Qingsha (Shasha) Cheng, Ph.D, P.Eng., SMIEEE

 程庆沙 Qingsha's name in Chinese

email: chengqs@sustc.edu.cn


Available Positions
招收硕士\博士研究生\博士后\工程师启示
Qingsha (Shasha) Cheng was born in Chongqing, China. He received his B.Eng. degree and M.Eng. in automation from Chongqing University, Chongqing, China. He received his Ph.D. degree at McMaster University, Hamilton, Ontario, Canada, in 2004. Currently he is an assistant professor at Southern University of Science and Technology (SUSTech), China since 2014. He was appointed Adjunct Professor with University of Regina, Canada since 2018

In 1998, he joined the Department of Computer Science and Technology, Peking University, Beijing, China. In 1999, he joined the Simulation Optimization Systems Research Laboratory, Department of Electrical and Computer Engineering, McMaster University. He became a postdoctoral fellow in 2004. In 2007, he became a research associate academic and later a research engineer in the Simulation Optimization Systems Research Laboratory (SOS), Department of Electrical and Computer Engineering, McMaster University. He also consulted for Bandler Corporation. Dr. Cheng was a sessional lecturer with Faculty of Engineering at McMaster University from 2007 to 2010. He was a co-organizer and chair of the Third International Workshop on Surrogate Modeling and Space Mapping for Engineering Optimization (SMSMEO 2012). In 2014, he is a co-organizer and chair of an IEEE International Microwave Symposium (IMS) workshop on Recent Advances in Space Mapping Modeling and Optimization. In 2015, he co-organized and chaired an IMS workshop on EM-Based Tuning Techniques, Computer-Aided Tuning and Tuning Space Mapping. In 2016, he was a session co-chair of IEEE NEMO and an orgnizer/session chair of IEEE ICCS (OC member). In 2017, he was a session co-orgnizer and co-chair of IEEE ACES. In 2018, he was a co-orgnizer and co-chair of IEEE ICCEM and IEEE NEMO(TPC member).

Dr. Cheng was one of the orginal contributors of Space Mapping algorithm. He has years of research experience in space mapping, simulator-based tuning, surrogate modeling, computer-aided design, modeling of microwave circuits, software design technology and methodologies for microwave CAD. He has publications in refereed journals, conference papers, book chapters, etc. He has been invited to review papers in highly rated international journals such as IEEE Transactions on Microwave Theory and Techniques and IEEE Microwave and Wireless Components Letters.

Dr. Cheng taught following courses:

  • Engineering Graphics (2007-2010)
  • Java Programming (2015 Fall)
  • Nonlinear Optimization (2016 Fall, 2017 Fall, 2018 Fall)
  • Microwave Engineering (2015 Spring, 2016 Spring, 2017 Spring, 2018 Spring, 2019 Spring)
  • Engineering Ethics (2017 Spring, 2018 Spring, 2019 Spring)
  • Antenna and Wave Propagation (2017 Fall, 2018 Fall)

People

  • Hongcai Chen, Research Assistant Professor
  • Xiaolin Fan,Ph.D. student (co-supervised with Paul Laforge, University of Regina, Canada)
  • Fan Jiang, Ph.D. student (co-supervised with Ross Murch, HKUST, Hongkong)
  • Song (Sam) Li, Ph.D. student (co-supervised with Paul Laforge, University of Regina, Canada)
  • Ying Liu, Master's student
  • Arjun Kumar, Visiting scholar (Bennett University, India)
  • Yiran Song, Master's student
  • Kaidi Xie, Master's student (Graduated, 2018)
  • Yang Yu, Ph.D. student (co-supervised with Michael Lancaster, University of Birmingham, UK and Bo Liu, Wrexham Glyndwr University, UK)
  • Zhen Zhang, Ph.D. student

 

