| In this paper, studies the application of loading technology and other technical meansin broadband ultrashort-wave antenna based on the summary of the current broadbandantenna technology and combined with special requirements of the airborne antenna.Research on the basic theory of matching network and with the computer aideddesign, make a detailed analysis of the standing wave ratio theory method, directoptimization design of broadband matching networks and the real frequency method.Optimize ultrashort-wave band planar monopole by top loading, adding lowfrequency circuit and lump element loaded. Through the optimization of the loadingelement size and loading position, adjust the impedance characteristics of the antenna,broadening the impedance bandwidth, then that the antenna has high gain.Design the matching network of broadband antenna by standing wave ratio method,by adding the matching network of the antenna, the VSWR in the frequency range isless than2.8, and match requirements. |
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