Abstract:
An apparatus is described. The apparatus includes a transmission coil and a power amplifier. The power amplifier includes a microcontroller and a memory. The memory includes instructions to determine electric current output of the power amplifier, perform a lookup of load reactance range based on target electric current, detect load impedance, calculate reactance based on the load impedance, determine if reactance is within the load reactance range, and adjust reactance shift compensation to bring the reactance within the load reactance range if the reactance is not within the load reactance range.
Abstract:
Systems and methods may provide for a wireless charging device having a concave-shaped charging platform defining a charging area. The wireless charging device may include a three-dimensional transmitter coil, and at least one additional transmitter coil having a non-uniform spacing within the concave-shaped charging platform to reduce magnetic field variations associated with the three-dimensional transmitter coil.
Abstract:
An apparatus is described. The apparatus includes a transmission coil and a power amplifier. The power amplifier includes a microcontroller and a memory. The memory includes instructions to determine electric current output of the power amplifier, perform a lookup of load reactance range based on target electric current, detect load impedance, calculate reactance based on the load impedance, determine if reactance is within the load reactance range, and adjust reactance shift compensation to bring the reactance within the load reactance range if the reactance is not within the load reactance range.
Abstract:
The disclosure generally relates to a method and apparatus for wireless charging station with adaptive radio interference detection and control. During wireless charging of a smart device, the harmonics associated with the magnetic resonance coupling between the power transmission unit (PTU) and the power receiving unit (PRU) may interfere with radio communication if PRU engages in radio messaging. The disclosed embodiments provide method and system for identifying interference and adapting the wireless charging power to reduce or eliminate interference while efficiently charging the PRU.
Abstract:
A device for wirelessly charging a battery includes a power amplifier having a transmitter coil generating a magnetic field for wirelessly charging a battery. A low pass filter arrangement is electrically coupled to an output of the power amplifier. A band stop filter is electrically coupled to an output of the low pass filter arrangement. An output of the band stop filter is electrically coupled to a resistive load associated with the battery. The low pass filter arrangement and the band stop filter are configured to transform a load impedance associated with the transmitter coil to produce a current at the output of the power amplifier that remains substantially constant in response to changes in the load impedance.
Abstract:
The disclosure relates to a method, apparatus and system for reconfigurable wirelessly charging architecture for extended power capability and charging area. In certain embodiments, the disclosed embodiments relate provide a scalable wireless charging architecture which may include a constant voltage operating point between power amplifier (PA) and resonator modules to thereby support dynamic expansion of service area for larger infrastructure deployment.
Abstract:
Techniques for tuning in a wireless power transmitter in a system, method, and apparatus are described herein. For example, an apparatus may include a transmitter coil configured to generate a magnetic field. The apparatus may also include a set of capacitors in series with the transmitter coil, wherein a capacitance value for each of capacitors in the set is associated with a reactance shift.
Abstract:
Systems and methods may provide for a wireless charging device having a concave-shaped charging platform defining a charging area. The wireless charging device may include a three-dimensional transmitter coil, and at least one additional transmitter coil having a non-uniform spacing within the concave-shaped charging platform to reduce magnetic field variations associated with the three-dimensional transmitter coil.
Abstract:
Techniques for tuning in a wireless power transmitter in a system, method, and apparatus are described herein. An example of a wireless power transmitter may include a transmitter coil configured to generate a magnetic field for wirelessly charging a battery, and a tuning circuit coupled to the transmitter coil configured to retune the transmitter coil in response to a reactance shift of the transmitter coil. The wireless power transmitter may also include a tuning control circuit to detect the reactance shift and control the tuning circuit to retune the transmitter coil. The tuning control circuit is to detect the reactance by measuring a drain voltage of a power amplifier.
Abstract:
Techniques for tuning in a wireless power transmitter in a system, method, and apparatus are described herein. For example, an apparatus may include a transmitter coil configured to generate a magnetic field. The apparatus may also include a set of capacitors in series with the transmitter coil, wherein a capacitance value for each of capacitors in the set is associated with a reactance shift.