 Dr. Qingsha S. Cheng


PUBLICATIONS

Journal Papers

  1. A. Bekasiewicz, S. Koziel, and Q.S. Cheng, “Analysis of circular polarization antenna design trade-offs using low-cost EM-driven multi-objective optimization,”Int. J. RF and Microwave Computer-Aided Engineering, 2019.
  2.  C. Fan, B. Wu, Q.-M. Huang, J.-Z. Chen, and Q.S. Cheng, “Double-layer microstrip ultra-wideband filtering power divider with high selectivity and large isolation,” Int. J. RF and Microwave Computer-Aided Engineering, 2019.
  3. H. Chen, Y. Zhang, Y. Du, and Q.S. Cheng, “Lightning propagation analysis on telecommunication towers above the perfect ground using full-wave time domain PEEC method,” IEEE Transactions on Electromagnetic Compatibility, 2019.
  4. B. Wu , H.-R. Zu, B.-Y. Xue, Y.-T. Zhao, and Q.S.Cheng, “Flexible wideband power divider with high isolation incorporating spoof surface plasmon polaritons transition with graphene flake,” Applied Physics Express, vol. 12, no. 2, Feb. 2019.
  5. L. WY Liu, A. Kandwal, H. Shi, and Q.S. Cheng, “Wireless power transfer using an RF plasma,” IEEE Access, vol. 6, 2018.
  6. L. Xia, B. Wu, J.Z. Chen, T. Su, and Q.S. Cheng, “A high-Q miniaturized suspended stripline resonator for pseudoelliptic filter design,” IEEE Access, vol. 6, 2018.
  7. H. Chen, Y. Zhang, Y. Du, and Q.S. Cheng, “Lightning transient analysis of telecommunication system with a tubular tower,” IEEE Access, vol. 6, 2018.
  8. C.-Y. Chiu, S. Shen, F. Jiang, K. Ishimiya, Q.S. Cheng, and R.D. Murch, “Reconfigurable metal chassis antenna,” IEICE Trans. Commun., 2018.
  9. M.A. Ul Haq, S. Koziel, and Q.S. Cheng, “Miniaturization of wideband antennas by means of feed line topology alterations,” IET Microwaves, Antennas & Propagation, 2018.
  10. A. Bekasiewicz, S. Koziel, and Q.S. Cheng, “Reduced-cost constrained miniaturization of wideband antennas using improved trust-region gradient search with repair step,”IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 4, pp. 559-562, Apr. 2018.
  11. S. Koziel, Q.S. Cheng, and S. Li, “Optimization-driven antenna design framework with multiple performance constraints,”Int. J. RF and Microwave Computer-Aided Engineering, 2017.
  12. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Response features for low-cost statistical analysis and tolerance-aware design of antennas,” Int. J. Numerical Modelling, 2017.
  13. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Conceptual design and automated optimization of a novel compact UWB MIMO slot antenna,” IET Microwaves, Antennas & Propagation, vol. 11, no. 8, pp. 1162-1168, May 2017.
  14. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Feature-based surrogates for low-cost microwave modeling and optimization,” IET Microwaves, Antennas & Propagation, vol. 9, no. 15, pp. 1706-1712, Sept. 2015.
  15. S. Koziel, S. Ogurtsov, Q.S. Cheng, and J.W. Bandler, “Rapid EM-based microwave design optimization exploiting shape-preserving response prediction and adjoint sensitivities,” IET Microwaves, Antennas & Propagation, vol. 8, no. 10, 775-781, Apr. 2014.
  16. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Fast EM modeling exploiting shape-preserving response prediction and space mapping,” IEEE Trans. Microwave Theory Tech., vol. 62, no. 3, pp. 399-407, Mar. 2014.
  17. S. Koziel, S. Ogurtsov, J.W. Bandler, and Q.S. Cheng, “Reliable space-mapping optimization integrated with EM-based adjoint sensitivities,” IEEE Trans. Microwave Theory Tech., vol. 61, no. 10, pp. 3493-3502, Oct. 2013.
  18. S. Tu, Q.S. Cheng, Y. Zhang, J.W. Bandler, and N.K. Nikolova, “Space mapping optimization of handset antennas exploiting thin-wire models,” IEEE Trans. Antennas Propag., vol. 61, no. 1, pp. 3797-3807, July 2013.
  19. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Reduced-cost microwave component modeling using space-mapping-enhanced EM-based kriging surrogates,” International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, vol. 26, no. 3, pp. 275-286, May/June 2013.
