Antenna device for use in vehicle
US7859457B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Dec 28, 2010 |
| Priority date | — |
| Expiry date | Jul 19, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/36
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.