Antenna system

Details Antenna system Antenna system

1990-10-24

1991-12-17

Hellner, Mark

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

Directive

Including antenna orientation

H01Q 300

Patent

active

050737830

ABSTRACT:
A satellite tracking antenna system comprises three or four plane antennas juxtaposed on a single plane. A first and a second antenna are juxtaposed in an azimuth direction, and a phase difference between signals received by these antennas is detected in order to determine a declination of an antenna unit with respect to the satellite as viewed in the azimuth direction. The first and a third antenna are juxtaposed in an elevation direction, and a phase difference between signals received by these antennas is detected to determine a declination of the antenna unit with respect to the satellite as viewed in the elevation direction. The antenna unit is driven so as to reduce these declinations to zero. Stated differently, values of a sine and a cosine function are extracted which have a phase difference between signals received by a pair of antennas as a parameter, and a tangent value representing the ratio therebetween is calculated and is then inversely converted to provide phase difference information.

REFERENCES:
patent: 3164831 (1965-01-01), Mraz
patent: 4136343 (1979-01-01), Heffner et al.

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