声表滤波器的阻抗匹配分析

摘要

为了提升声表滤波器在射频电路中的性能,除了优化声表滤波器自身的性能外,其与外部电路的阻抗匹配也是相当重要的.本文基于实现声表滤波器在射频电路中性能最大化利用的目的,总结与归纳了一些常用的声表滤波器在射频电路中的阻抗匹配方法,也提出了两种射频电路中不平衡转平衡的阻抗匹配方法,并对它们作了ADS仿真验证,仿真表明该方法确实能提升滤波器在电路中的性能,从而使整个电路的相关性能得以优化.%In order to improve the SAW filter performance in the RF circuit,in addition to optimizing the performance of the SAW filter itself,and its external circuit impedance matching is also very important.In this paper,based on the realization of the SAW filter in the RF circuit to maximize the use of the purpose of summing up and summed up some commonly used SAW filter in the RF circuit impedance matching method,also proposed two RF circuit unbalanced The simulation results show that this method can improve the performance of the filter in the circuit,so that the correlation performance of the whole circuit can be optimized.