Inventor · disambiguated record
Chang-Joo Kim
Also filed as: KIM CHANG-JOO
63 granted patents·32 pending applications·673 citations·filing 1995–2015
99Inventor score
Top patents by PatentIndex Score
95 records- 0195US8279132B2Multi-mode antenna and method of controlling mode of the antennaJUNG YOUNG-BAE·Filed 2008·Granted Oct 2, 2012·63 cites·17 claims
- 0294US7376424B2Method for seamless inter-frequency hard handover in radio communication systemKOREA ELECTRONICS TELECOMM·Filed 2001·Granted May 20, 2008·89 cites·26 claims
- 0392US8004369B2Arrangement structure of electromagnetic band-gap for suppressing noise and improving signal integrityKOREA ELECTRONICS TELECOMM·Filed 2009·Granted Aug 23, 2011·26 cites·8 claims
- 0491US7868837B2Ultra isolation antennaKOREA ELECTRONICS TELECOMM·Filed 2005·Granted Jan 11, 2011·30 cites·16 claims
- 0590US8279767B2Method of frequency channel assignment using effective spectrum sensing in multiple frequency assignment systemKANG BUB JOO·Filed 2006·Granted Oct 2, 2012·24 cites·11 claims
- 0689US7492322B2Multi-satellite access antenna systemKOREA ELECTRONICS TELECOMM·Filed 2005·Granted Feb 17, 2009·23 cites·8 claims
- 0788US8159412B2Isolation antenna for repeaterYUN JE-HOON·Filed 2005·Granted Apr 17, 2012·24 cites·20 claims
- 0887US9210712B2Apparatus and method for controlling subcarrier spacing in a wireless communication systemHWANG SUNG HYUN·Filed 2011·Granted Dec 8, 2015·9 cites·15 claims
- 0987US8120541B2Antenna system for tracking satelliteJUNG YOUNG-BAE·Filed 2006·Granted Feb 21, 2012·20 cites·6 claims
- 1086US8471774B2Apparatus and method for measuring antenna radiation patternsOH SOON-SOO·Filed 2008·Granted Jun 25, 2013·17 cites·11 claims
- 1186US7903691B2Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereofKOREA ELECTRONICS TELECOMM·Filed 2007·Granted Mar 8, 2011·9 cites·18 claims
- 1286US7893885B2Antenna system for tracking mobile satellite and carrier having the sameKOREA ELECTRONICS TELECOMM·Filed 2006·Granted Feb 22, 2011·18 cites·8 claims
- 1385US5851482ATin-bismuth based lead-free solder for copper and copper alloysKOREA MACHINERY & METAL INST·Filed 1996·Granted Dec 22, 1998·53 cites·3 claims
- 1484US8164506B2Electromagnetic absorber using resistive materialSIM DONG-UK·Filed 2009·Granted Apr 24, 2012·16 cites·5 claims
- 1580US7944404B2Circular polarized helical radiation element and its array antenna operable in TX/RX bandKOREA ELECTRONICS TELECOMM·Filed 2005·Granted May 17, 2011·12 cites·11 claims
- 1680US7400899B2Method for controlling power level based on packet error rate in wireless personal area network systemKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Jul 15, 2008·32 cites·10 claims
- 1774US7535821B2Method for generating two-dimensional orthogonal variable spreading code and MIMO system using the sameKOREA ELECTRONICS TELECOMM·Filed 2005·Granted May 19, 2009·6 cites·22 claims
- 1874US7099686B2Microstrip patch antenna having high gain and widebandKOREA ELECTRONICS TELECOMM·Filed 2003·Granted Aug 29, 2006·26 cites·9 claims
- 1973US7212162B2Horn antenna for circular polarization using planar radiatorKOREA ELECTRONICS TELECOMM·Filed 2004·Granted May 1, 2007·22 cites·12 claims
- 2073US7190944B2Method for performing handover based compressed mode and common frequency of neighbor cellsKOREA ELECTRONICS TELECOMM·Filed 2001·Granted Mar 13, 2007·17 cites·6 claims
- 2171US9867166B2Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereofELECTRONICS & TELECOMMUNICATIONS RES INST·Filed 2014·Granted Jan 9, 2018·1 cites·8 claims
- 2271US8326336B2Apparatus and method for communication in cognitive radio networkUM JUNG-SUN·Filed 2010·Granted Dec 4, 2012·3 cites·20 claims
- 2371US7006044B2Microstrip patch antenna using MEMS technologyKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Feb 28, 2006·21 cites·12 claims
- 2470US8964886B2Method and device for transmitting a preamble in a wireless communication systemUM JUNG SUN·Filed 2011·Granted Feb 24, 2015·3 cites·7 claims
- 2570US8386215B2Method and apparatus for radio propagation modeling using ray-tracing methodKOREA ELECTRONICS TELECOMM·Filed 2008·Granted Feb 26, 2013·4 cites·6 claims
- 2669US8861551B2Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereofHWANG SUNG-HYUN·Filed 2011·Granted Oct 14, 2014·1 cites·2 claims
- 2769US8477799B2Method for using flexible bandwidth in OFDMA-based cognitive radio system, base station and subscriber station using the sameHWANG SUNG HYUN·Filed 2006·Granted Jul 2, 2013·4 cites·39 claims
