论文部分内容阅读
信号发生器在通信、测控、导航、雷达、医疗等领域有着广泛的应用,因此研制高性能、低成本的信号发生器具有重要意义。该信号发生器采用直接数字频率合成技术(DDS),从“相位”的概念出发进行频率合成。主控芯片采用Altera的EP4CE30F23C8,实现整个电路的控制。首先利用MATLAB将三角波、正弦波、方波的数据进行量化并将存储在。mif文件。然后在Quartus II环境下使用verilog语言实现DDS过程,以D/A转换器和运算放大器为核心构成波形产生电路。该信号源可以对信号进行频率调节、幅度调节。应用了锁相环技术,使输出信号频率更加稳定可靠。
Signal generator is widely used in the fields of communication, measurement and control, navigation, radar, medical treatment and so on. Therefore, it is of great importance to develop a high performance and low cost signal generator. The signal generator using direct digital frequency synthesis (DDS), from the “phase” concept for frequency synthesis. The master chip uses Altera’s EP4CE30F23C8, to achieve the control of the entire circuit. The first use of MATLAB to triangle wave, sine wave, square wave of data to quantify and will be stored in. mif file. Then use the Verilog language to realize DDS process in Quartus II environment, and form the waveform generation circuit with D / A converter and operational amplifier as the core. The signal source can adjust the signal frequency, amplitude. Application of the PLL technology, the output signal frequency more stable and reliable.