Comparative performance of piezoceramic and crystal SAW filters

被引：24

作者：

Feuillard, G ^{[1
]}

Lethiecq, M ^{[1
]}

Janin, Y ^{[1
]}

Tessier, L ^{[1
]}

Pourcelot, L ^{[1
]}

机构：

[1] GIP ULTRASONS,LUSSI,F-37032 TOURS,FRANCE

来源：

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL | 1997年 / 44卷 / 01期

关键词：

CERAMICS;

D O I：

10.1109/58.585216

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Bulk elastic, piezoelectric, and dielectric constants of four lead zirconate titanate piezoceramics, Pz24, Pz26, Pz27, Pz28, and a modified lead titanate, PTS, are measured and used to theoretically compute the effective permittivity curve of each material from which the surface acoustic wave (SAW) properties are deduced. In parallel, experimental measurements of the SAW properties are carried out by using a curve fitting algorithm on the real and imaginary parts of the electrical input impedance of an unapodised single electrode SAW transducer. The SAW propagation losses are also measured using a SAW delay line. For these ceramics, the effects of a hot isostatic pressing (HIP) post sintering process on the performances of the device are also studied. All these results are discussed and show that ceramic materials, particularly PTS, have potential for SAW applications.

引用

页码：194 / 200

页数：7

共 22 条

[1] TRANSDUCTION MAGNITUDE AND PHASE FOR COM MODELING OF SAW DEVICES [J].