Using end reflections to improve the pulse radiation efficiency of bow-tie antenna

IEICE Electronics Express

Yi Su¹  Jian Wang¹ 

[1] School of Electronic Science and Engineering, National University of Defense Technology

关键词: bow-tie antenna;    radiation efficiency;    pulse;    ground penetrating radar (GPR);    ultra wide band (UWB);   

DOI  :  10.1587/elex.10.20130125

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Bow-tie antenna is widely used for pulse radiation, but the radiation efficiency is less than 30%. In this letter, a novel method is presented to improve the efficiency by exploiting the energy in end reflections, which are thought to be harmful and usually suppressed in the reported literatures. When the exciting pulse is bipolar and monocycle, it is indicated that, the end reflection can be used for producing a pulse with increased peak value by optimizing the antenna length. The simulation results show that the pulse radiation efficiency can be increased 100% with the presented method.

【 授权许可】

Unknown