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VPX是新一代的总线标准。本文基于VPX接口,设计了一种八通道的宽带数字接收机。文中介绍了VPX总线的由来与优点,详述了数字接收机的硬件设计和软件设计,综合FPGA分析工具Chipscope和Matlab软件,对接收机的指标进行了分析。该接收机采样率1200Msps,带宽400MHz,瞬时动态在45d B以上,通道间隔离度大于60d B。该接收机采用标准的6U VPX架构,接口丰富,通用性好,已在某对抗项目中成功应用。
VPX is a new generation of bus standards. Based on the VPX interface, this paper designs an eight-channel wideband digital receiver. This paper introduces the origin and advantages of the VPX bus, details the hardware design and software design of the digital receiver, the integrated FPGA analysis tools Chipscope and Matlab software, the receiver’s indicators were analyzed. The receiver sampling rate of 1200Msps, bandwidth 400MHz, instantaneous dynamic in more than 45d B, channel isolation greater than 60dB. The receiver uses a standard 6U VPX architecture, rich interface, good generality, has been successfully applied in a confrontation project.