表面声波器件是六十年代末出现的一种新型固体电子器件。由于它具有某些独特的优点,一出现立即引起人们注意,很快在电子学领域中获得广泛应用,成为不可缺少的固体电子器件之一。本文将简要介绍表面声波器件的特点以及在雷达、通信、电子对抗及电视接收机等方面的应用。表面声波器件是一种超声电子器件。通常多指在压电材料表面激发和传播的瑞利型表面波器件。它利用一些交错放置在压电材料表面的金属条(简称叉指电极)在电场作用下激发超声表面波(瑞利波)。并且用同样的结构将接收到的表面声波转换为电信号输 Surface acoustic wave device is a new type of solid-state electronic device appeared in the late sixties. It has become one of the indispensable solid-state electronic devices due to its unique advantages, which immediately attracted the attention of people and became widely used in the field of electronics. This article will briefly describe the features of surface acoustic wave devices and their applications in radar, communications, electronic warfare and television receivers. Surface acoustic wave device is a kind of ultrasonic electronic device. More often refers to the piezoelectric material surface excitation and propagation of Rayleigh-type surface wave devices. It uses a number of staggered metal strips placed on the surface of the piezoelectric material (referred to as interdigital electrodes) in the electric field excitation ultrasonic surface wave (Rayleigh wave). And with the same structure will receive the surface acoustic wave is converted to electrical signal input