Wideband bandpass filter with a broad stopband based on a triple-mode stub-loaded resonator

Feng Wei*, Y. Jay Guo, Pei Yuan Qin, Xiao Wei Shi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A compact wideband bandpass filter (BPF) with a broad stopband (4.1 f0) based on a triple-mode stub-loaded resonator (SLR) is presented in this article. Using even/odd mode analysis, the proposed SLR is found to have the ability to introduce three transmission poles in the passband. By appropriately adjusting the frequencies of these transmission poles and using a 0 tapped feed structure, the BPF can provide a wide passband and a sharp rejection over a broad stopband without using other lowpass or bandstop networks. The predicted results on S-parameters are compared with measured ones and good agreement is achieved.

Original languageEnglish
Pages (from-to)2878-2881
Number of pages4
JournalMicrowave and Optical Technology Letters
Volume56
Issue number12
DOIs
Publication statusPublished - 1 Dec 2014
Externally publishedYes

Keywords

  • bandpass filter
  • stopband
  • stub-loaded resonator
  • triple-mode

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