Title :
GEODA-GRUA: Adaptive multibeam conformal antenna for satellites communications
Author :
Trujillo, J. García-Gasco ; Natera, Miguel Salas ; Montesinos, Ignacio ; Campo, Marta Arias ; Pérez, M. Sierra ; Martínez, Ramón
Author_Institution :
Dept. de Senales, Sist. y Radiocomunicacion, Univ. Politec. de Madrid, Madrid, Spain
Abstract :
The GEODA-GRUA is one conformal adaptive antenna array designed for satellite communications. Operating at 1.7 GHz with circular polarization, it is possible to track and communicate with several satellites at once being able to receive signals in full azimuth and within the range of 5° to broadside elevation thanks to its adaptive beam. The complex structure of the antenna array has 2700 radiating elements based on a set of 60 similar triangular arrays that are divided in 15 subarrays of 3 radiating elements. A control module governs each transmission/receiver (T/R) module associated to each cell in order to manage beam steering by shifting phases.
Keywords :
UHF antennas; adaptive antenna arrays; antenna radiation patterns; conformal antennas; receiving antennas; satellite communication; transmitting antennas; GEODA-GRUA; adaptive beam; adaptive multibeam conformal antenna; beam steering management; circular polarization; conformal adaptive antenna array; radiating element; satellite communication; satellites communication; shifting phase; transmission-receiver module; triangular array; Adaptive arrays; Antenna radiation patterns; Arrays; Control systems; Microprocessors; Satellite antennas;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050354
