Patent ID: 6570542
Filing Date: 2003-05-27
Classification: H01Q

Abstract:
An integrated dual-directional feeding device, combined with an antenna dish for receiving RF signals from two satellites within a predetermined angle, said integrated dual-directional feeding device comprising:a first low noise block with an integrated feed (LNBF), installed on a focus plane of the antenna dish, and having a first elliptic wave-guide tube for receiving RF signals from one of said satellites; a second LNBF, installed on the focus plane of the antenna dish, having a second elliptic wave-guide tube for receiving RF signals from and transmitting RE signals to the other satellite; wherein the first and second wave-guide tubes are adjacent to each other in a short-axial direction of said elliptic wave-guide tubes, the lengths of the long-axes thereof are adjustable for improving gains of the first and second LNBFs; the first LNBF receives circular polarized waves, and the first wave-guide tube comprises a phase compensator for compensating phases of circular polarized waves in the first LNBF.