Antenna device for use in vehicle

Details Antenna device for use in vehicle Antenna device for use in vehicle

2009-02-24

2010-12-28

Tarcza, Thomas H (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357760

Reexamination Certificate

active

07859457

ABSTRACT:
A GPS signal from a GPS antenna is provided not only for a navigation apparatus through an amplifier but also for a data communication module (DCM) through a TEL antenna for establishing communication with a station for data exchange, by devising high frequency switches that is controlled by an ON/OFF of an antenna power supply on both of an input side and an output side of the amplifier. When the amplifier is in operation, one of the switches is turned on for distributing the GPS signal to a TEL antenna side. When the amplifier is not in operation, the other switch is turned on for transmitting the GPS signal from the GPS antenna to the TEL antenna side. In this manner, the GPS signal is provided for both of the navigation apparatus and the data communication module without deteriorating signal quality from the GPS antenna.

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patent: WO 02/11470 (2002-02-01), None

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