基于ARM、DDS和蓝牙技术的信号发生器设计

Design on Signal Generator Based on ARM,DDS and Bluetooth Technology

提出了一种基于ARM、高精度直接数字频率合成器DDS和蓝牙技术的信号发生器的设计方案,在该方案中,ARM核心处理器通过蓝牙模块接收蓝牙终端发送的信号频率和相位控制字并将其发送到DDS模块,从.而生成所需的正弦波信号.经测试,该系统能输出0 - 40 MHz频带内的正弦波和方波,可生成调频和调相等多种调制方式的调制信号,以及实现高速扫频功能.

A novel scheme for signal generator based on ARM, high precision direct digital synthesizer DDS and Bluetoothtechnology is proposed. In the scheme, the ARM core processor receives the signal frequency and phase control word by Bluetoothmodule from Bluetooth terminal and sends it to the DDS module ,and the sine wave signal generates.The test results show that the systemcan achieve the output of sine wave and square wave,generate the modulated signals in such modulation modes as frequency modula-tion, phase modulation, etc., and achieve the high-speed frequency-sweeping function.