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International Conference on Microwaves, Radar and Wireless Communications

作者： Hubert Hanusiak Rafal Lech Faculty of Electronics Telecommunications and Informatics Gdańsk University of Technology Gdańsk Poland PIT-RADWAR S.A Warsaw Poland

ISBN: (数字)9788396972613

ISBN: (纸本)9798350371611

In this paper a linear antenna array utilizing sector radiation pattern is presented. The Fourier transform method is used for synthesis, from which the obtained excitation coefficients determine the resultant radiation pattern for an arbitrary sector. Moreover, the influence of a single radiating element radiation pattern is considered which is used to act as a counterweight to compensate the degradation which occur at the sector boundaries, by modifying the array factor. Theoretical examples for this phenomenon are presented, whereas for the purpose of this paper a nine-element linear array with 90° sector was designed and manufactured in order to verify this concept.

关键词： Microstrip antenna arrays Fourier transforms Radar Microstrip antennas Radar antennas Microwave theory and techniques Microwave antenna arrays

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MTM-Inspired Beam-Steerable SWB Smartphone Antenna Array for 5G/6G Cellular Communications

MTM-Inspired Beam-Steerable SWB Smartphone Antenna Array for...

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2024 International Telecommunications Conference, ITC-Egypt 2024

作者： Basherlou, H.J. Parchin, N.O. Amar, Ahmed S. I. Muhammad, A.M. See, C.H. Abd-Alhameed, R. School of Computing Engineering and the Built Environment Edinburgh Napier University Edinburgh United Kingdom Air Defense College Alexandria University Department of Electronics and Communication Alexandria Egypt University of Bradford Faculty of Engineering and Informatics BradfordBD7 1DP United Kingdom

ISBN: (纸本)9798350351408

Phased arrays with broadband and super-wideband (SWB) capabilities, featuring extensive scanning and end-fire radiations, are imperative to meet the evolving demands of future cellular systems. This paper explores the properties of a new design, incorporating low-profile and SWB resonators tailored for advanced 5G communications. Its methodology is uncomplicated and executed seamlessly on the mainboard of prospective mobile handsets. The design comprises eight MTM-inspired dipole resonators arranged in a 1 ×8 linear configuration. Covering a broad frequency band from 23 to 45 GHz with a -10 dB threshold, this design spans multiple bands within the 5G and 6G spectra. Beyond the straightforward design process, the phased array's intrinsic features aim to address the multifaceted requirements of future wireless systems. © 2024 IEEE.

关键词： 5G mobile communication systems

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Biodegradable and Water-Soluble DEG1 Substrate for Printed Circuit Board Applications

Biodegradable and Water-Soluble DEG1 Substrate for Printed C...

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IMAPS Nordic Conference on Microelectronics Packaging (NordPac)

作者： Hajdu István Hamadeh Amír Lajter Péter Tamás Géczy Attila Department of Electronics Technology Faculty of Electronic Engineering and Informatics Budapest University of Technology Budapest Hungary Degraway Technologies Kft Algyö Hungary

ISBN: (数字)9789189896932

ISBN: (纸本)9798350355536

This paper presents a novel substrate for sustainable microelectronics applications in printed circuit board (PCB) rigid substrate technology. DAT1 is a biodegradable, water-soluble, non-polymer insulating material that may alternatively replace current rigid PCB dielectric materials in selected applications. We present the process of preparing conductor tracks on the boards with thick-film technology and subtractive laser processing of laminated copper. We investigate the surface roughness, present peel-testing results, and basic assembling approaches (based on surface mounting) with low-temperature reflow soldering (LTS with SnBiAg-based alloy). We present water moisture tests with water solubility analysis. It was found that conductive patterns can be created on the surface using conventional copper layer and thick-film printing technologies. Components can be joined by conductive adhesive or low-temperature (SnBi) alloys, with profiles maximized at 150 °C. DAT1 and Cu foil structures can be laminated, forming a pre-preg basis. Laser etching of the substrate is achievable. The obtained peel force is currently 0.6-0.7 N/mm, below the accepted values based on Flame Retardant Class 4 technology, but in line with similar substrates. Surface roughness was recorded between 0.84 and 1,2 μm. The composition of the substrate surface did not change after the reflow heating. Moisture absorption resulted in ~15% after 75 hours. Water degradability was presented qualitatively after ~24 hours of degradation.

关键词： Degradation Printing Printed circuits Surface emitting lasers Surface roughness Rough surfaces Copper

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Study on AR Application Efficiency of Selected iOS and Android OS Mobile Devices 18

Study on AR Application Efficiency of Selected iOS and Andro...

