摘要
提出一种结合AVR单片机和采用FPGA实现直接数字频率合成(DDS)的数字式移相信号发生器的新方案。采用FPGA实现的DDS与专用DDS集成芯片相比,其灵活性更好,可生成任意波形,频率分辨率高,转换速度快,稳定性好,精度高,且均可对频率、相位、幅度实现程控,重要的是他作为IP核具有更大的可移植性。
This paper presents a new scheme for a digital phase shift signal generator which implementing Direct Digital Frequency Synthesizer（DDS）using AVR single chip and FPGA. The frequency and the phase of generator displayed on LCD screen can be changed through the keyboard. The output mode can be set to arbitrary frequency and step value. The DDS implemented by FPGA is more flexible than the special DDS IC. It can generate arbitrary waveforms and it has high frequency resolution, fast conversion rate, good stability, high precision. Its frequency, phase and amplitude are program - controlled. Furthermore,it can be transplanted to other systems as an IP core.
出处
《现代电子技术》
2007年第21期6-8,共3页
Modern Electronics Technique
基金
肇庆学院教学研究基金资助项目(0643)
