A 2-D Van Atta Array Using Star-Shaped Antenna Elements

Author

Wong, Ka Wai ; Chiu, Leung ; Xue, Quan

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong

Volume

55

Issue

4

fYear

2007

fDate

4/1/2007 12:00:00 AM

Firstpage

1204

Lastpage

1206

Abstract

A new passive 2-D Van Atta array is introduced with star-shaped antenna elements. The star-shaped antenna is proposed for low mutual coupling in the array. A single antenna element designed at 5.8 GHz has two orthogonal feeding ports with 23 dB port return loss and 28 dB isolation between ports. The mutual coupling among the antenna elements is less than -15.5 dB, which is 5 dB better than the conventional square patch antenna. Experimental results show that this array keeps a constant retrodirective characteristic at arbitrary injection polarization and direction. A stable bistatic radar cross section (BRCS) within 120deg angle can be achieved at 5.8 GHz

Keywords

antenna feeds; antenna radiation patterns; electromagnetic coupling; electromagnetic wave polarisation; microwave antenna arrays; radar antennas; radar cross-sections; 2D Van Atta array; BRCS; bistatic radar cross section; injection polarization; mutual coupling; orthogonal feeding port; retrodirective characteristics; star-shaped antenna element; Antenna arrays; Antenna measurements; Antenna radiation patterns; Antennas and propagation; Impedance; Linear antenna arrays; Mutual coupling; Patch antennas; Phased arrays; Scattering parameters; Mutual coupling; retrodirective array; star-shaped antenna;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2007.893407

Filename

4148089