Dr Heungjae Choi
(e/fe)

BSc, MSc, PhD, FHEA

: Ar gael fel goruchwyliwr ôl-raddedig

Timau a rolau for Heungjae Choi

Darlithydd mewn Peirianneg Amledd Uchel
Yr Ysgol Peirianneg

Rydw i

Darlithydd mewn Peirianneg Amledd Uchel ym Mhrifysgol Caerdydd gyda ffocws arbennig ar ymchwil ryngddisgyblaethol cyflymu microdon pŵer uchel. Mae fy ymchwil yn cwmpasu cylchedau integredig ac arwahanol microdon, cyseinyddion a mwyhaduron pŵer uchel yn yr ystod amledd o 1 Hz hyd at 120 GHz, gan gynnwys monitor glwcos gwaed parhaus noninvasive .
Dirprwy Arweinydd Grŵp Ymchwil y Ganolfan Peirianneg Amledd Uchel, gyda'r nod o wneud ein grŵp ymchwil yn weithle pleserus.
yn Gymrawd o'r Academi Addysg Uwch, sy'n golygu fy mod yn gallu ymgysylltu â dealltwriaeth eang o ddulliau effeithiol o ddysgu a chymorth addysgu fel cyfraniad allweddol at ddysgu myfyrwyr o ansawdd uchel.
yn herwr ac rwy'n dilyn rhagoriaeth, mae enghreifftiau'n cynnwys rownd derfynol mewn Peirianneg yng Ngwobrau SETforBRITAIN 2016, Gwobr Cyflawniad Eithriadol yng nghystadleuaeth dylunio Mwyhadur Pŵer Effeithlonrwydd Uchel Myfyrwyr yn IEEE International Microdon Symposium, neu Wobrau Arloesi ac Effaith Peirianneg Da Vinci.
Llysgennad STEM a chymryd rhan weithredol mewn digwyddiadau ymgysylltu â'r cyhoedd fel New Scientist Live, Museum After Dark, a Science Cafe i rannu fy ngwybodaeth a'm profiad gyda phobl.
Chwaraewr tîm ac rwy'n mwynhau gweithio gyda phobl eraill.

Ydw

Gwyddoniaeth ryngddisgyblaethol microdon, lle gall microdon gyflymu'r broses synhwyro a gwresogi dielectrig. Dyfais microdon Prifysgol Caerdydd i helpu diabetes.
RF / Microdon pŵer mwyhadur a dylunio applicators, ar gyfer cynhyrchu a chyflenwi pŵer microdon effeithlon, a mmWave ar-wafer nodweddu dyfais o GaN ar Si, GaN ar SiC, a GaN ar transistorau Diamond .
Modelu electromagnetig Amlffiseg COMSOL, o ddylunio cylched microdon, synhwyro dielectrig a phroblemau gwresogi.

Agored i'w drafod

Os ydych chi eisiau cael sgwrs, cysylltwch â mi trwy e-bost.

Date
Type

2025

Jones, J., Jones, N., Choi, H., Cripps, S. and Porch, A. 2025. A novel microwave applicator for large volume metal powder heating in additive manufacturing. Presented at: APMC 2024, Bali, Indonesia, 17-20 November 20242024 IEEE Asia-Pacific Microwave Conference (APMC). IEEE pp. 1302-1304., (10.1109/apmc60911.2024.10867661)
Silver, K., Choi, H., Cripps, S. C., Smith, R., Jones, M. O., Richards, E. and Porch, A. 2025. A novel miniaturized benchtop EPR spectrometer based on sideband detection using a software-defined radio. Presented at: APMC 2024, Bali, Indonesia, 17-20 November 20242024 IEEE Asia-Pacific Microwave Conference (APMC). IEEE pp. 814-816., (10.1109/apmc60911.2024.10867565)
Miles, A., Porch, A., Choi, H., Cripps, S., Brown, H. and Williams, C. F. 2025. Direct measurement of non-thermal microwave effects on bacterial growth and redox dynamics using a novel high-throughput waveguide applicator. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (10.1098/rsta.2020.0568)

