Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2005-12-20
2005-12-20
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S711000, C343S770000, C343S776000
Reexamination Certificate
active
06977621
ABSTRACT:
The present invention relates to a vehicle mountable satellite antenna as defined in the claims which is operable while the vehicle is in motion. The satellite antenna of the present invention can be installed on top of (or embedded into) the roof of a vehicle. The antenna is capable of providing high gain and a narrow antenna beam for aiming at a satellite direction and enabling broadband communication to vehicle. The present invention provides a vehicle mounted satellite antenna which has low axial ratio, high efficiency and has low grating lobes gain. The vehicle mounted satellite antenna of the present invention provides two simultaneous polarization states. In one embodiment, an inverted L-shaped waveguide has a first wall extending vertically downward from a top surface. The top surface can include a ridge portion. The top surface includes a plurality of radiating elements for forming a radiating surface.
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Kelly Kenneth C.
Wang James June-Ming
Wang Wenzhang
Mathews, Shepherd, McKay & Bruneau, P.A.
Motia Inc.
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