Beam waveguide phaser for array of Cassegrain reflectors

Very large antenna apertures for radioastronomy and other purposes, can be achieved through the use of an array of reflector antennas. When the reflectors are closely spaced to form a dense array, the array beam can be steered (within the beamwidth of a single reflector) by connecting the reflectors through appropriate time delays or through phasers (phase shifters). The letter describes a method for providing phase shifts suitable for high-power applications.<>