An antenna assembly for use with a medical implant includes an antenna that defines at least one turn and an electromagnetic shield.

An antenna assembly for use with a medical implant includes an antenna that defines at least one turn and an electromagnetic shield.

Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.

A blender system that includes a base that is select ively and operatively engaged with a container is shown and described herein. The base may include a near field communications chip that may communicate with a near field communications chip of a container. The base also includes a motor that is selectively and operatively engaged with a blade disposed within the container.

A device for high-frequency communication and for the inductive charging of an apparatus, including a charging surface, at least one charging antenna emitting a magnetic field at a low frequency and a layer of ferromagnetic material. The device includes at least one communication antenna and a printed circuit board. The communication antenna is in the form of a coil locally surrounding the layer with an axis of symmetry located in a plane parallel to the layer. The material of the layer is selected so as to have, at high frequency, an imaginary part with sufficiently high permeability to generate leaks on a surface of the layer extending perpendicular to the layer, while at the same time maintaining, at low frequency, an imaginary part with sufficiently low permeability to allow inductive charging.

A system for measuring a deformation of a structure configured to be installed on an aircraft includes deformation sensor means configured to be associated with the structure and to assume an electrical resistance value indicative of the deformation of the structure and having two short-circuited electrical connection terminals to recreate a closed circuit, magnetic field excitation means having a laser generator and configured to generate a magnetic field concatenated with the closed circuit to generate an induced current, electromagnetic radiation, transmission means having an antenna and configured to emit an electromagnetic radiation, value of the electromagnetic radiation being a function of the electrical resistance of the deformation sensor means, electromagnetic radiation receiving means having an antenna and configured to receive the electromagnetic radiation transmitted by the electromagnetic radiation transmission means, and control means for determining the deformation of the structure as a function of the value of electromagnetic radiation received.

In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: a transmitter configured to transmit one or more radio frequency signal pulses; a detection unit configured to detect one or more load changes at a radio frequency interface occurring in response to the radio frequency signal pulses transmitted by the transmitter, wherein said load changes are indicative of the presence of an external communication device; a first clock generator comprising a free-running oscillator, wherein said first clock generator is configured to provide a clock signal to the transmitter and the detection unit while said transmitter transmits said radio frequency signal pulses and the detection unit detects said load changes. In accordance with a second aspect of the present disclosure, a corresponding method of operating a communication device is conceived.

Disclosed are methods for exchanging transaction data, including transmitting a first public encryption key and transaction data associated with a transaction to a computing device via a near field communication (NFC) connection, receiving a second public encryption key and a transaction message associated with the transaction via the NFC connection, and appending the second public encryption key and the transaction message associated with the transaction to a database stored in a memory in communication with at least one integrated circuit, wherein the at least one integrated circuit is powered by an electromagnetic field generated by the computing device. Systems and computer program products are also provided.

A batteryless wireless sensor system includes a data acquisition system, a radio frequency (RF) transceiver, and a batteryless wireless sensor device. The RF transceiver is in communication with the data acquisition system, transmits a RF signal, and receives sensor data and provide the sensor data to the data acquisition system. The batteryless wireless sensor device includes a RF transmitter, an analog to digital converter (ADC), and a sensor. The batteryless wireless sensor harvests energy from the RF signal and generates a DC signal based on the energy harvested from the RF signal, powers up and operates the ADC and the sensor based on the DC signal, and generates sensor data. The batteryless wireless sensor then transmits the sensor data via the RF transmitter to the RF transceiver. In certain examples, the ADC is implemented as a current mode ADC.

A system and method for bi-directional communication through capacitive coupling is achieved with capacitive plates within the environment of a wireless power transfer system. Data is transferred using capacitance over a separate path from the transfer of electrical power in the wireless power transfer system.