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随着A/D变换技术、DSP技术、FPGA技术及ASIC等技术的发展,宽带数字化接收机正逐渐成为现代雷达、遥测及通信系统中必不可少的重要组成部分。其中多相滤波器是其中的关键技术,多相滤波可以利用抽取因子实现高效滤波,也起到抑制镜像干扰和邻道干扰的作用,因此多相滤波器的设计与研究就显得很重要。
With the development of A / D conversion technology, DSP technology, FPGA technology and ASIC technology, wideband digital receivers are gradually becoming an indispensable part of modern radar, telemetry and communication systems. Among them, polyphase filter is one of the key technologies. Polyphase filter can make use of decimation factor to achieve high efficiency filtering, and also can restrain image interference and adjacent channel interference. Therefore, it is very important to design and research polyphase filter.