Communications: radio wave antennas – Antennas – With radio cabinet
Patent
1997-05-29
1998-07-07
Le, Hoanganh T.
Communications: radio wave antennas
Antennas
With radio cabinet
343841, 455 90, H01Q 124, H01Q 152
Patent
active
057775869
ABSTRACT:
A hand-held radio telephone for communication through an orbiting satellite is provided. An antenna assembly is fixed to the hand-held radio telephone and includes a radiation absorber defining an open curved shape in cross section, so as to define an open transmission area. An antenna is disposed adjacent to the open transmission area so that during use of the hand-held radio telephone some of the radiation signal emitted from the antenna is absorbed by the radiation absorber. The radiation signal that is not absorbed by the radiation absorber is transmitted through the open transmission area for reception by a remote receiver, such as an orbiting satellite. At least one parasitic radiation redirection element receives radiation emitted from the antenna. The radiation received by the parasitic radiation redirection element is directed toward the open transmission area, so as to extend a transmission range of the antenna assembly, and thus extend the transmission range of the hand-held radio telephone. By this construction, at least some of the radiation signal that is emitted from the antenna in directions toward the user is blocked by the radiation absorber from being transmitted to the user. Thus, in accordance with the present invention, the inventive hand-held radio telephone has an antenna assembly capable of preventing unwanted exposure of the user to potentially harmful radiation, while providing an enhanced and extended transmission signal to enable improved communication.
REFERENCES:
patent: 5335366 (1994-08-01), Daniels
patent: 5507012 (1996-04-01), Luxon et al.
patent: 5666125 (1997-09-01), Luxon et al.
Luxon Kevin A.
Luxon Norval N.
Milelli R. Joseph
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