Performance of a planar filter using a 0° feed structure

Chih Ming Tsai, Sheng Yuan Lee, Chin Chuan Tsai

Research output: Contribution to journalArticlepeer-review

200 Citations (Scopus)


The advantage of using a 0° feed structure in filter design is that two extra transmission zeros are created in the stopband while the passband response remains unchanged. This feed structure is analyzed by using transmission matrices. A new lumped-circuit model for a coupled resonator filter is then proposed to take into account the effects of this feed structure. Finally, the feed structure is applied to the design of a cross-coupled filter. All the theoretical analysis and design procedures have been successfully verified by experiment results.

Original languageEnglish
Pages (from-to)2362-2367
Number of pages6
JournalIEEE Transactions on Microwave Theory and Techniques
Issue number10
Publication statusPublished - 2002 Oct

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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