摘要
文章设计了一套无线调频收发系统,重点介绍了无线调频发射机的设计,实现了发射机和接收机间的无线通信。无线调频发射机由音频放大模块、压控振荡器、高频功放等模块构成,完成对音频信号的调制;无线调频接收机由高频小信号放大、混频、鉴频、高频功放等模块构成,实现对天线所接收信号的解调和输出。该无线调频收发信机可以产生46.3 MHz的中心频率,最大频偏为75 kHz,带宽大于150 kHz,发射功率不小于0.1W,能够实现发射机和接收机的同箱、异箱间音频信号的通信。
This paper designs a set of wireless FM transceiver system,focusing on the design of wireless FM transmitter,and realizes the wireless communication between transmitter and receiver.The radio frequency transmitter is composed of audio amplification module,voltage controlled oscillator module,high frequency power amplifier and other modules to complete the modulation of audio signal.And the radio frequency receiver is composed of high frequency small signal amplification,mixer,frequency discrimination,high frequency power amplifier and other modules to realize the demodulation and output of the signal received by the antenna.The wireless FM transceiver can generate a center frequency of 46.3 MHz,with a maximum frequency deviation of 75 kHz,a bandwidth greater than 150 kHz,and a transmitting power of not less than 0.1 W.It can realize the communication of audio signals between the transmitter and receiver in the same box and different boxes.
作者
张晓娜
吴炜
孔文迪
常乐冉
Zhang Xiaona;Wu Wei;Kong Wendi;Chang Leran(Shangdong University of Science&Technology in Jinan,Jinan Shandong 250031)
出处
《现代工业经济和信息化》
2020年第4期33-34,共2页
Modern Industrial Economy and Informationization
关键词
无线调频收发信机
音频放大
高频功率放大
调制
压控灵敏度
audio amplification
high frequency power amplification
modulation
voltage control sensitivity
