EMF Exposure Effect and Implementation of RIS in Cellular Network in Sub-6 GHz and Millimeter-Wave
There is a concern about the adverse health effects of exposure to electromagnetic fields (EMF) radiated from the numerous wireless devices and base stations. This becomes more critical as wireless technologies have rapidly evolved, implementing the mm-wave frequency range to fulfill massive communication demands. EMF exposure can be categorized into two parts: at lower frequencies (below 6 GHz) and high frequencies (above 6 GHz). For lower frequencies, the EMF exposure is quantified by a specific absorption rate (SAR), while for high frequencies, the EMF exposure is quantified by power density (PD). Compliance with EMF exposure limits is necessary for designing wireless devices and networks.
Furthermore, the introduction of millimeter-wave (mm-wave) frequencies in cellular networks addresses the need for high-speed wireless communication. However, mm-wave signals experience high attenuation predominantly due to their susceptibility to blockage and high directivity. This consequently causes non-line-of-sight (NLOS) conditions and signal attenuations. A reconfigurable intelligent surface (RIS) is one of the possible methods that can solve blockage issues by passively reflecting and rerouting mm-wave signals in desired directions. RIS can enhance network coverage and decrease the effects of blockages compared to networks without RISs.
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- 1 Georgian Drive
- Barrie, Ontario
- Canada L4M 3X9
- Building: E
- Room Number: 212
- Starts 12 July 2025 04:00 AM UTC
- Ends 21 July 2025 04:00 AM UTC
- No Admission Charge
Speakers
Norhuda of Universiti Teknologi Malaysia
Biography:
Norhudah Seman received the B. Eng. (Electrical-Telecommunications) from the Universiti Teknologi Malaysia, Johor, Malaysia, in 2003 and M. Eng. in Radio Frequency and Microwave Communications from The University of Queensland, Brisbane, St. Lucia, Qld., Australia, in 2005. She obtained her Ph.D. degree in Electrical Engineering from the University of Queensland in 2010. In 2003, she was an Engineer at Motorola Technology, Penang, Malaysia, where she was involved with the RF and microwave components design and testing. She was Director (Communication Engineering) from July 2018 to June 2021, and Acting Director (Communication Engineering) from July 2021 to June 2022 at the School of Electrical Engineering, Faculty of Engineering, UTM. Currently, she is an Associate Professor in the Faculty of Electrical Engineering (FKE) and Director of HiCoE, Wireless Communication Centre (WCC), UTM. Her research interests concern the design of microwave/millimeterwave devices, effects of electromagnetic field radiation including specific absorption rate (SAR) and power density, and wireless communications.
Dr. Nor of Universiti Teknologi Malaysia