ANALYSIS OF INTERDIGITAL SURFACE WAVE TRANSDUCER BY USE OF AN EQUIVALENT CIRCUIT MODEL

被引：462
作者：
SMITH, WR
GERARD, HM
COLLINS, JH
REEDER, TM
SHAW, HJ
机构：
[1] Microwave Laboratory, W. W. Hansen Laboratories of Physics, Stanford University, Stanford, Calif.
[2] North American Rockwell Corporation, Autonetics Division, Anaheim, Calif.
来源：
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1969年 / MT17卷 / 11期
关键词：
D O I：
10.1109/TMTT.1969.1127075
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Immittance, transfer, and scattering characteristics are studied for acoustic surface wave transducers of the interdigital electrode form. Linear network models are used to represent the transducer as a chain of identical three-ports which are acoustically in cascade but electrically in parallel. Transducer operation at acoustic synchronism is described theoretically and compared to current experimental data for transducers operating at 100 MHz and fabricated on lithium niobate. Favorable lithium niobate configurations for efficient, broad-band transducer operation are given. Scattering characteristics as a function of electric load are discussed. Low values of acoustic reflection loss are predicted theoretically and observed experimentally when the electric load and transducer capacitance are in resonance. The frequency dependence of transducer radiation immittance is studied, and the response is found to be analogous to the response of an endfire antenna array. © 1969, IEEE. All rights reserved.
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页码：856 / +
页数：1
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