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:
Nov. 18, 2014
Filed:
Aug. 14, 2012
Ji Hoon Bae, Daejeon-si, KR;
Chan Won Park, Daejeon-si, KR;
Hyung Chul Park, Seoul, KR;
Jong Suk Chae, Daejeon-si, KR;
Cheol Sig Pyo, Daejeon-si, KR;
Ji Hoon Bae, Daejeon-si, KR;
Chan Won Park, Daejeon-si, KR;
Hyung Chul Park, Seoul, KR;
Jong Suk Chae, Daejeon-si, KR;
Cheol Sig Pyo, Daejeon-si, KR;
Abstract
An RFID system using an M pulse amplitude modulation (M-PAM) or M quadrature amplitude modulation (M-QAM) scheme using a plurality of load-modulators, a plurality of antennas, and a communication method thereof are provided. The RFID system includes: an RFID tag; and a reader device communicating with the RFID device, wherein the RFID tag includes: N load-modulators an N antennas communicating with the reader device in any one scheme of M-pulse amplitude modulation (M-PAM) and M-quadrature amplitude modulation (M-QAM) in which modulation of an M level is performed and operated corresponding to the M level.