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.

Date of Patent:
Jun. 23, 2026

Filed:

Dec. 01, 2022
Applicant:

Korea Advanced Institute of Science and Technology, Yuseong-gu, KR;

Inventors:

Song Min Kim, Daejeon, KR;

Kangmin Bae, Daejeon, KR;

Namjo Ahn, Daejeon, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 7/10 (2006.01); H04B 1/69 (2011.01); H04L 27/10 (2006.01);
U.S. Cl.
CPC ...
G06K 7/10366 (2013.01); G06K 7/10009 (2013.01); H04L 27/103 (2013.01); H04B 2001/6912 (2013.01);
Abstract

A communication device includes an interrogator configured to output interrogation signals including consecutive unit chirp signals that change from a first frequency to a second frequency, and a backscatter tag configured to receive the interrogation signals and frequency-modulate the interrogation signals to generate and provide tag signals, wherein the interrogator is further configured to receive the tag signals and demodulate the tag signals.


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