Title :
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
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;
Conference_Titel :
Computational Electromagnetics and Its Applications, 2004. Proceedings. ICCEA 2004. 2004 3rd International Conference on
Print_ISBN :
0-7803-8562-4
DOI :
10.1109/ICCEA.2004.1459333
