关键词: 射频电路, 模数转换器, FPGA, JESD204B接口, DDR3

Abstract: In order to complete the acquisition and transmission of high-speed RF signals, a communication and control module based on FPGA, analog-to-digital converter AD9680, and digital-to-analog converter AD9144 circuit is designed. The hardware mainly includes front-end design, clock design, and control part design. The software section details the program structure, module design, and program execution process. In order to be compatible with various AD/DA chips and to facilitate transplantation and reuse, all data processing and register configuration are completed in the processing system (PS) section of FPGA, and data interaction and storage with the PS section and peripherals are completed in the programmable logic (PL) section. The whole software can be viewed as a software package IP. 10 Gbit/s line rate JESD204B link communication is accomplished between FPGA as the main control chip and AD/DA, and data acquisition and transmission are carried out at 2 GSa/s conversion rate, which verify the correctness of the design.

Key words: RF circuit, analog-to-digital converter, FPGA, JESD204B-interface, DDR3