短波发射和接收机设计实验

Experiment on design of short-wave transceiver

介绍一种具有移动网络控制的短波发射和接收机设计创新实验,该机使用7.023 MHz短波波段,可以在数百公里内进行设备间的通信.采用通信电子线路中的基础电路进行单元电路设计和系统构建,同时加入移动互联控制模块电路.该发射和接收机设计包括收发天线、输入信号处理模块、混频模块、音频信号输出模块、控制和Wi-Fi模块等,很适合于通信电子线路综合实验教学,学生通过实验可全面地理解和掌握发射机及接收机工作原理及设计方法.

This paper introduces an innovative experiment on design of a short-wave transceiver with the mobile network control, which uses 7.023 MHz short-wave band and can communicate between devices within hundreds of kilometers. The basic circuit in the communication electronic circuit is used to design the unit circuit and construct the system, and at the same time, the mobile interconnection control module circuit is added. The design of the transceiver includes the antenna, input signal processing module, mixer module, audio signal output module, control and Wi-Fi module, etc., which is very suitable for the comprehensive experiment teaching of communication electronic circuit. Through the experiment, students can fully understand and master the working principle and design method of transmitter and receiver.