Hybrid Bandpass-Absorptive-Bandstop Magnetically Coupled Acoustic-Wave-Lumped-Element-Resonator Filters

Wesley N. Allen, Anming Gao, Songbin Gong, Dimitrios Peroulis

Research output: Contribution to journalArticle

Abstract

This letter presents a novel advancement in acoustic-wave-lumped-element-resonator (AWLR) filters, which improves transmission zero isolation by over 40 dB without adding any additional components. By spacing and orienting the AWLR-lumped inductors for intentional magnetic coupling, a hybrid bandpass-absorptive-bandstop filter is generated. The filter is demonstrated in three configurations using aluminum nitride contour-mode resonators and off-the-shelf lumped elements. Measured performance of as low as 3.2-dB insertion loss, bandwidth of 0.87%, and transmission zero notch depth greater than 60 dB is shown.

Original languageEnglish (US)
Pages (from-to)582-584
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume28
Issue number7
DOIs
StatePublished - Jul 2018

Keywords

  • Acoustic waves
  • bandpass filter
  • bandstop filter
  • couplings
  • resonator filters

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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