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US Patent 10469184 Radio frequency ranging using phase difference

Patent 10469184 was granted and assigned to Analog Devices on November, 2019 by the United States Patent and Trademark Office.

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Patent abstractTimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Applicant
Analog Devices
Analog Devices
Current Assignee
Analog Devices
Analog Devices
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
10469184
Date of Patent
November 5, 2019
Patent Application Number
15955049
Date Filed
April 17, 2018
Patent Citations Received
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US Patent 11863298 Method for identifying and diagnosing failures in pairwise time synchronization and frequency calibration in a mesh network
3
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US Patent 11503563 Distance estimation using signals of different frequencies
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US Patent 11513209 Radio frequency ranging using phase difference
‌
US Patent 11425536 Systems and methods for multicarrier phase-based localization
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US Patent 11445333 Systems and methods for multicarrier phasebased localization
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US Patent 11493619 Hybrid method for time-of-arrival-based ranging
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US Patent 10932220 Wireless node location identification
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US Patent 11696216 SSID broadcast management to support priority of broadcast
14
...
Patent Primary Examiner
‌
Dai Phuong
Patent abstract

Embodiments of the present disclosure describe mechanisms for radio frequency (RF) ranging between pairs of radio units based on radio signals exchanged between units. An exemplary radio system may include a first radio unit, configured to transmit a first radio signal, and a second radio unit configured to receive the first radio signal, adjust a reference clock signal of the second radio unit based on the first radio signal, and transmit a second radio signal generated based on the adjusted reference clock signal. Such a radio system may further include a processing unit for determining a distance between the first and second radio units based on a phase difference between the first radio signal as transmitted by the first radio unit and the second radio signal as received at the first radio unit. Disclosed mechanisms may enable accurate RF ranging using low-cost, low-power radio units.

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