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很久以前,声表面波是作为一种瑞利波在地震领域得以研究。后来,它从应用于军用脉冲压缩雷达中开始发展起来。1975年,SAW滤波器用于FM调谐器的中频10.7MHz实现了商品化,这是SAW滤波器在民用电子设备中最早的应用。接着用作电视的图象中频滤波器,也实现了商品化。由于这种器件可获得电路的小型化,无调整化以及高性能,因此LC滤波器的大部分被SAW滤波器所取代。特别是随着最近微细加工技术的发展,SAW滤波器作为直播卫星设备、袖珍电话机、无码电话、汽车电话以及通信机的RF滤波器或是IF滤波器,已开始使用。作为信息传播介质使用的电波,随着最近信息量的增大而迅速地向高频发展。为此人们对SAW滤波器寄予很大的期望。
Long ago, SAW was studied as a Rayleigh wave in the field of earthquakes. Later, it began to be used in military pulse compression radar. In 1975 SAW filters were commercialized for the midrange of FM tuners at 10.7 MHz, the earliest application of SAW filters in consumer electronics. Then used as a television image IF filter, but also achieved commercialization. Most of the LC filter is replaced with a SAW filter due to the miniaturization, non-tuning and high performance of this device. Especially with the recent development of microfabrication technology, SAW filters have started to be used as RF filters or IF filters for direct broadcast satellite equipment, pocket telephones, codeless telephones, car telephones and communication equipment. The radio waves used as the information transmission medium rapidly develop to high frequencies as the amount of recent information increases. To this end, people have great expectations for the SAW filter.