Variable gain reference antenna for non-contact charging device
First Claim
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1. A non-contact charging device for charging a battery in a vehicle, said device comprising:
- a source resonator configured to transfer electrical energy to a capture resonator in a vehicle;
a reference antenna configured to detect a reference signal originating from the source resonator, wherein said reference antenna is configured to be less sensitive to a presence of a foreign object than a foreign object detection (FOD) antenna proximate to the reference antenna; and
a variable gain amplifier configured to amplify a reference signal from the reference antenna.
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Abstract
A non-contact charging device for charging a battery includes a source resonator, a reference antenna, and a variable gain amplifier. The source resonator is configured to transfer electrical energy to a capture resonator in a vehicle. The reference antenna is configured to detect a reference signal originating from the source resonator. The reference antenna is configured to be less sensitive to a presence of a foreign object than a foreign object detection (FOD) antenna proximate to the reference antenna. The variable gain amplifier is configured to amplify a reference signal from the reference antenna.
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Citations
4 Claims
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1. A non-contact charging device for charging a battery in a vehicle, said device comprising:
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a source resonator configured to transfer electrical energy to a capture resonator in a vehicle; a reference antenna configured to detect a reference signal originating from the source resonator, wherein said reference antenna is configured to be less sensitive to a presence of a foreign object than a foreign object detection (FOD) antenna proximate to the reference antenna; and a variable gain amplifier configured to amplify a reference signal from the reference antenna. - View Dependent Claims (2, 3, 4)
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Specification