Abstract: MIMO UWB Radar and Communication System is one of the hot development points today, and there are many relevant reports at home and abroad. The design and implementation of signal source is one of the key technologies. In view of the high complexity and high cost of the signal source which uses the spread spectrum module to realize the GHz pulse signal, this paper design and produce a signal source composed of FPGA and DDS chip to generate GHz pulse signal. The core devices are ADI Co.'s AD9914 DDS chip and Xilinx Co.'s Kintex-7 series FPGA chip. This signal source can generate up to 1.4 GHz large bandwidth multi-channel synchronous radar pulse signal, frequency switching time reaches ns level,and frequency, phase and amplitude are all controllable. It has practical value with the advanced performance at home.