2024

Silver, K., Bestow, S., Richardson, J., Nagara, C., Choi, H. and Li, J. 2024. Microwave resonator-based microfluidic sensors fabricated using 3D-printing technology. Presented at: Cardiff University Engineering Research Conference 2023, Cardiff, UK, 12-14 July 2023 Presented at Spezi, E. and Bray, M. eds.Proceedings of the Cardiff University Engineering Research Conference 2023. Cardiff: Cardiff University Press pp. 109-112., (10.18573/conf1.z)
Lingamgunta, S., Xiao, Y., Choi, H., Christie, G. and Fruk, L. 2024. Microwave-enhanced antibacterial activity of polydopamine–silver hybrid nanoparticles. RSC Advances 14, pp. 8331-8340. (10.1039/d3ra07543e)
Jones, D., Cripps, S., Choi, H., Perks, R., Porch, A. and Brown, P. 2024. Novel oscillator for use in near-field microwave microscopy. Presented at: Asia-Pacific Microwave Conference (APMC), 05-08 December 2023Proceedings 2023 Asia-Pacific Microwave Conference (APMC). IEEE pp. 829-831., (10.1109/APMC57107.2023.10439775)
Choi, H., Luzio, S. and Porch, A. 2024. Microwave non-invasive blood glucose monitor: Wireless implementation and challenges. Presented at: 54th European Microwave Conference (EuMC), Paris, France, 24-26 September 20242024 54th European Microwave Conference (EuMC). IEEE pp. 493-496., (10.23919/eumc61614.2024.10732840)

2020

Ahortor, E. K., Malyshev, D., Williams, C. F., Choi, H., Lees, J., Porch, A. and Baillie, L. 2020. The biological effect of 2.45 GHz microwaves on the viability and permeability of bacterial and yeast cells. Journal of Applied Physics 127(204902), pp. IMPORTED. (10.1063/1.5145009)
Folli, A. et al. 2020. A novel dual mode X-band EPR resonator for rapid in situ microwave heating. Journal of Magnetic Resonance 310, article number: 106644. (10.1016/j.jmr.2019.106644)

2019

Hamzah, H., Ahortor, E., Malyshev, D., Choi, H., Lees, J., Baillie, L. and Porch, A. 2019. A compact microwave applicator for the rapid detection of clostridium difficile. Presented at: 2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC), Nanjing, China, 6-8 May 20192019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC). IEEE, (10.1109/IMBIOC.2019.8777882)
Williams, C. F. et al. 2019. Bioluminescence of Vibrio fischeri: bacteria respond quickly and sensitively to pulsed microwave electric (but not magnetic) fields. Journal of Biomedical Optics 24(5), article number: 51412. (10.1117/1.JBO.24.5.051412)
Abduljabar, A. A., Choi, H. and Porch, A. 2019. Novel variable coupling technique for microwave liquid heating and sensing. Presented at: 18th Mediterranean Microwave Symposium (MMS) 2018, Istanbul, Turkey, 31 October - 2 November 201818th Mediterranean Microwave Symposium (MMS) 2018. IEEE pp. -., (10.1109/MMS.2018.8612033)

2018

Choi, H., Luzio, S., Beutler, J. and Porch, A. 2018. Microwave noninvasive blood glucose monitoring sensor: penetration depth and sensitivity analysis. Presented at: IEEE MTT-S International Microwave Biomedical Conference 2018, Philadelphia, PA, US, 14-15 Jun 2018IEEE International Microwave Biomedical Conference (IMBioC). IEEE pp. 52-54., (10.1109/IMBIOC.2018.8428850)

2017

Choi, H. 2017. Recent developments in minimally and truly non-invasive blood glucose monitoring techniques. Presented at: IEEE Sensors 2017, Glasgow, Scotland, 29 October - 1 November 20172017 IEEE Sensors Conference Proceedings. IEEE pp. 1-3., (10.1109/ICSENS.2017.8234291)
Choi, H., Luzio, S., Beutler, J. and Porch, A. 2017. Microwave noninvasive blood glucose monitoring sensor: human clinical trial results. Presented at: IEEE MTT-S International Microwave Symposium 2017, Honolulu, Hawaii, USA, 4 - 9 June 2017Microwave Symposium (IMS), 2017 IEEE MTT-S International. pp. 876-879., (10.1109/MWSYM.2017.8058721)
Abduljabar, A., Choi, H. and Porch, A. 2017. Dual feeding cavity resonator for efficiency enhancement in liquid heating applications. Electronics letters (10.1049/el.2017.2557)

