Systems and methods are provided for wireless transmission of power or information. A supplying system include a signal source and a transmitter unit. A consuming system includes an electrical load and a receiver unit. Electrical power or information are transmitted wirelessly from the supplying system to the consuming system. The transmitter unit can include a step up transformer. The receiver unit can include a step down transformer. The transmitter unit and receiver unit are not connected to a common ground, resulting in a truly wireless system for transmitting power or information.

A wireless communication system includes a first communication device and a second communication device. The first communication device includes a modulator configured to provide modulation and a first coupler configured to wirelessly transmit a signal. The second communication device includes a second coupler configured to wirelessly receive a signal by being coupled to the first coupler by at least one of electric-field coupling or magnetic-field coupling and a demodulator configured to provide demodulation. The first communication device or the second communication device includes an equalizer configured to provide equalization.

A capacitive coupling circuit device is provided with a capacitive coupling circuit and a ground-side feedback circuit. The capacitive coupling circuit demodulates a modulated signal, which is obtained by modulating an input signal and transmitting a modulated input signal through a coupling capacitor. The ground-side feedback circuit is inserted between a first ground terminal on a signal input side of the capacitive coupling circuit and a second ground terminal on a signal output side of the capacitive coupling circuit. The ground-side feedback circuit is configured by connecting a second capacitor in series to a parallel circuit of a first capacitor and a first resistor. Alternatively, the ground-side feedback circuit may be configured by connecting the second capacitor and a third capacitor in series to both ends of the parallel circuit of the first capacitor and the first resistor, respectively.

A wireless communication system includes a first coupler having a first pair of electrodes and second coupler having a second pair of electrodes that at least partially oppose the first pair of electrodes. A transmission circuit applies a differential signal to the first coupler. A reception circuit receives a differential signal output from the second coupler based on electromagnetic coupling between the first coupler and the second coupler. A distance between centroids of the first pair of electrodes differs from a distance between centroids of the second pair of electrodes.

There is provided a communication device comprising: a wireless communication circuit configured to control wireless communication with a portable device in conformity with a specific communication standard; a capacitive sensor circuit configured to detect proximity of an object on a basis of a change in capacitance; an antenna configured to be used for both transmitting/receiving a wireless signal conforming to the specific communication and detecting the capacitance; a high-pass filter disposed between the wireless communication circuit and the antenna; and a low-pass filter disposed between the capacitive sensor circuit and the antenna, wherein the communication device is configured to be disposed in a gripping portion to be gripped by a user carrying the portable device.

Using inductive currents to wirelessly charge a device via a device connected to a power source. This inductive charging may result when a first mobile device recognizes a second mobile device via a wireless connection (e.g., Bluetooth, Bluetooth Low Energy (BLE), Near-Field Communication (NFC), or the like). An application stored on the first mobile device may recognize a second mobile device by transmitting an advertising packet when the first mobile device is connected to a power source. An advertising packet may be received by the second mobile device and the second mobile device may transmit a response to the advertising packet in order to generate a connection between the first and second mobile devices. The response may include data such as, connection strength, response time, connection preferences, and the like. Upon detection and connection, the second mobile device may be wirelessly charged by the first device via inductive charging.

A supply-side non-metallic contactless electrical power connector includes a housing with a metal-free coupling interface for coupling to a non-metallic load connector. A power supply electrically connects to an external power supply. A contactless electrical power transmitter is disposed within the housing and adjacent to the coupling interface. A reed switch is disposed within the housing and enters an activated state when in proximity to a magnetic field generated by the load connector. The reed switch is in electrical communication with the power supply and the contactless electrical power transmitter such that when the reed switch is activated, the contactless electrical power transmitter is electrically connected to the power supply and is enabled to contactlessly transmit electrical power to the load connector, and when the reed switch is inactivated, the reed switch prevents electrical connection between the power supply and the contactless electrical power transmitter.

A standard RF connector assembly for wireless communications antenna system. The RF connector assembly includes a first connector housing incorporating an RF connector, the housing including a first latch plate attached to the housing and has at least two toggle mounts. A toggle is attached to each toggle mount and each toggle includes a metal band pivotably attached to the toggle. A second connector housing incorporating a second RF connector includes a second latch plate attached to the second housing and has at least two tabs configured to be engaged by the metal bands to secure the first and second housing into latched engagement with each other.

Various receiver electrodes for supplying power to a load connected in a capacitive power transfer system are disclosed. In one embodiment, the receiver electrodes include a first conductive plate (212) connected to a first sphere-shaped hinge (211), wherein the first sphere-shaped hinge is coupled to a first receiver electrode (210); and a second conductive plate (222) connected to a second sphere-shaped hinge (221), wherein the second sphere-shaped hinge is coupled to a second receiver electrode (220), the second receiver electrode being connected to an inductor of the capacitive power transfer system and the first receiver electrode being connected to the load, the inductor being connected to the load to resonate the capacitive power transfer system.

A smart card including a card body having a metal layer including a recess area which opens onto a peripheral edge of the metal layer, an RF chip, a first RF antenna connected to the RF chip and disposed in or facing the recess area, and a second RF antenna electrically insulated from the metal layer and from the first RF antenna. The second RF antenna includes a first antenna part extending facing the metal layer to collect an image current induced by first eddy currents flowing in the metal layer, and a second antenna part electrically connected to the first antenna part and extending facing the recess area to allow a magnetic coupling between the first RF antenna and the second RF antenna.