Adaptive wire bow-tie antenna for GPR applications

被引：37
|
作者：
Lestari, AA [1 ]
Yarovoy, AG [1 ]
Ligthart, LP [1 ]
机构：
[1] Delft Univ Technol, IRCTR, NL-2628 CD Delft, Netherlands
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2005年 / 53卷 / 05期
关键词：
adaptive antenna; bow-tie antenna; ground penetrating radar (GPR) antenna; wire antenna;
D O I：
10.1109/TAP.2005.846726
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, the basic design of an adaptive ground penetrating radar antenna is introduced. The antenna is able to adapt its input impedance to a variation in the antenna elevation and soil type to keep reflections at the antenna's terminal minimum. As a result, energy transfer from the generator to the antenna is maximized, which in turn maximizes the energy radiated by the antenna into the ground for different antenna elevations and soil types. The antenna is based on a wire bow-tie structure with variable flare angle for adjusting the antenna's input impedance. The flare angle variation is realized by short-circuiting the gaps separating the wires from the feed point of the antenna, for which electronic switching devices such as PIN diodes could be used to allow fast and convenient control of the antenna's flare angle.
引用
收藏
页码：1745 / 1754
页数：10
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