Infineon Technologies Ag

Panthronics Ag

Austriamicrosystems Ag

Renesas Design Austria Gmbh

Ams Ag

Jakob Jongsma

Horst Theuss

Dirk Hammerschmidt

Michael Pieber

Franz Michael Darrer

Thomas Herndl

Stephan Rampetzreiter

Martin Buchsbaum

Tomaz Felicijan

Andreas Woerle

Christian Hambeck

Jan Crols

Vjekoslav Matic

Bernhard Wedl

Georg Skacel

Stefan Mahlknecht

Hamzeh Nassar

Steven Gabriels

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

Wave-shaping for over- and undershoot prevention

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.

High-voltage digital power amplifier with sinusoidal output for RFID

A device () that processes a Near Field Communication type application which device () comprises: a host controller circuit () that processes device applications, that use the Near Field Communication type application, and that processes a host driver () that communicates based on a first interface protocol (NCI; EMV); a NFC controller circuit () that processes a Near Field Communication type contactless interface () and a controller driver () that interfaces with the host controller circuit (), wherein the host controller circuit () processes a first transmission module () that interfaces with the host driver () based on the first interface protocol (NCI; EMV) and with the controller driver () based on a second interface protocol, which first transmission module () furthermore processes substantially all none-time critical and/or memory consuming tasks of the Near Field Communication type application and wherein the NFC controller circuit () comprises a second transmission module () that processes all time critical tasks for the Near Field Communication type application towards the Near Field Communication type contactless interface ().

NFC 'split stack' architecture

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.

Receiver to process a load modulated analog input signal

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.

Chip card and control element

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.

Analog correlation technique for ultra low power receivers

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.

Active and adaptive tire systems

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.

Intelligent tire systems and methods

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.

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.

Transmitter circuit

The invention is related to intelligent tire systems and methods. In one embodiment, an intelligent tire system (ITS) comprises a first sensor device, a second sensor device, a central control unit, and a transceiver. The first sensor device is mounted in a tire of a vehicle and comprises a radio frequency (RF) transmitter. The second sensor device is mounted in the tire and comprises an RF transceiver, the second sensor device adapted to receive a transmitter transmission from the first sensor device comprising first sensor data. The central control unit is mounted in the vehicle. The transceiver is mounted in the vehicle and is adapted to receive a transceiver transmission from the second sensor device comprising first sensor data and second sensor data and to transmit the transceiver transmission to the central control unit.

A current mirror arrangement comprising two transistors () which are of different conductivity types and are each suitable for outputting a bias current (PBIAS, NBIAS) is specified. A controlled current source () is connected between the two transistors () and forms the output of a current mirror (). The proposed principle ensures that the output bias signals (PBIAS, NBIAS) match one another in a highly precise manner. The proposed current mirror arrangement may preferably be integrated using CMOS circuit technology.

Growing community of inventors

Graz, Austria

Jakob Jongsma