High gain array at 12 GHz for telecommunications

The high gain array which has to function between 11.7 and 12.1 GHz is designed to receive radio-broadcasting and telecommunication signals sent out by geostationary satellites. In this paper it is shown why both the stationary wave and transversal radiation plane arrays as well as progressive wave and deflected radiation plane arrays have been abandoned, as high gain is incompatible with a large bandwidth. The solution of the progressive wave and transversal radiation plane array has been adopted. The elementary radiating source is a flat short-circuited symmetrical and unidirectional dipole acting at resonance. Its properties, i.e., matching, bandwidth, efficiency, and directivity, are analyzed by experiments and compared with theoretical results. Experimental results for a microstrip planar linear array of 32 sources acting at 12 GHz are given.