  20. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Tuning space mapping: the state of the art,” Int. J. RF and Microwave Computer-Aided Engineering, vol. 22, no. 6, pp. 639-651, Nov. 2012.
  21. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Comparative study of space-mapping-based techniques for microwave design optimization,” IET Microwaves, Antennas & Propagation, vol. 6, no. 3, pp. 361-370, Mar. 2012.
  22. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Constrained parameter extraction for microwave design optimisation using implicit space mapping,” IET Microwaves, Antennas & Propagation, vol. 5, no. 10, pp. 1156-1163, July 2011.
  23. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Tuning space mapping design framework exploiting reduced EM models,” IET Microwaves, Antennas & Propagation, vol. 5, no. 10, pp. 1219-1226, July 2011.
  24. A. Khalatpour, R.K. Amineh, Q.S. Cheng, M.H. Bakr, N.K. Nikolova, and J.W. Bandler, “Accelerating space mapping optimization with adjoint sensitivities,” IEEE Microw.Wireless Compon. Lett., vol. 21, no.6, pp. 280-282, June 2011.
  25. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Rapid design optimization of microwave structures through automated tuning space mapping,” IET Microwaves, Antennas & Propagation, vol. 4, no. 11, pp. 1892-1902, Nov. 2010.
  26. Q.S. Cheng, J.W. Bandler, S. Koziel, M.H. Bakr, and S. Ogurtsov, “The state of the art of microwave CAD: EM-based optimization and modeling,” Int. J. RF and Microwave Computer-Aided Eng., vol. 20, no.5, pp. 475-491, Sep. 2010.
  27. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Robust trust-region space-mapping algorithms for microwave design optimization,” IEEE Trans. Microwave Theory and Tech., vol.58, no.8, pp. 2166-2174, Aug. 2010.
  28. Q.S. Cheng, J.C. Rautio, J.W. Bandler, and S. Koziel, “Progress in simulator-based tuning—the art of tuning space mapping,” IEEE Microwave Magazine, vol. 11, no. 4, pp. 96-110, May 2010.
  29. S. Koziel, Q.S. Cheng and J.W. Bandler, “Implicit space mapping with adaptive selection of preassigned parameters,” IET Microwaves, Antennas & Propagation, vol. 4, no. 3, p.361-373, Mar. 2010.
  30. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Space mapping design framework exploiting tuning elements,” IEEE Trans. Microwave Theory and Tech., vol. 57, no. 1, pp. 136-144, Jan. 2010.
  31. S. Koziel, J. Meng, J.W. Bandler, M.H. Bakr, and Q.S. Cheng, “Accelerated microwave design optimization with tuning space mapping,” IEEE Trans. Microwave Theory Tech., vol. 57, no. 2, pp. 383-394, Feb. 2009.
  32. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Space mapping,” IEEE Microwave Magazine, vol. 9, no. 6,  pp. 105-122, Dec. 2008.
  33. Q.S. Cheng, J.W. Bandler, and J.E. Rayas-Sánchez, “Tuning-aided implicit space mapping,” Int. J. RF and Microwave Computer-Aided Engineering, vol. 18, no. 5, pp. 445-453, Sep. 2008.
  34. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Combining coarse and fine models for optimal design,” IEEE Microwave Magazine, vol. 9, no. 1, pp. 79-88, Feb. 2008.
  35. Q.S. Cheng, S. Koziel, and J.W. Bandler, “Simplified space mapping approach to enhancement of microwave device models,” Int. J. RF and Microwave Computer-Aided Engineering, vol. 16, no. 5, pp. 518-535, Sep. 2006.
  36. J.W. Bandler, Q.S. Cheng, D.M. Hailu, and N.K. Nikolova, “A space-mapping design framework,” IEEE Trans. Microwave Theory Tech., vol. 52, 2004, pp. 2601-2610.
  37. J.W. Bandler, Q.S. Cheng, N.K. Nikolova, and M.A. Ismail, “Implicit space mapping optimization exploiting preassigned parameters,” IEEE Trans. Microwave Theory Tech., vol. 52, no. 11, pp. 378-385, Nov. 2004.
  38. J.W. Bandler, Q.S. Cheng, S.A. Dakroury, A.S. Mohamed, M.H. Bakr, K. Madsen, and J. Søndergaard, “Space mapping: the state of the art,” IEEE Trans. Microwave Theory Tech., vol. 52, no. 1, pp. 337-361, Jan. 2004.

