Design and analysis of a dualband antenna for small LEO satellite applications

Author

Moghaddam, Elham Sharifi ; Aboutorabian, N. ; Amiri, Shervin ; Nikmehr, Saeed ; Rezaei, Pejman

Author_Institution

Iran Telecommun. Res. Centre, Tehran, Iran

fYear

2004

fDate

1-4 Nov. 2004

Firstpage

228

Lastpage

231

Abstract

Dualband antennas have many applications in small LEO satellites since use of this type of antenna makes the satellite structure simpler, thus it leads to a low cost and easy construction. The separated turnstile antenna (STA) can provide saddle-shaped and hemispherical patterns. The ability of dual-band operation of this antenna has been investigated and a dual band STA has been designed for the satellite. Its ability in making an arbitrary Earth covering pattern for data communications and an omnidirectional pattern for satellite control has made a lot of applications in small LEO satellites. A wire model of the STA is analyzed by the moment method and its gain pattern, polarization and input impedance are calculated. Also, effects of antenna geometrical parameters on its pattern and input impedance have been researched and calculated.

Keywords

UHF antennas; VHF antennas; antenna radiation patterns; impedance matching; method of moments; monopole antenna arrays; multifrequency antennas; satellite antennas; STA; UHF band; VHF band; arbitrary Earth covering patterns; data communications; dualband antenna; dualband matching impedance circuit; gain pattern; hemispherical patterns; input impedance; moment method; monopole array; polarization; saddle-shaped patterns; separated turnstile antenna; small LEO satellites; Artificial satellites; Communication system control; Costs; Data communication; Dual band; Impedance; Low earth orbit satellites; Pattern analysis; Satellite antennas; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on

Print_ISBN

0-7803-8562-4

Type

conf

DOI

10.1109/ICCEA.2004.1459333

Filename

1459333