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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