Design of a novel four-band microstrip bandpass filter using double-layered substrate

Ko Wen Hsu, Wen Hua Tu

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

23 Scopus citations

Abstract

A novel four-band microstrip bandpass filter using double-layered structure is proposed. The basic components used to build the proposed filter are four pairs of stepped impedance resonators on the top metal layer and middle metal layer. The four pairs of resonators have different fundamental frequencies. The first and second fundamental frequencies are designed to operate at 3 and 5 GHz on the middle layer; the third and fourth fundamental frequencies are designed to operate at 7 and 9 GHz on the top layer. Due to cross-coupling effect, attenuation poles at both sides of the passbands can be created to improve the filter selectivity. The full-wave simulator IE3D is used to design the four-band bandpass filter and to calculate the coupling coefficients of the resonators.

Original languageEnglish
Title of host publicationIMS 2009 - 2009 IEEE MTT-S International Microwave Symposium Digest
Pages1041-1044
Number of pages4
DOIs
StatePublished - 2009
Event2009 IEEE MTT-S International Microwave Symposium, IMS 2009 - Boston, MA, United States
Duration: 7 Jun 200912 Jun 2009

Publication series

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

Conference

Conference2009 IEEE MTT-S International Microwave Symposium, IMS 2009
Country/TerritoryUnited States
CityBoston, MA
Period7/06/0912/06/09

Keywords

  • Bandpass filter
  • Cross coupling
  • Stepped impedance resonator

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