H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/13
H01Q 3/00 (2006.01)
Patent
CA 1268854
METHOD AND APPARATUS FOR ALIGNING A DIRECTIONAL ANTENNA TO RECEIVE SIGNALS FROM ONE OR MORE GEOSTATIONARY SATELLITES ABSTRACT OF THE DISCLOSURE An alignment apparatus and method for using it to orient a directional antenna so as to receive signals broadcast from one or more geostationary satellites. In one embodiment, suitable for aligning an antenna to receive a signal from just a single satellite, the antenna's elevation angle is first adjusted to a desired value and the antenna then turned in azimuth in a generally horizontal plane until the signal is received. To correct for a turn plane that is not precisely horizontal, the step of adjusting the longitudinal elevation angle is intermittently repeated during the step of turning. In a second embodiment, suitable for aligning an antenna that is rotatable about the axis of a polar mount to receive signals from any selected one of a number of satellites, the method further includes preliminary steps of controllably adjusting to predetermined angles both the elevation angle of the polar mount's axis and the elevation angle of the antenna itself, when rotated to its zenith. Thereafter, the antenna is rotated about the polar mount axis to the elevation angle of a predetermined satellite, and the antenna turned in azimuth in the generally horizontal plane until a signal from the satellite is received. Rotation about the polar mount axis then permits selective reception of signals from any visible geostationary satellite.
528113
Gowling Lafleur Henderson Llp
Roberts James M.
LandOfFree
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