Dual-Band Multiple Beam Antenna System Using Hybrid-Cell Reuse Scheme for Non-Uniform Satellite Communications Traffic

Author

Wang, Jim ; Rao, Sudhakar K. ; Tang, Minh ; Hsu, Chih-Chien

Author_Institution

Lockheed Martin Space Syst. Co., Newtown, PA, USA

Volume

58

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

1380

Lastpage

1383

Abstract

An advanced dual-band antenna system suitable for broadband satellites that is capable of providing higher EIRP, higher G/T, and improved copolar isolation among frequency reuse beams is presented. The antenna system employs a hybrid-cell frequency reuse scheme instead of conventional fixed cell reuse (4-cell or 7-cell) in order to efficiently use spectrum based on traffic demands. It is shown that the advanced antenna employing high-efficiency horns and shaped reflectors provides about 1.0 dB EIRP improvement, 2.0 dB G/T improvement, and 3.0 dB improvement in C/I when compared to conventional antennas.

Keywords

cellular radio; horn antennas; multifrequency antennas; reflector antennas; satellite communication; telecommunication traffic; broadband satellites; dual-band multiple beam antenna system; horn antenna; hybrid-cell reuse scheme; non-uniform satellite communications traffic; shaped reflector antenna; Artificial satellites; Broadband antennas; Directional antennas; Downlink; Dual band; Horn antennas; Reflector antennas; Satellite antennas; Satellite communication; Space vehicles; Dual-band horns; high efficiency horns; reflector antennas; satellite antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2010.2041172

Filename

5398884