Tunable 3D-printed coaxial-cavity filters with mixed electromagnetic coupling

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

This paper reports on 3D-printed coaxial-cavity bandpass filters (BPFs) with multiple levels of transfer function tunability. These include: i) center frequency tuning, ii) bandwidth (BW) tuning and iii) intrinsic switching-off. They are based on a new type of mixed electromagnetic coupling that facilitates the realization of a tunable transmission zero (TZ) that is exploited for the tuning of the BPF's BW and its out-of-band isolation. Center frequency adaptivity is obtained by incorporating linear actuators on top of the cavity walls. A proof-of-concept two-pole/one-TZ BPF with tunable frequency between 1.3-2.2 GHz and BW between 59-98 MHz was manufactured and measured.

Original languageEnglish
Title of host publication2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1703-1704
Number of pages2
ISBN (Electronic)9781728106922
DOIs
Publication statusPublished - Jul 2019
Externally publishedYes
Event2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Atlanta, United States
Duration: 7 Jul 201912 Jul 2019

Publication series

Name2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Proceedings

Conference

Conference2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019
Country/TerritoryUnited States
CityAtlanta
Period7/07/1912/07/19

Keywords

  • 3-D printing
  • Bandpass filter
  • Tunable filter

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