Book Chapters

  1. S. Koziel, S. Ogurtsov, Q.S. Cheng, and J.W. Bandler, “Space mapping,” in Simulation-Driven Design Optimization and Modeling for Microwave Engineering, S. Koziel, X.S. Yang, and Q.J. Zhang (Eds.), Imperial College Press, 2013, pp. 81-105.
  2. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Tuning space mapping,” in Simulation-Driven Design Optimization and Modeling for Microwave Engineering, S. Koziel, X.S. Yang, and Q.J. Zhang (Eds.), Imperial College Press, 2013, pp. 107-128.

Conference Proceedings (refereed)

  1. A.O. Fadamiro, O.J. Famoriji, R.S. Zakariyya, F. Lin,F. Jiang, Q.S. Cheng, A. Somefun, and E.O. Ogunti, “Aggressive space mapping technique for reconfigurable hexagonal patch antenna design,” IEEE AP-S/URSI Int. Symp. on Antennas and Propag. (Atlanta, GA, July 2019).
  2. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “EM-based design approach for multiband filters by reflected group delay method and cascade space mapping,” IEEE MTT-S Int. Microwave Symp.(Boston, MA, June 2019).
  3. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “A dualband coupling matrix method for designing quad-channel diplexer,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) (Boston, MA, May-June 2019).
  4. L. Zhou, Y. Kuang, S. Li, X. Fan, and Q.S. Cheng, “Automatic impedance matching for three-stub waveguide tuner based on space mapping,” 11th International Conference on Microwave and Millimeter Wave Technology (ICMMT2019)(Guangzhou, China, May 2019).
  5. Y. Kuang, L. Zhou, S. Li, X. Fan, and Q.S. Cheng, “A tuning method for triple-stub tuner using knowledge-based surrogate model,” 11th International Conference on Microwave and Millimeter Wave Technology (ICMMT2019)(Guangzhou, China, May 2019).
  6. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “Design of a compact quad-channel diplexer using stepped-impedance resonator,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Shanghai, China, Mar. 2019).
  7. S. Li, X. Fan, P.D. Laforge, and Q.S. Cheng, “Multistage modeling and space mapping for automated microwave filter design ,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Shanghai, China, Mar. 2019).
  8. M.A Ul Haq, S. Koziel, and Q.S. Cheng, “A Novel Isolation Improvement Technique for Wideband MIMO Antenna Systems,” European Conference on Antennas and Propagation (EuCAP) (Krakow, Poland, Mar.-Apr., 2019).
  9. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “The sequential parameter extraction for EM-based design of dielectric-resonator bandpass filter,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Reykyavik, Iceland, Aug. 2018).
  10. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “An efficient EM-based ultra-wideband bandpass filter design,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Reykyavik, Iceland, Aug. 2018).
  11. U. Ullah, S. Koziel, and Q.S. Cheng, “Design of a novel compact structure of a wide-slot circularly polarized antenna,”International Applied Computational Electromagnetics Society (ACES) Symposium (Beijing, China, July-Aug. 2018).
  12. M.A. Ul Haq, S. Koziel, and Q.S. Cheng, “On feed line modifications for compact wideband antenna design,”European Conference on Antennas and Propagation (EUCAP) (London, UK, Apr. 2018).
  13. S. Ogurtsov, S. Koziel, Y. Yu, and Q.S. Cheng, “Design and validation of corporate feeds for low sidelobe microstrip linear arrays,”European Conference on Antennas and Propagation (EUCAP) (London, UK, Apr. 2018).
  14. A. Bekasiewicz, S. Koziel, and Q.S. Cheng, “Novel miniaturized circular polarization antenna with elliptical slots and feed with loaded stubs,”European Conference on Antennas and Propagation (EUCAP) (London, UK, Apr. 2018).
  15. S. Li, Q.S. Cheng, G.-L. Huang, X. Fan, and P.D. Laforge, “Frequency-Dependent Implicit Space-Mapping Algorithm for Wideband Microwave Prototyping,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Chengdu, China, Mar. 2018).
  16. A. Bekasiewicz, S. Koziel, Q.S. Cheng, and X. Fan, “Design trade-offs of compact circular polarization antennas by means of multi-objective optimization,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Chengdu, China, Mar. 2018).
  17. X. Fan, S. Li, P.D. Laforge, and Q.S. Cheng, “An EM-based cascade design procedure for high-order bandpass filter,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Chengdu, China, Mar. 2018).
  18. A. Bekasiewicz, S. Koziel, Q.S. Cheng, and S. Li, “Constrained low-cost size reduction of wideband antennas by means of enhanced trust-region search algorithm,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Chengdu, China, Mar. 2018).
  19. M.A. Ul Haq, S. Koziel, and Q.S. Cheng, “Miniaturization of wideband antennas by means of ground plane modifications: a case study,” IEEE International Conference on Computational Electromagnetics (ICCEM) (Chengdu, China, Mar. 2018).
