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A Low-Cost Wideband MIMO Antenna for IoT Applications

A Low-Cost Wideband MIMO Antenna for IoT Applications

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2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022

作者： Din, Iftikhar Ud Kiyani, Arslan Naqvi, Syeda Iffat Jamal Abdullah Al-Gburi, Ahmed Abbas, Syed Muzahir Ullah, Sadiq University of Engineering & Technology Telecommunication Engineering Department Mardan Pakistan Macquarie University School of Engineering Faculty of Science and Engineering SydneyNSW2109 Australia University of Engineering & Technology Telecommunication Engineering Department Taxila Pakistan Universiti Teknikal Malaysia Melaka Department of Electronics and Computer Engineering Durian Tunggal Malaysia

ISBN: (数字)9781665496582

ISBN: (纸本)9781665496582

This work presents a two-element multiple-input multiple-output (MIMO) antenna for IoT applications. A single antenna element is designed with wideband characteristics covering 4.2 to 7.5 GHz and is arranged in a perpendicular configuration to realize MIMO structure. The proposed design configuration exhibits good isolation without using decoupler with 47% fractional bandwidth and gain up to 5.1 dB. The presented structure has acceptable values for Envelope Correlation Coefficient (ECC), Diversity Gain (DG) and good isolation less than-26 dB. Being a low-cost solution, proposed design is suitable candidate for IoT application operating in 4-7.8 GHz, in particular, for 5-6 GHz, 4.70-6.19 GHz and 5.5-5.7 GHz operating bands. © 2022 IEEE.

关键词： Costs

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Antipodal Vivaldi Antenna with Dielectric Lens for Biomedical Imaging Applications

Antipodal Vivaldi Antenna with Dielectric Lens for Biomedica...

引用

2022 Research, Invention, and Innovation Congress: Innovative Electricals and Electronics, RI2C 2022

作者： Thaiwirot, Wanwisa Kamoldej, Dechawat Detchporn, Phongsapuk Thongdit, Preecha Tangwachirapan, Shalermchon King Mongkut's University of Technology North Bangkok Department of Electrical and Computer Engineering Faculty of Engineering Bangkok Thailand Nakhon Pathom Rajabhat University Faculty of Science and Technology Department of Telecommunication Engineering Nakhon Pathom Thailand

ISBN: (数字)9781665473248

ISBN: (纸本)9781665473248

This paper presents the antipodal Vivaldi antenna (AVA) with dielectric lens. The AVA which efficiently focuses the energy toward the end-fire direction is required for biomedical applications. For this purpose, the various shapes of dielectric lens i.e., rectangular, triangular, trapezoid, sine, and elliptical-shaped dielectric lens as an extension of dielectric substrate are proposed. The effects of different dielectric lens shapes on enhancement of the gain and electric field in near field region are investigated. In order to confirm the validate in the designing, the AVA with elliptical dielectric lens is fabricated with the dimension of 45 mm × 90 mm. The measured results show that the proposed antenna can provide wide impedance bandwidth, covering the frequency range from 3.06 GHz to over 10 GHz. The proposed antenna has a maximum gain of 13.18 dBi at 10 GHz. © 2022 IEEE.

关键词： Electric fields

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Enhancing Antenna Gain and Radiation Patterns Through the Investigation of Chiral Metamaterials 12

Enhancing Antenna Gain and Radiation Patterns Through the In...

引用

12th International Electrical engineering Congress, iEECON 2024

作者： Malathong, Kritthanit Konpang, Jessada Sonsilphong, Amornthep Krongtripop, Thammakorn Chomtong, Pongsathorn Thitimahatthanakusol, Phatsakul Rajamangala University Of Technology Krungthep Faculty Of Engineering Department Of Electrical And Telecommunication Engineering 2 Nanglingee Rd. Sathorn Thungmahamek Bangkok10120 Thailand Rajamangala University Of Technology Faculty Of Engineering Department Of Electrical Engineering Isan Khon Kaen campus 150 Srichan Rd. Mueang Nai-muang Khon Kaen40000 Thailand Rajamangala University Of Technology Isan Faculty Of Engineering And Technology Department Of Computer Engineering 744 Sura Narai Rd Mueang Nakhon Ratchasima Nakorn Ratchasima Nai Mueang30000 Thailand Faculty Of King Mongkut's University Of Technology North Bangkok Department Of Electrical Department Of Teacher Training In Electrical Engineering Bangkok Thailand Rajamangala University Of Technology Isan Faculty Of Engineering And Technology Department Of Telecommunication Engineering 744 Sura Narai Rd Mueang Nakhon Ratchasima Nakorn Ratchasima Nai Mueang30000 Thailand

