Antenna system

Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01S 346

Patent

active

049948121

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: 2480829 (1949-09-01), Barrow et al.
patent: 3025515 (1962-03-01), Fairbanks
patent: 3133283 (1964-05-01), Ghose
patent: 3316548 (1967-04-01), D'Amico
patent: 4090201 (1978-05-01), Whitman, Jr.
patent: 4346386 (1982-08-01), Francis et al.
patent: 4348676 (1982-09-01), Tom
patent: 4443801 (1984-04-01), Klose et al.
patent: 4638320 (1987-01-01), Eggert et al.
patent: 4725843 (1988-02-01), Suzuki et al.
I.E.E.E. Transactions on Broadcasting, vol. 35, No. 1, Mar. 1989, pp. 56-61, New York, U.S.A., Ito et al., A Mobile 12 GHz DBS Television Receiving System.
Microwave Journal, vol. 30, No. 7, Jul. 1987, pp. 125, 130, Norwood, Mass., U.S.A.; Jackson et al., Low Cost, KA-Band Microstrip Patch Monopulse Antenna.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Antenna system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1146888

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.