The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2022
Filed:
Aug. 28, 2020
Nxp Usa, Inc., Austin, TX (US);
Khurram Waheed, Austin, TX (US);
Jose Santiago Lopez Ramirez, Tlajomulco, MX;
Raja Venkatesh Tamma, Cedar Park, TX (US);
NXP USA, Inc., Austin, TX (US);
Abstract
A wireless ranging system () estimates a distance () between wireless devices () by calibrating the devices through exchanging calibration packets () to adjust transceiver settings for performing phase measurements at the wireless devices, and then transmitting a measurement packet () from a first wireless device to a second wireless device to synchronize the first and second wireless devices and to perform a two-way IQ data capture sequence at different carrier frequencies during processing of the measurement packet so that the first and second wireless devices each measure phase values for each of the plurality of different carrier frequencies, where the phase values at each of the first and second wireless devices are processed to generate a combined phase offset vector which is processed to determine a first estimated distance between the first and second wireless devices.