Senior RF Engineer
Resume:
Contracting Profile
Robert S. Wedeen
Starpoint Technology, Inc.
Torrance, CA 90504
Phone: 310-***-****
E-mail: ***.******@*********-**********.***
SUMMARY OF APPLICATIONS:
+ Radar Systems – Airborne, Automotive, and Space Based
+ Direct Digital Synthesizers/ Chirp Generators
+ Arbitrary Waveform Generators
+ A/D Converters
+ Communication Systems - Satellites, Ground Systems
+ Antennas – Electrically and Mechanically Scanned, Microstrip, Loop
+ Active Microwave Components - Lumped, MIC, MMIC
+ Passive Microwave Components - RF to Millimeter Wave
+ Motor and Motion Control Systems
+ Power Supplies - DC to DC Converters, Inverters
SUMMARY OF ACTIVITIES:
+ Radar System Hardware Development and Integration
+ SAR Radar Integration into Airborne Platform/ Flight Test Participation
+ Microwave Engineering/ Circuit Design
+ RF Systems Design, Integration, Test, and Evaluation
+ Digital Receiver Test
+ Phase Noise Test
+ Circuit Design and Analysis - Analog and Digital
+ Test and Evaluation of A/D Converters
+ Noise Source Design and Development, and Test
+ Development and Test of Power Conversion Systems
+ Development and Test of Motion Sensors
CREDENTIALS:
+ B.S.E.E. - Cornell University, Ithaca, NY
+ M.S.E.E. - California State University, Northridge (Fellowship Program)
SECURITY INFORMATION:
+ Active Secret Clearance
SYSTEMS:
+ Airborne and Collision Avoidance Radar
+ Communication Satellite Repeaters
+ Ground Communication Systems
+ Electro-mechanical Propulsion Systems
ACTIVE MICROWAVE COMPONENTS:
+ Power Amplifiers and LNA’s
+ Upconverters and Downconverters
+ Oscillators and Filters
PASSIVE MICROWAVE COMPONENTS:
+ Microstrip Bandpass Filters
+ Microstrip Antennas
+ Microstrip Couplers
+ Microwave Component Test Fixtures
POWER SUPPLIES:
+ High Voltage Flyback Supplies
+ Regulated Buck Converters
+ Voltage Regulators, Current Regulators
+ VHF Power Supply Prototype (Power Conversion from 100 MHz RF)
MOTOR CONTROL and MOTION SENSORS:
+ 3-Phase Induction Motor Control (Variable Torque and Slip)
+ PWM Controller and Interface for DC Motor
+ Optical Motion Sensor
PATENTS:
Awarded Several Patents Which Include the Following Applications:
+ Millimeter Wave Power Amplifiers
(6,040,739)
+ Closed Loop/Positive Feedback, Solid State Amplifier with Optimal Gain (4,999,583)
+ DC Power Conversion at RF Conversion Frequencies
(5,184,288)
+ Torque Oscillation Stabilization of Induction Motors
(5,349,278; 5,350,989; 5,359,269; 5,442,268; 5,554,915)
SOFTWARE TOOLS:
+ ADS
+ PSPICE
CLIENTS, and PAST AFFILIATIONS
+ Raytheon Space and Airborne Systems, El Segundo, California
+ Hughes Aircraft Company, El Segundo, CA
+ TRW, Redondo Beach, California
+ Eaton/Yigtek Corp., Sunnyvale, CA
+ Varian Associates, Santa Clara CA
Resume
ROBERT S. WEDEEN
2054 Artesia Blvd. # B
Torrance, CA 90504
Phone: 310-***-****
PERSONAL: U.S. Citizen
SECURITY STATUS: SECRET CLEARANCE
EDUCATION: CORNELL UNIVERSITY, Ithaca, New York
B.S.E.E. (received in 1980)
HUGHES AIRCRAFT COMPANY MICROWAVE MASTER’S PROGRAM
CALIFORNIA STATE UNIVERSITY, NORTHRIDGE
OBJECTIVE: Provide technical support to clients for successful delivery of products to customers
WORK EXPERIENCE:
6/99 to Present : Starpoint Technology, Inc. Position: Engineer/CEO
Independent Contracting Consultant and CEO of Starpoint Technology
Performed work for an aerospace customer which involved:
Developed a Chirp Generator and integrated into a SAR radar system.
