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.

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.

Abstract: A digital power amplifier comprises: an integrated circuit (IC2); an adaption circuit of discrete components connected to first and second transmission output pins of an integrated circuit to adapt the output signal and feed a substantial sinusoidal output current with a transmission resonance frequency to an RFID antenna. IC2 comprises a digital control section with N wave-forming contacts to output a digital wave-forming bit combination of N bits with a clock frequency M-times the transmission resonance frequency; N driver blocks each connected with a first contact to one of the wave-forming contacts and N/2 of them connected with a second contact to the first transmission output pin and the other N/2 of them connected with their second contact to the second transmission output pin. The driver blocks provide increments of the substantial sinusoidal output current to the first and second transmission output pins.

Abstract: A device (5; 16; 26) that processes a Near Field Communication type application which device (5; 16; 26) comprises: a host controller circuit (3; 27) that processes device applications, that use the Near Field Communication type application, and that processes a host driver (7; 28) that communicates based on a first interface protocol (NCI; EMV); a NFC controller circuit (4; 33) that processes a Near Field Communication type contactless interface (6; 35) and a controller driver (11; 32) that interfaces with the host controller circuit (3; 27), wherein the host controller circuit (3; 27) processes a first transmission module (9; 30) that interfaces with the host driver (7; 28) based on the first interface protocol (NCI; EMV) and with the controller driver (11; 32) based on a second interface protocol, which first transmission module (9; 30) furthermore processes substantially all none-time critical and/or memory consuming tasks of the Near Field Communication type application and wherein the NFC controller cir

Abstract: A device (1)) with an antenna that receives a target carrier signal (3) from a remote target (2) and transmits a device carrier signal (6) modulated with data to communicate data between the device (1) and the target (2), which device (1) comprises: clock extraction means (4) to extract a target clock (5) from the target carrier signal (3); driver means (9) to generate the device carrier signal (6) from a device clock (8); synchronization means (7) to synchronize the frequency and phase of the device clock (8) with the target clock (5), wherein that the synchronization means (7) comprise: time measurement means (10) to measure the phase difference between the target clock (5) and the device clock (8) or an internal device clock (33) related to the device clock (8) and to provide a phase information (?1,?2,?3); measurement control means (20) to initiate a first time measurement that results in a first phase information (?) and to initiate a second time measurement a fixed time period (?T) after the first time

Abstract: A reader (5) with an antenna (6) that transmits a HF field (10) with a carrier frequency and receives an analog input signal (11) with the antenna (6), which analog input signal (11) may be load modulated with a modulation frequency, and outputs digital data detected in the input signal (11), which reader (5) comprises: a mixer (13, 15) that mixes the input signal (11) with a carrier frequency signal (9, 16) and provides a mixed output signal (14); target detection means (22) to detect the presence of a target in the HF field (10) and to activate processing of the input signal (11) to communicate with the target, wherein target detection means (22) comprise: low-pass filter means (23, 25) to eliminate signal components of the mixed output signal (14) at the modulation frequency and above and to provide a filtered output signal (24); quantification means (32) that quantify the filtered output signal (24) and provide quantified detection data (33); decision means (36) that compare the quantified detection data

Abstract: A Digital power amplifier (13) to drive an RFID antenna (10) with a substantial sinusoidal output current (I) which digital power amplifier (13) comprises: an integrated circuit (IC2) with a first transmission output pin (15) and a second transmission output pin (16) to provide an output signal (17); an adaption circuit (14) of discrete components (C2a, C2b) connected to the first and second transmission output pin (15, 16) to adapt the output signal (17) and feed the substantial sinusoidal output current (I) with a transmission resonance frequency to the RFID antenna (10), wherein the integrated circuit (IC2) comprises: a digital control section (19) with a number of N wave-forming contacts (20) to output a digital wave-forming bit combination of N bits with a clock frequency M-times the transmission resonance frequency; a number of N driver blocks (21) each connected with a first contact (22) to one of the wave-forming contacts (20) and a number of N/2 of them connected with a second contact to the first tr

Abstract: A receiver receives a load modulated analog input signal and outputs digital data detected in the input signal. An in-phase correlator and a quadrature-phase correlator for each of an in-phase component and an quadrature-phase component correlate the in-phase component and the quadrature-component with an in-phase component and a quadrature-phase component of a subcarrier or code clock frequency of the input signal. A combiner combines four output signals of the two in-phase correlators and the two quadrature-phase correlators. A slicer samples an output signal of the combiner at maximum energy levels to output the digital data detected in the input signal.

