Compact balanced combline bandpass filters with two independently controllable transmission zeros in LTCC technology

Chin Lung Tsai, Yo Shen Lin

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

1 Scopus citations

Abstract

In this paper, the design of compact balanced combline bandpass filter in LTCC is presented. The mix coupling effect is utilized to create two transmission zeros that can be located independently in either the upper or lower stopband. Also, the effect of non-adjacent line coupling is minimized in an efficient way. The proposed filter is implemented using LTCC to achieve very compact circuit size, in which the combline line lengths are as small as /15. Specifically, two 3rd-order balanced combline bandpass filters with two transmission zeros on the same side or on the opposite side of the passband are implemented in LTCC with chip size of 2012. Good balance performance, low loss, good selectivity, and compact size are achieved.

Original languageEnglish
Title of host publication2010 Asia-Pacific Microwave Conference Proceedings, APMC 2010
Pages255-258
Number of pages4
StatePublished - 2010
Event2010 Asia-Pacific Microwave Conference, APMC 2010 - Yokohama, Japan
Duration: 7 Dec 201010 Dec 2010

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC

Conference

Conference2010 Asia-Pacific Microwave Conference, APMC 2010
Country/TerritoryJapan
CityYokohama
Period7/12/1010/12/10

Keywords

  • Balanced bandpass filter
  • low temperature co-fired ceramic (LTCC)
  • transmission zero

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