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Dr Heungjae Choi

Dr Heungjae Choi

Ser Cymru Research Fellow

School of Engineering

Email:
choih1@cardiff.ac.uk
Telephone:
+44(0)29 2087 0533
Location:
C3.11, Queen's Buildings - Central Building, 5 The Parade, Newport Road, Cardiff, CF24 3AA


Dr Heungjae Choi is currently a Sêr Cymru (Star of Wales) Research Fellow at the Centre for High Frequency Engineering, Cardiff University, Cardiff, Wales, United Kingdom.

My research interests include design of linear, high efficiency RF and microwave power amplifier, microwave non-invasive material characterisation and sensing, and its healthcare application.

Education and qualifications

  • 2011: PhD Linear RF/Microwave High Power Amplifier, Chonbuk National University, Jeonju, Republic of Korea
  • 2006: MSc Information and Communication Engineering, Chonbuk National University, Jeonju, Republic of Korea
  • 2004: BSc Electronics and Information Engineering, Chonbuk National University, Jeonju, Republic of Korea

Career overview

  • 2017-now: I am currently a Sêr Cymru (Star of Wales) Research Fellow at the Centre for High Frequency Engineering, Cardiff University, pursuing commercialisation of the microwave non-invasive blood glucose monitoring sensor.
  • 2013-2016: Recently I have been working on the development of non-invasive continuous blood glucose monitoring sensor, funded by Wellcome Trust. This includes development of microwave wireless wearable sensor device and a series of clinical trials.
  • 2011-2012: I have worked on the development of active harmonic load-pull system for modulated RF waveform using National Instruments’ PXI-based modular instruments by using LabVIEW. With the project funded by Engineering and Physical Sciences Research Council (EPSRC), he had two successful live demonstrations at the exhibition of National Instruments stand (Booth no. 317) in European Microwave Conference 2012 in Amsterdam, and Radio and Wireless Week 2013 in Austin, TX.

Honours and awards

  • 2018 International Symposium on Information Technology Convergence 2018: Best Paper Award, Jeonju, Republic of Korea
  • 2016 GE Healthcare Life Sciences - Sensors Challenge (sponsored by GE Healthcare Life Science): Phase 1 Winner with "Non-invasive Microwave Sensor for Cell Therapeutics"
  • 2016 SET for BRITAIN Awards 2016 (sponsored by the UK government): Finalist in Engineering category with “Bloodless, Painless, and Accurate Microwave Continuous Blood Glucose Monitoring Sensor”
  • 2010 16th Human Tech Thesis Prize Awards (sponsored by Samsung Electronics): Honor Prize with “Efficiency Enhancement of Feedforward Amplifiers by Employing a Negative Group Delay Circuit”
  • 2009 8th Electromagnetic Wave and Broadcasting Paper Contest (sponsored by the Korean Institute of Electromagnetic Engineering Science): Silver Prize with “Efficiency Enhancement of Feed-forward Amplifiers by Employing a Negative Group Delay Circuit”
  • 2008 Research achievement contest in 2008 Chonbuk IT-Open Fair (sponsored by Advanced Graduate Education Center of Chonbuk for Electronics and Information Technology-BK21): Creative Research Award with “Digital Controlled Co-channel Feedback Interference Cancellation System with Broadband Cancellation”
  • 2008 Student High-Efficiency Power Amplifier Design Competition (sponsored by IEEE MTT-S High Power Amplifier Components Committee): Outstanding Achievement Award with “class-AB power amplifier with 68% PAE at 2.14 GHz”
  • 2006 5th Electromagnetic Wave and Broadcasting Paper Contest (sponsored by the Korean Institute of Electromagnetic Engineering Science): Bronze Prize with “Dual-band Feedforward Linear Power Amplifier Using Equal Group Delay Signal Canceller”

Professional memberships

  • IEEE: Member, 2006 - now
  • EuMA (European Microwave Association): Member. 2018 - now
  • KIEES (Korean Institute of Electromagnetic Engineering and Science): Member. 2004 - now
  • KSEAUK (The Korean Scientists and Engineers Association in the UK): Member. 2019 - now

