Other

Rangestar International Corporation

Norval N Luxon

R Joseph Milelli

Kevin A Luxon

John J Daniels

Kevin N Luxon

An antenna assembly for transmitting a radio signal from a radio signal transmitting device includes an antenna unit comprised of a dipole driven antenna member for transmitting a radio signal from the radio signal transmitting device. A radiation reflector reflects the radio signal transmitted by the driven antenna member, and a support member supports the driven antenna member and the radiation reflector so that a predetermined gap is precisely maintained between the driven antenna member and the radiation reflector. A shielding member shields a portion of the radio signal transmitted by the driven antenna member in a direction toward the shielding member. The antenna unit is pivotally mounted so that it is disposable at selectable positions relative to the shielding member. The output of the radio signal transmitted by the driven antenna member can be controlled depending on a position of the antenna unit. The dipole driven antenna member comprises a first and a second segment made from a metal foil. To reduce the overall length of the antenna, each segment has an unfolded portion and a folded portion. The radiation reflector is a metal wire, also having an unfolded portion and folded portions. This construction makes the inventive antenna assembly compact, while being effective both as a transmitting and receiving unit. The radiation reflector directs a portion of the radio signal toward the open transmission area, so as to extend a transmission range of the antenna assembly, and thus extend the transmission range of the radio signal transmitting device. By this construction, at least some of the radiation signal that is emitted from the driven antenna member in directions toward the user is blocked by the shielding member. Thus, the inventive antenna assembly has a compact construction, prevents unwanted exposure of the user to potentially harmful radiation, and provides an enhanced and extended transmission signal to enable improved communication.

Radiation shielding and range extending antenna assembly

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.

Shield apparatus for portable wireless telephones or personal communication apparatus includes electromagnetic radio frequency radiation absorption and blocking materials disposed about the antenna and any other electromagnetic transmitting portion of the wireless portable telephone or personal communication apparatus adjacent to, or in the direction of, the user of the wireless communication apparatus. The absorption and blocking or shield area absorbs and blocks the radiation and protects the user from the radiation, and metallic elements redirect the electromagnetic radiation away from the user and extend the transmission range of the communication apparatus. The portion of the antenna remote from the user is free or open, and thus permeable to the electromagnetic radiation, typically in the microwave frequency band, so that the communication signal may be appropriately transmitted from the wireless portable telephone or personal communication apparatus, and may be received by the hand held portable telephone or personal communication apparatus.

Growing community of inventors

San Jose, CA, United States of America

Norval N Luxon