A module and method relating to measuring power supply to a load are described. The module includes a high pass filter corresponding to a first frequency range and configured to communicate a high frequency current signal. The module includes a low pass filter corresponding to a second frequency range configured to communicate a low frequency current signal. A signal combiner is configured to combine the low frequency current signal and the high frequency current signal, thereby generating a combined current signal. A voltage channel is configured to sense a voltage difference across the load and communicate a voltage signal corresponding to the voltage difference across the load. One or more processors in communication with a memory having non-transitory machine readable instructions stored thereon are configured to receive the combined current signal, receive the voltage signal, and determine a power metric based on the combined current signal and the voltage signal.

A system may include a resistive-inductive-capacitive sensor, a driver configured to drive the resistive-inductive-capacitive sensor at a driving frequency, and a measurement circuit communicatively coupled to the resistive-inductive-capacitive sensor and configured to measure phase information associated with the resistive-inductive-capacitive sensor and based on the phase information, determine a displacement of a mechanical member relative to the resistive-inductive-capacitive sensor, wherein the displacement of the mechanical member causes a change in an impedance of the resistive-inductive-capacitive sensor.

Some embodiments relate to power detector including a voltage sensor configured to detect a voltage of a load and a current sensor configured to detect a current of the load. The power detector also includes circuitry configured to introduce a phase delay between the detected voltage of the load and the detected current of the load, thereby producing a voltage measurement and a current measurement. The circuitry is also configured to multiply the voltage measurement and the current measurement.

Some embodiments relate to power detector including a voltage sensor configured to detect a voltage of a load and a current sensor configured to detect a current of the load. The power detector also includes circuitry configured to introduce a phase delay between the detected voltage of the load and the detected current of the load, thereby producing a voltage measurement and a current measurement. The circuitry is also configured to multiply the voltage measurement and the current measurement.

Wireless charging methods, chargers and devices are disclosed, including a method of measuring wireless charging performance comprising transmitting a wireless charging signal, measuring a transmitted power of the wireless charging signal, receiving an indication of a received power from the wireless charging signal received by a device, and determining wireless charging performance based on the transmitted power and the indication of the received power.

An electric meter is disclosed. The electric meter comprises a first set of conductive paths configured to connect a first phase of an electric distribution power source, a first phase of a first distributed energy resource device, a first phase of a second distributed energy resource device, and a first phase of a load. The electric meter comprises a second set of conductive paths configured to connect a second phase of the electric distribution power source, a second phase of the first distributed energy resource device, a second phase of the second distributed energy resource device, and a second phase of the load. Also disclosed is a method of use of the electric meter and an electric meter system.

An electric meter is disclosed. The electric meter comprises a first set of conductive paths configured to connect a first phase of an electric distribution power source, a first phase of a first distributed energy resource device, a first phase of a second distributed energy resource device, and a first phase of a load. The electric meter comprises a second set of conductive paths configured to connect a second phase of the electric distribution power source, a second phase of the first distributed energy resource device, a second phase of the second distributed energy resource device, and a second phase of the load. Also disclosed is a method of use of the electric meter and an electric meter system.

A method for modeling cable loss is described. The method includes receiving a measurement of reverse power and forward power at a radio frequency (RF) generator. The method further includes computing theoretical power delivered to a matching network as a difference between the forward power and the reverse power and calculating a ratio of the reverse power to the forward power to generate an RF power reflection ratio. The method further includes identifying a cable power attenuation fraction based on a frequency of the RF generator and calculating a cable power loss as a function of the RF power reflection ratio, the cable power attenuation fraction, and the theoretical power. The method includes calculating actual power to be delivered to the impedance matching network based on the theoretical power and the cable power loss and sending the calculated actual power to the RF generator to generate an RF signal.

A method for modeling cable loss is described. The method includes receiving a measurement of reverse power and forward power at a radio frequency (RF) generator. The method further includes computing theoretical power delivered to a matching network as a difference between the forward power and the reverse power and calculating a ratio of the reverse power to the forward power to generate an RF power reflection ratio. The method further includes identifying a cable power attenuation fraction based on a frequency of the RF generator and calculating a cable power loss as a function of the RF power reflection ratio, the cable power attenuation fraction, and the theoretical power. The method includes calculating actual power to be delivered to the impedance matching network based on the theoretical power and the cable power loss and sending the calculated actual power to the RF generator to generate an RF signal.

A circuit includes a current sensing circuit comprising a current input terminal coupled to an input port, a current output terminal coupled to a transmitted port, and a current sensing output terminal configured to provide a current sensing signal proportional to a current flowing between the current input terminal and the current output terminal. The circuit further includes a voltage sensing circuit having a voltage input terminal coupled to the transmitted port and a voltage sensing output terminal configured to provide a voltage sensing signal proportional to a voltage at the transmitted port. A combining circuit has a first input coupled to the current sensing output terminal, a second input coupled to the voltage sensing output terminal, and a combined output node coupled to an output port.