EP0458592A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Passive cellular telephone antenna system
Assignee: Alliance Res Corp
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Filing: 1991-05-21
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Granted: —
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Expires: 2011-05-21
Abstract
Abstract A mast radiator (12) is affixed to a glass or other non conductive exterior panel (16) of a vehicle and is provided with a dipole element (18) and one or more parasitic elements to exchange signals, with gain, between the mast (12) and the antenna of a portable cellular telephone unit within the vehicle. In the preferred embodiment, a separate base unit (14) with parasitic elements is mounted on the same glass panel (16) on the opposite surface and opposite the base of the mast radiator (12).
Inventors
- 👤 Gershon N. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:17
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q1/00; H01Q1/12; H01Q1/1271; H01Q1/1285; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3283
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
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) an antenna, including a radiator having an axis, said antenna being mounted to the exterior of the shielding environment in a radiation transparent area thereof; b) a dipole element attached to said antenna and extending in a direction to maximize transmission and reception in a plane that intersects said antenna axis; and c) tuning means electrically coupling said dipole element to said antenna radiator, whereby a transceiver within the shielding environment is in radiant energy communication with said dipole element and, by means of said radiator, communicates with remote transmitters and receivers that are in radiant energy communication with said radiator.
Claim 2
Dependent Claim
78 words
A repeater assembly as in claim 1, further including a parasitic element mounted on the interior of the shielding environment in the transparent area thereof adjacent said antenna, said parasitic element being spaced at least 1/10 wavelength from said dipole and arranged to be substantially parallel thereto for enhancing transmission and reception in a selected direction, whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
Claim 3
Dependent Claim
51 words
A repeater assembly as in claim 1, further including a parasitic element in said antenna substantially parallel to said dipole for enhancing transmission and reception in a selected direction whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
Claim 4
Dependent Claim
78 words
A repeater assembly as in claim 3, further including a parasitic element mounted on the interior of the shielding environment in the transparent area thereof adjacent said antenna, said parasitic element being spaced at least 1/10 wavelength from said dipole and arranged to be substantially parallel thereto for enhancing transmission and reception in a selected direction, whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
Claim 5
Dependent Claim
158 words
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) an 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 dipole member mounted on said first base member amd electrically coupled to said antenna through reactive impedance elements, said dipole member extending in a direction that is not parallel to said mast axis for maximizing transmission and reception in a plane that intersects said mast axis; whereby a transceiver within the shielding environment is in radiant energy communication with said dipole member and, by means of said mast, communicates with remote transmitters and receivers that are in radiant energy communication with said mast.
Claim 6
Dependent Claim
92 words
A repeater assembly as in claim 5, further including a parasitic element mounted in a second base member that is adapted to be installed on the interior of the shielding environment in the transparent area thereof, adjacent said first base member, said parasitic element being spaced at least 1/10 wavelength from said dipole member and arranged to be substantially parallel thereto for enhancing transmission and reception in a selected direction, whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
Claim 7
Dependent Claim
54 words
A repeater assembly as in claim 6, further including a parasitic element in said first base member substantially parallel to said dipole member for enhancing transmission and reception in a selected direction whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
Claim 8
Dependent Claim
90 words
A repeater assembly as in claim 7, further including a parasitic element counted in a second base member adapted to be mounted on the interior of the shielding environment in the transparent area thereof adjacent said first base member, said parasitic element being spaced at least 1/10 wavelength from said dipole member and arranged to be substantially parallel thereto for enhancing transmission and reception in a selected direction, whereby gain is imparted to signals transmitted in the selected direction between the repeater assembly and a transceiver within the shielded environment.
References Cited (Backward Citations)
No citation records indexed.
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