2016

Choi, H., Luzio, S. and Porch, A. 2016. Dielectric properties of aqueous glucose solutions using microwave cavity and coaxial probe. Presented at: 2nd Australian Microwave Symposium, Adelaide, Australia, 11-12 February 20162016 IEEE 2nd Australian Microwave Symposium (AMS 2016). Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE) pp. 7-8., (10.1109/AUSMS.2016.7593467)

2015

Abduljabar, A., Choi, H., Barrow, D. and Porch, A. 2015. Adaptive coupling of resonators for efficient microwave heating of microfluidic systems. IEEE Transactions on Microwave Theory and Techniques 63(11), pp. 3681-3690. (10.1109/TMTT.2015.2478004)
Imtiaz, A., Lees, J., Choi, H. and Joshi, L. T. 2015. An integrated continuous class-F-1 mode power amplifier design approach for microwave enhanced portable diagnostic applications. IEEE Transactions on Microwave Theory and Techniques 63(10), pp. 3007-3015. (10.1109/TMTT.2015.2472417)
Choi, H., Naylon, J., Luzio, S., Buetler, J., Birchall, J., Martin, C. and Porch, A. 2015. Design and in vitro interference test of microwave noninvasive blood glucose monitoring sensor. IEEE Transactions on Microwave Theory and Techniques 63(10), pp. 3016-3025. (10.1109/TMTT.2015.2472019)
Imtiaz, A., Hartley, J., Choi, H. and Lees, J. 2015. A high power high efficiency integrated solid-state microwave heating structure for portable diagnostic healthcare applications. Presented at: IEEE MTT-S 2014 IEEE International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, London, 8-10 December 20142014 IEEE MTT-S international microwave workshop series on RF and wireless technologies for biomedical and healthcare applications (IMWS-Bio). IEEE pp. 1-3., (10.1109/IMWS-BIO.2014.7032437)
Choi, H., Jack, N., Luzio, S., Beutler, J. and Porch, A. 2015. Design of continuous non-invasive blood glucose monitoring sensor based on a microwave split ring resonator. Presented at: IEEE MTT-S 2014 IEEE International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, London, 8-10 December 20142014 IEEE MTT-S International Microwave Workshop series on RF and wireless technologies for biomedical and healthcare applications (IMWS-Bio). IEEE pp. 1-3., (10.1109/IMWS-BIO.2014.7032398)

2014

Cuenca, J., Choi, H., Hartley, J. and Porch, A. 2014. Microwave detection of photodielectric effects in antimony tin oxide. Presented at: 2014 International Symposium on Information Technology Convergence (ISITC 2014), Jeonju, Republic of Korea, 30-31 October 2014.
Choi, H., Cuenca, J., Hartley, J. and Porch, A. 2014. Observation of change in microwave properties during solid to liquid phase transformation of gallium. Presented at: 2014 International Symposium on Information Technology Convergence (ISITC 2014), Jeonju, Republic of Korea, 30-31 October 2014.
Hartley, J., Lees, J., Cuenca, J. and Choi, H. 2014. Assessment of machine oil quality by microwave cavity perturbation method. Presented at: 2014 International Symposium on Information Technology Convergence (ISITC 2014), Jeonju, Republic of Korea, 30-31 October 2014.
Choi, H., Cuenca, J. A., Attard, G. and Porch, A. 2014. A novel concentration detection method of hydrogen peroxide using microwave cavity perturbation technique. Presented at: 44th European Microwave Conference (EuMC) 2014, Rome, Italy, 6-9 October 201444th European Microwave Conference (EuMC 2014). Picastaway, NJ: IEEE pp. 632-635., (10.1109/EuMC.2014.6986513)
Yang, F., Lees, J., Choi, H., Yu, H. and Tasker, P. J. 2014. Continuous class BJ power amplifier with DGS output matching. Presented at: 83rd ARFTG Microwave Measurement Conference 2014, Tampa, USA, 6 June 2014Microwave Symposium (IMS), 2014 IEEE MTT-S International. IEEE pp. 1-4., (10.1109/MWSYM.2014.6848562)

