Agere Systems Inc.

Samsung Electro-mechanics Co., Ltd.

Dukhyun Kim

Ming-Ju Ho

Youngsik Hur

Michael Scott Rawles

John Leslie Blair

Fan Fei

Yun Ho Lee

Jeong Hoon Kim

Young Sik Hur

Marcel Johannes Gerhardus Vriikorte

Marcel Johannes Gerhardus Vrijkorte

Systems and methods pertaining to wireless power transfer are disclosed. Specifically, disclosed herein are calibration procedures that incorporate transmission of a reference power charge from a wireless power charger to permit determination of an optimized receiver circuitry configuration in one or more wirelessly chargeable devices. The result of the calibration procedures may then be used by the wireless charger to assign various frequencies to several wirelessly chargeable devices so as to optimally transfer a steady state power charge at one or more frequencies to the wirelessly chargeable devices.

Calibration and assignment processes in wireless power transfer systems

Systems and methods pertaining to wireless power transfer are disclosed. In one implementation, a system includes a wireless charger that is used to charge at least one wirelessly chargeable device. The wireless charger includes a master communication system and at least one wireless power charge transmitter, while the wirelessly chargeable device includes a slave wireless communication system configured at least in part, for communicating with the master wireless communication system in order to execute a wireless power charging operation. The wirelessly chargeable device further includes a wireless power charge receiver configured to receive a wireless power charge from the wireless power charge transmitter contained in the wireless charger.

Wireless power transfer system and methods

Systems and methods may be provided for transmitter calibration. The systems and methods may include providing one or more radio frequency (RF) test signals at an output of a transmitter, wherein the one or more RF test signals are based upon IQ baseband test signals, and applying an envelope detector to the one or more test signals to obtain one or more characteristic signals from the one or more RF test signals, where the one or more characteristic signals includes one or more first harmonic components and one or more second harmonic components associated with the one or more RF test signals. The systems and methods may further include analyzing the one or more second harmonic components to determine one or more IQ mismatch compensation parameters, and analyzing the one or more first harmonic components to determine one or more carrier leakage or DC offset compensation parameters.

Systems and methods for transmitter calibration

In communications between a pair of stations using modulated carrier signals, a first station estimates the carrier frequency offset with respect to the second station and transmits signals that are responsive to the estimated carrier frequency offset. The first station may adjust the carrier frequency of the signals it transmits in response to the estimated carrier frequency offset, and/or transmit data to the second station representing the estimated carrier frequency offset. The second station adjusts the carrier frequency of the signals it transmits to the first station, and/or compensates for carrier frequency offset in its processing of received signals, in response to estimated carrier frequency offset data received from the first station.

Frequency offset compensation for communication systems

In the method and apparatus of controlling power of a transmitted communication signal, a communication signal is amplified and transmitted. At least one parameter on the transmitted signal is received, and a measure of interference with the transmitted signal is determined based on the received parameter. An average power level of the communication signal is increased by clipping the communication signal prior to amplification by an amount based on the determined measure.

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Marietta, GA, United States of America

Dukhyun Kim