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Compact Dual-Wideband Bandpass Filter with Multimode Resonator

  • Liu, Haiwen (College of Information Engineering, East China of Jiaotong University) ;
  • Li, Shen (College of Information Engineering, East China of Jiaotong University) ;
  • Guan, Xuehui (College of Information Engineering, East China of Jiaotong University) ;
  • Ren, Baoping (College of Information Engineering, East China of Jiaotong University) ;
  • Lei, Jiuhuai (College of Information Engineering, East China of Jiaotong University) ;
  • Wang, Yan (College of Information Engineering, East China of Jiaotong University)
  • Received : 2013.02.26
  • Accepted : 2013.04.18
  • Published : 2014.02.01
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Abstract

A microstrip dual-wideband bandpass filter using a multimode resonator (MMR) is proposed in this letter. The proposed MMR loaded with a T-shaped open-ended stub and a short-ended stub exhibits triple mode characteristics, and a synthesis method is developed to illustrate the wide passband with independently controllable center frequencies and bandwidths. To verify this design methodology, a dual-wideband filter with fractional bandwidths of 19.1% and 27.9% is designed and fabricated. The measured results agree with the simulations.

Keywords

References

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