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Researchers at UCD

Justin King

Lecturer

School Of Electric, Electron & Comms Eng
Engineering Building
Belfield
Dublin 4

Tel: +353 1 7161801
Email: justin.king@ucd.ie

Biography

Justin King obtained the BE degree in Electronic Engineering from University College Dublin (UCD) in 2006. In 2012 he was awarded the PhD degree from UCD for his doctoral thesis on Nonlinear electrothermal equivalent circuit modelling of AlGaN/GaN devices with applications to power amplifier design. Dr King then commenced a postdoctoral research fellowship in the UCD RF and Microwave Research Group and continued to work on device modelling, with emphasis now on behavioural modelling techniques. During this time he also acted as a part-time lecturer for the School of Electrical, Electronic and Communications Engineering.

In 2014 Dr King became a lecturer in the School of Electrical, Electronic and Communications Engineering in conjunction with the Beijing-Dublin International College. He spends one semester each year lecturing in Beijing University of Technology (BJUT), delivering modules for the new Internet-of-Things Engineering degree programme.

Publications

     

Peer Reviewed Journals

Jialin Cai and King, J. B. and Brazil, T. J. (2013) 'An Improved Quadratic Poly-Harmonic Distortion Behavioral Model'. International Journal of Microwave and Wireless Technologies, . [Details]
Jialin Cai and King, J. B. and Merrick, B. M. and Brazil, T. J. (2013) 'Padé Approximation Based Behavioral Modeling'. IEEE Transactions on Microwave Theory and Techniques, 61 (12):4418-4427. [Details]
King, J. B. and Brazil, T. J. (2013) 'Nonlinear Electrothermal GaN HEMT Model Applied to High-Efficiency Power Amplifier Design'. IEEE Transactions on Microwave Theory and Techniques, 61 (1):444-454. [Details]
 

Conference Publications

J. B. King, T. J. Brazil (2010) Nonlinear Modelling of GaN Device for Microwave Power Amplifiers 2010 Power Amplifier Symposium, Phoenix, Arizona, USA [Details]
J. B. King, T. J. Brazil (2010) Nonlinear Modelling of a GaN HEMT on Si Device 2010 Royal Irish Academy Colloquium on Emerging Trends In Wireless Communications, Dublin, Ireland [Details]
J. B. King and T. J. Brazil (2012) A GaN HEMT Equivalent Circuit Model with Novel Approach to Dispersion Modelling 2012 IEEE European Microwave Conference (EuMC), Amsterdam, Netherlands [Details]
J. B. King and T. J. Brazil (2012) A Comprehensive Electrothermal GaN HEMT Model Including Nonlinear Thermal Effects 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada [Details]
J. B. King and T. J. Brazil (2012) Equivalent Circuit GaN Model Accounting for Gate and Drain Lag Transient Effects 2012 Radio and Wireless Week, Santa Clara, CA, USA [Details]
B. M. Merrick and J. B. King and T. J. Brazil (2013) A simplified procedure for the design of continuous Class-F power amplifiers 2013 IEEE European Microwave Conference (EuMC), Nuremberg, Germany [Details]
B. M Merrick and J. B. King and T. J. Brazil (2014) A Novel Continuous Class-F Mode Power Amplifier 2014 Radio and Wireless Week, Newport Beach, CA, USA [Details]
                                                                                         

Research

Research Interests

My research interests are in the broad area of device modelling and simulation. They include nonlinear electrothermal device modelling with emphasis on modern high-power gallium nitride (GaN) and GaN-on-Silicon device technologies; modern behavioural device modelling; high-frequency nonlinear time- and frequency-domain circuit simulation algorithms; and power amplifier design using broadband impedance synthesis techniques.
 

Recent Postgraduates

Weite Xu (MEngSc) - Simulation of nonlinear circuits using automatic differentiation (2014)
 

Teaching

Teaching Philosophy

I try to teach by focusing on clearly explaining the fundamentals of the topic. I try to provide a number of methods of learning such as laboratory work, homework, office hours, tutorials and regular online homework.

Modules Coordinated

201400   EEEN2001J     Electronic & Electrical Eng: Intro to Circuits and Systems
201400   EEEN3006J     Electronic & Electrical Eng: Wireless Systems
201400   EEEN3001J     Electronic & Electrical Eng: Electronics for Sensors
201400   EEEN3003J     Electronic & Electrical Eng: Signals and Systems
201400   EEEN40540     Electronic & Electrical Eng: Modern Power Amplifiers
201400   EEEN3002J     Electronic & Electrical Eng: Microcontrollers