Infineon Technologies Ag

Infineon Technologies Austria Ag

Johannes Schweighofer

Christoph Steffan

Gerald Holweg

Inge Siegl

Carolin Kollegger

Rainer Matischek

David Lugitsch

Gregor Christandl

A power supply circuit is described herein which is capable of sourcing energy from an NFC antenna. In one embodiment, the circuit comprises a rectifier circuit configured to be coupled to an NFC antenna for receiving an antenna voltage, a filter coupled to an output of the rectifier circuit and configured to provide the rectified and smoothed antenna voltage as supply voltage, and a current limiting device coupled between the filter and an output node and configured to limit an output current provided at the output node dependent on a control signal. Further, the power supply circuit comprises a control circuit configured to receive the supply voltage and a reference voltage and to generate the control signal dependent on a difference between the reference voltage and the supply voltage.

Power supply circuit that sources energy from an NFC antenna

A circuit for an NFC chip is described herein. According to one exemplary configuration, the circuit comprises an antenna for near field communication, an antenna resonant circuit which has an adjustable resonant frequency, a temperature sensor and a controller circuit coupled to the temperature sensor. The controller circuit is designed to change the resonant frequency of the antenna resonant circuit according to a temperature sensor signal provided by the temperature sensor.

Circuit for wireless data transfer comprising temperature regulation

This disclosure includes a measuring device and a corresponding method. According to an exemplary embodiment, the measuring device comprises the following: a measuring circuit connected to one or more sensors; an RF frontend for near field communication (NFC) with an external device; a controller circuit coupled to the RF frontend and the measuring circuit and operative to receive measured values supplied from the measuring circuit, and wherein the controller circuit is further operative to check whether active communication with the external device occurs during a measurement and to store or discard one or more measured values supplied from the measuring circuit depending on this check. It is checked whether an NFC magnetic field is present during the measurement. Further configurations include a system comprising a measuring device and an NFC-enabled device.

Measuring system with interface for near field communication

According to various embodiments, an electronic cigarette may be provided including a heater configured to vaporize a liquid; a mouth piece to deliver the vaporized liquid to a user of the electronic cigarette; a processor configured to control the heater to vaporize the liquid; a wireless communication circuit configured to communicate with an external communication device; and a verification circuit configured to start the operation of the electronic cigarette upon receipt of a signal transmitted by the external communication device via the wireless communication circuit.

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Graz, Austria

Johannes Schweighofer