基于FPGA信号传输两级数字多相滤波器的研究  

Research on Two-stage Digital Polyphase Filter Based on FPGA Signal Transmission

作　　者：何俊峰[1] 赵红阳 HE Junfeng;ZHAO Hongyang(Huazhong Institute of Electro-Optics,Wuhan National Laboratory for Optoelectronics,Wuhan 430223)

机构地区：[1]华中光电技术研究所-武汉光电国家研究中心,武汉430223

出　　处：《舰船电子工程》2020年第10期164-167,共4页Ship Electronic Engineering

摘　　要：为满足信号传输不同分辨率要求,论文基于多相滤波器组通过无盲区的均匀信号划分实现了两级数字信息传输通道化[1],给出了基于FPGA实现的并行结构和多相分支折叠结构。第一级信道化对整个传输模块瞬时带宽进行粗划分,第二级信道化对一级信道化的子信道带宽进行细划分,提高了信号传输的频率分辨率。最终对系统进行仿真测试,验证了设计的正确性合理性。To meet the different resolution requirements of channelized receivers,basing on the polyphase filter bank and uni⁃form channel partition without blind zone,two-level digital channelization is realized.The structrue of paralleling and mult-phase branch folding are respectively employed in the FPGA.In this dissertation,an approach is studied to realize a high-performance wideband digital receiver based on two-level channelization through uniform channel division without blind zone.The first level al⁃lows coarse division towards the whole instantaneous bandwidth of the receiver.The further division of sub-channel of the former is achieved in the second level.The frequency resolution of each channel is improved.Eventually,the system is simulated and tested,it is verified that the design is rational and efficient.

关 键 词：FPGA 数字信号 两级滤波 多相滤波 

分 类 号：TN911.6[电子电信—通信与信息系统]