Development Of A Tactical Shortwave &Ultra-shortwave Vehicle Antenna

In recent years shortwave communication technology has developed rapidly at home and abroad,the application of new shortwave communication technology,such as shortwave no-blind area antenna,can effectively enhance the capability of shortwave communication,avoid the blind spot of shortwave news dispatch.The ultra-shortwave communication,which appears after the shortwave communication technology,has merit of steady channel and high capacity,good to the shortwave inherent communication effect and high transmission rate.It has highly complementary to short-wave communication.It has developed rapidly,Because Short-wave and ultra-shortwave communication due to its long communic ation distance and high survival rate of battlefield,it has become an essential strategic communication technology.For purpose of satisfying the want of the future communication to battleground,a sort of antenna applying to both short-wave and ultra-shortwave is studied.At the same time,the antenna which can solve the blind area of shortwave communication is very important.The institute of Armored Forces has proposed that active armored combat vehicles have shortwave and ultra-shortwave radio stations.At the same time,one set of shortwave antenna and one set of ultra-shortwave antenna need to be equipped with each other.During the travel of armored vehicle,the swing amplitude of antenna is very large and the antenna will collide with each other,which can not only guarantee the effective and reliable communication,but also can cause the antenna to break.Therefore,the army hopes to combine shortwave antenna and ultra-shortwave antenna on the basis of system efficiency.In this paper,a tactical antenna is designed,And this kind of antenna achieve the impedance match over the frequency band of 1.6MHz~88MHz is realized.Wideband and gain are the main problems to be solved.Firstly,the existing broadband antenna technology is analyzed,and the asymmetric dipole antenna is used to realize the wideband antenna.Secondly,the impedance matching design is carried out by using ADS circuit simulation analysis software.Finally,the prototype is debugged,and the actual measurement and field Speech test.The design goal of the system is realized.