Wide-stopband microstrip quadruplexer using asymmetric stepped-impedance resonators

Wei Chung Hung, Ko Wen Hsu, Wen Hua Tu

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

9 Scopus citations

Abstract

A microstrip quadruplexer with a wide stopband is presented in this paper. The quadruplexer consists of asymmetric stepped-impedance resonators (SIRs) and a distributed common feeding line. In order to increase the stopband bandwidth, the higher order resonant frequencies of the asymmetric SIRs are staggered by properly selecting impedance ratio K and length ratio. Thus, a wide upper stopband performance can be achieved. The first, second, third, and forth channels of the quadruplexer are designed at 1.5, 1.8, 2.1, and 2.4 GHz (denoted by f1, f2, f3, and f4). For the upper stopband performance, the rejection level is greater than 20 dB up to 11.4 f1 (17.1 GHz).

Original languageEnglish
Title of host publication2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013
DOIs
StatePublished - 2013
Event2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013 - Seattle, WA, United States
Duration: 2 Jun 20137 Jun 2013

Publication series

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

Conference

Conference2013 IEEE MTT-S International Microwave Symposium Digest, MTT 2013
Country/TerritoryUnited States
CitySeattle, WA
Period2/06/137/06/13

Keywords

  • Multiplexer
  • Quadruplexer

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