Target Detection With Impulse Radiating Antenna

Author

Bajracharya, Chandra ; Xiao, Shu ; Baum, Carl E. ; Schoenbach, Karl H.

Author_Institution

Dept. of Electr. & Comput. Eng., Old Dominion Univ., Norfolk, VA, USA

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

496

Lastpage

499

Abstract

A prolate spheroidal reflector antenna focuses subnanosecond pulsed radiation in the near field with a small beamwidth, allowing for applications such as target detection. Confocal imaging in free space has been demonstrated with such an antenna for both transmitting and receiving. A polarized beam allows for the detection of linear target orientation. We show that decreasing the focal spot size by adding a dielectric lens enables us to resolve a target with a typical dimension of 4 cm. The spatial resolution can be further enhanced by increasing the dielectric constant of the lens´ innermost layer.

Keywords

antenna radiation patterns; microwave antennas; microwave imaging; object detection; receiving antennas; reflector antennas; transmitting antennas; confocal imaging; dielectric constant; dielectric lens; impulse radiating antenna; linear target orientation; polarized beam; prolate spheroidal reflector antenna; receiving antenna; spatial resolution; subnanosecond pulsed radiation; target detection; transmitting antenna; Dielectric constant; Image resolution; Imaging; Lenses; Reflector antennas; Confocal imaging; dielectric lens; near field; subnanosecond pulses;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2157070

Filename

5771534