The Design And Implementation Of The New Short-Wave Antenna Feeder System

Short wave communication is the only equipment that all wireless communication systems can effectively realize long distance communication without the need of relay.It is convenient,flexible,low cost and high destruction resistance.Based on the characteristics of short wave communication,it has been concerned by military experts all the time.Therefore,HF communication has always been an important guarantee for wireless communication.Short wave antenna feeder system is the terminal equipment of HF communication system,and it is one of the important factors that affect the quality of HF communication system.The short wave antenna feeder system mainly includes antenna and automatic antenna tuner.The antenna mainly completes the function of radiation and receiving electromagnetic signals.The automatic antenna tuner mainly completes the matching of the load impedance of the antenna and the output impedance of the power amplifier,and eventually radiates the RF signal to the maximum power.In this paper,the antenna in the new short wave sky feed system mainly uses the near vertical technology to solve the communication without blind area.It has the advantages of high efficiency,good communication effect and so on.The automatic antenna tuner adopts vector tuning technology,which has the advantages of fast tuning speed and low tuning power consumption.It can meet the needs of matched spread spectrum and frequency hopping communication.This paper is based on vehicle 125 W short wave communication system as the research object.The short wave antenna feeder system consists of half ring blind antenna and antenna tuner.This article introduces the two parts separately,and the two part is related.This paper addresses the problem of blind area and low communication efficiency in short wave communication,and introduces the design of antenna tuner in the new type of antenna feeder system.In order to solve the problem of blind area and low communication efficiency in the short wave communication process,we design a semi ring without blind area antenna.Through the simulation and the related experiments,it is proved that the new short wave sky feed system can effectively solve the communication problem of the short wave blind area.At the same time,it has high efficiency and matching speed compared to the previous sky feed system.The effect of fast communication is good and so on.