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18th International Conference on Web Information Systems and Technologies, WEBIST 2022

作者： Zamlyńska, Monika Lasota, Adrian Debita, Grzegorz Falkowski-Gilski, Przemyslaw Faculty of Management General Tadeusz Kosciuszko Military University of Land Forces Czajkowskiego 109 Wroclaw51-147 Poland Faculty of Electronics Telecommunications and Informatics Gdansk University of Technology Narutowicza 11/12 Gdansk Poland

ISBN: (纸本)9789897586132

Currently, the number of scenarios for using AR (Augmented Reality) tools grows every year. Yet, there are still some open performance issues associated with this technology, related with the efficiency of the mobile device itself, including build-in components or the operation system. The purpose of this study was to investigate available augmented reality engines for mobile platforms. First, a review of current graphics and AR engines was conducted, based on which measurement aspects were selected taking into consideration the device performance. Next, we have performed a series of research studies, including different 3-dimensional AR modes and scenarios, both with and without a tag. The research was carried out using 4 mobile devices, with 3 of them running Android OS and 1 powered by iOS (with 2 different AR libraries). The performed tests and obtained results can aid any interested individual when choosing the right mobile device, as well as configuring the AR environment, for various UX (User Experiences). Copyright © 2022 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved.

关键词： Augmented reality

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Smartphone Phased Array with End-Fire/Broad-Side Radiation Mode Switching for 5G Communications

Smartphone Phased Array with End-Fire/Broad-Side Radiation M...

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2024 International Telecommunications Conference, ITC-Egypt 2024

作者： Basherlou, H.J. Parchin, N.O. Amar, A.S.I. Salama, A.G. See, C.H. Abd-Alhameed, R. School of Computing Engineering and the Built Environment Edinburgh Napier University Edinburgh United Kingdom Air Defense College Alexandria University Department of Electronics and Communication Alexandria Egypt University of Bradford Faculty of Engineering and Informatics BradfordBD7 1DP United Kingdom

ISBN: (纸本)9798350351408

This study explores a beam-steerable phased array tailored for 28 GHz 5G cellular cognitive networks, emphasizing extremely compact resonators and adaptable radiation patterns. The design includes eight altered T-shaped slot antenna resonators with multiple rectangular directors, linearly positioned atop a smartphone substrate made of RT5880 material. The incorporation of switches on the initial directors enables the phased array to fluidly transition between end-fire and broadside modes of radiation, offering varied coverage capabilities. The design of the proposed array achieves an impedance bandwidth ranging from 27 to 29 GHz, centering on a resonance frequency of 28 GHz. Additionally, the array demonstrates significant characteristics, such as precise radiation patterns and gain metrics. © 2024 IEEE.

关键词： Slot antennas

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Cost-Efficient Large-Scale Re-Design of Multi-Band Antennas Using Orthogonal Scaling Directions

Cost-Efficient Large-Scale Re-Design of Multi-Band Antennas ...

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European Conference on Antennas and Propagation, EuCAP

作者： Anna Pietrenko-Dabrowska Slawomir Koziel Faculty of Electronics Telecommunications and Informatics Gdansk University of Technology Gdansk Poland Engineering Optimization & Modeling Center Reykjavik University Reykjavik Iceland

Re-design of antenna systems to operate at different operating frequencies is a practically important yet challenging endeavor. In particular, it involves simultaneous tuning of multiple geometry parameters, which incurs considerable computational expenses when electromagnetic (EM) analysis (necessary to ensure reliability) is used. Further, if the target centre frequencies are distant from that of the already established design, global optimization might be required, which entails even higher costs. This work develops a novel and cost-efficient technique for multi-band antenna re-design. The key concept of our approach is identification of a set of orthogonal scaling directions, which allow for approximately independent relocation of individual center frequencies. Large-scale design adjustment along these vectors is interleaved with local tuning, executed to correct unavoidable scaling errors and to improve the primary performance parameters. The scaling and correction steps are iterated until convergence. The introduced framework has been validated using two microstrip antennas, both re-designed for target frequencies unattainable through traditional tuning techniques. The obtained results corroborate the ability of our algorithm to precisely control the operating conditions, as well as low running cost corresponding to just about 170 EM simulations of the antenna under design.

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Atomic Lifecycle for Cyber Threat Intelligence

Atomic Lifecycle for Cyber Threat Intelligence

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Information Security and Cryptology (ISCTURKEY), International Conference on

作者： Süleyman Muhammed Arikan Aynur Koçak Mustafa Alkan Computer Forensics Institute of Informatics Gazi University Ankara Turkiye Electrical and Electronics Engineering Faculty of Technology Gazi University Ankara Turkiye

ISBN: (数字)9798331533649

ISBN: (纸本)9798331533656

The utilisation of cyber threat intelligence provides a multitude of advantages in the assurance of security. A growing body of research is being published on the subject of cyber threat intelligence. However, the precise sequence of steps involved in the cyber threat intelligence life cycle remains unclear. The life cycle presented in each study is not consistent. Moreover, the transition from data to intelligence throughout the life cycle is not sufficiently delineated. The intelligence produced in many studies can be of different types. In our study, all existing lifecycles were examined and their naming approaches were analysed. The objective was to present a cyber threat intelligence life cycle that is as atomic as possible, with each step clearly expressed. This should facilitate a more rigorous comparison of studies in the existing literature on cyber threat intelligence. Furthermore, the life cycle can be utilised in new cyber threat intelligence studies. Researchers who aspire to implement best practices in their study are able to run more effective processes by following the life cycle.

