本文论证了声表面波滤波器在初始制作之后对其频率响就应进行调整的一种实验研究。通过高精度的扫频测试,确定在叉指换能器的各个电极长度上变动对滤波器的灵敏性。然后通过对多个电极的灵敏性测试综合改进滤波器的频率响应,本文用YZ铌酸锂基片上制作的器件示范了灵敏度测试。测试精度以及频率响应旁瓣的控制方法。这种调节法为与准确地微调实际滤波器性能改进提供了预测的方法。 This article demonstrates an experimental study of how the surface acoustic wave filter should be tuned to its frequency after initial production. Through the high-precision sweep test, the sensitivity of the filter to the variation of each electrode length of the interdigital transducer is determined. Then, the sensitivity test of multiple electrodes was used to improve the frequency response of the filter. The sensitivity test was demonstrated by the devices made on the YZ lithium niobate substrate. Test accuracy and frequency response control side lobe method. This method of regulation provides a predictive method for accurately tuning the performance of an actual filter.