Sintering behavior and dielectric properties of ZnNb2O 6-TiO2 ceramic system at microwave frequency

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Abstract

High-dielectric-constant and low-loss ceramics in the (1 - x)ZnNb 2O6-xTiO2 two phase ceramic system have been prepared by the conventional mixed oxide route and their microwave dielectric properties have been investigated. Over-grown TiO2grains were observed in the over-sintered specimens, which would lead to the inhomogeneous grain growth and a decrease in Q×f. The τtf increases with increasing TiO2 content and tunes through zero at x =0:6. Specimen with x = 0:6 possessed an excellent combination of microwave dielectric properties: ετ 46:2, Q×f ∼ 48;000GHz and τt ∼0:6 ppm/°C. The two phase ceramic is proposed as a very promising candidate material for small-sized global positioning system (GPS) patch antennas.

Original languageEnglish
Pages (from-to)1002031-1002033
Number of pages3
JournalJapanese journal of applied physics
Volume48
Issue number10 Part 1
DOIs
Publication statusPublished - 2009 Dec 1

All Science Journal Classification (ASJC) codes

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

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