DQPSK modulation with XILINX FPGA. 2 level butterworth analog filter for I & Q D/A output. -DQPSK modulation with XILINX FPGA. 2 level butterworth analog filter for I & Q D/A output.

一种带负反馈,无见相思曲的高精度锁相环,采用双D触发器实现-PLL