The Transactions of the Korean Institute of Electrical Engineers (대한전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Effects of $Cr_2O_3$ Addition in PSS-PZT Piezoelectric Ceramics for Surface Acoustic Wave Filter

$Cr_2O_3$가 탄성 표면파 필터용 PSS-PZT계 압전 세라믹스에 미치는 영향

  • 홍재일 (대유공전 전기과) ;
  • 손은영 (제철전기콘트롤㈜ 기술개발부) ;
  • 박창엽 (연세대 공대 전기공학과)
  • Published : 1992.05.01
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Abstract

To improve temperature stability, 0.05Pb(SnS11/2TSbS11/2T)OS13T-0.35PbTiOS13T-0.60PbZrOS13T+0.4[wt%]MnO S12T piezoelectic ceramics were manufactured with the addition of CrS12TOS13T by Hot Press method. And the SAW delay line was fabricated and effects of CrS12TOS13T to the propagation characteristics of SAW was investigated, and the SAW filter was fabricated on C4 specimen added by 0.2[wt%] CrS12TOS13T whose propagation characteriatics of surface acoustic wave were the bast and its frequency characteristics was investigated. Electromechancal coupling factor(kS1sTS02T) was 3.11[%] and its temperature coefficient of the center frequency(CS1foT)was -21.27[ppm/$^{\circ}C$] in C4. The 31[MHz]]SAW IF filter of C4 scarcely had diffraction phenomena and therefore it was proper.

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