Speaking engagements

Media

Conferences

  • 2019: (podium) 17th International Conference on Microwave and High Frequency Heating: AMPERE, Valencia, Spain, September
  • 2019: (Session Convener and podium) Europe-Korea Conference on Science and Technology, Vienna, Austria, July
  • 2018: (Invited Workshop +2 talks) International Symposium on Information Technologies Convergence, Jeonju, Republic of Korea, October
  • 2018: (Invited Workshop) IEEE European Microwave Week 2018, Madrid, Spain, September
  • 2017: (Invited) Sensors Summit 2017, San Diego, CA, US, December
  • 2017: (Invited) IEEE SENSORS 2017, Glasgow, UK, November
  • 2017: (podium) IEEE MTT-S International Microwave Symposium, Honolulu, HI, US, June
  • 2016: (poster) 4th Helmholtz - Nature Medicine Diabetes Conference, Munich, Germany, September
  • 2016: (Invited Lecture) 8th Int'l Workshop on Novel Developments and Applications in Sensor and Actuator Technology, ISAT Coburg, Germany, September
  • 2016: (podium) IEEE 2nd Australian Microwave Symposium, Adelaide, Australia, February
  • 2014: (poster) IEEE International Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, London, UK, December
  • 2014: (Invited, +2 talks) International Symposium on Information Technology Convergence, Jeonju, Republic of Korea
  • 2014: (podium) IEEE MTT-S International Microwave Symposium, Tampa, FL, US
  • 2013: (live demonstration) Radio and Wireless Week, Austin, TX, US
  • 2012: (live demonstration) European Microwave Week, Amsterdam, Netherlands
  • 2011: (podium) IEEE MTT-S International Microwave Symposium, Baltimore, MD, US
  • 2010: (poster) Asia-Pacific Microwave Conference, Yokohama, Japan
  • 2010: (podium, poster) European Microwave Week, Paris, France
  • 2009: (podium, +1 talk) European Microwave Week, Rome, Italy
  • 2008: (podium) Asia-Pacific Microwave Conference, Hong Kong
  • 2008: (poster) European Microwave Week, Amsterdam, Netherlands
  • 2007: (podium) Asia-Pacific Microwave Conference, Bangkok, Thailand
  • 2007: (poster) IEEE MTT-S International Microwave Symposium, Honolulu, HI, US
  • 2006: (podium, +2 talks) European Microwave Week, Manchester, UK
  • 2005: (podium) Asia-Pacific Microwave Conference, Suzhou, China

Invited seminar and public engagement

  • 2018: (Invited) Korea Electrnoics Technology Institute, Bundang, Republic of Korea, October
  • 2018: (Invited) Chonbuk National University, Jeonju, Republic of Korea, October
  • 2018: (Invited) Science Cafe, Porter's Cardiff, Cardiff, UK, October
  • 2017: (live demonstration) New Scientist Live, Excel London, UK
  • 2016: (Invited) Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea, November
  • 2016: (Invited) Chonbuk National University, Jeonju, Republic of Korea, November
  • 2016: (live demonstration) National Eisteddfod, Abergavenny, Wales, UK
  • 2013: (Invited) Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea, September
  • 2013: (Invited) Chonbuk National University, Jeonju, Republic of Korea, September

Committees and reviewing

  • Grant reviewer
    • UKRI Future Leaders Fellowship Peer Review College (link)
  • Journal editor
  • Journal reviewer
    • IEEE Transactions on Microwave Theory and Techniques
    • IEEE Microwave and Wireless Components Letters 
    • IEEE Transactions on Circuits and Systems I: Regular Papers
    • IEEE Transactions on Circuits and Systems II: Express Briefs
    • IEEE Microwave Magazine
    • IEEE Sensors Letters
    • IET Electronics Letters
    • MDPI Sensors
    • Nature Scientific Reports
    • Progress in Electromagnetics Research

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

EN4818/ENT798 Non-Linear RF Design and Concepts

  • Non-linear RF behaviour
  • Power amplifier design
  • High efficiency, broadband operation modes

EN3082/ENT782 HF and RF Engineering

  • Waveguide and transmission line
  • Smith Chart, and impedance matching
  • Power amplifier design

EN3024 Engineering Project Management

  • Linked to Individual Project

EN3400 Individual Project

  • Microwave power amplifier design
  • Microwave material characterisation
  • Microwave interdisciplinary research

Contracts

Title People Sponsor Value Duration

Sêr Cymru Research Fellowship

"The holy grail of diabetes management: Bloodless, painless and accurate microwave continuous blood glucose monitor"

Dr Heungjae Choi

Prof Adrian Porch

Welsh Government (Welsh European Funding Office) and Cardiff University

£191,666 01 May 2017 - 30 April 2020

Supervised Students

Title Student Status Degree