2013

Yusoff, Z., Lees, J., Chaudhary, M. A., Carrubba, V., Choi, H., Tasker, P. J. and Cripps, S. C. 2013. Simple and low-cost tracking generator design in envelope tracking radio frequency power amplifier system for WCDMA applications. IET Microwaves, Antennas & Propagation 7(10), pp. 802-808. (10.1049/iet-map.2013.0091)

2012

Bensmida, S. et al. 2012. Nonlinear envelope tracking for efficiency optimization of power amplifiers. Presented at: 7th European Microwave Integrated Circuits Conference (EuMIC) 2012, Amsterdam, The Netherlands, 29-30 October 20127th European Microwave Integrated Circuits Conference (EuMIC), 2012. Picastaway, NJ: IEEE pp. 480-483.
McGenn, W., Choi, H., Lees, J., Uren, M. J., Benedikt, J. and Tasker, P. J. 2012. Development of a RF waveform stress test procedure for GaN HFETs subjected to infinite VSWR sweeps. Presented at: 2012 IEEE MTT-S International Microwave Symposium Digest, Montreal, Canada, 17-22 June 2012Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International. IEEE pp. 1-3., (10.1109/MWSYM.2012.6259725)
Chaudhary, G., Choi, H., Jeong, Y., Lim, J. and Kim, C. D. 2012. Design of group delay time controller based on a reflective parallel resonator. Etri Journal 34(2), pp. 210-215.
Akmal, M. et al. 2012. Characterization of electrical memory effects for complex multi-tone excitations using broadband active baseband load-pull. Presented at: 7th European Microwave Integrated Circuits Conference, Amsterdam, The Netherlands, 29-30 October 20127th European Microwave Integrated Circuits Conference (EuMIC), 2012. Picastaway, NJ: IEEE pp. 885-888.

2011

Chaudhary, G., Choi, H., Jeong, Y., Lim, J., Kim, D. and Kim, J. 2011. Design of dual-band bandpass filter using DGS with controllable second passband. IEEE Microwave and Wireless Components Letters 21(11), pp. 589-591. (10.1109/LMWC.2011.2167140)
Choi, H., Chaudhary, G., Moon, T., Jeong, Y., Lim, J. and Kim, C. D. 2011. A design of composite negative group delay circuit with lower signal attenuation for performance improvement of power amplifier linearization techniques. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 20112011 IEEE MTT-S International Microwave Symposium Digest (MTT). Picastaway, NJ: IEEE pp. 1-4., (10.1109/MWSYM.2011.5972599)
Choi, H., Jeong, Y., Lim, J., Eom, S. and Jung, Y. 2011. A novel design for a dual-band negative group delay circuit. IEEE Microwave and Wireless Components Letters 21(1), pp. 19-21. (10.1109/LMWC.2010.2089675)

2010

Choi, H., Jeong, Y., Kim, C. D. and Kenney, J. S. 2010. Bandwidth enhancement of an analog feedback amplifier by employing a negative group delay circuit. Progress In Electromagnetics Research 105, pp. 253-272. (10.2528/PIER10041808)
Choi, H., Jeong, Y., Kim, C. D. and Kenney, J. S. 2010. Efficiency enhancement of feedforward amplifiers by employing a negative group-delay circuit. IEEE Transactions on Microwave Theory and Techniques 58(5), pp. 1116-1125. (10.1109/TMTT.2010.2045576)
Jeong, Y., Choi, H. and Kim, C. D. 2010. Experimental verification for time advancement of negative group delay in RF electronic circuits. Electronics letters 46(4), pp. 306-307. (10.1049/el.2010.3147)

