Band-pass filters using highpermittivity ceramics substrate

Cheng Liang Huang, Shin Tung Tasi, Yuan Bin Chen

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The miniaturization of ring band-pass filters by employing high-permittivity ceramic substrates (with respective dielectric constants of 9.7 and 23.5) are investigated. Microwave dielectric ceramics with high-permittivity are commonly applied in several microwave communication components. With the advantages of compact size, highpermittivity ceramics can be used as the substrate for band-pass filters. Moreover, the fundamental characteristics of newly developed compact ring resonators have also been described and applied to the design of band-pass filters. In this article, the designed ring resonators structures are simulated using an HFSS simulator. The responses of the fabricated band-pass filters using Al2O3r = 9.7, tanδ = 0.0001) and 0.875Mg 0.95Zn0.05TiO3-0.125Ca0.8Sm 0.4/3TiO3r = 23.5, tanδ = 0.000083) ceramic substrates are designed at the center frequency of 2.4 GHz. This compact size, low loss band-pass filter should be useful in many wireless communication systems.

Original languageEnglish
Pages (from-to)2344-2347
Number of pages4
JournalMicrowave and Optical Technology Letters
Issue number10
Publication statusPublished - 2010 Oct 1

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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