基于PXIe-5641R板卡的三频段信号中频收发模拟

Design of IF Transceiver System Based on PXIe-5641R

摘要:

适用于三频段信号的中频接收机硬件设计管脚多,时序复杂,设计周期长,需要注意的细节问题太多,一个电路设计的小问题都有可能使整个板子返工,费事费力,针对此问题,设计三频段信号的模拟收发系统,系统由LabVIEW平台的FPGA程序和主控计算机程序组成,在主控计算机内,生成三频段信号后,经DMA FIFO传输至PXIe-5641R板卡,然后送至上变频器,输出中频信号；信号接收时,首先经AD6654进行下变频后,经过FPGA的数据调理过程送至主控计算机进行显示；最后测量了信号波形,验证了收发系统的有效性。

Abstract:

For three-band signal pin multi-IF receiver hardware design, the timing complexity, design cycle is long, too many problems need to pay attention to details, a small circuit design problems are likely to make the entire board rework, trouble and effort, for solving this problem designed three-band analog signal transceiver system, the system consists of the LabVIEW platform FPGA program and the master computer program consists in the host computer, the tri-band signal generated by the DMA FIFO transfers to PXIe-5641R board, and then sent on inverter, the output IF signal; signal reception, the first down-converted by the AD6654, after FPGA conditioning process data sent to the host computer for display. Finally measured signal waveform to verify the validity of transceiver system.