公开(公告)号：US20230177291A1

公开(公告)日：2023-06-08

申请号：US18073149

申请日：2022-12-01

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Song Min KIM ,  Kangmin Bae ,  Namjo Ahn

IPC: G06K7/10

CPC classification number: G06K7/10366

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.