Design of a Rigid UWB Log Spiral Antenna for GPR Applications in Harsh Environment

被引：0
|
作者：
Richardson, Matthew [1 ]
Bauder, Chandler J. [1 ]
Kazemi, Robab [2 ]
Fathy, Aly E. [1 ]
机构：
[1] Univ Tennessee, Knoxville, TN 37916 USA
[2] Univ Tabriz, Tabriz, Iran
来源：
2020 IEEE RADIO AND WIRELESS SYMPOSIUM (RWS 2020) | 2020年
关键词：
Antennas; ground penetrating radar; spirals; ultra wideband radar;
D O I：
10.1109/rws45077.2020.9050033
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
A rigid air-filled cavity backed UWB spiral antenna for GPR applications is designed, simulated, and measured. The fabricated physically big planar spiral is accurately cut out of a thick aluminum sheet using an abrasive water jet machine. It is fed by a mechanically firm balun feed that avoids the weak interconnection between the spiral and the balun. The antenna operates from 750 MHz 1.25 GHz and maintains better than 12dB return loss and greater than 6 dB peak gain over the range. The fabricated antenna also keeps an axial ratio of less than 4 dB over the operating frequency range.
引用
收藏
页码：262 / 264
页数：3
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