Assoc. Prof. Yan Zhao, Ph.D.

Education

PhD (Electronic Engineering) – Queen Mary University of London, UK           
MSc (Communication Engineering) – University of Birmingham, UK
BSc (Information Engineering) – Beijing University of Posts and Telecommunications (BUPT), China
                             

Academic Services and Membership:

• Chair of the IEEE Thailand Section Joint MTT/APS Chapter
• Managing Editor of Engineering Journal (http://engj.org/)
• Advisor of the SPIE Student Chapter in Chulalongkorn University
• Senior Member of the Institute of Electrical and Electronics Engineers (IEEE)
• Member of the Optical Society of America (OSA)
• Founding Member of the innovative Electromagnetic Academic of Thailand (iEMAT)

Research Interests:

Antennas, metamaterials, computational electromagnetics, finite-difference time-domain (FDTD) method, indoor localisation

Invited Talks:

• Directivity enhancement using hyperbolic metasurfaces
• Introduction to the finite-difference time-domain (FDTD) method
• Controlling the resonances of indefinite materials for maximizing efficiency in wireless power transfer
• Analysis of image magnification by hyperlens structures using a spatially dispersive FDTD method in cylindrical coordinates

Research Projects:

• Microwave applications of hyperbolic metasurfaces (The Thailand Research Fund), Jun. 2016 – May 2019
• Design of a wireless charging system for laptop computers (Chulalongkorn University), Nov. 2015 – Oct. 2016
• Design of compact metamaterial for enhancing antenna performance (Chulalongkorn University), Nov. 2014 – Oct. 2015
• Design of metamaterial-based RF energy harvesting system (Chulalongkorn University), Jul. 2014 – Jun. 2015
• A PC-to-PC data transfer system using optical wireless communication (Asahi Glass Foundation), Aug. 2013 – Feb. 2015
• Design of a compact MIMO antenna for LTE systems (Mobicrat), Dec. 2013 – Feb. 2014.
• Development of an indoor localisation system using optical wireless communication technology (Chulalongkorn University), Aug. 2013 – Aug. 2014
• Investigation and design of metamaterial enhanced wireless energy transfer and harvesting systems (The Thailand Research Fund), Jul. 2012 – Jul. 2014
• A campus geographic information system based on RFID technology (Faculty of Engineering, Chulalongkorn University), Dec. 2011 – Dec. 2012

Publications

Book Chapters

• Y. Zhao, “Modeling of optical metamaterials using the FDTD method”, Chapter 3 in Computational Nanotechnology Using Finite Difference Time Domain, CRC Press, 2014.
• C. Argyropoulos, Y. Zhao, E. Kallos and Y. Hao, “Finite-difference time-domain modelling of electromagnetic cloaks”, Chapter 7 in Metamaterials, Springer Science+Business Media, LLC, 2010.
• Y. Zhao, P. Belov, and Y. Hao, “Accurate FDTD modelling of a perfect lens,” Chapter 8, “Spatially dispersive FDTD modelling of wire medium,” Chapter 9 in FDTD Modelling of Metamaterials: Theory and Applications, Artech House, Incorporated Pub., 2008.
• Y. Hao, A. Alomainy, and Y. Zhao, “Antenna Design & Propagation Measurements and Modelling for UWB Wireless BAN,” Chapter 16 in Ultra Wideband: Antennas and Propagation for Communi¬cations, Radar and Imaging, Wiley & Sons, 2006.

