| AP Technical Meeting Series 2/24 | |
| Date | 5 March 2024 (Tuesday) 10 am – 2 pm |
| Topics | Antenna and Propagation |
| Place | Hybrid Session Physical: Main Conference Room, Block E1, Kulliyyah of Engineering, International Islamic University of Malaysia (IIUM), Gombak Online: Google Meet Platform |
| Sponsors | IEEE Malaysia AP/MTT/EMC Joint Chapter |
| Registration | If you wish to join the AP Technical Meeting Series held online/hybrid style, please make your registration here, to get the meeting links and details. |
| 8:30 – 9:15 | Light Breakfast |
| 9:30 – 9:45 | Opening Ceremony 1. Recitation Doa 2. Welcoming Remarks from Head of Department, Electrical & Computer Engineering Department, Kulliyyah of Engineering, IIUM 3. Welcoming Remarks from Representative of AP Technical Meeting Committee |
| 9:45 – 10:30 |  Invited Speaker 1: Mr. Muadz M Zain, Petronas GTS PD&T Title: Sweating 5G – How 5G Unlocks Digital Acceleration for the O&G Industry Abstract: An exploration into the transformative potential of 5G technology in unlocking digital acceleration for the Oil and Gas (O&G) industry, with a focus on the pioneering efforts of PETRONAS. As PETRONAS embarks on a digital journey, we will delve into how 5G provides the essential connectivity coverage for PETRONAS plants, enabling a wide array of use cases. These use cases include providing connectivity to substations within the plants, enabling people tracking, facilitating smartphone devices, empowering productivity apps, enabling drone usage, and supporting the integration of IoT devices. Through this exploration, we will gain insights into the ways in which 5G technology is revolutionizing the O&G industry, driving digital transformation, and paving the way for unprecedented levels of efficiency and innovation. |
| 10:30 – 10:40 | Speaker 1: Mr. MD Abu Tayab Sakib (IIUM) Title: Design and development of body coupled antenna for biomedical applications Abstract: Current head imaging technologies, such as computed tomography (CT) and magnetic resonance imaging (MRI), can accurately diagnose brain injuries like stroke and brain tumors. However, they have several limitations, notably being bulky, expensive, taking a long time to scan, and mostly being stationary. A flexible body-coupled (co-planar waveguide) CPW-fed triangular planar monopole antenna (PMA) has been proposed which can be used for wide-band microwave sensing and imaging specifically for head imaging applications. The proposed antenna was made with advanced ceramic material barium titanate (BaTiO3) incorporated with silicone-based hyperplastic elastomer to synthesize a flexible body-matched impedance substrate with low loss. |
| 10:40 – 10:50 | Speaker 2: Mr. Mohamed Farouk Al Ghifarry (UTM) Title: Comparison of Multi Beam Characteristic of Positive and Negative Refractive Index Lens Antenna Abstract: An antenna lens with a negative refractive index (NRI), recognized for its slender profile compared to traditional lenses, is anticipated to demonstrate advantageous multi-beam characteristics. By conducting experiments with various refractive index (n) values, including √2 and -√2, we obtained focal region rays from the concave-plano lens, thereby determining the optimal feed positions. The findings of this study are deliberated upon, with the intention of future application to achieve an efficient multi-beam radiation pattern. |
| 10:50 – 11:00 | Speaker 3: Ms. Sadia Afroz (UNiMAP) Title: A Wearable Wideband Antipodal Vivaldi Antenna for 5G Applications Abstract: Body Area Networks (BANs) have achieved huge popularity in recent times. As a result, the demand for wearable antennas has also increased vividly. And the most recent version of wireless technology 5G offers a new set of networks with amazing facilities such as higher speeds, lower latency, and connecting ability with multiple devices at the same time. Considering these factors, in this proposed research work a wideband wearable antenna will be designed and developed for WBAN applications operating in 5G frequencies. Among two types of 5G frequency ranges (FR1- frequency range 1 and FR2 – frequency range 2) the proposed antenna is assigned to cover 5G FR1 bands (bands below 6 GHz). An antipodal vivaldi structure antenna was proposed for the purpose since vivaldi structured antenna provides very wideband performance. Afterward, modifications were made, and a ground stub was added to acquire the most desirable result through iteration. The antipodal antenna resonates at multiple frequencies and shows a bandwidth that covers the sub-6 GHz 5G frequency bands over 1 GHz. Besides, clothing material polyester is utilized for wearable application. Furthermore, since the antenna is wearable it requires to show excellent performance not only in free space but also near the human body. |
| 11:00 – 11:10 | Speaker 4: Ms. Liyaana Shahirah Binti Wan Abd Aziz (IIUM) Title: 4D Radar Imaging For Target Detection and Classification Using Deep-Learning Abstract: This project aims to develop an object detection and classification system for road crossings using 4D radar imaging which is powered by MIMO technology and deep-learning neural networks. It utilizes sensor data fusion from radar and mono camera to detect pedestrians, cars, buses, and trucks in urban areas. Keras and TensorFlow is used to developed the neural network, which aims to detect targets in long and wide-range road crossings. Data from both sensors is processed using DBSCAN and YOLOv7 for accurate classification and detection. |
