Design and analysis of Ag-Fe3O4 films as a multi-harmonic suppressor in wideband bandpass filters

Yu Jen Chou, Lih Shan Chen, Mau Phon Houng

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1 Citation (Scopus)


This letter proposes a novel method of designing wideband bandpass filters (BPFs) that contain high-frequency harmonic suppression. Ag-Fe3O4 films are used as harmonic suppression materials in such filters to replace the current general suppressing circuits. The wideband BPF can be designed using distributed highpass filters are equipped with two short-circuited stubs, and Ag-Fe3O4 films are combined with the harmonic suppression mechanism. Several high-order harmonic resonance bands may be suppressed using a wide stopband by adjusting the thickness of the Ag-Fe3O4 films appropriately. The stopband of the proposed wideband BPF is extended to 20 GHz, which result in a rejection level higher than 15 dB.

Original languageEnglish
Article number7024177
Pages (from-to)175-177
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number3
Publication statusPublished - 2015 Mar 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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