  20. K. Xie, L. WY LIU, Q. Zhang, and Q.S. Cheng, “Monitoring blood glucose fluctuation using SIW cavity with a coupling slot,” The 6th Asia-Pacific Conference on Antennas and Propagation (APCAP) (Xi'an, China, Oct. 2017).
  21. S. Koziel, J.W. Jayasinghe, J. Anguera, Q.S. Cheng, and D.N. Uduwawala, “Optimization of high-directivity fan-beam antennas,”International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  22. S. Ogurtsov, S. Koziel, and Q.S. Cheng, “Design of compact microstrip branchline couplers for broadband circularly polarized DRAs,”International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  23. S. Koziel and Q.S. Cheng, “Size reduction of UWB antennas with performance constraints,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  24. A. Bekasiewicz, S. Koziel, Q.S. Cheng, and J.W. Bandler, “EM-driven multi-objective design of impedance transformers by Pareto ranking bisection algorithm,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  25. M.A. Ul Haq, S. Koziel, and Q.S. Cheng, “EM-driven size reduction of UWB antennas with ground plane modifications,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  26. M.A. Ul Haq, S. Koziel, and Q.S. Cheng, “A structure and design optimization of compact antenna for Internet of Things applications,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  27. S. Li, X. Fan, P.D. Laforge, Q.S. Cheng, and S. Koziel, “Automated EM-level design framework for sequential coupled resonator filter,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  28. F. Jiang, S. Li, Y. Yu, Q.S. Cheng, and S. Koziel, “Sensitivity optimization of antenna for non-invasive blood glucose monitoring,” International Applied Computational Electromagnetics Society Symp. (ACES-China) (Suzhou, China, Aug. 2017).
  29. X. Fan,S. Li, P.D. Laforge, and Q.S. Cheng, “A sequentially coupled filter design approach using the reflected group delay method and the implicit space mapping technique,” IEEE MTT-S Int. Microwave Symp.(Honolulu, HI, June 2017).
  30. S. Li, X. Fan, P.D. Laforge, and Q.S. Cheng, “Space mapping post-fabrication tuning of 3D printed air-filled waveguide filter,” IEEE MTT-S Int. Microwave Symp.(Honolulu, HI, June 2017).
  31. S. Koziel, A. Bekasiewicz, Q.S. Cheng, and Q. Zhang, “Multi-objective design of miniaturized impedance transformers by domain segmentation,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Sevilla, Spain, May 2017).
  32. P. Kurgan, S. Koziel, and Q.S. Cheng, “Multi-objective EM-based design optimization of compact branch-line coupler,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Sevilla, Spain, May 2017).
  33. P. Kurgan, S. Koziel, and Q.S. Cheng, “EM-driven design of recurrent slow-Wave structures,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Sevilla, Spain, May 2017).
  34. S. Koziel, A. Bekasiewicz, Q.S. Cheng, and Q. Zhang, “Pareto ranking bisection algorithm for rapid multi-objective design of antenna structures,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Sevilla, Spain, May 2017).
  35. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “On ultra-wideband antenna miniaturization involving efficiency and matching constraints,” European Conference on Antennas and Propagation (EUCAP) (Paris, France, Mar. 2017).
  36. S. Koziel, A. Bekasiewicz, Q.S. Cheng,and S. Li, “Accelerated multi-objective design optimization of antennas by surrogate modeling and domain segmentation,” European Conference on Antennas and Propagation (EUCAP) (Paris, France, Mar. 2017).
  37. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Multi-objective optimization of compact UWB impedance matching transformers using Pareto front exploration and adjoint sensitivities,” The 15th IEEE International Conference on Communication Systems (IEEE ICCS), (Shenzhen, China, Dec., 2016).
  38. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Fast re-design of antenna structures with respect to substrate permittivity and thickness,” IEEE Loughborough Antennas and Propagation Conference (LAPC), (Loughborough, UK, Nov., 2016).
  39. A. Bekasiewicz, S. Koziel, and Q.S. Cheng, “Reflection response control of bandwidth-enhanced antennas through constrained optimization,” IEEE Loughborough Antennas and Propagation Conference (LAPC), (Loughborough, UK, Nov., 2016).
  40. S. Koziel and Q.S. Cheng, “Reduced-cost data-driven modeling of antenna structures,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).
  41. S. Koziel, A. Bekasiewicz, Q.S. Cheng, and Q. Zhang, “Expedited EM-driven design optimization of compact dual-band microwave couplers using adaptive response Scaling,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).
