Improved high-q dielectric resonator sintered at low firing temperature

Cheng Chyi You, Cheng-Liang Huang, Chung Chuang Wei, Jin Wen Huang

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26 Citations (Scopus)

Abstract

The microwave properties of Ba(Coi/3Nb2/3)03-Ba(Nii/3Nb2/3)03 ceramics were investigated. Ba(Coi/3Nb2/3)03 has a low sintering temperature. However, the Q value is too low for application requirements at microwave frequencies. A new composition, Ba(Nii/3Nb2/3)03, which shows a positive temperature coefficient of resonant frequency was used as a compensator to improve the dielectric properties of the complex perovskite-type ceramic.Both sintering and crystallization of Ba(Coi/3Nb2/3)03-Ba(Nii/3Nb2/3)03 were accelerated compared to those ofBa(Coi/3Nb2/3)03 alone. The Q value at microwave frequencies was also improved. The dielectric ceramics withBa(Co, Ni)i/3Nb2/303system were found to be fired at a low temperature below 1400 °C and to have a low temperature coefficient of resonant frequency 77 and high Q value. Dielectric properties of the ceramic resonator made ofBa(Coo.6Nio.4)i/3Nb2/303 are a dielectric constant of 31, Q value of 10000 at 9 GHz, and temperature coefficient ofresonant frequency Tf of —4 ppm/°C.

Original languageEnglish
Pages (from-to)1911-1915
Number of pages5
JournalJapanese Journal of Applied Physics
Volume34
Issue number4R
DOIs
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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