Digitally controlled beam former for a spacecraft

Details Digitally controlled beam former for a spacecraft Digitally controlled beam former for a spacecraft

1994-06-27

1996-08-06

Blum, Theodore M.

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

Directive

Including a satellite

342372, 342174, H04B 7185

Patent

active

055438016

ABSTRACT:
A digitally controlled beam former for a spacecraft which includes means for periodically calibrating the feed paths of the spacecraft's antenna array by measuring the apparent movement of the center of a reference signal and a nominal signal and utilising the measured data to compensate for at least the phase drift in the antenna feed paths. The measured data may also be used to compensate for amplitude and phase drift in the antenna feed paths.

REFERENCES:
patent: 3964065 (1976-06-01), Roberts et al.
patent: 4280128 (1981-07-01), Masak
patent: 4628321 (1986-12-01), Martin
patent: 4947176 (1990-08-01), Inatsune
patent: 4983981 (1991-01-01), Feldman
patent: 5038146 (1991-08-01), Troychak et al.
patent: 5093667 (1992-03-01), Andricos
patent: 5184137 (1993-02-01), Pozgay
patent: 5353031 (1994-10-01), Rathi

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