  42. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Expedited two-objective dimension scaling of compact microwave passives using surrogate models,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).  
  43. A. Bekasiewicz, S. Koziel, Q.S. Cheng,and Y. Chen “Response features for fast EM-driven design of miniaturized impedance matching transformers,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016). 
  44. S. Koziel, A. Bekasiewicz, Q.S. Cheng,and Y. Chen “Reduced-cost modeling of dual-band antennas exploiting response features,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).
  45. S. Koziel, A. Bekasiewicz, and Q.S. Cheng, “Patch size setup and performance/cost trade-offs in multi-objective antenna optimization using domain patching technique,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).
  46. S. Koziel, Q.S. Cheng, and Q. Zhang, “On low-cost space mapping optimization of antenna structures,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016).  
  47. S.Koziel, A. Bekasiewicz, and Q.S. Cheng, “Geometry scaling of UWB antennas with respect to material properties of the substrate,”IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) for RF, Microwave and Terahertz Applications (Beijing, China, July 2016). 
  48. Q.S. Cheng, J.W. Bandler, and S. Koziel, “A Review of implicit space mapping optimization and modeling techniques,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (Ottawa, ON, Canada, Aug. 2015).
  49. Q.S. Cheng, J.W. Bandler, and S. Koziel, “A maximally flat quadratic interpolation enhanced input space mapping modeling approach,” IEEE MTT-S Int. Microwave Symp. Digest (Tampa, FL, June 2014).
  50. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Low-cost feature-based modeling of microwave structures,” IEEE MTT-S Int. Microwave Symp. Digest (Tampa, FL, June 2014).
  51. Q.S. Cheng, J.W. Bandler, N.K. Nikolova, and Slawomir Koziel, “A statistical input space mapping approach for accommodating modeling residuals,” IEEE MTT-S Int. Microwave Symp. Digest (Seattle, WA, June 2013).
  52. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Enhanced fidelity modeling of microwave structures combining shape-preserving response prediction with space mapping,” IEEE MTT-S Int. Microwave Symp. Digest (Seattle, WA, June 2013).
  53. S. Tu, Q. S. Cheng, J. W. Bandler, and N. K. Nikolova, “Space mapping design exploiting library antenna models,” IEEE AP-S/URSI Int. Symp. on Antennas and Propag. (Chicago, IL, July 2012).
  54. J.W. Bandler and Q.S. Cheng, “Retrospective on microwave CAD and optimization technology,” IEEE MTT-S Int. Microwave Symp. Digest (Montreal, QC, June 2012).
  55. S. Koziel, S. Ogurtsov, J.W. Bandler, and Q.S. Cheng, “Robust space mapping optimization exploiting EM-based models with adjoint sensitivities,” IEEE MTT-S Int. Microwave Symp. Digest (Montreal, QC, June 2012).
  56. Q.S. Cheng, J.W. Bandler, N.K. Nikolova, and S. Koziel, “A space mapping schematic for fast EM-based modeling and design,” IEEE MTT-S Int. Microwave Symp. Digest (Montreal, QC, June 2012).
  57. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Tuning space mapping for microwave design optimization,” Int. Review of Progress in Applied Computational Electromagnetics (Williamsburg, VA, 2011), pp. 381-386.
  58. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Comparative study of space-mapping-based optimization techniques for microwave design,” Microwave Integrated Circuits Conf. (EuMIC) (Manchester, UK, Oct. 2011), pp. 422-425.
  59. A. Khalatpour, R.K. Amineh, Q.S. Cheng, J.W. Bandler, and N.K. Nikolova, “Adjoint-accelerated design framework for novel materials in microwave applications,” European Microwave Conf. (Manchester, UK, Oct. 2011), pp. 440-443.
  60. Q.S. Cheng, J.W. Bandler, N.K. Nikolova, and S. Koziel, “Fast space mapping modeling with adjoint sensitivity” IEEE MTT-S Int. Microwave Symp. Digest  (Baltimore, MD, June 2011).
  61. J.W. Bandler, Q.S. Cheng, M.H. Bakr, S. Koziel, and N.K. Nikolova, “Electromagnetics-based CAD and optimization of microwave circuits exploiting time-domain techniques,” IEEE MTT-S Int. Microwave Symp. Digest (Baltimore, MD, June 2011).
  62. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Design optimization of microwave circuits through fast embedded tuning space mapping,” European Microwave Conf. (Paris, France, Sept. 2010), pp. 1186-1189.
  63. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Response corrected tuning space mapping for yield estimation and design centering,” IEEE MTT-S Int. Microwave Symp. Digest (Anaheim, CA, May 2010), pp. 193-196.
  64. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Adaptively constrained parameter extraction for robust space mapping optimization of microwave circuits,” IEEE MTT-S Int. Microwave Symp. Digest (Anaheim, CA, May 2010), pp. 205-208.
