Title:
COMBINATION SATELLITE AND TERRESTRIAL ANTENNA
Document Type and Number:
WIPO Patent Application WO2004017459
Kind Code:
A9
Abstract:
A combined antenna system used for both vehicles and structures, whereby a satellite antenna is placed concentrically around a conventional mast antenna that can be used for both conventional FM radio and also terrestrial retransmission of the satellite broadcast signals. The combined antenna system, in a vehicle implementation, is configured to use only the one hole created in the vehicle manufacturing process, thereby preventing the necessity of drilling a second hole for the satellite antenna, which alleviates deterioration of the vehicle's body. Additionally, because the combined antenna system can be advantageously placed, a shorter RF cable connecting it to a receiver box can be implemented than otherwise would be the case for a satellite antenna located on a window or roof of a vehicle. In an alternative embodiment, the satellite antenna can be mounted on either a fixed or retractable terrestrial antenna, thereby raising the satellite antenna to a higher elevation with respect to any obstacles on the vehicle or structure.
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Inventors:
PETROS ARGY
HELSTROM TERRY C
ZAFAR IMTIAZ
HELSTROM TERRY C
ZAFAR IMTIAZ
Application Number:
PCT/US2003/025262
Publication Date:
July 29, 2004
Filing Date:
August 13, 2003
Export Citation:
Assignee:
XM SATELLITE RADIO INC (US)
DELPHI D ANTENNA SYSTEMS (US)
DELPHI D ANTENNA SYSTEMS (US)
International Classes:
H01Q1/32; H01Q5/00; H01Q5/40; H01Q9/32; H01Q11/08; H01Q21/28; H01Q23/00; H01Q25/00; (IPC1-7): H01Q1/36
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