Automatic tracking receiving antenna apparatus for broadcast by

Details Automatic tracking receiving antenna apparatus for broadcast by Automatic tracking receiving antenna apparatus for broadcast by

1992-12-10

1994-05-03

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342357, 342442, H01Q 322, H01Q 324, H01Q 326

Patent

active

053091620

ABSTRACT:
A satellite broadcast receiving antenna apparatus having an automatic tracking function for mobile bodies subject to radio wave interference due to obstacles is disclosed, in which phase correction circuits are arranged in the stage before a phase difference detection circuit, and the amount of phase shift of the phase correction circuits is adjusted by a CPU in such a manner that the peaks of the received signals are coincident in phase with each other at the time of detection thereof. The amount of phase shift associated with the coincidence is stored in a phase shift amount memory, and phase correction is effected on the amount of phase shift read from the memory is subsequent automatic tracking.

REFERENCES:
patent: 4348676 (1982-09-01), Tom
patent: 4626860 (1986-12-01), Tricoles et al.
patent: 5021792 (1991-06-01), Hwang
patent: 5089824 (1992-02-01), Uematsu et al.
patent: 5101356 (1992-03-01), Timothy et al.
Electrical Communications vol. 49, No. 3, 1974, Brussels, BE pp. 204-217, Nollet et al. `Advanced VHF Interferometer Spacecraft Tracking System` *p. 212, right column, paragraph 4*.

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