| 11:15 – 12:00 |  Invited Speaker 2: Prof. Dr. Md. Rafiqul Islam, IIUM Title: Radio Wave Propagation and FSO Transmission Through Environments: Challenges and Mitigations Abstract: Effects of the earth’s atmosphere on Radio Wave propagation and Free Space Optic transmission are concerned in the design and performance of wireless communication systems. Due to high demand of spectrum, wireless communication designers are forced to explore higher and higher frequency bands. Ku, Ka and V-bands are currently employed in modern satellite systems with higher and higher bandwidth for very large channel capacities requirements. 5th Generation mobile communication for 2020 and beyond is proposing radio propagation at 50 GHz and above. However, operation of high frequencies is vulnerable to atmosphere and highly sensitive to tropospheric changes. Signal at Ku-band and above as well as FSO are severely attenuated by rain, sand, haze, etc and performance degraded seriously in those environments. In order to design and operate future high frequency terrestrial, earth-to-satellite and terrestrial-to-satellite radio links, suitable fade mitigation techniques must be adopted to meet satisfying availability and Quality of Service. This technical note summarizes recent development of propagation measurements through environments, its modelling and mitigation. |
| 12:00 – 12:10 | Speaker 5: Ms. Munirah Binti Mohamed Alias (UiTM) Title: Fragmented Configuration utilizing Binary Genetic Algorithm for UHF RFID tag antenna Abstract: This paper proposes a fragmented Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tag antenna design. A fragmented design is portrayed to enhance the conjugate matching between chip impedance and antenna impedance utilizing the Binary Genetic Algorithm (BGA) method. The substrate used is Rogers 5880 with a thickness of 1.57mm and a relative permittivity of 2.2. The chip used is NXP Ucode 8 with a chip impedance of 13-j191 Ω. The framework is implemented in MATLAB and verified by CST simulation software. In the proposed design, the resonant frequency is at 909MHz without a chip footprint, whereas with the inclusion of a chip footprint, the resonant frequency shifts to 917MHz. Profound results are obtained utilizing the BGA method with the chip footprint where the reflection coefficient (S11) is -21.11dB, maximum power transfer of 0.99, and antenna impedance of 11.08+j191.91 Ω. |
| 12:10 – 12:20 | Speaker 6: Dr. Touhidul Alam (UKM) Title: Nanosatellite antenna design and challenges Abstract: With the advent of modern technology, nanosatellites are flourishing a new dimension in space communication. The launch of the first nanosatellite in 2003 introduced a new era for scientific, private, and government missions, as well as the research interests of universities. To establish and maintain contact between the nanosatellite and Earth, the communication system plays a vital role and undoubtedly antennas are part and parcel of the communication system. The size and weight of the nanosatellite are two of the most crucial factors that have a profound impact on antenna type and design. Moreover, Antenna design for nanosatellites especially for lower frequency presents its own challenge and has been a critical issue due to sharing limited surface with solar cells. This presentation will demonstrate the nanosatellite antenna design challenges and their possible solutions. |
| 12:20 – 12:30 | Speaker 7: Mrs. Siti Zainab Binti Mohd Hamzah (IIUM) Title: Design of dual-linearly polarized antenna using DNN for beamstering applications Abstract: An extensive and wider research on millimeter-waves frequency bands are currently in rapid development throughout the world specifically at operating frequency of 28 GHz and Malaysia is no exception. The most conventional patch antennas covered a limited polarization feature of single polarization of radiated beam signals. In order to provide high demands of network users of higher data rate speeds, the radiated beam signals coverage should be as wide as possible to ensure the stability and consistency of received signals to the users. This leads to the development of dual polarization feature of antenna design into the scene. In this work, a 1×4 dual linearly polarized patch antenna with operating frequency of 28 GHz has been developed. Beam-steering capability has now become attractions to researchers as it promotes the mobility of network users without degrading the strength signals performance to the users. This antenna array with a built-in RF beamformer is used to steer the main beam into a desired location. An array analysis has been performed using feedforward deep neural network (DNN). The simulation and measurement results of antenna are shown. The feasibility and reliability of beam synthesis has been validated successfully. The possibility of radiation pattern measurement discrepancy, and the fabrication errors are also explained in this research. This dual polarized antenna with RF beamformer system can be applied in various application, particularly for mobile application. |
| 12:30 – 12:45 | Closing Ceremony 1. Closing Remarks from Prof. Dr. Yoshihide Yamada 2. Picture Session |
| 12:45 – 14:00 | Lunch/End |