关键词： Accuracy Cyber threat intelligence Security Best practices Standards

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New Elliptical Miniaturized Antenna Using Concentric Open Rings for UWB Applications

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Progress In Electromagnetics Research C 2023年 134卷 79-91页

作者： Sayad, Djamel Zebiri, Chemseddine Obeidat, Huthaifa Elfergani, Issa Amroun, Alaedine Palandoken, Merih Bouknia, Mohamed L. Zegadi, Rami Rodriguez, Jonathan University 20 Aout 1955 Skikda Skikda21000 Algeria Department of Electronics University of Ferhat Abbas Sétif-1- Sétif19000 Algeria Department of Communications and Electronics Engineering Faculty of Engineering Jerash University Jerash Jordan The Instituto de Telecomunicações Campus Universitário de Santiago Aveiro3810-193 Portugal School of Engineering and Informatics University of Bradford BradfordBD7 1DP United Kingdom Department of Electrical and Electronics Engineering Izmir Katip Celebi University Izmir Turkey

In this paper, a low-profile miniaturized microstrip monopole antenna with an overall size of 15 mm×20 mm×1.6 mm is developed and analyzed for Ultra-Wide Band (UWB) services. The proposed antenna is carefully designed, optimized, and analyzed using HFSS 15 simulation software. A prototype of the design is realized and experimentally tested as proof of concept. The results are discussed and compared with literature. They show attractive radiating features for UWB applications. The proposed antenna consists of an elliptical patch printed on a low-cost FR-4 epoxy substrate with a modified ground plane. To achieve UWB characteristics, elliptical rings are etched on the conducting patch, and the ground plane is modified by adding an inverted L shaped strip and creating a semi-elliptical slot in the partial ground opposite to the feed line. The achieved ultra-wide band ranges from 3.1 to 18.1 GHz (141.51%). © 2023, Electromagnetics Academy. All rights reserved.

关键词： Monopole antennas

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Super Wideband Phased Array with Bow-Tie Dipole Resonators for 5G/6G Cellular Communications

Super Wideband Phased Array with Bow-Tie Dipole Resonators f...

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2024 International Telecommunications Conference, ITC-Egypt 2024

作者： Parchin, Naser Ojaroud Ullah, Atta Amar, Ahmed Sayed Ismail Deraz, Shady A Elbaset, Mohamed A Abd-Alhameed, Raed A. School of Computing Engineering and the Built Environment Edinburgh Napier University Edinburgh United Kingdom University of Bradford Faculty of Engineering and Informatics BradfordBD7 1DP United Kingdom Air Defense College Alexandria University Department of Electronics and Communication Alexandria Egypt

ISBN: (纸本)9798350351408

To fulfill the sophisticated requirements of forthcoming cellular networks, phased arrays must possess broadband and super-wideband (SWB) capabilities, along with extensive scanning and end-fire radiation properties. This study delves into a novel design that integrates low-profile SWB resonators, specifically crafted for cutting-edge 5G telecommunications. The design approach is straightforward, allowing for easy implementation on the circuit boards of future mobile devices. It features eight bow-tie dipole resonators organized in a single row (1x8 linear configuration), covering an extensive frequency range from 25 to 41 GHz at a -10 dB threshold. This allows the design to encompass various bands within the 5G and upcoming 6G spectrums. The phased array design is not only easy to execute but also aligns with the complex needs of next-generation wireless technologies, showcasing its potential to significantly enhance communication systems. © 2024 IEEE.

关键词： 5G mobile communication systems

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Impact of energy leakage on the energy performance of green IoT nodes

Impact of energy leakage on the energy performance of green ...

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International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS)

作者： Godlove Suila Kuaban Tadeusz Czachórski Erol Gelenbe Piotr Pecka Valery Nkemeni Piotr Czekalski Polish Academy of Sciences (IITiS PAN) Institute of Theoretical and Applied Informatics Gliwice Poland Laboratory of Electrical Engineering and Computing Faculty of Engineering and Technology University of Buea Cameroon Faculty of Automatic Control Electronics and Informatics Silesian University of Technology Gliwice Poland

ISBN: (数字)9798331531300

ISBN: (纸本)9798331531317

In the present paper, we investigate the impact of imperfections (non-idealities) of the energy storage system (e.g., batteries, capacitors, or supercapacitors) on the energy performance of green IoT nodes. In particular, we investigate the impact of energy leakage from the Energy Storage System (ESS) on important energy performance metrics, such as service outage probability, the density of the lifetime of the node, and the time-dependent mean number of energy packets (EPs) in the ESS. Also, we explore various strategies that can be employed to compensate for the impact of energy losses due to energy leakage on the energy performance metrics. Specifically, we examine two potential strategies for improving the energy performance of the IoT nodes: (i) through increasing the energy generation rate of the energy harvesters (e.g., by adding additional solar panels or replacing the existing solar panels with more efficient ones that can produce more energy), and (ii) through reducing the energy consumption rate of the IoT node (e.g., by configuring ESS energy thresholds below which the nodes are forced to operate in low energy consumption states).

关键词： Measurement Energy consumption Green products Production Probability Energy efficiency Sensors Power system reliability Solar panels Internet of Things

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