Radiation shielding and range extending antenna assembly
First Claim
1. An antenna assembly for transmitting a radio signal from a communication device for use by a user, said antenna assembly comprising:
- an antenna structure, including a driven element and at least one parasitic element, said at least one parasitic element displaced a gap distance from said driven element effective to direct at least a portion of the radio signal into a direction away from the user; and
a radiation-shielding structure for blocking at least a portion of the radio signal directed toward the user of the communication device, said radiation-shielding structure disposed during use between the antenna structure and the user, said radiation-shielding structure including a radiation-shielding material and a conductive element, said conductive element disposed during use between the radiation-shielding material and the user.
4 Assignments
0 Petitions
Accused Products
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.
-
Citations
41 Claims
-
1. An antenna assembly for transmitting a radio signal from a communication device for use by a user, said antenna assembly comprising:
-
an antenna structure, including a driven element and at least one parasitic element, said at least one parasitic element displaced a gap distance from said driven element effective to direct at least a portion of the radio signal into a direction away from the user; and a radiation-shielding structure for blocking at least a portion of the radio signal directed toward the user of the communication device, said radiation-shielding structure disposed during use between the antenna structure and the user, said radiation-shielding structure including a radiation-shielding material and a conductive element, said conductive element disposed during use between the radiation-shielding material and the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. An antenna assembly for transmitting a radio signal from a communication device for use by a user and having a shielded side, said antenna assembly comprising:
-
an antenna, said antenna including a driven element and at least one parasitic element, said at least one parasitic element displaced a gap distance from the driven element effective to redirect a portion of the radio signal; and a radiation-shield structure disposed proximate the shielded side and disposed during use between the antenna and the user, said radiation-shield structure including a shield element formed of a radiation-shielding material and a conductive layer member, said conductive layer member disposed during use between said shield element and the user. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. An antenna assembly for emitting a radio signal generally in a transmission direction, said antenna assembly comprising:
-
an antenna structure, the antenna structure including a driven element and a radiation redirecting element, said radiation redirecting element displaced a first distance from the driven element effective to influence at least a portion of the radio signal; and a radiation-shielding structure displaced a second distance away from the antenna structure in a direction generally opposite the transmission direction, the radiation-shielding structure including a radiation-shielding material and a conductive member. - View Dependent Claims (28, 29, 30, 31)
-
-
32. An antenna assembly for transmitting a radio signal, said antenna assembly comprising:
-
an antenna for transmitting the radio signal generally in a direction of propagation, wherein said antenna includes a driven element and at least one parasitic radiation redirecting element, said at least one parasitic radiation redirecting element displaced a distance from said driven element effective to redirect at least a portion of the radio signal; and a radiation-shielding structure displaced from the antenna in a direction generally opposite the direction of propogation, the radiation-shielding structure including a radiation-shielding material and a conductive layer member. - View Dependent Claims (33, 34)
-
-
35. An antenna assembly for emitting a radio frequency signal generally in a transmission direction, said antenna asssembly comprising:
-
a conductive member including a face surface generally directed in the transmission direction; a radiation shielding member conformingly engaging the face surface; a driven antenna element displaced a first distance in the transmission direction from both the conductive member and the radiation shielding member; and a radiation-redirecting element displaced a second distance from the driven element to effectively redirect at least a portion of the radio frequency signal toward the transmission direction. - View Dependent Claims (36, 37, 38, 39, 40, 41)
-
Specification