HEAD-HAND CAPACITANCE COMPENSATION WITH DIGITAL VARIABLE CAPACITOR
First Claim
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1. A device, comprising:
- a first antenna;
an RF source coupled to the first antenna;
a capacitive sensor capable of detecting the capacitance of the antenna;
a feedback controller coupled to the capacitive sensor; and
a first capacitor coupled to the antenna and to the feedback controller.
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Abstract
The present disclosure generally relates to a device having a capacitance sensor that detects a change in capacitance that occurs in the antenna whenever the antenna is in close proximity to a user'"'"'s hand and/or head. Following detection of the capacitance change, the capacitance of the antenna may be changed by using a variable capacitor that is coupled to the sensor through a controller.
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Citations
20 Claims
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1. A device, comprising:
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a first antenna; an RF source coupled to the first antenna; a capacitive sensor capable of detecting the capacitance of the antenna; a feedback controller coupled to the capacitive sensor; and a first capacitor coupled to the antenna and to the feedback controller. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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detecting a change in capacitance of an antenna from a first capacitance to a second capacitance using a capacitive sensor that is disposed in a device; and changing capacitance in a first variable capacitor based upon feedback from the capacitive sensor, wherein changing capacitance in the first variable capacitor changes the capacitance of the antenna from the second capacitance to the first capacitance. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification