novel enlarging fractional bandwidth (FBW) technique for acoustic-wave-lumped-element resonator (AWLR) -based bandpass filters is present. The new technique is based on a series of matching inductors that replace the parallel or series acoustic wave (AW) resonators of AW filters to beak the bandwidth constraint of the ladder-type structure. In addition, the transmission response analysis of the proposed AWLR-based filter is provided. A prototype of the AWLR-based filter is fabricated and tested to validate the proposed FBW widening technique. The measured insertion loss, FBW, and out-of-band rejection are 1.5dB, 1.63kt2 (kt2 is the electromechanical coupling coefficient of the AWR), and 38dB, respectively.
Submitted to Electronics Letters
18 Apr 2024Submission Checks Completed
18 Apr 2024Assigned to Editor
18 Apr 2024Review(s) Completed, Editorial Evaluation Pending
19 Jun 2024Reviewer(s) Assigned
25 Jun 2024Editorial Decision: Revise Minor
01 Jul 20241st Revision Received
02 Jul 2024Review(s) Completed, Editorial Evaluation Pending