H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 21/22 (2006.01)
Patent
CA 2064717
2064717 9119332 PCTABS00008 Antenna composed of a number of subarray radiating elements, according to an aperiodical geometry, which assures connections between satellites and between satellites and ground stations. The invention offers substantially advantages on previous techniques, essentially due to its aperiodical structure, through which it is possible to eliminate possible interference acting on the connection. In fact the possible presence of the array grating lobes during the array beam(s) steering in the angular sector of interest is reduced, i.e. the presence of a grating lobe within the field of view which can cause interference with another low orbiting satellite is avoided, so as to improve reception quality characteristics. The invention belongs to the field of microwave antennas and can preferably be employed in space-borne systems, due to its capacity to solve the problem of eliminating the presence of grating lobes in the field of view. This invention can be adopted even in mobile, fixed, civil and military radar systems. The antenna is essentially formed by a subarray structure having an aperiodical array configuration.
Space Engineering S.r.l.
Swabey Ogilvy Renault
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