Dr. Thomas Johnson

Associate Professor

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Biography

Thomas Johnson joined the School of Engineering at the University of British Columbia, Okanagan in July 2009. He was formerly a Technical Fellow at Pulsewave RF in Austin, Texas, where he collaborated on the research and development of RF switch-mode power amplifiers and nonlinear feedback linearization techniques for wireless infrastructure applications. He received his Ph.D. in 2007 from Simon Fraser University, where his research focused on the analysis of power efficiency in RF switch-mode amplifier architectures employing bandpass delta-sigma modulation. Dr. Johnson also received his MASc in 2001, contributing to the invention of wideband feedforward linearization techniques and DSP algorithms for calibrating and adjusting multitap RF equalizers. Prior to his graduate studies, he spent twelve years as a technical lead for companies such as ADC Telecommunications, MPR Teltech, and Norsat.

Research Interests

High Efficiency Radio Frequency Power Amplifier Systems RF Power Sources Wireless Medical Applications Industrial Applications RF Rectifiers Wireless Power Applied Electromagnetics Pulse Encoders Switch-Mode Power Amplifiers Signal Processing Efficiency Enhancement Linearization of RF Amplifiers Low Power RF Front Ends Remote Sensing

Courses

Microwave Engineering (ENGR 470) Radio Frequency Integrated Circuits (ENGR 471/571) Digital Signal Processing (ENGR 362) Linear Circuit Theory (ENGR 350) Electricity and Magnetism (APSC 178) Microelectronics (ENGR 451)

Requirements for University of British Columbia

Master Program
Requirements
GPA Requirement
Required:3.3
IELTS
Listening
Required:6.5
Reading
Required:6.5
Writing
Required:6.5
Speaking
Required:6.5
Overall
Required:7
TOEFL
Listening
Required:22
Reading
Required:22
Writing
Required:21
Speaking
Required:21
Total
Required:100
Prerequisites
Bachelor's degree in Philosophy or related field 3 credits in formal logic 6 credits at the upper level in history of philosophy 3 credits at the upper level in ethics or value theory 6 credits at the upper level in metaphysics, epistemology, or philosophy of science
Application Checklist
  • Online application form
  • Application fee
  • Transcripts from all post-secondary institutions
  • Three letters of recommendation
  • Writing sample (15-20 pages)
  • Statement of intent
  • Evidence of English language proficiency
Specialization Notes

Offers course-only and thesis routes. Focus areas include philosophy of science, mind, ethics, and Asian philosophy.