Method and system for operating a communications device that communicates via inductive coupling
First Claim
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1. A method for operating a communications device that communicates via inductive coupling, the method comprising:
- obtaining transmission output power information related to the communications device;
obtaining a received signal strength indicator (RSSI) at the communications device; and
measuring a detuning condition by estimating a field strength of inductive coupling based on a combination of the transmission output power information and the RSSI, and by generating a ratio between a transmitter impedance when a corresponding communications device is in close proximity to the communications device and a nominal transmitter impedance when there is not a corresponding communications device in close proximity to the communications device.
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Abstract
Embodiments of methods and systems for operating a communications device that communicates via inductive coupling are described. In an embodiment, a method for operating a communications device that communicates via inductive coupling involves obtaining transmission output power information related to the communications device and measuring a detuning condition based on the transmission output power information. Other embodiments are also described.
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Citations
16 Claims
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1. A method for operating a communications device that communicates via inductive coupling, the method comprising:
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obtaining transmission output power information related to the communications device; obtaining a received signal strength indicator (RSSI) at the communications device; and measuring a detuning condition by estimating a field strength of inductive coupling based on a combination of the transmission output power information and the RSSI, and by generating a ratio between a transmitter impedance when a corresponding communications device is in close proximity to the communications device and a nominal transmitter impedance when there is not a corresponding communications device in close proximity to the communications device. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communications device that communicates via inductive coupling, the communications device comprising:
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a system parameter sensor unit configured to obtain transmission output power information related to the communications device and to obtain a received signal strength indicator (RSSI) at the communications device; and a detuning condition measurement unit configured to measure a detuning condition by estimating a field strength of inductive coupling based on a combination of the transmission output power information and the RSSI, and the detuning condition measurement unit configured to generate a ratio between a transmitter impedance when a corresponding communications device is in close proximity to the communications device and a nominal transmitter impedance when there is not a corresponding communications device in close proximity to the communications device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16)
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15. A method for operating a communications device that communicates via inductive coupling, the method comprising:
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obtaining transmission output power information related to the communications device; and measuring a detuning condition based on the transmission output power information, wherein measuring the detuning condition based on the transmission output power information of the communications device comprises generating a ratio between a transmitter impedance when a corresponding communications device is in close proximity to the communications device and a nominal transmitter impedance when there is not a corresponding communications device in close proximity to the communications device.
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Specification