Title :
Electronic steering antenna onboard for satellite communications in X band
Author :
Expósito-Domínguez, G. ; Padilla-Torre, P. ; Fernández-González, J.M. ; Sierra-Castañer, M.
Author_Institution :
Signals, Syst. & Radiocommun. Dept., Univ. Politec. de Madrid, Madrid, Spain
Abstract :
The antenna presented in this article will be developed for satellite communications onboard systems based on the recommendations ITU-R S.580-6 and ITU-R S.465-5. The antenna consists of printed elements grouped in an array, this terminal works in a frequency band from 7.25 up to 8.4 GHz (14.7% of bandwidth), where both bands, reception (7.25 - 7.75 GHz) and transmission (7.9 - 8.4 GHz), are included simultaneously. The antenna reaches a gain about 31 dBi, and it has a radiation pattern with a beamwidth smaller than 10° and a dual circular polarization. The antenna has the capability to steer in elevation from 90° to 40° electronically and 360° in azimuth with a motorized junction.
Keywords :
antenna radiation patterns; microstrip antennas; microwave antennas; satellite antennas; telecommunication standards; ITU-R S.465-5; ITU-R S.580-6; X band; dual circular polarization; electronic steering antenna; frequency 7.25 GHz to 8.4 GHz; printed elements; radiation pattern; satellite communications; Antenna radiation patterns; Arrays; Couplers; Microstrip; Polarization; Satellite antennas; Steering antenna; X band;
Conference_Titel :
Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-0250-1