- 2869US8031667B2Method for managing multiple frequency assignment using terminal's received performance in OFDMA WRAN systemKOREA ELECTRONICS TELECOMM·Filed 2007·Granted Oct 4, 2011·4 cites·4 claims
- 2968US8855144B2Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereofHWANG SUNG-HYUN·Filed 2011·Granted Oct 7, 2014·1 cites·16 claims
- 3066US8995409B2Communication method using a preamble to share characteristic information, method for generating the preamble, and communication system to which the methods are appliedUM JUNG SUN·Filed 2011·Granted Mar 31, 2015·2 cites·16 claims
- 3166US7969371B2Small monopole antenna having loop element included feederKOREA ELECTRONICS TELECOMM·Filed 2006·Granted Jun 28, 2011·5 cites·24 claims
- 3265US8787271B2Method and device for communication between devices with different transmission coverageUM JUNG SUN·Filed 2010·Granted Jul 22, 2014·2 cites·13 claims
- 3365US6965345B2Method for designing multiband antenna using genetic algorithm device linked to full electromagnetic wave analyzing deviceKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Nov 15, 2005·16 cites·6 claims
- 3463US9332440B2Method of frequency channel assignment using effective spectrum sensing in multiple frequency assignment systemKANG BUB JOO·Filed 2012·Granted May 3, 2016·1 cites·4 claims
- 3562US9294327B2Method for identifying OFDM communication signal using OFDM symbol estimationKOREA ELECTRONICS TELECOMM·Filed 2013·Granted Mar 22, 2016·1 cites·10 claims
- 3662US8022713B2Method for measuring antenna characteristics out operational frequency range of chamberKOREA ELECTRONICS TELECOMM·Filed 2007·Granted Sep 20, 2011·3 cites·4 claims
- 3762US7502764B2Method for deciding array spacing of array antenna by using genetic algorithm and array antenna having sofa structure with irregular array spacingKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Mar 10, 2009·13 cites·8 claims
- 3861US8964640B2Hybrid beaconing methodKO GWANGZEEN·Filed 2009·Granted Feb 24, 2015·2 cites·12 claims
- 3960US8654011B2Shaped-beam antenna with multi-layered metallic disk array structure surrounded by dielectric ringEOM SOON-YOUNG·Filed 2008·Granted Feb 18, 2014·3 cites·17 claims
- 4060US7307587B2High-gain radiating element structure using multilayered metallic disk arrayKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Dec 11, 2007·12 cites·10 claims
- 4159US7990914B2Method for evaluating spectrum utilization efficiency in radio system sharing frequencyKOREA ELECTRONICS TELECOMM·Filed 2008·Granted Aug 2, 2011·1 cites·10 claims
- 4256US8886129B2Method and device for evaluating influence of electromagnetic waves of base station on human bodyKIM BYUNG CHAN·Filed 2011·Granted Nov 11, 2014·1 cites·10 claims
- 4356US8675594B2Method for sensing spectrum and arranging quiet period in cognitive radio system, customer premise equipment, base station and superframe structure using the sameKANG BUB-JOO·Filed 2007·Granted Mar 18, 2014·1 cites·5 claims
- 4456US8600140B2Image reconstruction apparatus and method for reconstructing image of microwave tomography thereofJEON SOON-IK·Filed 2011·Granted Dec 3, 2013·1 cites·18 claims
- 4556US7075495B2Offset hybrid antenna using focuserKOREA ELECTRONICS TELECOMM·Filed 2004·Granted Jul 11, 2006·9 cites·9 claims
- 4655US8619699B2Channel switching apparatus and method of a base station and channel switching apparatus and method of a terminal based on the cognitive radio systemKO GWANGZEEN·Filed 2008·Granted Dec 31, 2013·1 cites·24 claims
- 4754US8661143B2Reserving resources in centralized network by scanning superframes equal to or greater than maximum number of superframes allowed without listening to beacon periodLEE MOON-WON·Filed 2010·Granted Feb 25, 2014·1 cites·8 claims
- 4853US7768362B2Comb polarizer suitable for millimeter band applicationsKOREA ELECTRONICS TELECOMM·Filed 2007·Granted Aug 3, 2010·2 cites·14 claims
- 4952US2008215423A1Method for Exchanging Mileage for Game Money and Method and Apparatus for Game Service in an AirplaneKIM CHANG-JOO·Filed 2005·Application pending·0 cites
- 5051US9635561B2Method and system of distributed sensing for reducing spectrum sensing overhead in cognitive wireless multi-hop networksELECTRONICS & TELECOMMUNICATIONS RES INST·Filed 2014·Granted Apr 25, 2017·0 cites·20 claims
Showing the top 50 of 95 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →