Multibeam antenna

Details Multibeam antenna Multibeam antenna

1997-10-31

2000-09-19

Wong, Don

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

343781R, 343756, H01Q 1300

Patent

active

061219398

ABSTRACT:
When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the reception polarization angle due to probes of the primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. while maintaining a preset difference in polarization angle among the satellites. Therefore, the arrangement inclination angle of the primary radiators 15a and 15b for respectively receiving signals from the two satellites, and the reception polarization angle in the primary radiators 15a and 15b can be simultaneously easily adjusted by rotating the converter 14 via the rotation mechanism 17.

REFERENCES:
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patent: 4574289 (1986-03-01), Henderson
patent: 4806945 (1989-02-01), Cormier et al.
patent: 5043683 (1991-08-01), Howard
patent: 5229736 (1993-07-01), Adams et al.
patent: 5426442 (1995-06-01), Haas
patent: 5434586 (1995-07-01), Kinoshita
patent: 5440279 (1995-08-01), Kinoshita
patent: 5444455 (1995-08-01), Louzir et al.
patent: 5463358 (1995-10-01), Dunn et al.
patent: 5696519 (1997-12-01), Suzuki et al.
patent: 5812096 (1995-10-01), Tilford
patent: 5825333 (1998-10-01), Kudoh

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