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中文摘要：
以ADI公司的高性能DDS芯片AD9910为核心，以TI公司的低功耗单片机MSP430为控制器，设计了一种信号发生器。目前的信号发生器产生信号单一，频率较低，不能满足某些需要多模式高频信号场合的要求，为了解决这个问题，采用单片机直接控制DDS芯片的方法，设计了一种能产生高频多模式信号的信号发生器，能够输出高达400MHz的信号，频率分辨力可达0．23Hz，还能够进行多级的相移键控和频移键控调制。
英文摘要：
In this paper,a kind of signal generator is designed with the high performance DDS chips AD9910 made by the ADI Company as the core and the low power consumption MCU MSP430 made by the TI Company as controller. Because the output signal is single and low frequency,the current signal generator can not meet certain requirements which require multi-mode high-frequency signal. To solve this problem, a signal generator is designed to generate high -frequency multi-mode signal, using the MCU directly controlling the DDS chip. This generator can output 400 MHz signal, and frequency resolution is up to 0.23 Hz. It also can make multi-level Phase Shift Keying and Frequency Shift Keying modulation.
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