2009

Choi, H., Song, K., Jeong, Y., Kenney, J. S. and Kim, C. D. 2009. Propagation delay matched CMOS 0.18 μm frequency doubler for L-band application. Microwave and Optical Technology Letters 51(7), pp. 1729-1732. (10.1002/mop.24420)
Choi, H., Lim, J. and Jeong, Y. 2009. Harmonics terminated L-band frequency quadrupler using composite right/left-handed transmission line. Electronics letters 45(4), pp. 208-210. (10.1049/el:20093331)
Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. D. 2009. Dual-band feedforward linear power amplifier for digital cellular and IMT-2000 base-station. Microwave and Optical Technology Letters 51(4), pp. 922-926. (10.1002/mop.24198)

2008

Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. 2008. Cross cancellation technique employing an error amplifier [Letter]. IEEE Microwave and Wireless Components Letters 18(7), pp. 488-490.
Choi, H., Kenney, J. S., Jeong, Y. and Kim, C. 2008. Design of a microwave group delay time adjuster and its application to a feedforward power amplifier. Microwave Journal 51(2), pp. 88-100.
Song, K., Jeong, Y. and Choi, H. 2008. Varactor tunned high-Q aictive inductor with broadband tuning range. Presented at: International SoC Design Conference, Busan, South Korea, 24-25 November 20082008 International Soc Design Conference (Isocc). Picastaway, NJ: IEEE pp. III-42., (10.1109/SOCDC.2008.4815740)
Choi, H., Song, K., Kim, C. D. and Jeong, Y. 2008. Synthesis of negative group delay time circuit. Presented at: 2008 Asia- Pacific Microwave Conference, Macau, China, 16-20 December 20082008 Asia- Pacific Microwave Conference APMC 2008. Picastaway: IEEE pp. 1-4., (10.1109/APMC.2008.4958248)
Song, K., Choi, H., Kim, C. D., Kenney, J. S. and Jeong, Y. 2008. Delay matching compensated CMOS microwave frequency doubler. Presented at: 38th European Microwave Conference 2008, Amsterdam, The Netherlands, 27-31 October 200838th European Microwave Conference 2008. Picastaway: IEEE pp. 464-467., (10.1109/EUMC.2008.4751489)

2007

Park, S., Choi, H. and Jeong, Y. 2007. Microwave group delay time adjuster using parallel resonator. IEEE Microwave and Wireless Components Letters 17(2), pp. 109-111. (10.1109/LMWC.2006.890331)
Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. D. 2007. Cross post-distortion balanced power amplifier. Presented at: IEEE/MTT-S International Microwave Symposium 2007, Honolulu, USA, 3-8 June 2007IEEE/MTT-S International Microwave Symposium, 2007. Picastaway, NJ: IEEE pp. 1115-1118., (10.1109/MWSYM.2007.380289)
Jeong, S., Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. 2007. High efficiency distributed amplifier using optimum transmission line. Presented at: 2007 European Microwave Conference, Munich, 9-12 October 20072007 European Microwave Conference. Picastaway: IEEE pp. 1085-1088., (10.1109/EUMC.2007.4405386)
Seo, S., Ryu, N., Choi, H. and Jeong, Y. 2007. Novel high-Q inductor using active inductor structure and feedback parallel resonance circuit. Presented at: 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Honolulu, Hawaii, 467-4702007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium. Picastaway: IEEE pp. 467-470., (10.1109/RFIC.2007.380925)
Choi, H., Jeong, Y. and Kenney, J. S. 2007. Dual-band feedforward linear power amplifier using equal group delay signal canceller. Presented at: 2007 Asia Pacific Microwave Conference, Bangkok, Thailand, 11-14 Dec 20072007 Asia Pacific Microwave Conference. Picastaway, NJ: IEEE pp. 1-4., (10.1109/APMC.2007.4555143)
Jeong, S., Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. 2007. High efficiency distributed amplifier using optimum transmission line. Presented at: European Microwave Integrated Circuits Conference (EUMIC), Munich, Germany, 8-10 October 20072007 European Microwave Integrated Circuits Conference. Picastaway, NJ: IEEE pp. 287-290., (10.1109/EMICC.2007.4412705)
Jeong, S., Choi, H., Jeong, Y., Kenney, J. S. and Kim, C. 2007. High efficiency distributed amplifier using optimum transmission line. Presented at: European Conference on Wireless Technologies (ECWT), Munich, Germany, 8-10 October 20072007 European Conference on Wireless Technologies. Picastaway, NJ: IEEE pp. 367-370., (10.1109/ECWT.2007.4404023)

