A 19 GHz lithium niobate acoustic filter with FBW of 2.4%

Liuqing Gao, Yansong Yang, Songbin Gong

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper presents the first demonstration of a wideband hybrid monolithic acoustic filter in the K-band which exceeds the limitation of electromechanical coupling on the fractional bandwidth (FBW) of acoustic filters. The hybrid filter utilizes the co-design of EM and acoustic to attain wide bandwidth while keeping the advantages of small sizes and high Q in the acoustic domain. The fabricated filter built with resonators having an electromechanical coupling of 0.7% based on the seventh-order antisymmetric Lamb wave mode (A7) has a 3 dB FBW of 2.4% at 19 GHz, and a compact footprint of 1.4 mm2.

Original languageEnglish (US)
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781728168159
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: Aug 4 2020Aug 6 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
Country/TerritoryUnited States
CityVirtual, Los Angeles


  • K-band
  • Microelectromechanical systems
  • Millimeter-wave devices
  • Piezoelectric devices

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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