Digital adjustable medium frequency noise source design
Lili Ma · Electronic Design Engineering · 2014
Introduce a method to generate an adjustable medium frequency noise source based on FPGA and AD9739. Use Combined Tausworthe method to generate uniform random number and get Gaussian distribution random number using line approximation method according to the mapping curve between uniform and Gaussian distribution. The center frequency and bandwidth can be adjusted by using XILINX FIR IP core. AD9739 receives the Gaussian data produced by FPGA using LVDS interface.