提出了一种多相滤波的宽带数字化接收机的设计技术；讨论了多相滤波的基本原理、设计及现场可编程门阵列实现，给出了多相滤波的中频数字化接收机的实现方案。计算机仿真结果和现场可编程门阵列仿真结果表明，多相滤波的中频数字化接收机设计方法是可行的，并还可灵活地实现现有专用芯片很难实现的宽带接收技术。关 键 词 多相滤波; 中频数字化接收机; 现场可编程门阵列; 抽取Abstract This paper proposes a technique to design wideband digitized receiver based on polyphase filtering. The basic principle, design and FPGA implementation of polyphase filtering are discussed, and implementation project of wideband digitized receiver based on polyphase filtering is given. The results of computer simulation and FPGA simulation indicate that a technique to design wideband digitized receiver based on polyphase filtering is feasible ,and can neatly implement wideband receiver which is difficult to be implemented by extant ASIC.Key words polyphase filtering; IF digitized receiver; field programmable gate array; selection
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