A triggerable power transmitter for power transmission from a primary coil to an inductively coupled secondary coil in a power receiver has a primary coil; a driver for electrically driving the primary coil; a probing coil receives analog signals indicative of resonance properties of the primary coil; analog filters may be used to filter frequencies, and a processor capable of generating digital information in response to the analog signal and determining if said primary coil is coupled to a secondary coil based on the digital information, and triggering power from the primary coil to said secondary coil when said primary coil is inductively coupled to said secondary coil. A resistor may be selectably connected in series with the primary coil and shorted out when power is transmitted.

A coupler includes a first and second coupler element, with a respective first and second transmission element. In an embodiment, a first signal contact for connection to a signal conductor is arranged on a first end of the first transmission element; a second signal contact for connection to a signal conductor is arranged on a first end of the second transmission element; the first transmission element forms a plurality of first U-shaped curves between the first end and a second end; and the second transmission element forms a plurality of second U-shaped curves between the first end and a second end. The first transmission element is configured, in operation, to transmit a signal supplied at the first signal contact to the second transmission element via directional coupling and the second transmission element is configured, in operation, to receive and output the signal via the second signal contact.

A load control system includes a load control device and a remote control for configuring and controlling operation of the load control device. The load control device and remote control may be mounted to an electrical wallbox. The system may be configured by associating the remote control with the load control device, and actuating a button on the remote control to configure the load control device. A second remote control device may be directly or indirectly associated with the load control device. The load control device and remote control may communicate via inductive coils that are magnetically coupled together. The remote control may be operable to charge a battery from energy derived from the magnetic coupling between the inductive coils. The load control device and remote control may include near-field communication modules that are operable to communicate wirelessly via near-field radiation.

Methods and systems are provided for aligning devices separated by physical barriers. A first electronic device may be paired with a second electronic device, with the first electronic device and the second electronic device being on opposite sides of a physical barrier. Wireless communication of signals between the first electronic device and the second electronic device may then be configured to nullify or reduce signals in areas other than a region within the barrier between a signal transmission component of the first electronic device and a signal reception component of the second electronic device. Feedback for enabling aligning the first electronic device with the second electronic device may be provided, such as to user of one or both of the first electronic device and the second electronic device. Providing the feedback may include generating visual and/or audio cues to enable the aligning.

The present invention relates to a device (700a, 700b, 700c) for wireless transmission of data and/or power between the device and another device of a system, in particular of a patient monitoring system. To meet stringent relative time errors at low complexity the device comprises a connector (701) comprising a data transmission unit (703) and a magnetic coupling unit (702, 704) for transmitting power to and/or receiving power. A detection unit (705) detects coupling of a counterpart connector of another device of the system with the connector (701). A control unit (707) uses the detection that a counterpart connector of another device of the system has been coupled with the connector (701) as a trigger to determine and/or reset a relative time difference between a clock signal used by the device and a clock signal of the other device using i) the high frequency power signal of the magnetic coupling unit (702, 704) and of a magnetic coupling unit of the counterpart connector and/or ii) a received time calibration signal for determining and/or resetting the relative time difference.

Embodiments of devices that improve radio frequency (RF) communication between an on body device and a second device are disclosed. Some of these embodiments pertain to a secondary communication system that captures an RF signal transmitted in a first directional pattern and retransmits it in the second directional pattern. Other embodiments pertain to a secondary communication system that provides an additional antenna positioned in a different location with which a user can communicate.

A load control system includes a load control device and a remote control for configuring and controlling operation of the load control device. The load control device and remote control may be mounted to an electrical wallbox. The system may be configured by associating the remote control with the load control device, and actuating a button on the remote control to configure the load control device. A second remote control device may be directly or indirectly associated with the load control device. The load control device and remote control may communicate via inductive coils that are magnetically coupled together. The remote control may be operable to charge a battery from energy derived from the magnetic coupling between the inductive coils. The load control device and remote control may include near-field communication modules that are operable to communicate wirelessly via near-field radiation.

Disclosed in the present invention are a wireless power and data synchronous transfer system and a data modulation method, wherein a power/information complex modulation is carried out on a primary side front converter and a secondary side back converter, and output power/information flow can be transmitted across the wireless power transfer circuit, thus realizing communication between the primary side and the secondary side. With the method of the present invention, by modulating a digital frequency band signal to a direct current bus, frequency mixing effect of an inverter/rectifier circuit is utilized to move a spectrum of modulated digital signal to a frequency near a power transfer frequency and then the modulated digital signal is transmitted to a circuit on the other side, and the circuit on the other side demodulates the signal to obtain a baseband signal. The present invention has wide applicability and can be used in various wireless power transfer systems, especially for high-frequency systems.

A system includes a first power transfer coil configured to be magnetically coupled to a second power transfer coil and an auxiliary coil adjacent to the first power transfer coil, wherein at least one of the first power transfer coil and the auxiliary coil comprises a first turn and a second turn circular in shape, and wherein the first turn and the second turn have a similar center position and a current flowing through the first turn and a current flowing through the second turn are in opposite directions.

One example discloses a near-field antenna, comprising: a magnetic (H) field antenna; an electric (E) field antenna; wherein the E-field antenna is galvanically insulated from the H-field antenna; and wherein the E-field antenna is configured to be inductively charged by the H-field antenna.