I. Introduction
In recent years, with the development of signal generation technology, the requirements for the scanning speed of the signal are getting higher and higher. This project uses the direct digital frequency synthesizer (DDS) as the signal excitation source to achieve the requirement of fast scanning speed [1]. The signal generation frequency range of this project is 1MHz~3GHz, which can be applied to the test application of P, L-band radar and related components. This project also designs the USB3.0 high-speed communication interface and the synchronous interface, which can realize the cascade connection of multiple modules, and generate the transmission and reception of array signals at the same time, which has a wider range of applications.