ISBN: (纸本)9798350383591

The determination of chirality in materials, a crucial parameter in electromagnetic research, is explored in this study. Chirality, as elucidated by Equation 9, hinges on the refractive index (n), setting it apart from traditional n value determination. The investigation necessitates the assessment of both circularly polarized waves, CPR and CPL, as opposed to linearly polarized waves, involving the placement of materials in their path. Subsequently, n values for CPR and CPL are ascertained and applied in Equation 9 to compute the chirality of the material. Our research delves into methodologies for extracting epsilon (?), mu (µ), impedance (z), and refractive index (n), culminating in the development of a program for their computation via S-Parameters, fundamental data stemming from simulations or measurements. The program's practical utility is demonstrated through validation with air, yielding results congruent with air's inherent properties. This substantiates the program's efficacy in accurately determining diverse material properties. © 2024 IEEE.

关键词： Refractive index

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Bangla Text Summarization Analysis Using Machine Learning: An Extractive Approach 1

引用

2nd International Human engineering Symposium, HUMENS 2023

作者： Rahman, Mizanur Debnath, Sajib Rana, Masud Murad, Saydul Akbar Muzahid, Abu Jafar Md Rashid, Syed Zahidur Gafur, Abdul Faculty of Computing Universiti Malaysia Pahang Al-Sultan Abdullah Pahang Pekan26600 Malaysia Department of Computer Science and Engineering United International University Dhaka Bangladesh Information and Communication Engineering Noakhali Science and Technology University Noakhali Bangladesh Department of Electronic and Telecommunication Engineering International Islamic University Chittagong Chittagong Bangladesh

ISBN: (数字)9789819968909

ISBN: (纸本)9789819968893

A notable expansion of information in digital space provides quick access to these massive amounts of news, literature, and so on. Although maximum news is available in English, people are interested in reading in their language. Almost all Bangla newspapers now have their online version, so people prefer to read newspapers online. Without reading the whole news, it is not possible to obtain significant information and a summary from a news article. A news summary is a process of extracting the most significant information from a news article in a precise manner. In this case, we require an effective Bangla text summarizer tool to get insight from the news easily. Text summarizers use linguistic methods to generate and interpret text before uncovering natural concepts and phrases to represent the content by compressing the original text document into a shorter text that contains the most relevant information. Summarizing lengthy and important text by enforcing specific guidelines is a challenging task. Therefore, a method based on intelligent machine learning is widely anticipated in this content. This paper uses extractive automatic text summarization techniques to condense the source text into a shorter version by preserving the significant information of the original text. Here we have adopted two machine learning-based techniques (i.e., word2vec, and similarity matrix) and a rule-based technique (word count) for Bangla text summarization. The results show that the word2vec technique performs very well compared to the summary performed by other techniques. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Machine learning

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Preferences for Using Canva Apps as a Presentation Media Creation Tool Among Gen Z Students: SEM Analysis with TAM and UTAUT2 Approaches 25

Preferences for Using Canva Apps as a Presentation Media Cre...

引用

25th International Seminar on Intelligent Technology and Its Applications, ISITIA 2024

作者： Maulana, Fairuz Iqbal Lestari, Dian Purnomo, Agung Arifuddin, Rahman Widartha, Vandha Pradwiyasma Adi, Puput Dani Prasetyo Bina Nusantara University School of Computer Science Computer Science Department Jakarta11480 Indonesia Faculty of Medicine Airlangga Surabaya60132 Indonesia Bina Nusantara University Binus Business School Undergraduate Program Entrepreneurship Department Jakarta11480 Indonesia University of Merdeka Malang Department of Electrical Engineering Malang Indonesia Telkom University Information System of Industrial Engineering Faculty Bandung Indonesia Research Center for Telecommunication Bandung Indonesia

ISBN: (纸本)9798350378573

The purpose of this study is to find out what makes Generation Z students accept and use Canva as a tool for making presentation materials. The conceptual framework of this study is the combination of "Technology Acceptance Model (TAM)"and the "Unified Theory of Acceptance and Use of Technology (UTAUT2)". "Structural Equation Modeling (SEM)"used for data analyzation. This research aims to understand the dynamics of Canva acceptance among students. The findings show that enjoyment, fun, and pleasure in using Canva, combined with its creative tools and design-centric approach, significantly resonate with Gen Z's preference for aesthetics. This research highlights that Canva is favored by students for creating engaging presentations. © 2024 IEEE.

