Nxp B.v.

Technische Universitat Graz

Forschungsholding Tu Graz Gmbh

Michael Stark

Erich Merlin

Srivathsa Masthi Parthasarathi

Thomas Noisternig

Stefan Mendel

Jingfeng Ding

Ulrich Neffe

Johannes Bruckbauer

Hubert Watzinger

Gernot Kubin

Christian Eisendle

Franz Pernkopf

Pablo Corbalán Pelegrín

David Knabl

Marián Képesi

Oliver Kronschläger

Yuvaraj Pargunam

Michael Wohlmayr

Andreas Merl

An ultra-wideband (UWB) system of a UWB-enabled device dynamically schedules UWB ranging sessions with multiple asynchronous access control devices. The UWB system creates one ranging session for each access control device and schedules each ranging session with equal priority. During each ranging session, the UWB system receives a ranging message from a corresponding access control device, with the ranging message including a ranging management list (RML) that includes identifiers associated with UWB systems that are within an access control range of the corresponding access control device. The UWB system updates the priority of each ranging session based on presence or absence of the corresponding identifier in the RML of the received ranging message. Further, the UWB system schedules the ranging sessions with the updated priority to dynamically prioritize one access control device, thereby enabling an operation between the UWB system and the corresponding access control device.

System and method for dynamic management of ultra-wideband ranging sessions

A method is provided for managing ultra-wideband (UWB) sessions. In the method a first UWB communication session is performed. A process of the first UWB communication session is synchronized with a time base of a first UWB communication device. At least another UWB communication session is performed. A process of the at least another UWB communication session is synchronized to the first UWB communication session.

Method for managing UWB communication sessions

Embodiments of an antenna system and a method for operating an antenna are disclosed. In an embodiment, an antenna system includes a first ferrite element, a second ferrite element, a first coil wrapped around the first ferrite element, a second coil wrapped around the second ferrite element, a first antenna interface electrically coupled to the first coil, a second antenna interface electrically coupled to the second coil, and a conductor network connected between the first coil, the second coil, the first antenna interface, and the second antenna interface.

Antenna system and method for operating an antenna

A method for operating an RFID device is disclosed. In the embodiment, the method involves establishing a radio-frequency link, receiving signal samples of the radio-frequency link, determining the offset of an initial phase of the link by filtering noise from the signal samples, windowing the filtered signal samples, and calculating an offset value from phase differences between the windows of signal samples, and modifying a configuration profile based on the offset value. During data transmission the configuration profile can be used to configure the transmitter in order to maintain the constant phase during transmission.

Method and device for phase calibration with active load modulation

Transients caused by load modulation can fee compensated far by adjusting pulse shapes. A radio frequency (RP) carrier signal can be modulated using load modulation. For the modulated RF carrier signal a particular pattern can be detected for a symbol period that precedes a second symbol that does not use load modulation. In response to the detecting, a pulse shape of the first symbol can be adjusted to mitigate the transients.

Pulse shaping for radio frequency transmitters

A sensor system is located in an environment composed of a first medium, where waves propagate with a first phase velocity, the sensor system including at least one main enclosure and a sensor array with at least two sensors, said sensor array being arranged inside the main enclosure, wherein the space inside the main enclosure between the sensor array and the inner surface of the main enclosure is filled with a second medium, in which waves propagate with a second phase velocity, the second phase velocity being different from the first velocity.

Housing for microphone arrays and multi-sensor devices for their size optimization

Growing community of inventors

Graz, Austria

Michael Stark