SIGNAL TRANSMISSION/RECEPTION DEVICE
First Claim
1. A signal transmission-reception device (TRD) configured to cooperate with an antenna device that emits a magnetic field, wherein the signal transmission-reception device comprises, for transmission:
- a power stage for sending a symmetric square voltage signal as input to the antenna device to provide the antenna device with a current for generating the magnetic field emitted, anda current measurement stage for measuring the current flowing in the antenna device.
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Abstract
The invention relates to a signal transmission/reception device (DER) which can cooperate with an antenna device (A) capable of emitting a magnetic field. The invention is characterised in that the device (DER) comprises the following elements for transmission, namely: a power stage (P) for sending a symmetrical square-wave voltage signal (U0) to the input of the antenna device (A) in order to supply same with a current that can be used to generate the emitted magnetic field; and a current measuring stage (C) for measuring the current circulating in the antenna device (A). The invention is suitable for motor vehicles.
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Citations
9 Claims
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1. A signal transmission-reception device (TRD) configured to cooperate with an antenna device that emits a magnetic field, wherein the signal transmission-reception device comprises, for transmission:
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a power stage for sending a symmetric square voltage signal as input to the antenna device to provide the antenna device with a current for generating the magnetic field emitted, and a current measurement stage for measuring the current flowing in the antenna device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9)
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8. A method of transmitting-receiving signals bound for an antenna device, comprising:
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sending a symmetric square voltage signal as input to the antenna device to provide the antenna device with a current for generating a magnetic field emitted by the antenna device, and measuring the current flowing in the antenna device.
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Specification