对2DPSK及QDPSK数字调制信号进行了分析,采用FPGA在QuartusII环境下,利用VHDL语言及图形输入方式对调制系统进行了设计,用Altera公司的芯片EP1C3T144C-8为核心器件组建的系统进行了功能测试,得到了满意的验证波形-The signals of 2DPSK and QDPSK digital modulation are analyzed,the adoption of FPGA realization digital phase modulation system is introduced in detail by QuartusII environment,using VHDL language and graph input way.A system using chip EP1C3T144C-8 as a key device is established for function test,which produces satisfactory waveform.