Antenna system for broadband satellite communication in the GHz frequency range with horn antennas with geometric constraints

摘要

Antenna system with at least four individual radiating elements (1), in which the individual radiating elements are designed as horn antennas, the horn antennas (1) support two mutually orthogonal linear polarizations and have constrictions (15, 16) in both planes of polarization, characterized in that the walls of the horn antennas (1) and the geometric constrictions (15, 16) are at least partially staggered and the aperture of the horn antennas (1) is in any case approximately rectangular, the distance between two constrictions (15, 16) opposite each other and the cross section of the horn antenna aperture from the aperture to the horn end of the horn antenna (1) decreases from one step to another, at least for some of the steps, the steps are designed in such a way that for the distance di of the i-th integer steps, with 1 = 0, two constraints that are opposite (15, 16) and the length ud of the edge associated with i of the opening of the horn section in the i-th integer step ** Formula ** applies if λE denotes the free space wavelength of the lowest useful frequency of the antenna system, p1 it is between 0.3 and 0.4 and p2 is between 0.25 and 0.35, in which p1 = 0.35 and p2 = 0.29 preferably.