PLENARY speaker 1
SOFTWARE-DEFINED NETWORKING (SDN) IN FOG COMPUTING: THE SWITCH MIGRATION TECHNIQUE
Prof. Dr. Sharifah Hafizah Syed Ariffin
Professor at Faculty of Electrical Engineering, Universiti Teknologi Malaysia.
Abstract:
Network traffic has expanded dramatically due to the Internet of Things’ (IoT) devices’ exponential expansion, making it difficult to manage load distribution and preserve performance in fog computing environments. The fog network can be controlled centrally via Software-Defined Networking (SDN) techniques; however they frequently fail in dynamic and heterogeneous environments. Despite its ability to lower latency in IoT networks, fog computing had to deal with needless switch migrations brought on by erratic traffic spikes in the various performance capacities of fog nodes. A hybrid strategy is presented that uses machine learning and threshold load detection to forecast traffic and reduce network interruptions, specifically focussing on pointless corrective operations that impair network performance. The results will be able to guide future developments in dynamic IoT network environments by increasing network efficiency and stability.
PLENARY speaker 2
Multiband Reflective Metasurface using Multiple Split Ring Resonators (SRRs)
Prof. Ts. Dr. MOHAMAD KAMAL A RAHIM
Professor at Faculty of Electrical Engineering, Universiti Teknologi Malaysia.
Abstract:
The multiband reflective metasurface proposes a unit cell design using multiple Split Ring Resonators (SRRs) that resonate at 8, 10, and 12 GHz. The proposed design employs an F4BMX220 substrate with a thickness of 1.5 mm as the dielectric substrate, featuring multiple SRRs on the top layer and a full ground plane on the bottom layer. The results show that the S11 magnitude is 0.94 at 8 GHz, 0.72 at 10 GHz, and 0.81 at 12 GHz, with the S21 magnitude being 0. The reflection phase is -32.2° at 8 GHz, -29.1° at 10 GHz, and -3.34° at 12 GHz. Overall, the results indicate good performance, with reflected power exceeding 50% at all desired frequencies.
PLENARY speaker 3
Calibration and Standardisation of High Precision Foreign Object Debris Detection Radar Sensor for Airport Runway Safety and Surveillance
Prof. Ir. Dr. SEVIA MAHDALIZA IDRUS SUTAN NAMEH
Professor at Faculty of Electrical Engineering, Universiti Teknologi Malaysia.
Abstract:
Foreign object debris (FOD) on airport runways can cause problems (e.g., runway closure, accidents) to airplanes and airport operators if not removed immediately. Hence, airport operators need to remove any FODs that are detected via a manual or automated FOD detection system. Manual detection implies that airport operators carry out periodical manual inspection while automated FOD detection is able to perform rapid detection continuously without any airport personnel on-site. Automated detection system also avoids unnecessary runway closure due to manual inspection, which is inefficient for busy airport operation. Millimeter-wave radar sensor proof to be an efficient method on detecting small FOD automatically, due to its high-sensitivity, high-range resolution and weather robustness. In this talk, successful collaborative Malaysia and Japan research project on Foreign Object Debris Detection System (FODDS) field trial at Kuala Lumpur International Airport will be presented. The system currently under field trial in accordance to the International Civil Aviation Organization (ICAO), Aerodrome Design and Operation. The field trial and operation of FODDS was established in collaboration with National Institute of Information and Communication (NICT), Japan, Hitachi Kokusai Electric Inc (HiKE), Japan and Malaysia Airport (Sepang) Sdn Bhd, Malaysia Airports Holding Berhad (MAHB) supported by Ministry of Internal Affairs and Communication Japan. Through more than three year field trial at KLIA, the system demonstrated highly accurate and fast, the system is able to detect 3cm FOD within the range of 500 meters in 10 seconds by using the millimeter wave radar sensor. The FOD detection systems is able to spot FOD the moment it is deposited on the runway by radar sensing, identifying, and locating at a previously unprecedented level of speed and accuracy for objects as small as an aircraft rivet. This is extremely valuable when aircraft take-offs are only minutes apart. Finally improved airport management by not only increases efficiency, enhances safety and improves security, but also saves airports and airlines operational cost. This FODDS will be a promising candidate to enhance security against intruders or attack drones in important facilities and to enhance safety to avoid critical incident in the airport runways.
PLENARY speaker 4
Design and Characterization of Reconfigurable Fractal Microstrip Antennas below 10 GHz
Prof. Dr.-Ing. MUDRIK ALAYDRUS
Professor at Electrical Engineering, Universitas Mercu Buana, Jakarta.
Abstract:
Fractal antennas have the capability to work in different frequency bands. Embedding PIN diodes as switching elements to the antennas enables reconfigurability of the antennas. In this work we proposed a simple reconfigurable T-form Pythagorean-tree fractal microstrip antenna. The reconfigurable fractal antenna was simulated and fabricated on a 1.4 mm thick FR4 substrate with six PIN diodes connected inside. The computer simulation showed for several on-off diode conditions, different following resonant frequencies 1.52 GHz, 3.98 GHz, 4.23 GHz, 4.96 GHz, 5.12 GHz, and 7.56 GHz to 9.1 GHz. The calculated radiation patterns showed symmetrical or tilted directional characteristics depending on symmetrical or unsymmetrical on-off cases. Measurements confirmed the calculated results.
