Title :
A circular switched parasitic array antenna for high power data link applications
Author_Institution :
FGAN Res. Inst. for High Freq. Phys. & Radar Tech. (FHR), Wachtberg
Abstract :
An enhanced circular switched parasitic array (CSPA) antenna is presented for a C-band data link application with high RF transmit power. Special requirements for the realized antenna gain are met by complementing the conventional CSPA configuration based on monopole antennas by an additional metallic top cover. The original ground plane and the top cover are shaped in such a way that a circular parallel plate waveguide with flared edges is formed resulting in an almost symmetrical radiation pattern with respect to the monopoles´ ground plane. The loads of the parasitic monopoles are switched by means of surface-mount technology micro-relay switches in order to handle high transmit power. For post production compensation of manufacturing and component tolerances fine thread screws for mechanical adjustment are provided. Design and realization of a CSPA demonstrator antenna as well as measurement results are presented.
Keywords :
antenna radiation patterns; circular waveguides; monopole antenna arrays; relays; surface mount technology; C-band data link application; RF transmit power; circular parallel plate waveguide; circular switched parasitic array antenna; high power data link application; micro-relay switch; parasitic monopole ground plane; surface-mount technology; symmetrical radiation pattern; Antenna arrays; Antenna radiation patterns; Manufacturing; Microrelays; Planar waveguides; Production; Radio frequency; Surface-mount technology; Switches; Transmitting antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2