Designed and developed an Arbitrary Waveform Generator
Designed and developed an RF detector
Developed receiver protection circuitry for radar systems
Designed and developed RF diplexer to resolve phase offset issue in IQ detector
Performed phase noise tests of D/A converters, amplifiers, DDS’s and oscillators
Improved layout and design of a precision phase shifter to achieve low spurious RF levels
Performed analysis on the pulse response of bandpass filter networks
Developed a 94GHz power amplifier with bias protection circuitry, integrated into transmitter and performed airborne test.
Performed environmental testing of radar system modules
Improved receiver channel to channel isolation by applying EMI modifications
5/97 to 5/99: TRW
Developed an antenna for a remote keyless entry system.
Developed millimeter wave power amplifier modules.
Improved performance and repeatability of amplifier modules and filed invention disclosure for Waveguide to Microstrip Backshort with External Spring Compression.
Designed and implemented bias control circuitry for amplifiers and supported burn-in
Designed and simulated a predistortion linearizer for commercial wireless applications
8/82 to 5/97: HUGHES AIRCRAFT COMPANY
8/82 to 6/85: Microwave Design Engineer: Designed and developed Upconverters, Downconverters, Amplifiers and Microstrip Filters.
6/85 to 9/87: Satellite Subsystem Integration and Test Engineer: Integrated RF/Microwave modules into satellite repeaters and performed testing of the repeaters.
9/87 to 3/90: RF/Power Engineer: Developed state of the art power supplies with RF conversion frequencies. Tested switching power supplies. Performed and completed a failure analysis on a power supply used for a radar system on the Space Shuttle. Implemented design enhancements, based on findings, to increase the reliability of the power supply.
3/90 to 6/93: Electric Vehicle (EV) Engineer: Tested and provided design support for the EV inverter and control system. Gained extensive knowledge of the GM EV on the component, subsystem and vehicle levels. Worked closely with battery and motor manufacturers to transfer the required technology to GM and Hughes.
Performed system integration and supported EV testing worldwide. Corrected vehicle propulsion instabilities through experimentation , design and implementation on a short schedule. (This activity resulted in 5 inventions which are now U.S. Patents.)
6/93 to 7/94: Technical Leader/ Program manager for RF High Intensity Discharge (HID) project. Designed subminiature RF couplers and dynamic auto-impedance matching networks.
Developed a high efficiency RF rectifier circuit for power conversion.
Constructed VHF helical cavity resonators.
7/94 to 7/95: Participated in the design and development of an automotive collision avoidance radar system at 77 GHz. Implemented bias circuitry which improved the reliability of theGunn oscillator and reduced phase noise. Designed and implemented an optically based velocity/ position sensor which significantly improved the reliability and accuracy of the scanning antenna system.
Designed, assembled, tested and demonstrated an operational low cost motor controller to provide scanning for the antenna.
7/95 to 5/97: Designed a Direct Digital Synthesizer module (DDS) for an airborne radar application.
Participated in the development of a 94 GHz illuminator for a bi-static radar system.
8/81 to 8/82 EATON/YIGTEK, Sunnyvale, CA
Designed microwave oscillators and Gunn diode test fixtures. Supported production and testing of YIG oscillators.
7/80 to 8/81 Varian Associates, Santa Clara, CA
Designed and tested L-band and X-band amplifiers. Tuned and tested YIG oscillators.
PATENTS: U.S. Patent No. 4,999,583 (March 12, 1991) : Amplifier Drive Controller
U.S. Patent No. 5,184,288 (Feb. 2, 1993) : High Frequency Polyphase Rectifier
U.S. Patent No. 5,349,278 (Sept. 20, 1994) : Torque Oscillation Compensation Utilizing Velocity Feedback
U.S. Patent No. 5,350,989 (Sept. 27, 1994) : Torque Oscillation Compensation Utilizing Battery Current Sensing
U.S. Patent No. 5,359,269 (Oct. 25, 1994) : Torque Oscillation Compensation Utilizing Torque Transducer Feedback
U.S. Patent No. 5,442,268 (Aug. 15, 1995) : Torque Oscillation Compensation Using Torque Emulator/Observer Feedback
U.S. Patent No. 5,554,915 (Aug. 1996) : High Impedance AC coupling Method for Quick Command Response in Torque Compensation Systems
U.S. Patent No. 6,040,739 (March 21, 2000) : Waveguide to Microstrip Backshort with External Spring Compression
Patent pending on Phase Correction Scheme for Direct Digital Synthesizers in Radar Systems
All inventions were reduced to practice.
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