Journal Articles

1. Y. Zhao, “Design of high-gain, wideband antenna using microwave hyperbolic metasurface,” AIP Advances, vol. 6, no. 5, p. 055022, 2016. 
2. M. Saadi, Y. Zhao, O. Naseer, and L. Wuttisittikulkij, “A beam scanning-based indoor localization system using light emitting diodes, "Engineering Journal, vol. 20, no. 3, pp. 197-206, 2016.
3. Y. Zhao, “A dual-wideband microstrip antenna for LTE indoor base stations,” Electronics Letters, vol. 52, no. 8, pp. 576-578, 2016.
4. M. Saadi, Y. Zhao, L. Wuttisttikulkij, and M. T. A. Khan, “A heuristic approach to indoor localization using light emitting diodes,” Journal of Theoretical and Applied Information Technology, vol. 84, no. 3, pp. 332-338, 2016.
5. E. Khansalee, K. Nuanyai, and Y. Zhao, “A dual-band rectifier for RF energy harvesting,” Engineering Journal, vol. 19, no. 5, pp. 189-197, 2015.
6. Y. Zhao, “Nondiffracting beam emission from hyperbolic metasurfaces,” Journal of Optics, vol. 17, no. 4, p. 045103, 2015.
7. N. Wittayasooporn, A. Panichevaluk, and Y. Zhao, “PicoGrid: A web-based distributed computing framework for heterogeneous networks using Java,” Engineering Journal, vol. 19, no. 1, pp. 153-165, 2015.
8. M, Saadi, A. Bajpai, Y. Zhao, P. Sangwongngam, and L. Wuttisittikulkij, “Design and implementation of secure and reliable communication using optical wireless communication,” Frequenz, vol. 48, pp. 501-509, 2014.
9. Y. Zhao, “Evanescent wave amplification and subwavelength imaging by ultrathin uniaxial μ-near-zero material,” AIP Advances, vol. 4, p. 027115, 2014.
10. Y. Zhao, and E. Leelarasmee, “Controlling the resonances of indefinite materials for maximizing efficiency in wireless power transfer,” Microwave and Optical Technology Letters, vol. 56, no. 4, pp. 867-875, 2014.
11. Y. Zhao, and J. Vongkulbhisal, “Design of visible light communication receiver for on-off keying modulation by adaptive minimum-voltage cancelation,” Engineering Journal, vol. 17, pp. 125-129, 2013.
12. M. Saadi, L. Wuttisittikulkij, Y. Zhao, and P. Sangwongngam, “Visible light communication: Opportunities, challenges and channel models,” International Journal of Electronics and Informatics, vol. 2, pp. 1-11, 2013.
13. J. Vongkulbhisal, and Y. Zhao, “R-LABS: An RFID-based indoor localisation system using antenna beam scanning,” Journal of Ambient Intelligence and Smart Environments, vol. 7, pp. 251-266, 2013.
14. J. Vongkulbhisal, B. Chantaramolee, Y. Zhao, and W. S. Mohammed, “A fingerprinting-based indoor localization system using intensity modulation of light emitting diodes,” Microwave and Optical Technology Letters, vol. 54, no. 5, pp. 1218-1227, 2012.
15. Y. Zhao, “Investigation of image magnification property of hyperlens formed by a tapered array of metallic wires using a spatially dispersive finite-difference time-domain method in cylindrical coordinates,” Journal of Optics, vol. 14, no. 3, pp. 035102, 2012.
16. Y. Zhao, and Y. Hao, “A subject specificity analysis of radio channels in wireless body area networks,” Engineering Journal, vol. 15, no. 3, pp. 39-48, 2011.
17. P. A. Belov, G. Palikaras, Y. Zhao, A. Rahman, C. R. Simovski, Y. Hao, and C. G. Parini, “Experimental demonstration of multi-wire endoscopes capable of manipulating near-fields with subwavelength resolution,” Applied Physics Letters, vol. 97, pp. 191905, 2010.
18. Y. Zhao, G. Palikaras, P. A. Belov, R. F. Dubrovka, C. R. Simovski, Y. Hao, and C. G. Parini, “Magnification of subwavelength field distributions using a tapered array of metallic wires with planar interfaces and an embedded dielectric phase compensator,” New Journal of Physics, vol. 12, pp. 103045, 2010.