2006

Choi, H., Lim, J., Jeong, Y. and Kim, C. 2006. Doherty amplifier using load modulation and phase compensation DGS microstrip line. Presented at: 36th European Microwave Conference 2006, Manchester, England, 10-15 September 20062006 European Microwave Conference. Picastaway: IEEE pp. 352-355., (10.1109/EUMC.2006.281346)
Lee, J., Park, S., Choi, H., jeong, Y. and Yun, J. 2006. A design of co-channel feedback interference cancellation system using analog control. Presented at: 36th European Microwave Conference, Manchester, England, 10-15 September 20062006 European Microwave Conference. Picastaway, NJ: IEEE pp. 153-156., (10.1109/EUMC.2006.281241)
Park, S., Ryu, N., Choi, H., Jeong, Y. and Kim, C. 2006. A novel design of frequency multiplier using feedforward technique and defected ground structure. Presented at: 36th European Microwave Conference 2006, Manchester, England, 10-15 September 20062006 European Microwave Conference. Picastaway, NJ: IEEE pp. 224-227., (10.1109/EUMC.2006.281277)
Choi, H., Lim, J. and Jeong, Y. 2006. A new design of Doherty amplifiers using defected ground structure. IEEE Microwave and Wireless Component Letters 16(12), pp. 687-689. (10.1109/LMWC.2006.885636)

2005

Choi, H., Jeong, H., Kim, Y., Lim, J., Kim, C. and Jeong, Y. 2005. Dual-band predistortion power amplifier for digital cellular and IMT-2000 base-station application. Presented at: Asia-Pacific Microwave Conference 2005 (APCM 2005), Suzhou, China, 4-7 December 2005 Presented at Hong, W., Cui, T. J. and Fang, D. G. eds.Microwave Conference Proceedings, 2005, APMC 2005, Asia-Pacific Conference Proceedings, Vol. 1. Picastaway: IEEE pp. 1., (10.1109/APMC.2005.1606225)

Nod ymchwil

Nod fy ymchwil yw gwella ansawdd bywyd pobl, felly rwy'n canolbwyntio'n bennaf ar gyfieithu technoleg labordy yn gymhwysiad yn y byd go iawn, trwy brawf dichonoldeb, graddio a masnacheiddio.

Achos dangos: Monitor glwcos gwaed anfewnwthiol microdon

Cyllid

Teitl	Pobl	Cyllidwr	Gwerth	Hyd
UKRI Cross Research Council Responsive Mode Rownd 1,	L Baillie (PI), A Porch (Co-I), H Choi (Co-I), J Lees (Co-I), NJ Copner (Co-I), A Gibson (Co-I), G Hewinson (Co-I)	UKRI (EPSRC + MRC)	£1,201, 669	02/2025 - 01/2027
Mwyhadur pŵer effeithlonrwydd uchel	H Choi (PI), R Quaglia (Cyd-I)	RFHIC	£40,000	03/2023 - 06/2023
Partneriaeth Trosglwyddo Gwybodaeth	A Porch (PI), H Choi (Co-I)	Innovate UK	£284,000	04/2023 - 03/2025
Monitor glwcos gwaed anfewnwthiol	H Choi (PI), A Porch (Co-I)	GlucoRX	£15,000	05/2022 - 07/2022
Monitor glwcos gwaed anfewnwthiol	H Choi (PI), A Porch (Co-I)	GlucoRX	£15,000	02/2022 - 04/2022
Monitor glwcos gwaed anfewnwthiol	H Choi (PI), A Porch (Co-I)	GlucoRX	£36,000	11/2021 - 01/2022
Monitor glwcos gwaed anfewnwthiol	A Porch (PI), H Choi (Co-I)	GlucoRX	£234,700	07/2022
GW4-PATH	G Lasseter (PI), H Choi (Co-I) (ac eraill)	Cyllid Hadau GW4 Crucible 2019	£5,413	07/2019 - 04/2020
Cymrodoriaeth Ymchwil Sêr Cymru II	H Choi	Llywodraeth Cymru - ERDF	£191,666	05/2017 - 04/2020

