Kwang-Jin Koh

Assistant Professor

Research Interests:

  • Integrated circuits and systems for wireless communications and radar sensors
  • Highly efficient power amplifiers
  • Integrated filters for spectral purity
  • High-efficient on-chip power management circuits
  • Multiple-Input Multiple-Output (MIMO) and phased-array antenna systems

Recent Research Topics:

  • Power amplifiers for 5G mm-Wave applications
  • Energy efficient W-band phased arrays
  • RF-to-microwave tunable LC filters
  • Mixed-mode FIR filters for wideband wireless systems
  • High-speed supply modulators

Teaching Interests:

  • RF integrated circuits and systems: LNA, mixer, VCO, power amplifier and PLL designs
  • Analog integrated circuits and systems
  • Mixed-mode integrated circuits and systems
  • Low-noise electronics
  • Non-linear circuits and systems


  • PhD, Electrical Engineering University of California, San Diego
  • MS, Electrical Engineering KAIST, Daejeon, South Korea
  • BS, Electronic Engineering Chung-Ang University, Seoul, South Korea


  • Senior staff scientist, Broadcom Corp., 2010-2011
  • Senior engineer, Intel Corp., 2008-2010
  • Best student paper award (second place), IEEE International Microwave Symposium, 2015
  • Nominated for R.W King Award, IEEE Antenna and Propagation Society, 2015
  • Outstanding assistant professor award, Virginia Tech, 2014
  • Team of the year award (DARPA SMART program), Teledyne Scientific Company (formerly Rockwell Scientific Corp.), 2010
  • Best paper award, IEEE Solid-State Circuit Society / Electron Device Society, Seoul Chapter, 2002

Representative Publications:


Kwang-Jin Koh
  • (540) 231-7778
  • 302 Whittemore (0111)
    Dept. of Electrical and Computer Engineering, Virginia Tech
    Blacksburg, VA
  • Office: 613 Whittemore Hall
  • Fax: (540) 231-3362