基于DDS技术的多功能信号源设计

The Design of Multifunctional Signal Source Based on DDS

以FPGA(EP1C3T144C8)为核心,在Quartus II开发平台上,采用层次化设计方法,利用DDS技术实现三相正弦信号输出、调幅(AM)、调频(FM)功能,进一步设计ASK数字调制解调,最终实现一款功能多样、扩展性和升级换代能力强的信号源,经功能仿真与测试,达到设计要求,系统电路简单可靠,成本低、升级变换灵活,在电子测量、通信等领域有一定应用空间。

Based on the development platform Quartus II, in which FPGA（EP1C3T144C8）is held as the core, ahierarchical design method is adopted to make three - phase sinusoidal signal output, frequency modulation andamplitude modulation available, so as to form a signal source with functional diversity, expansibility and upgradecapability by designing ASK digital modulation demodulation. The design requirements are met through functionalsimulation and testing. The system circuit, with its simplicity, reliability, low cost and upgrade flexibility, has someapplication space in the field of electronic measurement and communication.