Compact 5.8-GHz bandpass filter using stepped-impedance dielectric resonators for ISM band wireless communication

Cheng-Liang Huang, Chih-Ming Tsai, Andy Yang, Allen Hsu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

High-permittivity dielectric ceramics MgTiO3-CaTiO3r ∼ 20) is applied in the fabrication of 5.8-GHz stepped-impedance resonator (SIR) microwave ceramic bandpass filter. Tapped input/output ports are designed to provide a direct connection between the filter and the microstrip transmission line. The microwave bandpass filter is constructed by using two stepped-impedance quarter-wavelength coaxial dielectric resonators. The direct-coupling method was employed in the transformation of electromagnetic energy. Losses and other electromagnetic (EM) effects are taken into account to further modify the actual dimensions of the designed filter. The fabricated bandpass filter achieves an excellent microwave-frequency response with insertion loss of less than 1 dB at 5.8 GHz.

Original languageEnglish
Pages (from-to)421-423
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume44
Issue number5
DOIs
Publication statusPublished - 2005 Mar 5

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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