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基于PLL和TDA7010T的无线收发系统设计
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2010-12-31
梅利号
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设计一种基于PLL和TDA7010T的无线收发系统。该系统由发射电路、接收电路和控制电路3部分组成。发射电路采用FM和FSK调制方式，用锁相环（PLL）稳定载波频率，实现模拟语音信号和英文短信的发射。接收电路以TDA7010T集成器件为核心，外围电路简单，工作稳定可靠。而控制电路由单片机AT89S51、编码器PT2262、解码器PT2272组成，实现英文短信的编写和显示。
- Abstract:
- A wireless transmitter and receiver system based on PLL and TDA7010T is designed in this paper.The system is made up of transmitter circuit,receiver circuit and control circuit.The transmitter circuit adopts frequency modulation and frequency-shift keying modulation mode,it works stable by using the phase lock loop（PLL）,realizes sending analog voice signal and English message.Integrated chip TDA7010T is the core of the receiver circuit,so the receiver circuit has simple peripheral circuits and works stable and reliability.The control circuit contains single chip microcomputer AT89S51,encoder PT2262,and decoder PT2272,it fulfills sending and showing English message
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