The Design of Low Power Consumption Walkie-talkie

Abstract. Communication is very common today, this document introduces a design of high frequency walkie-talkie for communication, and the design of the circuit is low power consumption. The circuit has transmitting circuit, receiving circuit, control circuit and so on, mainly includes mixer, filter, amplifier, frequency modulation (FM), demodulation, microcontroller unit(MCU), liquid crystal display(LCD), keymatrix and so on. This system not only can realise voice communication, but also can transmit short messages. Through the choice of ICs in the circuit, that makes the system to be a low power consumption system. So this system can be used in various conditions. Foreword With the development of communication, the application of wireless voice communication system is very popular today. Low cost, low power consumption high-frequency walkie-talkie is paid more and more attention. High-frequency walkie-talkie can communicate with each other without transfer station, and do not need the support of ground exchanging station either. The walkie-talkie system designed in this paper have voice communication function, have games, and can transmit short message.This system can be used in various condtions, for security personnel in a housing estate, for students who learning the wireless communication, if students who study wireless communicatio