Super compact and ultra-wideband bandpass filter using bridged-T coils

Tze Hao Tseng, Wei Ting Fang, Yo Shen Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

An ultra-wideband (UWB) bandpass filter (BPF) with super compact circuit size is proposed, which is realized using bridged-T coils. By replacing all the transmission line sections of a tri-mode resonator with bridged-T coils, the filter size can be largely reduced while the original frequency response remains almost intact. The proposed filter structure can then be conveniently realized with semiconductor IC process to achieve super compact circuit size. Specifically, an UWB BPF with a passband from 3.1 to 10.6 GHz is demonstrated using a commercial GaAs pHEMT process. The circuit size is 0.88 mm×0.88 mm, which is only about 0.02λ0×0.02λ0 at f0 = 6.85 GHz. To the best of our knowledge, this is the smallest UWB BPF ever reported.

Original languageEnglish
Title of host publication2016 IEEE MTT-S International Microwave Symposium, IMS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509006984
DOIs
StatePublished - 9 Aug 2016
Event2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States
Duration: 22 May 201627 May 2016

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2016-August
ISSN (Print)0149-645X

Conference

Conference2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Country/TerritoryUnited States
CitySan Francisco
Period22/05/1627/05/16

Keywords

  • Bandpass filter
  • bridged-T coil
  • GaAs
  • ultrawideband

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