Design of UWB antenna array for through-wall detection system

In this paper, an ultra-wideband (UWB) antenna array for through-wall microwave imaging (TWMI) system is introduced. The detection system consists of 4-element balanced antipodal Vivaldi antenna array (BAVA) fed by 1-to-4 UWB modified Wilkinson power divider. The antenna element, array, and feed net...

Full description

Saved in:
Bibliographic Details
Published in2013 IEEE Symposium on Wireless Technology & Applications (ISWTA) pp. 349 - 354
Main Authors Elboushi, A., Joanes, D., Derbas, M., Khaled, S., Zafar, A., Attabibi, S., Sebak, A. R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2013
Subjects
Antenna arrays
array
Arrays
GPR
high gain antenna
Imaging
microwave imaging
power divider
Power dividers
Reflector antennas
TDR
TWMI
Ultra wideband antennas
UWB
Online AccessGet full text

Cover

More Information
Summary:In this paper, an ultra-wideband (UWB) antenna array for through-wall microwave imaging (TWMI) system is introduced. The detection system consists of 4-element balanced antipodal Vivaldi antenna array (BAVA) fed by 1-to-4 UWB modified Wilkinson power divider. The antenna element, array, and feed network are optimized, fabricated and tested. The main working principle of the detection system is based on time domain reflectometry (TDR). Wherein, very short pulse generated by the vector network analyzer (VNA) is used to illuminate the wall under investigation through the array system. The experimental work of scanning a 20 × 20 cm area of two wall separated by 15 cm air gap with the purpose of detecting 4 cm (diameter) metallic ball concealed in a gap between the walls shows a good accuracy. In order to enhance the resolution of the received image, a special filtering process has been developed and implemented.
ISSN:2324-7843
DOI:10.1109/ISWTA.2013.6688802