Six-pole parallel-coupled microstrip CQ filter with source-load and source/load to resonator cross coupling

Yun Wei Lin*, Jhe Ching Lu, Chi-Yang Chang, Ching Ku Liao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

The six-pole cascade quadruplet microstrip filter with source-load and source/load to nonadjacent resonator cross coupling is proposed to achieve generalized Chebyshev responses. The presented coupling scheme achieves similar skirt selectivity as that of a sixth-order fully canonical form filter. In addition, the proposed filter is less sensitive than that of canonical form filter. The initial design can be easily obtained by the design procedure of conventional parallel-coupled filter. With source to the third resonator and load to the fourth resonator cross couplings, two quadruplets are formed. Moreover, a source-load cross coupling forms the third quadruplet. The three quadruplets produce three pairs of finite transmission zeros. By controlling the strength of the cross couplings, the position of the three pairs of zeros can be decided arbitrarily. A design example is provided in this paper. Furthermore, simulation and measurement results are well matched.

Original languageEnglish
Title of host publicationAPMC 2009 - Asia Pacific Microwave Conference 2009
Pages171-174
Number of pages4
DOIs
StatePublished - 1 Dec 2009
EventAsia Pacific Microwave Conference 2009, APMC 2009 - Singapore, Singapore
Duration: 7 Dec 200910 Dec 2009

Publication series

NameAPMC 2009 - Asia Pacific Microwave Conference 2009

Conference

ConferenceAsia Pacific Microwave Conference 2009, APMC 2009
CountrySingapore
CitySingapore
Period7/12/0910/12/09

Keywords

  • Cross coupling
  • Microstrip cascade quadruplet filter
  • Parallel-coupled

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    Lin, Y. W., Lu, J. C., Chang, C-Y., & Liao, C. K. (2009). Six-pole parallel-coupled microstrip CQ filter with source-load and source/load to resonator cross coupling. In APMC 2009 - Asia Pacific Microwave Conference 2009 (pp. 171-174). [5385403] (APMC 2009 - Asia Pacific Microwave Conference 2009). https://doi.org/10.1109/APMC.2009.5385403