Design of microstrip lossy filter using an extended doublet topology

Jia Ni, Wenxing Tang, Jiasheng Hong, Riana H. Geschke

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A lossy three-pole microstrip bandpass filter using an extended doublet network is proposed in this letter. Nonuniform Q distribution is considered by reducing the of one resonator, resulting in a flatter passband with an enhanced selectivity. Also, the novel feeding network adopted brings about two extra transmission zeros and a wide stopband that further improve the filter performance. Good agreement between the simulated and measured results can be observed to validate the design.

Original languageEnglish
Pages (from-to)318-320
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume24
Issue number5
DOIs
Publication statusPublished - May 2014

Keywords

  • Extended doublet
  • lossy circuit technique nonuniform Q distribution
  • microstrip filter
  • transmission zeros
  • MICROWAVE FILTERS
  • NONUNIFORM-Q
  • RESONATORS

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