Nxp Usa, Inc.

Nxa Usa, Inc.

Karel Povalac

Lukas Vaculik

Petr Gargulak

Pavel Sadek

Pavel Krenek

An apparatus and method for determining location information using a multi-polarized antenna array is disclosed. The multi-polarized antenna array includes a plurality of metal patches and a multiplexer. Each metal patch has at least two feed-points. The multiplexer is coupled to an RF terminal and to each of the at least two feed-points of each of the plurality of metal patches. The antenna array is configurable to couple each feed-point one at a time to the RF terminal. Location information may be determined by a controller coupled to the RF terminal from RF signals received via each feed-point.

Multi-polarized antenna array

A signal adaptive filtering technique for recognizing touch and release events as indicated from a measured capacitance signal received from a capacitive touch sensor device in order to improve electromagnetic noise immunity, event detection responses, adaptability to dynamically changing environments, and adaptability to signal sensitivity changes and signal offset over an extended period of time. A capacitive touch sensor system may include one or more capacitive touch sensor devices, each sending a measured capacitance signal that outputs a baseline capacitance signal during a release event, and outputs an increased capacitance signal during a touch event. The system updates the baseline capacitance signal with a filter, wherein a transfer function of the filter varies as a function of a current state of the capacitive touch sensor device, determines a range of capacitance values calculated from the baseline capacitance signal in which a recognition of the touch event will not be performed, creates a predicted signal from a filtered version of the measured capacitance signal, and recognizes a touch or release event from a comparison of the measured capacitance signal to the predicted signal.

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Valasska Polanka, Czechia

Karel Povalac