公开(公告)号：US20230179258A1

公开(公告)日：2023-06-08

申请号：US18072322

申请日：2022-11-30

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Song Min KIM ,  Kang Min BAE ,  Nam Jo AHN

IPC: H04B5/00

CPC classification number: H04B5/0062

Abstract: Provided is a communication device. The communication device includes an interrogator configured to output an interrogation signal in which unit chirp signals that vary from a first frequency to a second frequency are continuous, and backscatter tags configured to receive the interrogation signal and each provide a tag signal formed by frequency modulation on the interrogation signal, wherein the interrogator receives the tag signals and demodulates the tag signals.

公开(公告)号：US20240142596A1

公开(公告)日：2024-05-02

申请号：US18501592

申请日：2023-11-03

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kang Min BAE ,  Hankyeol MOON ,  Song Min KIM

IPC: G01S13/34 ,  G01S13/32 ,  G01S13/75 ,  G01S13/82

CPC classification number: G01S13/34 ,  G01S13/325 ,  G01S13/758 ,  G01S13/825 ,  G01S2013/0263

Abstract: Provided are a tag, interrogator, and system for performing position measurement based on backscatter in a millimeter-wave band. In detail, provided is a tag including a planar Van Atta array antenna, a frequency-shift keying (FSK) modulator connected to the planar Van Atta array antenna, and at least one bias circuit connected to the FSK modulator, wherein the FSK modulator is configured to, based on an interrogation signal being received by the planar Van Atta array antenna, modulate the interrogation signal based on a control signal supplied through the at least one bias circuit, and output the modulated interrogation signal in a direction from which the interrogation signal is received, through the planar Van Atta array antenna.