Stephen NASH
Cumberland,RI
Summary
Results-oriented Sr Principal Design Engineer with expertise in power amplifier design and RF circuit development. Committed to driving innovation and enhancing team performance through effective project management and thorough documentation practices.
Overview
40
40
years of professional experience
Work History
Sr Principal Design Engineer
Qorvo
Chelmsford , MA
08.2005 - Current
- Designed 2 and 5 GHz power amplifiers using GaAs HBT technology, enhancing performance of Wi-Fi products.
- Created laminates for front-end modules integrating HBT power amplifiers, SOI die, LNA, and switch designs, improving module efficiency.
- Coauthor of Patent #8666339, Radio Frequency Power Amplifier with Low Dynamic Error Vector Magnitude. March 2012
- Produced comprehensive documentation for product designs, including test plans and reports, ensuring clarity and compliance in engineering processes.
- Completed projects by adhering to timelines and budget constraints.
- Familiar with ADS design software, including FEM, HFSS, and Mercury Suite electromagnetic simulations.
- Worked with manufacturing test groups to set up correlation and characterization tests.
- Familiar with lab test benches for large-signal and small-signal network analyzers for part evaluations.
- Mentored junior staff to enhance skills and knowledge in project execution.
- I have had some exposure to Cadence design tools, along with some LNA and RF switch design.
Staff Design Engineer
RF Microdevices (RFMD)
Billerica , MA
01.2000 - 08.2005
- Designed innovative RF power amplifier circuits for next-generation communication devices.
- Executed rigorous testing and validation of RF components, ensuring reliability and performance standards.
- Analyzed customer requirements to design, develop, and test product prototypes.
- Facilitated design reviews to confirm alignment with project requirements and enhance design integrity.
- Resolved design issues encountered during prototyping and manufacturing, improving overall project outcomes.
- Utilized CAD software to simulate system performance under a variety of conditions.
- Participated in prototype testing to evaluate design functionality and identify necessary revisions.
Sr Scientist
Raytheon
Andover, MA
05.1996 - 01.2000
- Developed 40 to 45 GHz mm-wave RFIC designs for military applications.
- Pioneered Momentum Electromagnetic simulations in microwave design tools, enhancing accuracy in RFIC design processes.
- Developed pulsed IV measurement system for PHEMT large-signal transistor evaluations, improving characterization of device performance.
- Attended conferences and seminars to remain current with latest advances in science and technology, fostering ongoing professional development.
Sr Technician
Raytheon
Lexington, Massachusetts
09.1985 - 09.1995
- Developed one of the world's first pulse I-V systems for evaluating electron mobility traps within MESFETs and PHEMTs transistors.
- Collaborated with transistor modeling group to conduct routine testing of MESFET and PHEMT transistors, contributing to development of large signal models.
- Collected small signal data with HP8409 and HP8510 network analyzers, enhancing accuracy of testing efforts.
- Utilized IV curve tracer test equipment, facilitating effective evaluation of transistor performance.
Education
Master of Science - Electromagnetic And Microwave Engineering
University of Massachusetts, Amherst
Amherst, MA05-1996
Bachelor of Science - Electronic Engineering
Wentworth Institute of Technology
Boston, Massachusetts, MA08-1985
Skills
- Design validation
- Power amplifier design
- Electromagnetic simulations
- RF circuit design
- Test planning
- Project management
Timeline
Sr Principal Design Engineer
Qorvo
08.2005 - Current
Staff Design Engineer
RF Microdevices (RFMD)
01.2000 - 08.2005
Sr Scientist
Raytheon
05.1996 - 01.2000
Sr Technician
Raytheon
09.1985 - 09.1995
Master of Science - Electromagnetic And Microwave Engineering
University of Massachusetts, Amherst
Bachelor of Science - Electronic Engineering
Wentworth Institute of Technology