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Selected phase shifting of feeds to antenna elements aims antenna beam. Antenna for Space Shuttle controlled in two dimensions by double-pole, double-throw switches antenna feeds. Switches control phasing of antenna elements by transposing transmission-line delay elements between feeds to pairs of elements located on opposite sides of antenna. Same principles can be applied to antennas with additional elements along each axis.

Various time delays introduced at intermediate frequency aim antenna in different directions. System includes spherical reflector with feed horn containing two five-element cross arrays. Each element in cross array connected to different set of switched delay lines. Antenna has low and moderate gains and wide coverage.