  65. Q.S. Cheng, J.W. Bandler, and S. Koziel, “Tuning space mapping optimization exploiting embedded surrogate elements,” IEEE MTT-S Int. Microwave Symp. Digest (Boston, MA, June 2009), pp. 1257-1260.
  66. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Trust-region-based convergence safeguards for space mapping design optimization of microwave circuits,” IEEE MTT-S Int. Microwave Symp. Digest (Boston, MA, June 2009), pp. 1261-1264.
  67. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Microwave design optimization using implicit space mapping with adaptive selection of preassigned parameters,” Int. Review of Progress in Applied Computational Electromagnetics, ACES 2009, (Monterey, CA, Mar. 8-12, 2009), pp. 59-64 .
  68. Q.S. Cheng, J.W. Bandler, and S. Koziel, “A simple ADS schematic for space mapping,” IEEE MTT-S Int. Microwave Workshop Series (IMWS 2009) On Signal Integrity and High -Speed Interconnects (Guadalajara, Mexico, Feb. 2009).
  69. J. Meng, S. Koziel, J.W. Bandler, M.H. Bakr, and Q.S. Cheng, “Tuning space mapping: a novel technique for engineering design optimization,” IEEE MTT-S Int. Microwave Symp. Digest (Atlanta, GA, June 2008), pp 991-994.
  70. S. Koziel, J.W. Bandler, and Q.S. Cheng, “Adaptive space mapping with convergence enhancement for optimization of microwave structures and devices,” IEEE MTT-S Int. Microwave Symp. Digest (Atlanta, GA, June 2008), pp. 987-990.
  71. S. Koziel, Q.S. Cheng, and J.W. Bandler, “Improving efficiency of space mapping optimization of microwave structures and devices,” IEEE MTT-S Int. Microwave Symp. Digest (Honolulu, HI, June 2007), pp. 1995-1998.
  72. Q.S. Cheng and J.W. Bandler, “An implicit space mapping technique for component modeling,” Proc. 36th European Microwave Conf. (Manchester, UK, Sep. 2006), pp. 458-461.
  73. J.W. Bandler and Q.S. Cheng, “New developments in space mapping CAD technology,” (invited), China-Japan Joint Microwave Conference (Chengdu, China, Aug. 2006), pp. 1-4.
  74. Q.S. Cheng and J.W. Bandler, “An automated space mapping framework,” Frontiers in Applied Computational Electromagnetics (FACE 2006) (Victoria, BC, Canada, June 2006).
  75. J.W. Bandler, Q.S. Cheng, and S. Koziel, “Implementable space mapping approach to enhancement of microwave device models,” IEEE MTT-S Int. Microwave Symp. Digest (Long Beach, CA, June 2005), pp. 1139-1142.
  76. J.W. Bandler, Q.S. Cheng, D.M. Hailu, A.S. Mohamed, M.H. Bakr, K. Madsen, and F. Pedersen, “Recent trends in space mapping technology,” Proc. 2004 Asia-Pacific Microwave Conf. (APMC04) (New Delhi, India, Dec. 2004).
  77. J.W. Bandler and Q.S. Cheng, “Space mapping: a novel design and modeling methodology,” 4th Int. Conference on Microwave and Millimeter Wave Technology 2004 (Beijing, China, Aug. 2004), pp. 785-788.
  78. J.W. Bandler, Q.S. Cheng, S.A. Dakroury, D.M. Hailu, K. Madsen, A.S. Mohamed, and F. Pedersen, “Space mapping interpolating surrogates for highly optimized EM-based design of microwave devices,” IEEE MTT-S Int. Microwave Symp. Digest (Fort Worth, TX, June 2004), pp. 1565-1568.
  79. J.W. Bandler, Q.S. Cheng, D.H. Gebre-Mariam, and N.K. Nikolova, “An implementable space mapping design framework,” IEEE MTT-S Int. Microwave Symp. Digest (Fort Worth, TX, June 2004), pp. 703-706.
  80. J.W. Bandler and Q.S. Cheng, “Advances in space mapping optimization using implicit and output mappings,” The 3rd Annual McMaster Optimization Conference: Theory and Applications (MOPTA 03) (Hamilton, ON, Canada, July 2003).
  81. J.W. Bandler, Q.S. Cheng, S.A. Dakroury, A.S. Mohamed, M.H. Bakr, K. Madsen, and J. Søndergaard, “Space mapping: the state of the art,” Int. Microwave and Optoelectronics Conference (Iguazu Falls, Brazil, Sep. 2003), pp. 951-956.
  82. J.W. Bandler, Q.S. Cheng, D.H. Gebre-Mariam, K. Madsen, F. Pedersen, and J. Søndergaard, “EM-based surrogate modeling and design exploiting implicit, frequency and output space mappings,” IEEE MTT-S Int. Microwave Symp. Digest (Philadelphia, PA, June 2003), pp. 1003-1006.
  83. J.W. Bandler and Q.S. Cheng, “Implicit space mapping engineering optimization exploiting preassigned parameters,” The 2nd Annual McMaster Optimization Conference: Theory and Applications (MOPTA 02) (Hamilton, ON, Canada, Aug. 2002).
  84. J.W. Bandler, Q.S. Cheng, N. Georgieva, and M.A. Ismail, “Implicit space mapping EM-based modeling and design using preassigned parameters,” IEEE MTT-S Int. Microwave Symp. Digest (Seattle, WA, June 2002), pp. 713-716.
  85. M.H. Bakr, J.W. Bandler, Q.S. Cheng, M.A. Ismail, and J.E. Rayas-Sánchez, “SMX—A novel object-oriented optimization system,” IEEE MTT-S Int. Microwave Symp. Digest (Phoenix, AZ, May 2001), pp. 2083-2086.

