Design of compact tri-band bandpass filter using stub-loaded quarter-wavelength SIRs

DOI Web Site 参考文献30件 オープンアクセス
  • Wen Pin
    Graduate School of Science and Engineering, Saitama University Department of Information Engineering, East China Jiaotong University
  • Ma Zhewang
    Graduate School of Science and Engineering, Saitama University
  • Zhu Shuangshuang
    Department of Electronic and Engineering, Xi’an Jiaotong University
  • Liu Haiwen
    Department of Electronic and Engineering, Xi’an Jiaotong University
  • Ren Baoping
    Graduate School of Science and Engineering, Saitama University Department of Information Engineering, East China Jiaotong University
  • Guan Xuehui
    Department of Information Engineering, East China Jiaotong University
  • Ohira Masataka
    Graduate School of Science and Engineering, Saitama University

抄録

<p>A compact tri-band bandpass filter (BPF) with high selectivity and wide stopband performance is developed based on a modified stub-loaded quarter-wavelength stepped-impedance resonator (SL-SIR). The modified SL-SIR has flexibly controllable resonance modes under different schematics of the loaded stubs, from which, a tri-mode case is chosen to design a tri-band BPF with controllable centre frequencies and bandwidths. Furthermore, up to ten transmission zeros are created by introducing two source-load couplings simultaneously, which not only enhance significantly the selectivity of three passbands, but also widen greatly the stopband of the BPF. The tri-band BPF, operating at 1.27, 3.65, and 5.20 GHz, is designed and fabricated, and its measured responses are in good agreement with the simulated ones.</p>

収録刊行物

  • IEICE Electronics Express

    IEICE Electronics Express 16 (23), 20190549-20190549, 2019

    一般社団法人 電子情報通信学会

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