The signal source which is composed of low-power microcontroller PIC16F690 and wireless transceiver RF chip CC1100 core is designed. Wireless transceiver RF chip CC1100 produces a certain frequency sine wave, which is sent out through micro-antenna after filtering and amplifying. The design of system and implementation of hardware and software is expatiated. Through the test of signal source, the produced source can transmit about 6. 8 kilometers. The signal source can be applied in indoor and outdoor measure- experiment. It can also be SOS when tourist or explorer are in an emergency situation.%设计一种以低功耗单片机PIC16F690和无线收发射频芯片CC1100为核心的信号源,无线收发射频芯片CC1100产生一定频率的正弦波信号,经过滤波放大电路后经微带天线发送出去.详细阐述了设计方案和软硬件的实现方法.经过对信号源的测试,所产生的信号在可视距离传输6.8 km左右,该信号源可应用在室内室外的测量实验中,也可作为登山旅游、探险人员在遇险时等紧急情况下的求救信号源.
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