Design and optimization of the antenna applied for detecting the voids in tunnel lining by GPR

Author

Wang, Zhigao ; Xie, Xiongyao

Author_Institution

Dept. of Geotech. Eng., Tongji Univ., Shanghai, China

fYear

2012

fDate

4-8 June 2012

Firstpage

131

Lastpage

136

Abstract

In this paper, a new Antipodal Vivaldi antenna has been designed to be used for detection of the voids in tunnel lining by Ground penetrating radar (GPR). In order to obtain a desirable antenna performance, the wider impedance bandwidth, the higher radiation efficiency and gain, three parameters of the antenna structure, including a) length of microstrip line L, b) tapered slot opening rate R, c) elliptical axis radius R_e have been chosen to optimize the qualities of antenna based on FDID method. Moreover, the optimal Antipodal Vivaldi antenna has been used to detect the void in tunnel lining, and it´s proved that the new antenna has a good level of matching with the tunnel lining.

Keywords

design engineering; ground penetrating radar; linings; optimisation; radar antennas; tunnels; voids (solid); FDID method; GPR; antenna design; antenna optimization; antenna structure; desirable antenna performance; elliptical axis radius; ground penetrating radar; impedance bandwidth; microstrip line; optimal antipodal Vivaldi antenna; radiation efficiency; tapered slot opening rate; tunnel lining; void detection; Conferences; Ground penetrating radar; Antipodal Vivaldi antenna; Ground penetrating radar; optimization; tunnel lining; voids;

fLanguage

English

Publisher

ieee

Conference_Titel

Ground Penetrating Radar (GPR), 2012 14th International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4673-2662-9

Type

conf

DOI

10.1109/ICGPR.2012.6254847

Filename

6254847