Passive repeater for cellular phones
AssigneeAlliance Research Corporation
InventorGershon N. Cooper
Life of this patent
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Abstract
A mast radiator is affixed to a glass or other non conductive exterior panel of a vehicle and is provided with a dipole element and one or more parasitic elements to exchange signals, with gain, between the mast and the antenna of a portable cellular telephone unit within the vehicle. In the preferred embodiment, a separate base unit with parasitic elements is mounted on the same glass panel on the opposite surface and opposite the base of the mast radiator.
Claims8
A passive repeater assembly for use with a transceiver located within a shielding environment that has areas that are transparent to wireless electromagnetic radiation, comprising in combination:
- a) a first antenna, including a radiator having an axis, said first antenna being mounted to the exterior of the shielding environment in one of the radiation transparent areas thereof;
- b) a second antenna connected to said first antenna and orthogonally displaced therefrom mounted exterior to the shielding environment, and in electromagnetic radiant transmission and reception communication with the transceiver;
- and
- c) means for electrically coupling said second antenna with said first antenna radiator,
- whereby a transceiver antenna directly radiates energy within the shielding environment without a wire link to said second antenna, and by means of said radiator, the transceiver communicates with remote transmitters and receivers that are in radiant energy communication with said radiator.
A repeater assembly for use with a transceiver located within a shielding environment having areas that are transparent to electromagnetic radiation, comprising in combination:
- a) a first antenna, including a mast element having an axis, said antenna being adapted to radiate and receive cellular telephone signals;
- b) a first base member coupled to said antenna and adapted to be mounted to the exterior of the shielding environment in a radiation transparent area thereof;
- and
- c) a second antenna mounted exterior of the shielding environment on said first base member and electrically coupled to said first antenna, and second antenna extending in a direction that is not parallel to the mast element axis for maximizing transmission and reception in a plane that intersects said mast element axis and adapted to transmit and receive radiated signals to and from the transceiver within the shielded environment without a wire connection therebetween;
- whereby the transceiver within the shielding environment is in radiant energy communication with said second antenna and, by means of said first antenna mast element, the transceiver communicates with remote transmitters and receivers that are in radiant energy communication with said first antenna.
Dependencies are inferred from the claim text.