Antenna with partially spherical dielectric lenses

Details Antenna with partially spherical dielectric lenses Antenna with partially spherical dielectric lenses

2008-07-15

2008-07-15

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

C343S909000, C343S91100R

Reexamination Certificate

active

07400304

ABSTRACT:
An antenna is provided comprising a first group of part-spherical dielectric lenses supported on a first portion of a conducting ground place arranged to reflect signals emerging from the lens, each of the lenses having a number of associated switchably selectable antenna feed elements arranged around the periphery of at least one sector of the lens for injecting signals into and/or receiving signals propagated by the lens, wherein each lens and the associated feed elements of the first group has a different orientation and may be operated to provide coverage in respect of a different region. The antenna also comprises a second group of one or more spherical or part-spherical dielectric lenses and associated switchably selectable antenna feed elements, oriented and operable to provide coverage to a region other than that covered by lenses of the first group. The first portion of the ground plane may be substantially annular and arranged to surround a well-like region of the antenna in which the second group of one or more lenses may be accommodated.

REFERENCES:
patent: 3386099 (1968-05-01), Walter et al.
patent: 5781163 (1998-07-01), Ricardi et al.
patent: 6424319 (2002-07-01), Ebling et al.
patent: 7042420 (2006-05-01), Ebling et al.
patent: 7061448 (2006-06-01), Kuroda et al.
patent: 7221328 (2007-05-01), Kuroda et al.
patent: 2003/0006941 (2003-01-01), Ebling et al.
patent: 2006/0145940 (2006-07-01), Kuroda et al.
patent: 10-163730 (1998-06-01), None
patent: 01/37374 (2001-05-01), None
patent: 2004/010534 (2004-01-01), None

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