Inventor
CHOI WON-KYU
KR36 patents
⚠️ This page may combine multiple inventors who share the name “CHOI WON-KYU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOREA ELECTRONICS TELECOMM
20 patentsUS7427955B2Sep 23, 2008
Dual polarization antenna and RFID reader employing the same
KOREA ELECTRONICS TELECOMM31 citations92
US7006044B2Feb 28, 2006
Microstrip patch antenna using MEMS technology
KOREA ELECTRONICS TELECOMM21 citations92
US6946995B2Sep 20, 2005
Microstrip patch antenna and array antenna using superstrate
KOREA ELECTRONICS TELECOMM45 citations90
US7629929B2Dec 8, 2009
Antenna using proximity-coupled feed method, RFID tag having the same, and antenna impedance matching method thereof
KOREA ELECTRONICS TELECOMM9 citations84
US7545328B2Jun 9, 2009
Antenna using inductively coupled feeding method, RFID tag using the same and antenna impedance matching method thereof
KOREA ELECTRONICS TELECOMM17 citations84
US7504998B2Mar 17, 2009
PIFA and RFID tag using the same
KOREA ELECTRONICS TELECOMM13 citations84
US7414583B2Aug 19, 2008
PIFA, RFID tag using the same and antenna impedance adjusting method thereof
KOREA ELECTRONICS TELECOMM12 citations84
US8009118B2Aug 30, 2011
Open-ended two-strip meander line antenna, RFID tag using the antenna, and antenna impedance matching method thereof
KOREA ELECTRONICS TELECOMM2 citations63
US7940183B2May 10, 2011
Antenna for radio frequency identification tag
KOREA ELECTRONICS TELECOMM3 citations63
US7733273B2Jun 8, 2010
Radio frequency identification tag antenna for attaching to metal
KOREA ELECTRONICS TELECOMM3 citations63
US9256771B2Feb 9, 2016
System for simultaneously identifying massive RFID tags using HF band
KOREA ELECTRONICS TELECOMM2 citations62
US9098791B2Aug 4, 2015
Tag integrated circuit module apparatus and method of fabricating tag integrated circuit module apparatus
KOREA ELECTRONICS TELECOMM2 citations62
US9054904B2Jun 9, 2015
Receiving apparatus and method for RFID reader
KOREA ELECTRONICS TELECOMM3 citations62
US9033233B2May 19, 2015
Reader antenna and RFID electronic shelf including the same
KOREA ELECTRONICS TELECOMM2 citations62
US7933577B2Apr 26, 2011
Method and apparatus for sharing portable terminal in CDMA system and mobile RFID system
KOREA ELECTRONICS TELECOMM2 citations62
US7710274B2May 4, 2010
Antenna having loop and helical structure and RFID tag using the same
KOREA ELECTRONICS TELECOMM4 citations57
US7876269B2Jan 25, 2011
Radio frequency identification tag antenna using proximity coupling for attaching to metal
KOREA ELECTRONICS TELECOMM0 citations52
US7791543B2Sep 7, 2010
Antenna for radio frequency identification tag
KOREA ELECTRONICS TELECOMM1 citations52
US7978022B2Jul 12, 2011
Cable to waveguide transition apparatus having signal accumulation form of backshort and active phase shifting using the same
KOREA ELECTRONICS TELECOMM1 citations51
US7505008B2Mar 17, 2009
Electrical loop antenna with unidirectional and uniform current radiation source
KOREA ELECTRONICS TELECOMM0 citations48
ELECTRONICS & TELECOMMUNICATIONS RES INST
4 patentsUS9979072B2May 22, 2018
RFID reader antenna
ELECTRONICS & TELECOMMUNICATIONS RES INST4 citations73
US12327370B2Jun 10, 2025
Apparatus and method for monitoring inactive livestock
ELECTRONICS & TELECOMMUNICATIONS RES INST0 citations50
US11994935B2May 28, 2024
Apparatus and method for predicting remaining lifetime of environment data collection sensor in livestock house
ELECTRONICS & TELECOMMUNICATIONS RES INST0 citations50
US11477358B2Oct 18, 2022
System and method of monitoring in-pen livestock by using edge information about livestock
ELECTRONICS & TELECOMMUNICATIONS RES INST0 citations50