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基于FPGA的高速ADC信号采集电路设计与实现

Design and Implementation of High-Speed ADC Signal Acquisition Circuit Based

  • 摘要: 针对无线电通信与雷达系统在高速信号采集面临实时性高及传输速率受限等问题,本文提出一种基于FPGA的高速ADC信号采集电路设计方案。该方案采用自研14位高速ADC芯片,通过FPGA控制电路完成数字信号处理、参数及FFT特性验证,以满足高速信号采集需求。FPGA代码基于Vivado 2018.3平台,采用Verilog语言及Xilinx-Kintex-7系列XC7K325T芯片开发;上位机平台基于Visual Studio 2022适配STM32芯片。文中详述电路结构、工作原理、软硬件驱动的设计过程,实验结果表明,该电路设计简洁、可靠性高且失真度小,可广泛应用于大型雷达及舰载武器装备。

     

    Abstract: In response to the problems of high real-time requirements and limited transmission rate in the acquisition of high-speed signals for radio communication and radar systems, this paper proposes a design scheme for a high-speed ADC signal acquisition circuit based on FPGA. This scheme uses a self-developed 14-bit high-speed ADC chip, and through the FPGA control circuit, it completes digital signal processing, parameter and FFT characteristic verification to meet the requirements of high-speed signal acquisition. The FPGA code is developed based on the Vivado 2018.3 platform, using Verilog language and Xilinx-Kintex-7 series XC7K325T chip; the upper computer platform is based on Visual Studio 2022 to adapt to the STM32 chip. The article details the circuit structure, working principle, and design process of software and hardware drivers. Experimental results show that this circuit design is simple, reliable, and has low distortion, and can be widely applied to large-scale radars and shipborne weapon equipment.

     

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