Near field analysis of a wideband log-spiral antenna for 1-2 GHz GPR

被引：0
作者：
Phelan, M [1 ]
Su, H [1 ]
Lo Vetri, J [1 ]
机构：
[1] Univ Manitoba, Dept Elect & Comp Engn, Winnipeg, MB R3T 5V6, Canada
来源：
IEEE CCEC 2002: CANADIAN CONFERENCE ON ELECTRCIAL AND COMPUTER ENGINEERING, VOLS 1-3, CONFERENCE PROCEEDINGS | 2002年
关键词：
log-spiral antenna; ground penetrating radar;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The log-spiral antenna described in this paper is part of the ultra-wideband stepped frequency Ground Penetrating Radar (GPR) for subsurface landmine detection currently being developed at the University of Manitoba. Log-spiral antennas possess many features that are desirable in such a radar system: low profile, high bandwidth, and circular polarization. Firstly, the design and construction of the antenna are described. ne antenna is fitted with a wideband balun to balance the current between the two arms of the spiral. An absorber loaded cavity is used behind the antenna to help direct the energy into the ground and keep it from radiating into the air. Next, a study of the far and near fields of the antenna, via simulations and measurements, is presented. The near fields are measured using short coaxial E-field probes at electrically short distances from the antenna and agree well with simulations.
引用
收藏
页码：336 / 341
页数：2
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