career objective:               

Serve as an Antenna Subsystem Engineer for Phased Array and Reflectors and Microwave Component Engineer

summary of qualifications: 

§         Seasoned professional and expert with 20+ years of experience in design, analysis, test and integration of antennas including reflectors, active phased arrays, radome, microwave, and RF modules.

§         Experienced programmer and software tool user for design and analysis of antennas and components.

§         Extensive lab and antenna range experience for antenna testing and RF module measurement.

§         Significant project management skills in the integration and test of antenna subsystem and modules.

Technical accomplishments:

§         Phased Array design and development
- Designed phased array beam for 35 radiation beams and 4 special beams which made it possible to verify the customer requirements.
- Defined phased array requirements, integrated and tested the phased array.
- Received an Achievement Award for this accomplishment.
 

§          Designed, integrated, tested 24-beam active phased arrays with 1500 elements
- Reduced the testing time from one year to two months for the flight program, enabling the program to finish ahead of schedule
- Received two Achievement Awards for this effort.
 

§         Validated the performances of TT&C (Telemetry, Tracking, Command) by geometrical scaling modeling with mockups
- This action required substantial project management skills

§         Developed a cross-functional solution for thermal problems of microstrip circuits.

-   Saved $300,000 for the flight program

-   Received a Recognition Award from the management for this effort

§         Developed a calibration method and led testing of the array antenna system at High Bay with X-Y scanners.
- Led and managed a team of five.

§         Designed and shaped single and dual reflector antennas for the required beam coverage.
- Negotiated beam performances with customers.
 

§          Analyzed radome effects on the slot array
- Determined the error correction function
- The data was stored as a look up table in the missile, which contributed to a successful test.
- Received an Employee of the Month award for this accomplishment.
 

§         Designed, analyzed and tested monopulse tracking antenna systems
- The antenna system showed sidelobe improvement by 10 dB
- This improvement contributed to the successful tracking and remote sensing of the missile flight trajectory

§         Designed and analyzed multi-layered microstrip antennas by writing a state-of-art computer program.
- Enhanced antenna bandwidth by 300%

§         Designed and fabricated coaxial cables for impedance matching by changing the dielectric constant of the coax medium in steps.

work history:

Boeing Company, El Segundo, CA (1996 – Present): Antenna Subsystem Engineer, Integration and test of phased arrays, substantial project management of following satellites – WGS, TDRS, Spaceway, ICO, Thuraya, PanAmSat, ASTRA, AsiaSat

Boeing Company, Anaheim, CA (1989 – 1996): Antenna and Microwave Engineer,

Responsible antenna and microwave engineer as an expert in electromagnetics for PAC-3 program

Datron Systems, Simi Valley, CA (1985 – 1989): Antenna and Microwave Engineer,

Responsible engineer of ground reflector antenna systems

Education:

Ph.D., Electrical Engineering, 2007- 2010 (in progress)

University of Southern California (Advanced Electromagnetics, RF circuits, MEMS)

M.S., Electrical Engineering

University of Southern California (Reflector Antennas, Antennas, Microwave Network)

M.S., Electronics Engineering

California State University, Northridge (Thesis: Design and Analysis of Monopulse Antennas)

B.S., Physical Science, Seoul National University, Seoul, Korea

Certifications:

Certificate in Antenna measurement techniques (UCLA Extension)

Certificate in Digital Communications (Boeing)

Certificate in Satellite Link Analysis (UCLA Extension)

Certificate in Microwave measurement techniques (Boeing)

Certificate in Project Management (Boeing)

SKILLS:

Experienced FORTRAN programmer, operated commercial software tools such as SPICE, ADS, HFSS, GRE, Visual Basic, Excel, and Matlab.

Publications:

“Phased Array Pattern Analysis Method for Geosynchronous Satellites,” AMTA Proceedings, 2001

“Life Radiation and Life Thermal Tests of TDRS Multiple Access Microstrip Antennas,” AMTA Proceedings, 2000

“Evaluation of Scattering Level of TT&C Antennas with Geometrical Scale Modeling Technique,” AMTA Proceedings, 1999