Workshop and Invited Seminar Presentations

  1. M. Yu and Q.S. Cheng, “Smart modeling of large RF/microwave problems,” Huawei Shanghai Research Center, China, Dec. 3, 2018.
  2. Q.S.Cheng, “Recent trends in surrogate-based optimization, tuning and modeling,” University of Waterloo, Waterloo, Canada, Aug.9, 2018.
  3. Q.S.Cheng, “Space mapping and surrogate: microwave applications,” Xidian University, Xi'an, China, Sep. 29, 2017.
  4. Q.S. Cheng, “CAD framework for novel materials in microwave applications,”Metamaterial Science and Applications Workshop, Chengdu, China, Apr. 8, 2016. 
  5. Q.S. Cheng, “Tuning space mapping: the state of the art,” IMS Workshop WFI EM-Based Tuning Techniques, Computer-Aided Tuning and Tuning Space Mapping, Phoenix, AZ, May 2015.
  6. Q.S. Cheng and J.W. Bandler, “Implementation of space mapping in commercial software,” IMS Workshop WFE Recent Advances in Space Mapping Modeling and Optimization, Tampa Bay, FL, June 2014.
  7. Q.S. Cheng, J.W. Bandler, S. Koziel, and K. Madsen, “Modeling and optimization of microwave and RF circuits exploiting space mapping,” Tianjin University, Tianjin, China, Jan. 12, 2014.
  8. Q.S. Cheng and J.W. Bandler, “Implementation of space mapping optimization and modeling in Agilent ADS,” Presentation to Design Engineering Teams, Freescale Semiconductor Inc., Tempe, AZ, Oct. 25, 2012.
  9. Q.S. Cheng, J.W. Bandler, and S. Koziel “Tuning Space Mapping: The State of the Art,” The Third International Workshop on Surrogate Modelling and Space Mapping For Engineering Optimization (SMSMEO 2012) (Reykjavik University, Iceland, Aug. 9-11, 2012).
  10. J.W. Bandler and Q.S. Cheng, “The Essence of Space Mapping: Less is More,” The Third International Workshop on Surrogate Modelling and Space Mapping For Engineering Optimization (SMSMEO 2012) (Reykjavik University, Iceland, Aug. 9-11, 2012).
  11. J.W. Bandler, Q.S. Cheng, and S. Koziel “Model Generation Using Space Mapping Techniques,” IEEE MTT-S Int. Microwave Symp. Workshop on Advanced Techniques For Electromagnetics-based Model Generation (Montreal, QC, Canada, June 18, 2012)
  12. Q.S. Cheng, J.W. Bandler, and S. Koziel “Tuning Space Mapping: The State of the Art,” Session 2P6  Microwave and Millimeter Wave Circuits and Devices, The 31st Progress In Electromagnetics Research Symposium (PIERS) (Kuala Lumpur, Malaysia, 28 March, 2012).
  13. Q.S. Cheng, J.W. Bandler, N.K. Nikolova, and S. Koziel, “Simulation-Driven Optimization and Modeling with Adjoint Sensitivities,” Int. Workshop on Advances in Simulation-Driven Optimization and Modeling (ASDOM 2011) (Reykjavik University, Iceland, Aug. 13-14, 2011)
  14. J.W. Bandler, Q.S. Cheng, and S. Koziel, “Exploitation of Simulators and Surrogates in Optimization-driven Design: the Art and the Science,” Int. Workshop on Advances in Simulation-Driven Optimization and Modeling (ASDOM 2011) (Reykjavik University, Iceland, Aug. 13-14, 2011).
  15. J.W. Bandler, Q.S. Cheng, and S. Koziel, “Microwave CAD Using Surrogate Optimization and Space Mapping,” IEEE MTT-S Int. Microwave Symp. Workshop on WME: Simulation- and Surrogate-Driven Microwave Design Technology (Baltimore, MD, June 6, 2011).
  16. Q.S. Cheng, J.W. Bandler, S. Koziel, and K. Madsen, “Advanced EM design using surrogate models and space mapping,” Academic Lecture, (Zhejiang University, Hangzhou, Zhejiang, China, June 22, 2010).
  17. J.W. Bandler, Q.S. Cheng, S. Koziel, “Surrogate modeling and space mapping: the state of the art,” IEEE MTT-S Int. Microwave Symp. Workshop on EM-Based Microwave Optimization Technology: State of the Art and Applications (Boston, MA, June 12, 2009).
  18. J.W. Bandler, Q.S. Cheng, S. Koziel, and K. Madsen, “Rapid design with electromagnetic accuracy: space mapping and beyond,” IEEE MTT-S Int. Microwave Symp. Workshop on Advances in CAD Techniques for EM Modeling and Design Optimization (Atlanta, GA, June 15, 2008).
  19. J.W. Bandler, Q.S. Cheng, S. Koziel, and K.Madsen, “Engineering modeling and optimization via space mapping: from concept to practice,” Workshop on Space-Mapping and Efficient Optimization (CWI, Amsterdam, The Netherlands, Nov. 13, 2006).
  20. A.S. Mohamed, S. Koziel, J.W. Bandler, M.H. Bakr, and Q.S. Cheng, “Rosenbrock-like problems: SMF versus other SBO implementations,” Second Int. Workshop on Surrogate Modelling and Space Mapping for Engineering Optimization (SMSMEO-06) (Lyngby, Denmark, Nov. 9-11, 2006).
  21. J.W. Bandler, Q.S. Cheng, S. Koziel, and K. Madsen, “Why space mapping works,” Second Int. Workshop on Surrogate Modelling and Space Mapping for Engineering Optimization (SMSMEO-06) (Lyngby, Denmark, Nov. 9-11, 2006).
  22. J.W. Bandler, Q.S. Cheng, and S. Koziel, “Space mapping technology for EM-based modeling and optimization: the state of the art,” Second ITESO-Intel International Workshop on Signal Integrity (I3WSI-2006) (Guadalajara, Mexico, Oct. 5-6, 2006).
  23. J.W. Bandler, Q.S. Cheng, S. Koziel, and K. Madsen, “Space mapping technology: what it is and why it works,” IEEE MTT-S Int. Microwave Symp. Workshop on Microwave Component Design Using Space Mapping Technology (San Francisco, CA, June 2006).
  24. J.W. Bandler, Q.S. Cheng, S. Koziel, A.S. Mohamed, and K. Madsen, “Automated design and optimization exploiting surrogate models and space mapping,” IEEE MTT-S Int. Microwave Symp. Workshop on Advances in Automated Modeling and Microwave Design (Long Beach, CA, June 2005).
  25. J.W. Bandler, Q.S. Cheng, and D.M. Hailu, “Device and component modeling and optimization exploiting space mapping and space-mapping based surrogate modeling,” IEEE MTT-S Int. Microwave Symp. Workshop on Advances and New Directions in Device Modeling and Design Optimization for Microwave CAD (Fort Worth, TX, June 2004).
  26. J.W. Bandler and Q.S. Cheng, “Implicit space mapping optimization exploiting preassigned parameters,” Micronet Annual Workshop 2003 (Toronto, ON, Canada, Sep. 2003).
  27. J.W. Bandler, Q.S. Cheng, S.A. Dakroury, A.S. Mohamed, M.H. Bakr, K. Madsen, and J. Søndergaard, “EM-based component modeling and design using space mapping,” IEEE MTT-S Int. Microwave Symp. Workshop on Microwave Component Design Using Space Mapping Methodologies (Philadelphia, PA, June 2003).
  28. J.W. Bandler and Q.S. Cheng, “Theory and applications of implicit space mapping using preassigned parameters,” Workshop on Optimization Engines for Wireless and Microwave Computer Aided Engineering at Carleton University (Ottawa, ON, Canada, June 2002).
  29. J.W. Bandler and Q.S. Cheng, “Space mapping approaches to EM-based device modeling and component design,” IEEE MTT-S Int. Microwave Symp. Workshop on Microwave Component Design Using Space Mapping Methodologies (Seattle, WA, June 2002).
  30. J.W. Bandler, M.H. Bakr, Q.S. Cheng, M.A. Ismail, and J.E. Rayas-Sánchez, “Applications of space mapping optimization technology to filter design,” IEEE MTT-S Int. Microwave Symp. Workshop on State-of-The-Art Filter Design Using EM and Circuit Simulation Techniques (Phoenix, AZ, May 2001).