Conical omni-directional coverage multibeam antenna with parasit

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

1996-09-09

1999-02-16

Wong, Don

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343853, 343890, 343893, 342375, H01Q 2112, H01Q 2100

Patent

active

058725474

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. These side lobes are further reduced by the presence of parasitic elements which also result in the added benefit of an increased front and back ratio. This front to back ratio may be further increased by the use of inverted cosine energization of selected antenna elements. 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.

REFERENCES:
patent: 3710329 (1973-01-01), Mailloux et al.
patent: 4123759 (1978-10-01), Hines et al.
patent: 4316192 (1982-02-01), Acoraci
patent: 4899162 (1990-02-01), Bayetto et al.
patent: 4980692 (1990-12-01), Rudish et al.
patent: 5039994 (1991-08-01), Wash et al.
patent: 5237336 (1993-08-01), Jelloul
patent: 5281974 (1994-01-01), Kuramoto et al.
patent: 5294939 (1994-03-01), Stanford et al.
patent: 5349364 (1994-09-01), Bryanos et al.

Affiliated with

Also associated with

Rating

Conical omni-directional coverage multibeam antenna with parasit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conical omni-directional coverage multibeam antenna with parasit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conical omni-directional coverage multibeam antenna with parasit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2066126