Compact Tri-Band Bandpass Filter Using Novel Eight-Mode Resonator for 5G WiFi Application

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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  • Li Gao
  • Xiu Yin Zhang
  • Quan Xue


Original languageEnglish
Article number7112182
Pages (from-to)660-662
Journal / PublicationIEEE Microwave and Wireless Components Letters
Issue number10
Publication statusPublished - 1 Oct 2015


This letter presents a novel compact tri-band bandpass filter (BPF) with wide third passband to satisfy the requirement of 5G WiFi. The proposed filter utilizes a novel multi-stub-loaded resonator with eight resonance modes. By utilizing these modes, a tri-band BPF with controllable operating frequencies is designed. Among the three bands, the highest one is formed by four modes to cover the 5G WiFi band. Each of the other two passbands centered at 2.4 and 3.5 GHz is realized by two modes. To validate the proposed idea, an experimental filter is implemented. Good agreement between the predicated and measured results demonstrates the proposed idea.

Research Area(s)

  • BPF, compact size, eight-mode resonator, Tri-band