Sidelobe Gain Characteristics for Ku-Band Earth-Station Antennas

摘要

Measured analog data showing gain as a function of angle away from the mainbeam (maximum gain) axis have been obtained for 14 models of reflector antennas designed for operation at 11/12 GHz for reception and at 14 GHz for transmission. The antennas ranged in size from 3.5 to 11.0 m and represented equipment from four U.S. manufacturers. The analog patterns have been converted to sets of digital data pairs (gain and angle) to facilitate analysis. The data then have been analyzed following techniques recommended by the International Radio Consultative Committee (CCIR) for antennas for earth stations in the Fixed-Satellite Service to develop statistical characterizations of gain versus angle for the sidelobe regions. The digitization and analysis techniques are discussed and statistical results are provided to show compliance with Federal Communications Commission (FCC) and CCIR recommendations. Background material from the perspectives of the CCIR, the FCC, and antenna manufacturers is also provided.