Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation
Patent
1988-09-28
1989-12-19
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including antenna orientation
342356, H01Q 300
Patent
active
048885924
ABSTRACT:
A system for causing an antenna controller for a satellite antenna to determine the alignment position of the antenna for a given satellite, whereby antenna installation time may be substantially reduced when the alignment position of the antenna for a large number of satellites must be determined. The system includes means for measuring the alignment position of the antenna for at least two reference satellites; and means for processing said measurements with stored data indicating the relative positions of the reference satellites and other satellites in accordance with an algorithm to determine the alignment positions of the antenna for the other satellites. The system also includes means for causing an antenna controller for a satellite antenna to determine the skews of the linear polarization axis of the antenna for respectively matching the linear polarization axis of odd-numbered and even-numbered channels received from a satellite. One embodiment of the system also includes a portable device into which data indicating the relative positions of the reference satellites and the other satellites and/or data indicating relative skews for matching the linear polarization axis of odd-numbered and even-numbered channels received by a reference antenna from the satellites may be downloaded from the antenna controller for the reference antenna, and from which the downloaded data may be uploaded into the first said antenna controller for said storage therein.
REFERENCES:
patent: 4675680 (1987-06-01), Mori
patent: 4796032 (1989-01-01), Sakurai et al.
Baylin and Gale, "Ku-Band Satellite TV Theory, Installation and Repair", 1986, p. 2020214.
Fong William
Goerge Ashok K.
McCormick John E.
Paik Woo H.
Blum Theodore M.
Callan Edward W.
General Instrument Corporation
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