Miniaturized wideband bandpass filter in IPD technology with passive equalizer to improve the flatness of insertion loss response

Chia Ching Huang, Wei Ting Fang, Yo Shen Lin

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

6 Scopus citations

Abstract

In this paper, a wideband bandpass filter (BPF) with very compact circuit size is proposed. Specifically, the circuit size of a 5th-order multi-mode resonator BPF is largely reduced by replacing all transmission line sections with bridged-T coils. The resulted lumped-element BPF can then be implemented using the integrated passive device technology to achieve very compact chip size. To improve also the flatness of inband insertion loss, a passive equalizer is then introduced. The measured in-band insertion loss of proposed BPF is within 2.10±0.2 dB from 4.5 to 12.5 GHz while the measured in-band group delay is within 0.152±0.017 ns. Notably, it features a compact chip size of 1.83 mm × 1.69 mm, which is only 0.052λ0 × 0.048λ0 at the center frequency fo = 8.5 GHz.

Original languageEnglish
Title of host publication2017 IEEE CPMT Symposium Japan, ICSJ 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages75-78
Number of pages4
ISBN (Electronic)9781538627129
DOIs
StatePublished - 26 Dec 2017
Event2017 IEEE CPMT Symposium Japan, ICSJ 2017 - Kyoto, Japan
Duration: 20 Nov 201722 Nov 2017

Publication series

Name2017 IEEE CPMT Symposium Japan, ICSJ 2017
Volume2017-January

Conference

Conference2017 IEEE CPMT Symposium Japan, ICSJ 2017
Country/TerritoryJapan
CityKyoto
Period20/11/1722/11/17

Keywords

  • bandpass filter
  • integrated passive device (IPD)
  • passive equalizer

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