Experience

SGS North American Inc

• United States
• Oil & Energy
• 100 - 200 Employee

• Senior Radio Frequency Engineer

  • Apr 2020 - Present

  5G FR2 mmWave RF OTA testing - FR2 RCAT VZW/ATT/TMO, CTIA, etc. - FR2 RCT/DVT GCF/PTCRB - 5G RF RCT/DVT(3GPP 38.521-3) - 5G Demod RCT/DVT(3GPP 38.521-4) - 5G RRM RCT/DVT(3GPP 38.533)  Responsible for 5G FR2 mmWave RF OTA testing(FR2 RCAT VZW/ATT/TMO, CTIA)/Lab Conformance testing(FR2 RCT/DVT GCF/PTCRB, etc)  All FR2 system equipment(Keysight) management and test scheduling  FR2 OTA test progress and debugging, FR2 OTA test support and test setup support for various OEMs Show less



Samsung Electronics

• South Korea
• Computers and Electronics Manufacturing
• 700 & Above Employee

• Staff hardware engineer(mobile antenna and RF design)

  • Aug 2008 - Apr 2020

  Staff Antenna Research & Development H/W Engineer, Designer Samsung Electronics Mobile R&D Office, Mobile Communications Business, Korea  Responsible for LTE, FR1(NR Sub6) and FR2(mmWave) Module(QTM052) antennas performance analyzing, developing and antenna system architecture designing of world first 5G(Galaxy S10 5G) and Galaxy Note 10+/S20 5G NA Models, etc.  EM Modeling Simulations : Extraction of Peak EIRP values, Creating & Comparing of CDF, Beamforming/Coverage Performance, Analysis & Optimization of mmWave modules location selection on Mobile Hand-held and effect with Legacy/Metal Antennas, Proposal of mechanical modifications for mmWave Beam Performance & Beam Coverage Optimization and Improvement  Responsible for mobile antenna designs and OTA performance testing (LTE Primary/Secondary, NR Sub-6, Connectivity and GPS antennas, etc.)  Responsible for researching, designing and development of Samsung Flagship Model RF and antenna systems (Qualcomm Adaptive Antenna Tuning solution – QAT3550/3555, RF Impedance Switching and Adaptive Aperture solution – QAT3516, Reconfigurable antenna system, etc.)  Analyze and optimize antenna designs and systems using EM simulation tools  Collect, and analyze data derived from measurements of antenna systems  Coordinate with designers and engineers for meeting customers' requirements  Optimize radio frequency systems through 3G/4G networks  Provide maintenance support on all RF Test equipment  Knowledge of 4G/5G NSA/SA Antenna & Systems * 4G/5G Mobile Communication, 5G & OTA Test, 5G NR Beamforming Operations (Spherical Coverage by beamforming, CDF, PDF, EIRP, EIS, etc.), Array Antenna Theory and Design Method, Propagation and Mobile Antenna Theory, RF Transmission Line, etc.  Experience of 5G NR Sub6/mmWave Modules performance measuring equipment Show less



EMW Antenna Co. Ltd., Korea

• Seoul, South Korea

• Antenna Design H/W Engineer (Internship)

  • Jan 2007 - Feb 2007

  Provided of simulation design and technical support for RFID reader/tag antennas, Designed and implemented RFID systems Provided of simulation design and technical support for RFID reader/tag antennas, Designed and implemented RFID systems



OMRON Korea Automotive Components Co. Ltd., Korea

• Seoul, South Korea

• RF H/W Engineer

  • Dec 2005 - Aug 2006

  Provided of design and performance tests of Automotive RF Systems (Vehicle Wireless Keyless System), Optimization and Implemented Wireless Electronic System of Vehicle Provided of design and performance tests of Automotive RF Systems (Vehicle Wireless Keyless System), Optimization and Implemented Wireless Electronic System of Vehicle



대한민국 육군

• 대한민국 경기도 김포

• 통신장교(Signal Officer, first lieutenant)

  • Mar 2003 - Jun 2005

  육군 통신장교 육군 통신장교