PLENARY speaker 5
Cutting-Edge Reconfigurable Intelligent Surface (RIS) Designs Developed for Controlling the Wireless Propagation Environment
Prof. Dr. MOHSEN KHALILY
Associate Professor at Institute for Communication Systems University of Surrey, United Kingdom.
Abstract:
This talk will present the cutting-edge Reconfigurable Intelligent Surface (RIS) designs developed for controlling the wireless propagation environment. Through theoretical analysis, extensive simulations and accurate fabrication, we have evaluated the performance of reflective, transmissive, and Simultaneous Transmissive and Reflective (STAR) surfaces in key wireless communication environments. The findings of each configuration offer unique advantages in signal characteristics according to each deployment context. This work not only underscores the versatility of RIS technology but also delivers beneficial insights into deciding the proper RIS configuration based on application requirements. In this talk different reconfigurable intelligent surgace prototype for communication, computing and sensing will be presented and discussed.
PLENARY speaker 6
Circular Patch Antenna Employing Annular Slot DGS (Defected Ground Structure)
Prof. Ir. Dr. SHARUL KAMAL ABDUL RAHIM
Professor at Faculty of Electrical Engineering, Universiti Teknologi Malaysia.
Abstract:
This paper presents a circular patch antenna that enhanced efficiency by employing annular slot DGS (defected ground structure). The proposed antenna consists of an inset-fed circular radiation mounted on the top surface of 1.6 mm thick FR4 lossy substrate. At the substrate’s bottom side, an annular slot-loaded DGS is added in an effort to enhance the antenna efficiency. This compact antenna design works at 3.5 GHz with a fractional bandwidth (FBW) of 7.3%, operating between 3.38 GHz to 3.63 GHz. The proposed circular patch antenna offers a high efficiency exceeding 60%, without sacrificing the antenna gain.
PLENARY speaker 7
A Novel Reconfigurable HMSIW Antenna Design for Beam-Steering and Fixed-Bandwidth Applications
Prof. Dr. MOHAMED HIMDI
Professor at Universite de Rennes ,IETR
Abstract:
This paper presents a unified design combining two state-of-the-art reconfigurable Half-Mode Substrate Integrated Waveguide (HMSIW) antennas. The first design focuses on beam steering at a fixed frequency using varactor diodes, while the second integrates advanced field-programmable microwave substrates (FPMS) for fixed beam directions over a wide bandwidth. This work demonstrates the feasibility of combining these capabilities into a single antenna system, paving the way for more versatile applications in modern wireless communication.
PLENARY speaker 8
Electromagnetic Selective Structures: Concept and Design
Prof. Dr. ZHONGXIANG SHEN
Professor at Nanyang Technological University, Singapore
Abstract:
In this talk, we intend to provide a brief overview of electromagnetic selective surfaces/structures (EMSS). According to the properties of an incident electromagnetic wave, EMSS can be divided into four categories: frequency-selective structure (FSS), polarization-selective surface (PSS), angle-selective surface (ASS), and energy-selective surface (ESS). Recent developments and advances in the design of EMSS will also be briefly introduced. Finally, future opportunities in the areas of the design and analysis of EMSS will be suggested.
PLENARY speaker 9
Application of Electromagnetic Simulations for Antenna Analysis
Prof. Dr. YOSHIHIDE YAMADA
Professor at Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia
Abstract:
Recently electromagnetic (EM) simulations become very reliable and are conveniently used for antenna design, analysis and evaluation. Especially, the ability of visualization of physical appearances of electromagnetic performance at antennas is useful. In this presentation, firstly EM simulation methods are overviewed. Next, check point for obtaining correct simulation results of antenna performances are summarized. As a main part, effects of visualization are shown. Examples such as derivation of new structural equations at small wire antennas, analysis of lens antennas having positive and negative refractive index, reflector antenna performance and under water radio propagation are shown. Additionally, high speed calculation method for radar cross section calculation is shown.
PLENARY speaker 10
Design a Triple V-Slit Rectangular Patch with Asymmetric CPW Microstrip Antenna for Future Microwave Applications
Prof. Ir. Dr. BADRUL HISHAM AHMAD
Professor at Faculty of Electronics and Computer Technology and Engineering, Universiti Teknikal Malaysia Melaka
Abstract:
In this work, the proposed triple v-slit rectangular patch with asymmetric CPW microstrip antenna is designed to exhibit broad bandwidth, enabling an accurate future microwave applications system that has optimal functionality at an operating frequency of 586 MHz with – 62.404 dB. The design process involves optimizing key parameters such as antenna dimension and coplanar waveguide (CPW), simulated in CST Microwave Studio.