Abstract: A receiver (36; 43) that is built to receive a load modulated analog input signal (3) and built to output digital data (4) detected in the input signal (3), which receiver (36; 43) comprises: either a first in-phase correlator (38) and a second in-phase correlator (40) or a first quadrature-phase correlator (45) and a second quadrature-phase correlator (46), which first in-phase correlator (38) comprises: a first in-phase subcarrier mixer (23-1) and a first subtraction stage (39) built to subtract an output signal (28-2) of the second quadrature-phase subcarrier mixer (23-4) from an output signal (27-1) of the first in-phase subcarrier mixer (23-1) and an integrator (26) built to continuously integrate an output signal of the first subtraction stage (39) over time during an integration window to provide the output signal of the first in-phase correlator (38); which second in-phase correlator (40) comprises: a second in-phase subcarrier mixer (23-2) and an first addition stage (41) built to add an outpu

Abstract: Mobile device (1) for wireless communication with another device in the HF frequency area, which mobile device (1) comprises: a communication stage (3) with a communication unit (4) connected via a first matching unit with a first antenna to optimize for a load modulated communication with the other device; a charge stage (13) with a charge unit (14) connected via a second matching unit with a second antenna to optimize for wireless charging of a battery (2) of the mobile device (1), wherein that the first and second antennas are realized as only one single antenna (9) and that the communication stage (3) comprises a first switch stage (6) arranged in the path between the communication unit (4) and the single antenna (9) to connect or disconnect the communication unit (4) to/from the single antenna (9) and that the charge stage (13) comprises a second switch stage (16) arranged in the path between the charge unit (14) and the single antenna (9) to connect or disconnect the charge unit (14) to/from the single

Abstract: A pass-through device is provided. The device includes a contactless RFID interface circuit that exchanges payload data with an RFID device, a wired contact interface circuit with at least two contact pins for wires to connect the pass-through device with an application device, a volatile memory for temporary storing payload data and a non-volatile memory, a buffer management circuit to manage write operations of payload data received from the contactless RFID interface circuit into at least a first buffer and a second buffer in the volatile memory and to manage read operations of payload data stored in the first buffer and second buffer to be transmitted with the wired contact interface circuit to pass the payload data through without storage of payload data in the non-volatile memory.

Abstract: A device built to process a wireless interface communication type application is provided. The device includes a host controller circuit built to process device applications, that use the wireless interface communication type application, and built to process a host driver that communicates wired based on a first interface protocol. The device further includes a wireless interface controller circuit built to process a wireless interface for the wireless interface communication type application and built to process a controller driver that communicates wired with the host controller circuit.

Abstract: A digital power amplifier to drive an RFID antenna with an antenna signal of a substantial sinusoidal output current. This digital power amplifier includes a switching element built to switch at least one of the 2*W driver blocks from a contributing mode into a none-contributing mode, in which none-contributing mode the driver block does not contribute with an increment of charge to the output current to adjust the amplitude and/or the waveform of the output signal.

Abstract: A system including a power device and a portable device for wireless powering of a load of the portable device is provided. The power device includes a transmitter stage to generate a carrier signal and an antenna connected to the transmitter stage to emit a magnetic field with a first waveform of the carrier signal. The portable device includes an antenna exposed to the magnetic field of the power device to receive an antenna signal and a receiver stage connected to the antenna to rectify the antenna signal to provide power to the load of the portable device. The power device is built to emit the magnetic field with the first waveform of the carrier signal in a power transfer mode and to emit the magnetic field with a second waveform of the carrier signal in a communication mode.

Abstract: A receiver exposed to a magnetic field with a specified carrier frequency in the RF frequency area and configured to extract an internal clock signal for processing of data with a receiver IC. The receiver includes an antenna configured to receive an antenna signal and a tuning circuit and configured to provide a first received signal at a first pin of the receiver IC and a second receiver signal at a second pin of the receiver IC. The receiver IC includes a harvesting stage configured to rectify a differential received signal provided between the first pin and the second pin of the receiver IC and configured to provide a supply voltage referenced to a ground potential for the receiver IC, and a clock extraction stage configured to provide a first threshold level to switch the internal clock signal with a rectangular signal shape between high and low potential.

Abstract: An autonomous power supply switch with a main supply input and a backup supply input and a supply output to supply the power provided at the main supply input and to switch to the backup supply input, if the power at the main supply input is below a switch threshold. The switch includes a first switch transistor connected between the main supply input and the supply output with its gate/base connected to a first steering point of the switch and a second switch transistor connected between the backup supply input and the supply output with its gate/base connected to a second steering point of the switch; an inverter or Schmitt trigger with its input connected to the second steering point and its output connected to the first steering point and its power supply connected to the backup supply input of the switch.

Abstract: A system of a transmitter device for the transmission of an analog signal and/or digital data provided to the system at a transmitter interface of the transmitter device is disclosed. The transmitter interface includes at least two parallel information lines. The system includes a receiver device with a receiver interface to receive the analog signal and/or digital data. The receiver interface includes the same number of parallel information lines. A transmitter protocol unit processes the analog signal and/or digital data to generate a serial data stream that includes reconstruction information. Transmission is performed via an electromagnetic field. The receiver device includes a receiver protocol unit to process and reconstruct the received serial data stream. The transmitter device is powered by electrical power provided at two power lines of the transmitter interface. The receiver device is adapted to provide power received from the transmitter device using a power recovery unit.

Abstract: A transmitter (1; 21) to transmit an amplitude modulated data signal (2) in an RF-Field (3) over the air to a receiver (4) of an RFID communication system (5; 22) which transmitter (1; 21) comprises: a wave generator (6) to generate a carrier signal (7) with a particular frequency and waveform; a modulation stage (15) to modulate the carrier signal (7) in relation to a data signal to be transmitted; an antenna (11) connected to the modulation stage (15) or wave generator (6) via an amplifier (9) and a matching circuit (10) to transmit the amplitude modulated data signal (2) in the RF-Field (3) over the air, characterized in that the transmitter (1; 21) furthermore comprises: a shape stage (16) connected to the wave generator (6) to select the waveform of the carrier signal (7) depending directly or indirectly on the data signal.