Invention Grant
- Patent Title: Electronic device and method for low power RF ranging
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Application No.: US15845290Application Date: 2017-12-18
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Publication No.: US10962632B2Publication Date: 2021-03-30
- Inventor: Marius Moe , Espen Wium , Tomas Motos , Hagen Clemens Graf
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Brian D. Graham; Charles A. Brill; Frank D. Cimino
- Main IPC: G01S11/08
- IPC: G01S11/08 ; G01S13/38 ; G01S13/82

Abstract:
Electronic devices and methods to provide wireless ranging are shown. A first electronic device includes a memory containing stored instructions that can perform a method for determining a distance between the first electronic device and a second electronic device. For each frequency in a selected set of frequencies, the method sets the transceiver to the respective frequency, sends a first tone having the frequency and a first phase to the second electronic device and receives a second tone having the first frequency and a second phase. For each selected frequency, the first electronic device determines the phase difference between the second tone and the controllable oscillator, receives a phase difference from the second electronic device, and calculates a phase delay for the frequency. The first electronic device calculates a phase delay difference for pairs of the frequencies; and determines the distance using these phase delay differences.
Public/Granted literature
- US20190187262A1 ELECTRONIC DEVICE AND METHOD FOR LOW POWER RF RANGING Public/Granted day:2019-06-20
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