Douglas H. Colvin
(New Hampshire or Massachusetts Only)

64 Burnt Hill Road Ph: 603-540-7823
Weare, NH 03281 dougmary@comcast.net



SUMMARY: An Electronics Systems Engineer with drive and motivation; a quick study and strong performer with in-depth knowledge in several disciplines. Excellent grasp of engineering fundamentals, and strong in written and communications skills. Skilled at project management. A team player.
RF & MICROWAVES: RADAR system development up to 20 GHz, design, and simulation, analysis, and design of microstrip, stripline, and patch antennas as well as microwave components and sub-assemblies; Electromagnetic field theory, Digital Signal Processing (DSP) algorithms for beam-forming and phased arrays; stochastic processing for target acquisition and detection; Constant False Alarm, linear systems and numerical techniques. Telecommunications, Analog to Digital (A/D) Converters, wideband digital receivers for EW and ESM systems, and UWB technology. HFSS, PMM, WIPL-D, Microwave Studio, Matlab, MathCad, MasterCam, and Autocad. Microwave Office for design of RF components and circuits. Designed wideband Instantaneous Frequency Measurement (IFM) systems and circuits.


SECURITY CLEARANCE
Current, secret

EXPERIENCE

Filtronic Signal Solutions – Hudson, NH April 2007 – Present
Contract Engineer -Filtronic designs and manufactures RF/microwave components and systems.
 Responsible for evaluating cost of design and manufacturing.
 Made suggestions and recommendations relative to manufacturing processes for up-coming larger production.
 Generated BOM (material and labor) for up-coming production runs.
 Design and evaluation of multi-band IFM (Instantaneous Frequency Measurement) modules.
 Designed extremely wideband stripline filters, ring mixers, and power dividers.
 Responsible for analog and digital IFM programs.
 Used Microwave Office, WPL-D, Microwave Studio, and AutoCad2006.
 Corresponded with engineers and manufacturing staff to resolve issues.
 Modeled suspended substrate stripline (SSS) for characteristic impedance and effective dielectric constant
for inputs into Microwave Office for further analyses.

SI2 Technologies, Inc. – Billerica, MA Aug 2004 – July 2006
Senior Engineer -SBIR specializing in Direct Write technologies.
 Principle Investigator on Phase I and Phase II SBIR efforts.
 Designed microstrip antennas and phased arrays for Navy and Army SBIR SATCOM projects using Microwave Studio, HFSS, and MATLAB for RF, antennas, microstrip, stripline, hybrids, and power dividers.
 Have written several proposals and internal memos to boost in-house capabilities and understanding in the areas of TDR, UWB, and fractal antenna design.
 Recommended software tools.
 Generated link budget, designed F/A-18 X-band SATCOM antenna system.
 Participated in the interviewing process for new hires.

March 2002 - August 2004: Unrelated Employment

Instrumentation Engineering, Merrimack, NH November 2000 – March 2002
Design Engineer -Turnkey test systems for fiber optic, telecom networks, microwave systems and systems integration
• Performed system design as the lead (project) engineer, optical analyses using MATLAB, BER testing, and drawn schematics. Provided ISO training and developed engineering process guidelines.
• MATLAB model design of a portable fiber optic continuity tester incorporated an operational amplifier for voltage scaling and programmable low voltage chips for controlling photodiodes and laser diodes; this resulted in a great cost savings to the company.



Transcept, Manchester, NH December 1999 – October 2000
Contract/Wireless Test Design Engineer - Transcept designs and manufactures repeaters for the wireless industry.
• Developed a novel 6 carrier automatic EVM/BER for TDMA/EDGE (wireless) testing through research, measurements, and simulation using MATLAB; this provided a 6-fold cost savings on measurement equipment.
• Used MATLAB to model various wireless protocols GMSK and EDGE for repeater systems.

JPSA Lasers, Hollis, NH July 1999 – November 1999
Contract/Design Engineer - Company specializes in the manufacture of eximer lasers.
• Using MATLAB designed and built op amp circuits for control and measurement of chamber pressure and eximer laser output power, and developed all documentation.
• Operational amplifier circuit design and integration into the embedded system I/O led to a speedy delivery of the system to the customer resulting in increasing sales volume.

Lockheed Martin (Sanders), Nashua, NH January 1992 – July 1999
Principle EW Systems Engineer - Military electronic warfare systems.
• F-22 EW compressive receiver model and CFAR (Constant False Alarm Rate) algorithm for log-amp output noise levels allowed the use of standard CFAR processes to be utilized for non-Gaussian noise statistics.
• Conceptualized, developed, simulated and analyzed wideband digital channelized receivers and had written several simulation and analysis codes in MATLAB; developed digital filters, IQ demodulation schemes, polyphase architectures, FFTs, true time delay beam forming, and phased arrays using MATLAB as a tool.
• Developed an all-digital IFF system for the F-16.
• Generated concept, theory, and design of a circular sonar sensor array along with the beam steer control utilizing amplitude monopulse tracking as the wavefront passed over the sonar array.
• Developed post-processing algorithms for improving A/D SFDR for RADAR and EW receiver front ends. Also addressed parameters such as sample rate, aliasing, SNR, dither, and other parameters to improve system performance.

General Electric, Utica, NY March 1985 - January 1992
Antenna & Phased Array Design Engineer/Electro-Optics Systems Engineer - Antenna/ radar and electro-optic systems for military applications.
• Originated the math and models, and authored GESCAT (General Electromagnetics SCATtering) computer code for stealth analysis of antennas and their platforms based on the Physical Theory of Diffraction.
• Led a team for the General Electric airborne radar cross-section (stealth technology) analysis and measurement program, supported GEMACS and other Method-of-Moments codes.
• Held position of Technical Director for the signal processing of the AN/SAR-8 shipboard Infrared Search and Track. Provided excellent customer relationship and solved major Infrared Search and Track problems for the Navy customer.
• Developed, wrote, and taught a Handbook on Infrared systems which is now in use at Martin-Marietta.

RADC (Rome Labs), Rome, NY July 1981 - March 1985
EMC/EMI R&D Engineer - Study of EMI and EMC effects due to transmitter and receiver frequency usage and antenna systems onboard aircraft.
• Analyzed and evaluated technical proposals.
• Determined the Rad-Haz level of several ground based HF (High Frequency) antennas using measurement and analyses techniques.
• Performed linear and non-linear transmission line modeling and studied coupling effects between antennas on board aircraft using analysis and method-of-moments.




EDUCATION HONORS & SOCIETIES

• Syracuse University, Syracuse, New York Eta Kappa Nu Honor Society
BSEE, 1981
Syracuse University, Syracuse, New York
MSEE, 1986

TRAINING

Telephone Lineman 1969-1977 U.S.A.F.
ISO9000/9001 2001 Instrumentation Engineering Merrimack, NH
Project Management 2001 Instrumentation Engineering Merrimack, NH

PUBLICATIONS

 “Lumped Circuit Transmission Line Model,” RADC TR-84-1`48, Feb. 1985
 “A CAD Tool for Analyzing Multilayered Media,” 1985 Symposium (Boston, MA) on Electromagnetic Compatibility Modeling.
 L.E.A.D. MATH (Copyright 1991): Software Package--Mathematical analysis with 2D and 3D graphics.
 Several company internal documents and presentations.


PRESENTATIONS
 Several IEEE presentations.


INTERESTS
 Family
 Applied Numerical Techniques
 Robotics
 New Technologies
 Home Improvement
 Music