Tiwtor Blwyddyn 3

Peirianneg Drydanol ac Electronig (EEE)

Arweinydd y modiwl

EN3024 Rheoli Prosiect Peirianneg (Blwyddyn 3)
Prosiect Unigol EN3400 (Blwyddyn 3)
Prosiect Prentisiaeth Gradd EN3420 (Blynyddoedd 4-5)

Cyfraniad

EN4110 Prosiect Grŵp Dylunio Mecatroneg (MEng)
EN2076 Fields, Tonnau a Llinellau Trawsyrru (Blwyddyn 2)
Goruchwyliaeth Prosiect Unigol (Blwyddyn 3)
Goruchwyliaeth Prosiect Unigol (MSc)

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 commercialization 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.

Anrhydeddau a dyfarniadau

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”

Aelodaethau proffesiynol

Pwyllgor Technegol Cymdeithas Theori a Thechnegau Microdon IEEE 28: Aelodau, 2024 - nawr
K-TAG (Grŵp Cynghori Technoleg Corea): Aelod, 2020-nawr
IEEE: Aelod (80444575), 2006 - nawr
EuMA (Cymdeithas Microdon Ewropeaidd): Aelod. 2018 - Now
KIEES (Sefydliad Peirianneg a Gwyddoniaeth Electromagnetig Corea): Aelod. 2004 - Now
KSEAUK (Cymdeithas Gwyddonwyr a Pheirianwyr Corea yn y DU): Aelod. 2019 - Now
ACS (Cymdeithas Gemegol America): Aelod (32593499), 2023-now

Pwyllgorau ac adolygu

adolygydd grant
- UKRI (UK Research and Innovation) Aelod o'r Coleg Adolygu Cyfoed Cymrodoriaeth Arweinwyr y Dyfodol (cyswllt)
- EPSRC (Cyngor Ymchwil Peirianneg a Gwyddorau Ffisegol) Aelod Cyswllt Coleg Adolygu Cyfoed

Golygydd cyfnodolion
- Golygydd gwadd, MDPI SENSORS, rhifyn arbennig ar "Synwyryddion Glwcos Gwaed Yn Seiliedig ar RF, Microdon a Thechnegau mmWave", 2020-2021 (https://www.mdpi.com/journal/sensors/special_issues/Blood_Glucose_Sensors)
- Bwrdd Pwnc Cyfnodolion, MDPI SENSORS (https://www.mdpi.com/journal/sensors/topic_editors)
- Cyd-Olygydd Gwâd, MDPI SENSORS, rhifyn arbennig ar "RF, Microdon a mm Tonnau Sensors a Chymwyswyr ar gyfer Ceisiadau Cemegol, Biolegol a Meddygol", 2018 (https://goo.gl/tbYFu2)
Sefydliad cynadleddau rhyngwladol
- Cynullydd Sesiwn, Cynhadledd Ewrop-Korea ar Wyddoniaeth a Thechnoleg 2022, Marseille, Ffrainc (https://ekc2022.org/)
- Cynullydd Sesiwn, Cynhadledd Ewrop-Corea ar Wyddoniaeth a Thechnoleg 2021, Caergrawnt, y DU (https://www.ekc2021.org/day2/programme/stdivision/5)
- Pwyllgor Rhaglen Gwyddoniaeth a Thechnoleg, Cynhadledd Ewrop-Korea ar Wyddoniaeth a Thechnoleg 2020, Munich, Yr Almaen (http://www.ekc2020.org, wedi'i chanslo oherwydd Covid-19)
- Cynullydd Sesiwn, Cynhadledd Ewrop-Korea ar Wyddoniaeth a Thechnoleg 2019, Fienna, Awstria (https://2019.europekoreaconference.org/page/programme/stdivision/6)
- Cyd-gadeiryddion Rhaglen Dechnegol, Symposiwm Rhyngwladol ar Gydgyfeirio Technoleg Gwybodaeth 2018 (http://www.kism.or.kr/ISITC2018/contents.php?pageId=0103)
adolygydd cyfnodolion
- Trafodion IEEE ar Theori a Thechnegau Microdon
- IEEE Microdon a Wireless Components Letters
- Trafodion IEEE ar Gylchedau a Systemau I: Papurau Rheolaidd
- Trafodion IEEE ar Gylchedau a Systemau II: Briffiau Express
- Trafodion IEEE ar gylchedau a systemau biofeddygol
- Trafodion IEEE ar Ddyfeisiadau Electron
- IEEE Journal of Electromagnetics, RF a Microdonnau mewn Meddygaeth a Bioleg
- Cylchgrawn IEEE Microdon
- Llythyrau Synwyryddion IEEE
- Llythyrau electroneg IET
- Cyfathrebu Natur
- Adroddiadau Gwyddonol Natur
- Cynnydd mewn Ymchwil Electromagneteg
- MDPI Synwyryddion
- MDPI Electroneg
- MDPI Gwyddorau Cymhwysol
- Catalyddion MDPI
- MDPI Diagnosteg
- MDPI Energies
- Biosynwyryddion MDPI
- Deunyddiau MDPI
Adolygydd y gynhadledd
- BioSynwyryddion IEEE 2023, 2024
- Synwyryddion IEEE 2019, 2020, 2021, 2022, 2023, 2024
- Wythnos Microdon Ewropeaidd IEEE 2021, 2022, 2024
- AMPERE 2023

