Conical omni-directional coverage multibeam antenna

Details Conical omni-directional coverage multibeam antenna Conical omni-directional coverage multibeam antenna

1996-07-16

1999-08-17

Wong, Don

Communications: radio wave antennas

Antennas

Plural antennas

343799, 343853, H01Q 2100, H01Q 2120

Patent

active

059400480

ABSTRACT:
An omni directional coverage multibeam antenna relief on a ground surface having simple conical shapes to provide beam steering. One advantage of such a system is that the projected area is always constant and broadside to the intended direction resulting in limited scan loss effects. In the case of a cylinder as the conical shape, z-axis symmetry provides a constant antenna aperture projection in any azimuthal direction. Using this geometry, high level, side lobes are reduced considerably because of the natural aperture tapering from dispersion effects. Coverage area and power can be controlled by changing the ground surface angle and by selectively activating different antenna beam positions around the circumference of the ground surface, and by selectively changing the phase relationship between a given set of antenna beams.

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patent: 4980692 (1990-12-01), Rudish et al.
patent: 5552798 (1996-09-01), Dietrich et al.
patent: 5650788 (1997-07-01), Jha

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