Antenna device and method of antenna configuration
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United States of America Patent
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Feb 2, 2016
Grant Date -
Oct 30, 2014
app pub date -
Dec 12, 2012
filing date -
Dec 13, 2011
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Abstract
A communication antenna device (D), on board a motor vehicle, for communicating with an antenna of a portable device, includes:
- a communication antenna (A) including a first part (A1) having a maximum number of primary windings (E1MAX) and a second part (A2) having a maximum number of secondary windings (E2MAX),a microcontroller (10) electrically connected to the antenna (A),a first switching element (M1), for connecting the first part and/or the second part to the microcontroller (10),a second switching element (M2), for connecting a determined number of primary windings (E1i) of the first part to the microcontroller (10),a third switching element (M3), for connecting a determined number of secondary windings (E2j) of the second part to the microcontroller (10), andelements for controlling (20) the first, second and third switching elements.
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