Abstract: A Receiver (17) that receives a load modulated analog input signal (19) and outputs digital data (20) detected in the input signal (19), which receiver (17) comprises: an in-phase mixer (21) that mixes the input signal (19) with an in-phase carrier frequency (22) and provides an in-phase component (23) of the down-converted input signal and a quadrature-phase mixer (24) that mixes the input signal (19) with a quadrature-phase carrier frequency (25) and provides a quadrature-phase component (26) of the down-converted input signal; an amplifier (29, 30) to amplify the in-phase component (23) and the quadrature-phase component (26) of the down-converted input signal; a DC block filter (31) to remove the DC component of the in-phase component (23) and the quadrature-phase component (26), wherein the receiver furthermore comprises: an in-phase correlator (33, 34) and a quadrature-phase correlator (35, 36) for each of the in-phase component (23) and the quadrature-phase component (26) to correlate the in-phase comp

Abstract: A device (5; 16; 26) that processes a Near Field Communication type application which device (5; 16; 26) comprises: a host controller circuit (3; 27) that processes device applications, that use the Near Field Communication type application, and that processes a host driver (7; 28) that communicates based on a first interface protocol (NCI; EMV); a NFC controller circuit (4; 33) that processes a Near Field Communication type contactless interface (6; 35) and a controller driver (11; 32) that interfaces with the host controller circuit (3; 27), wherein the host controller circuit (3; 27) processes a first transmission module (9; 30) that interfaces with the host driver (7; 28) based on the first interface protocol (NCI; EMV) and with the controller driver (11; 32) based on a second interface protocol, which first transmission module (9; 30) furthermore processes substantially all none-time critical and/or memory consuming tasks of the Near Field Communication type application and wherein the NFC controller cir

Abstract: According to one embodiment, a chip card is described including a chip, an antenna, a coupling structure configured to transmit energy from the antenna to the chip and a control element configured to control, depending on a field strength of a magnetic field to which the chip card is exposed, at least one of the resonance frequency of the antenna, the quality factor of the antenna and an energy transmission efficiency of the coupling structure.

Abstract: According to one embodiment, a chip card is described including a chip, an antenna, a coupling structure configured to transmit energy from the antenna to the chip and a control element configured to control, depending on a field strength of a magnetic field to which the chip card is exposed, at least one of the resonance frequency of the antenna, the quality factor of the antenna and an energy transmission efficiency of the coupling structure.

Abstract: One embodiment of the present invention relates to an analog correlation unit comprising a plurality of parallel correlation components configured to operating according to an advanced switched-capacitor low pass filter principle that increases coding gain of the unit. Each correlation component comprises a sampling stage and a correlation stage. The sampling stage may comprise a switched capacitor configured to sample a received baseband signal to determine a value (e.g., polarity) of the baseband signal. The sampled baseband signal is provided to the correlation stages, which may respectively comprise a plurality of switched integrators configured to selectively receive and integrate the sampled baseband signal over time depending upon values (e.g., polarity) of the correlation code to generate voltage potential values. The analog correlation result is evaluated by a comparison of an adjustable threshold voltage with the difference between the output voltage potential values.

Abstract: Next-generation intelligent tire systems, such as active and adaptive tire systems and methods, are disclosed. Various embodiments of the invention can sense actual tire, road and driving conditions and characteristics, and/or respond to externally controlled influences, and dynamically adapt thereto, thereby improving vehicle and passenger safety.

Abstract: One embodiment of the present invention relates to an analog correlation unit comprising a plurality of parallel correlation components configured to operating according to an advanced switched-capacitor low pass filter principle that increases coding gain of the unit. Each correlation component comprises a sampling stage and a correlation stage. The sampling stage may comprise a switched capacitor configured to sample a received baseband signal to determine a value (e.g., polarity) of the baseband signal. The sampled baseband signal is provided to the correlation stages, which may respectively comprise a plurality of switched integrators configured to selectively receive and integrate the sampled baseband signal over time depending upon values (e.g., polarity) of the correlation code to generate voltage potential values. The analog correlation result is evaluated by a comparison of an adjustable threshold voltage with the difference between the output voltage potential values.

Abstract: Next-generation intelligent tire systems, such as active and adaptive tire systems and methods, are disclosed. Various embodiments of the invention can sense actual tire, road and driving conditions and characteristics, and/or respond to externally controlled influences, and dynamically adapt thereto, thereby improving vehicle and passenger safety.

Abstract: Embodiments relate to intelligent tire systems and methods. In an embodiment, a sensor module mounted in a tire includes a sensor configured to generate sensor data related to a condition of the tire; and a transceiver communicatively coupled to the sensor and configured to communicate with another in-tire sensor module and with a control unit external to the tire.

Abstract: Embodiments of the present invention provide a wheel unit configured to transmit a transmit signal at a predefined rotational position of a wheel rotating around a rotational axis, when the wheel unit is attached to the wheel.

Abstract: An active and adaptive tire system is disclosed. The active and adaptive tire system comprises a tire and an active material configured to alter at least one characteristic of the tire in response to at least one condition. Also disclosed are an intelligent tire system and a method of monitoring a condition.

Abstract: A transmitter circuit. One embodiment provides for emitting electromagnetic waves. The circuit has a transmitting device for outputting a transmission signal, an antenna device for emitting the transmission signal in the form of an electromagnetic wave, and a matching device which is electrically connected to the transmitting device and to the antenna device. The matching device includes at least two tuning elements for setting the resonant frequency of a circuit arrangement, formed from the antenna device and the first and second tuning elements, and for matching the impedance of the transmitting device and the antenna device.