Design of air coupled GPR antennas with optimized impedance

摘要：

A TEM horn antenna is usually in air-launched GPR system.Traditionally,the variation of characteristic impedance of a TEM horn antenna is designed to transform 50 Ω(characteristic impedance of a coaxial cable) to 376.7 Ω (free space wave impedance).However,difference exists between transmission-line wave characteristic impedance and free space wave impedance.In this paper,we discuss performance differences of antennas with different open end characteristic impedance.In addition,the simulated and experimental results show that a TEM horn antenna matched with impedance of 200 Ω has the best performance for air-coupled GPR applications.

关键词： TEM Horn GPR antenna

作者: Chien-ping Kao Chen Guo Jing Li Richard C.Liu

作者单位: Subsurface Sensing Lab.,University of Houston,USA Institute of Microwave Communication,Xian Jiaotong University,China

会议类型: 国际会议

会议名称: The 3rd International Conference on Environmental and Engineering Geophysics(第三届环境与工程地球物理国际会议)

会议地点: 武汉

会议语种:英文

页码: 268-271

在线出版日期: 2008-06-15（万方平台首次上网日期，不代表论文的发表时间）