Miniaturized UWB Antipodal Vivaldi Antenna and Its Application for Detection of Void Inside Concrete Specimens

被引：75

作者：

Moosazadeh, Mahdi ^{[1
]}

Kharkovsky, Sergey ^{[1
]}

Case, Joseph Toby ^{[2
,3
]}

Samali, Bijan ^{[1
]}

机构：

[1] Western Sydney Univ, Ctr Infrastruct Engn, Penrith, NSW 2751, Australia

[2] Aerosp Corp, Mat Phys, Mat Sci Dept, El Segundo, CA 90245 USA

[3] Aerosp Corp, NDE Sect, Mat Sci Dept, El Segundo, CA 90245 USA

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷

关键词：

Antipodal Vivaldi antenna; concrete; dielectric lens; high gain; microwave imaging; ultrawideband antenna (UWB); SHAPED DIELECTRIC LENS; MICROWAVE;

D O I：

10.1109/LAWP.2016.2633536

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：

A miniaturized antipodal Vivaldi antenna to operate from 1 to 30 GHz is designed for nondestructive testing and evaluation of construction materials, such as concrete, polymers, and dielectric composites. A step-by-step procedure has been employed to design and optimize performance of the proposed antenna. First, a conventional antipodal Vivaldi antenna (CAVA) is designed as a reference. Second, the CAVA is shortened to have a small size of the CAVA. Third, to extend the low end of frequency band, the inner edges of the top and bottom radiators of the shortened CAVA have been bent. To enhance gain at lower frequencies, regular slit edge technique is employed. Finally, a half elliptical-shaped dielectric lens as an extension of the antenna substrate is added to the antenna to feature high gain and front-to-back ratio. A prototype of the antenna is employed as a part of the microwave imaging system to detect voids inside concrete specimen. High-range resolution images of voids are achieved by applying synthetic aperture radar algorithm.

引用

页码：1317 / 1320

页数：4

共 12 条

[1] Balanced Antipodal Vivaldi Antenna With Dielectric Director for Near-Field Microwave Imaging [J].