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:
May. 06, 2025
Filed:
Nov. 23, 2021
Applicant:
Semtech Corporation, Camarillo, CA (US);
Inventors:
Olivier Bernard André Seller, Sainte-Soulle, FR;
Christophe Jean Jacques Devaucelle, Boudevilliers, CH;
Assignee:
SEMTECH CORPORATION, Camarillo, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 13/84 (2005.12);
U.S. Cl.
CPC ...
G01S 13/84 (2012.12);
Abstract
An extension of the LoRa modulation with an improved ranging mode. A master and a slave device exchange a request and a reply that contain sequences of chirps that are carefully aligned in time, frequency, and preferably also phase, such that the master device can ascertain the propagation delay to the slave by demodulating the reply. Request and reply include chirps having different slopes, preferably slopes of equal absolute value and opposite sign. The slope diversity permits an unbiased estimation of the Doppler shift.