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RIS Research at the University of Glasgow
Dr Qammer H. Abbasi is a Reader with the James Watt School of Engineering, University of Glasgow, U.K., deputy head for Communication Sensing and Imaging group, deputy theme lead for Quantum & Nanotechnology in the University’s Advance Research Centre, Co-Manager for RF and terahertz laboratory, lead for healthcare and Internet of things use cases with 5G Center Urban testbed and Project Manager for EON XR Centre. He has a grant portfolio of £7M and contributed to more than 450+ leading international technical journals and peer-reviewed conference papers and 10 books and received several recognitions for his research including URSI Young Scientist Awards, UK exceptional talent endorsement by the Royal Academy of Engineering, National talent pool award by Pakistan, International Young Scientist Award by NSFC China, National interest waiver by the USA, University Research Excellence Award from TAMUQ in two consecutive years.
Figure 1. RIS application scenario in health care
The research team under the guidance of Dr Qammer H. Abbasi has lately initiated the design and development of RIS hardware protoypes at Sub 6 GHz. This includes a 1- bit, PIN diode-based, RIS prototype consisting of 4096 individually controlled unit cell elements, operating at sub 6-GHz. A second, PIN diode-based 3-bit RIS prototype consisting of 2043 column-controlled unit cells working at Sub-6 GHz. Different from RIS applications in the communication system, the research team is exploring RIS-assisted RF sensing for health care applications. In the work published in Nature, the work summarize the operational principle of their Intelligent Wall as follows:
“We design a high resolution programmable intelligent surface for three purposes, (1) to be able to scan and point the beam at multiple locations and/or floors; (2) to focus the EM energy at the desired position such that to avoid undesired interferences from the surrounding environment; and (3) to be able to identify various body positions such as sitting, standing and walking using machine learning algorithm by utilizing EM energy collected from the intelligent surface”
“Since the switching rate and the wide scan angle of the intelligent wall is faster and broader, the number of people monitored in principle can be very large but existing work is limited to a single person only”.
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Figure 2. A 1-bit, 4096 element RIS prototype with a dimension of 1.4 m by 1.4 m
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Figure 3. A 3-bit, PIN-diode based, column controlled, 2043 elements RIS prototype
Related Research Papers
[1] Rains, J., Kazim, J. U. R., Tukmanov, A., Cui, T.J., Zhang, L., Abbasi, Q.H. and Imran, M.A., 2021. High-Resolution Programmable Scattering for Wireless Coverage Enhancement: An Indoor Field Trial Campaign. arXiv preprint arXiv:2112.11194.
[2] Usman, M., Rains, J., Cui, T. J., Khan, M. Z., Kazim, J. U. R. , Imran, M. A. and Abbasi, Q. H. (2022) Intelligent wireless walls for contactless in-home monitoring. Light: Science and Applications, 11, 212. (doi: 10.1038/s41377-022-00906-5)
[3] Hassouna, S., Rains, J., Kazim, J. U. R. , Ur Rehman, M. , Imran, M. and Abbasi, Q. H. (2022) Discrete Phase Shifts for Intelligent Reflecting Surfaces in OFDM Communications. In: International Workshop on Antenna Technology (iWAT2022), Dublin, Ireland, 16-18 May 2022, ISBN 9781665494502 (doi: 10.1109/iWAT54881.2022.9810915)
[4] Hassouna, S., Rains, J., Kazim, J. U. R. , Ur Rehman, M. , Imran, M. A. and Abbasi, Q. H. (2022) Investigating the Data Rate of Intelligent Reflecting Surface Under Different Deployments. In: 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, CO, USA, 10-15 Jul 2022, (Accepted for Publication)
[5] Rains, J., Kazim, J. U. R. , Tukmanov, A., Zhang, L. , Abbasi, Q. H. and Imran, M. (2022) Varactor-based reconfigurable intelligent surface with dual linear polarisation at K-band. In: 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, CO, USA, 10-15 Jul 2022, (Accepted for Publication)
[6] Rains, J., Kazim, J. U. R. , Zhang, L. , Tukmanov, A., Abbasi, Q. H. and Imran, M. (2022) Reflecting Metasurface Unit Cell Design with Multi-Bit Azimuthal Control. In: 1st International Conference on Microwave, Antennas & Circuits (ICMAC 2021), Islamabad, Pakistan, 21-22 Dec 2021, ISBN 9781665400862 (doi: 10.1109/ICMAC54080.2021.9678298)
[7] Rains, J., Kazim, J. U. R. , Zhang, L. , Abbasi, Q. H. , Imran, M. A. and Tukmanov, A. (2022) 2.75-Bit Reflecting Unit Cell Design for Reconfigurable Intelligent Surfaces. In: 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Singapore, 04-10 Dec 2021, pp. 335-336. ISBN 9781728146706 (doi: 10.1109/APS/URSI47566.2021.9704689)
[8] Kazim, J. U. R. , Cui, T. J., Zoha, A. , Li, L., Shah, S. A. , Alomainy, A., Imran, M. A. and Abbasi, Q. H. (2021) Wireless on walls: revolutionizing the future of health care. IEEE Antennas and Propagation Magazine, 63(6), pp. 87-93. (doi: 10.1109/MAP.2020.3036063)
[9] Kazim, J. U. R. , Ur-Rehman, M. , Al-Hasan, M., Mabrouk, I. B., Imran, M. A. and Abbasi, Q. H. (2020) Design of 1-Bit Digital Subwavelength Metasurface Element for Sub-6 GHz Applications. In: 5th International Conference on the UK-China Emerging Technologies (UCET 2020), Glasgow, UK, 20-21 Aug 2020, ISBN 9781728194882 (doi: 10.1109/UCET51115.2020.9205382)
–End–
This article is made by Dr Qammer H. Abbasi, a Reader with the James Watt School of Engineering, University of Glasgow, U.K..
