提出了一種多相濾波的寬帶數(shù)字化接收機(jī)的設(shè)計技術(shù)；討論了多相濾波的基本原理、設(shè)計及現(xiàn)場可編程門陣列實現(xiàn)，給出了多相濾波的中頻數(shù)字化接收機(jī)的實現(xiàn)方案。計算機(jī)仿真結(jié)果和現(xiàn)場可編程門陣列仿真結(jié)果表明，多相濾波的中頻數(shù)字化接收機(jī)設(shè)計方法是可行的，并還可靈活地實現(xiàn)現(xiàn)有專用芯片很難實現(xiàn)的寬帶接收技術(shù)。
關(guān) 鍵 詞 多相濾波; 中頻數(shù)字化接收機(jī); 現(xiàn)場可編程門陣列; 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