Dual-band filter design with flexible passband frequency and bandwidth selections

Hong Ming Lee, Chih-Ming Tsai

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

In this paper, improved dual-band filter design is studied. The dual-band resonators are composed of shunt open-and short-circuited stubs. In order to fulfill the requirements of dual-band inverters, a structure of stepped-impedance asymmetric coupled lines is proposed and its equivalent circuit is also derived. The dual-band filter is then designed based on this equivalent circuit. This type of filter can achieve relatively large practical passband center frequency ratios (in theory infinite), and it has more freedom of bandwidth ratio. The circuit size is also reduced. Detailed design procedure is presented and, finally, a filter example is given to validate the theoretical study.

Original languageEnglish
Pages (from-to)1002-1009
Number of pages8
JournalIEEE Transactions on Microwave Theory and Techniques
Volume55
Issue number5
DOIs
Publication statusPublished - 2007 May 1

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Equivalent circuits
bandwidth
Bandwidth
filters
equivalent circuits
Resonators
inverters
Networks (circuits)
shunts
resonators
impedance
requirements

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

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Dual-band filter design with flexible passband frequency and bandwidth selections. / Lee, Hong Ming; Tsai, Chih-Ming.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 55, No. 5, 01.05.2007, p. 1002-1009.

Research output: Contribution to journalArticle

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