Design and Implementation of Broadband Sweep Signal Source Based on DDS+PLL
LI Lei-min · Communications technology · 2010
This paper describes the design of linear frequency sweep signal.By using ADI's AD9858 and Hittite's HMC440;FPGA controls DDS in generating linear frequency sweep signal with 200M central frequency and variable bandwidth from 0 to 75 MHz.And DDS spur PLL technology is used to multiple 200M signal to 1.6G.Experiment shows that this sweep signal source has much finer frequency resolution,high frequency accuracy and low spurious level,and could be used in radar system.