【摘要】 数字基带移相电路是数字波束赋形电路的重要组成部分。分析了数字波束赋形电路中基带信号的相位控制方法，基于FPGA平台设计了一种数字基带移相电路，该电路通过AHB接口获取相位控制字，根据相位控制字的大小调节FIFO存储器中信号的缓存时间来达到相位调节的目的。AHB接口的高速能力使得移相参数的调节具有实时性，结合FPGA并行运算的优势，可以同时对多通道数字基带信号进行相位调节。在集成设计环境Vivado平台上使用Verilog语言对移相电路进行设计，通过在线逻辑分析仪测试验证了设计的可行性。更多还原

【Abstract】 Digital baseband phase shifting circuit is an important component of digital beam shaping circuit. The phase control methods of baseband signals in digital beamforming circuits is analyzed, and a digital baseband phase shifting circuit is designed based on FPGA platform. This circuit obtains the phase control word through the AHB interface, and adjusts the buffer time of the signal in the FIFO memory according to the size of the phase control word to achieve the purpose of phase adjustment. The high-speed capability of the AHB interface makes the adjustment of phase shifting parameters in real time. Combined with the advantages of FPGA parallel computing, it can simultaneously adjust the phase of multi-channel digital baseband signals. The phase shift circuit is designed using of Verilog language on the integrated design environment of Vivado platform, and the feasibility of the design is verified through online logic analyzer testing.更多还原