Ardaloedd dan oruchwyliaeth

Rwyf ar gael i oruchwylio PhD, myfyrwyr MSc, myfyrwyr prosiect (israddedig ac ôl-raddedig), interniaid a myfyrwyr sy'n ymweld â'r pynciau canlynol:

Problemau synhwyro anfewnwthiol microdon
- Nodweddu a synhwyro dielctric microdon
- Cyseinyddion microdon a thechneg perchnogi ceudod
- Microdon synhwyrydd electroneg dylunio
Problemau gwresogi microdon
- Pweryddion cyseinydd ac anghydnaws
- Amplifiers pŵer pwrpasol
- Dyluniad amplifier-applicator pŵer oprimized
Problemau cylched microdon
- chwyddseinyddion pŵer uchel
- Amplifiers effeithlonrwydd uchel
- Llinol mwyhadur pŵer
- Microdon miniaturized electroneg
Problemau modelu aml-ffiseg
- Dyluniad atseinio
- modelu gwresogi parhaus a phwls microdon
Rwy'n agored i ddisgyblaethau eraill hefyd!

Goruchwylio presennol

Teitl	Myfyriwr	Gradd	Blwyddyn	Rôl
Dulliau RF mewn gweithgynhyrchu ychwanegion	Jake Jones	Phd	07/2022-06/2026	Cyd-oruchwyliwr (25%)
Datblygiad Catalydd Di-fetel gan ddefnyddio microdonnau	Sampurna Das	Phd	10/2022-09/2026	Cyd-oruchwyliwr (25%)

Goruchwyliaeth gyfredol

Contact Details

ChoiH1@caerdydd.ac.uk

Adeiladau'r Frenhines-Adeilad Canolog, Ystafell Ystafell E3.25, 5 The Parade, Ffordd Casnewydd, Caerdydd, CF24 3AA
Y Ganolfan Ymchwil Drosiadol, Llawr 1af, Ystafell 1.06, Heol Maindy, Cathays, Caerdydd, CF24 4HQ

Themâu ymchwil

Arbenigeddau

Peirianneg amlder radio
Electromagneteg peirianneg
Offeryniaeth biofeddygol
Technoleg synhwyraidd
Microdon

Bydd technoleg newydd sy'n hawdd ei defnyddio yn chwyldroi’r diagnosis cyflym o TB

11 September 2024

Dr Heungjae Choi (e/fe) BSc, MSc, PhD, FHEA

Timau a rolau for Heungjae Choi

Darlithydd mewn Peirianneg Amledd Uchel

Trosolwyg