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Compact multi-band transversal bandpass filters with source–load coupling

Author

Listed:
  • Zhenhao Lai
  • Zongxi Tang
  • Xiaowu Zhan
  • Xin Cao
  • Yunqiu Wu
  • Biao Zhang

Abstract

A method in designing multi-band bandpass filter is proposed in this paper. This design employs source and load cross-coupling technique and transversal structure with stub-loaded dual-mode resonators. The proposed filters are miniaturized by using stub-loaded dual-mode resonators, and half of the resonators are reduced compared with traditional SIR filters. What is more, the dual-mode resonators and the source–load cross-coupling can introduce more transmission zeros to improve frequency selectivity. It is demonstrated by the simulated and measured results that the novel filters have the advantages of low in-band insertion loss, good out-band rejection, and compact size. This proposed filter can be applied in the microwave circuits and wireless communication systems.

Suggested Citation

  • Zhenhao Lai & Zongxi Tang & Xiaowu Zhan & Xin Cao & Yunqiu Wu & Biao Zhang, 2014. "Compact multi-band transversal bandpass filters with source–load coupling," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 28(2), pages 184-193, January.
    • Handle: RePEc:taf:tewaxx:v:28:y:2014:i:2:p:184-193
    DOI: 10.1080/09205071.2013.860362
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