0引言在信息技术不断发展的今天,多频段、宽带无线通信对设备的要求越来越高,在实际通信应用中,我们面临如何将多频段信号分离出所需频段信号的问题。在射频通信设备中常常采用不同中心频率的滤波器所组成的滤波器组来实现抑制其他信号的干扰的目的。然而传统滤波器组体积较大已经 0 Introduction In the continuous development of information technology, multi-band, broadband wireless communications equipment requirements are getting higher and higher, in practical applications, we face the problem of how to separate multi-band signals from the desired band. In the RF communication equipment, filters of different center frequencies are often used to achieve the purpose of suppressing the interference of other signals. However, the larger the traditional filter bank has been