19. Y. Zhao, and Y. Hao, “Full-wave parallel dispersive finite-difference time-domain modeling of three-dimensional electromagnetic cloaking structures,” Journal of Computational Physics, vol. 228, pp. 7300-7312, 2009.
20. C. Argyropoulos, E. Kallos, Y. Zhao, and Y. Hao, “Manipulating the loss in electromagnetic cloaks for perfect wave absorption,” Optics Express, vol. 17, pp. 8467-8475, 2009.
21. Y. Zhao, P. A. Belov, and Y. Hao, “Subwavelength internal imaging by means of the wire medium,” Journal of Optics A: Pure and Applied Optics, vol. 11, pp. 075101, 2009.
22. C. Argyropoulos, Y. Zhao, and Y. Hao, “A radial-dependent dispersive finite-difference time-domain method for the evaluation of electromagnetic cloaks,” IEEE Transactions on Antennas and Propagation, vol. 57, pp. 1432-1441, 2009.
23. A. Sani, Y. Zhao, and Y. Hao, “An efficient FDTD algorithm based on the equivalence principle for analyzing onbody antenna performance,” IEEE Transactions on Antennas and Propagation, vol. 57, pp. 1006-1014, 2009.
24. P. A. Belov, Y. Zhao, Yang Hao, and Clive Parini, “Enhancement of evanescent waves inside media with extreme optical anisotropy,” Optics Letters, vol. 34, no. 5, 2009.
25. P. A. Belov, Y. Zhao, S. Tse, P. Ikonen, M. G. Silveirinha, C. R. Simovski, S. Tretyakov, Yang Hao, and C. Parini, “Transmission of images with subwavelength resolution to distances of several wavelengths in the microwave range,” Physical Review B, vol. 77, pp. 193108, 2008.
26. Y. Zhao, C. Argyropoulos, and Y. Hao, “Full-wave finite-difference time-domain simulation of electromagnetic cloaking structures,” Optics Express, vol. 16, pp. 6717-6730, 2008.
27. Y. Zhao, and Y. Hao, “Finite-difference time-domain study of guided modes in nano-plasmonic waveguides,” IEEE Transactions on Antennas and Propagation, vol. 55, pp. 3070-3077, 2007.
28. Y. Zhao, P. A. Belov, and Y. Hao, “Accurate modelling of left-handed metamaterials using finite-difference time-domain method with spatial averaging at the boundaries,” Journal of Optics A: Pure and Applied Optics, vol. 9, pp. 468-475, 2007.
29. Y. Zhao, P. A. Belov, and Y. Hao, “Accurate modelling of the optical properties of left-handed media using a finite-difference time-domain method,” Physical Review E, vol. 75, pp. 037602, 2007.
30. Y. Zhao, Y. Hao, and C. G. Parini, “FDTD characterisation of UWB indoor radio channel including frequency dependent antenna directivities,” IEEE Antennas and Wireless Propagation Letters, vol. 6, pp. 191-194, 2007.
31. Y. Zhao, P. A. Belov, and Y. Hao, “Modelling of wave propagation in wire media using spatially dispersive finite-difference time-domain method: numerical aspects,” IEEE Transactions on Antennas and Propagation, vol. 55, pp. 1506-1513, 2007.
32. P. A. Belov, Y. Zhao, S. Sudhakaran, A. Alomainy, and Y. Hao, “Experimental study of the sub-wavelength imaging by a wire medium slab,” Applied Physics Letters, vol. 89, pp. 262109, 2006.
33. Y. Zhao, P. A. Belov, and Y. Hao, “Spatially dispersive finite-difference time-domain analysis of subwavelength imaging by the wire medium slabs,” Optics Express, vol. 14, pp. 5154-5167, 2006.
34. Y. Zhao, Y. Hao, A. Alomainy and C. G. Parini, “UWB on-body radio channel modelling using ray theory and subband FDTD method,” IEEE Transactions on Microwave Theory and Techniques, vol. 54, pp. 1827-1835, 2006.
35. Y. Zhao, Y. Hao and C. G. Parini, “Radiation properties of PIFA on electromagnetic bandgap substrates,” Microwave and Optical Technology Letters, vol. 44, pp. 21-24, 2005.