关键词： Students

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TAQWA: Teaching Adolescents Quality Wadhu/Ablution Contactlessly using Deep Learning 6

TAQWA: Teaching Adolescents Quality Wadhu/Ablution Contactle...

引用

6th International Conference on Signal Processing and Information Security, ICSPIS 2023

作者： Hameed, Hira Lubna, Lubna Ghadban, Nour Usman, Muhammad Arshad, Kamran Assaleh, Khaled Alkhayyat, Ahmed Imran, Muhammad Ali Abbasi, Qammer H. James Watt School of Engineering Glasgow United Kingdom Telecommunication Engineering Dept. Uet Peshawar Pakistan Faculty of Engineering and It Ajman United Arab Emirates Department of Computer Technical Engineering Najaf Iraq Glasgow Caledonian University Glasgow United Kingdom Ajman United Arab Emirates

ISBN: (纸本)9798350329599

This research presents a unique and innovative approach to teaching young children the proper steps of ablution (wazoo/wudu) by utilizing a non-invasive sensing system integrated with deep learning algorithms. However, most existing ablution detection systems rely on cameras, which raise privacy concerns, face challenges with lighting conditions, and require complex training with long video sequences. We conducted experiments with a group of youngsters to evaluate the system's effectiveness, demonstrating its potential in fostering a deeper appreciation and comprehension of religious practices among young learners. This innovative privacy-preserving ablution system employs state-of-the-art UWB-radar technology with advanced Deep Learning (DL) techniques to effectively address the challenges mentioned above. The core focus of this system is to categorize the four fundamental ablution steps: Wash Face 3x, Wash Hand 3x, Wash Head 1x, and Wash Feet 3x. By transforming the collected data into spectrograms and harnessing the sophisticated DL models VGG16 and VGG19, the proposed system accurately detects these ablution steps, achieving an impressive maximum accuracy of 97.92% across all categories with the utilization of VGG16. © 2023 IEEE.

关键词： Learning algorithms

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Design of Vivaldi Array Antenna for Hydrogen Line Observation and Weather Radar Application

Design of Vivaldi Array Antenna for Hydrogen Line Observatio...

引用

2023 International Electrical engineering Congress, iEECON 2023

作者： Rakluea, Chawalit Loedhammacakra, Wisit Duangrit, Nattapong Sarris, Spiro George Tantiparimongkol, Lalida Lee, Wilaiporn Rajamangala University of Technology Thanyaburi Department of Electronics and Telecommunication Engineering Pathumthani Thailand Centre of Observatory Operation and Engineering National Astronomical Research Institute of Thailand Chiangmai Thailand King Mongkut's University of Technology North Bangkok Faculty of Engineering Department of Electrical and Computer Engineering Bangkok Thailand

ISBN: (纸本)9798350332360

A low cost and low profile 2 × 2 Vivaldi array antenna is designed and developed to observe and detect the 1.42 GHz hydrogen line emission from the space. Firstly, the single element of Vivaldi antenna is designed at operating frequency of 1.42 GHz which obtains the directional pattern with the average gain around 4 dBi. To achieve high gain and decrease HPBW, the 2 × 2 Vivaldi array antenna is introduced and each element receives signal through 1 to 4 Wilkinson power divider. The proposed array antenna obtains 60 deg-HPBW with low side lobe level. Moreover, the average gain is around 9.5 dBi for measurement with the clear properties of linear polarization. Finally, the proposed Vivaldi array antenna is going to apply and employ as receiver for hydrogen line spectrum and also weather radar application. © 2023 IEEE.

关键词： Meteorological radar

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Novel Bandpass and Periodic Frequency Responses in Non-Metallic Dielectric Metamaterials 12

Novel Bandpass and Periodic Frequency Responses in Non-Metal...

引用

12th International Electrical engineering Congress, iEECON 2024

作者： Malathong, Kritthanit Konpang, Jessada Boonthum, Direk Akkaraekthalin, Prayoot Chudpooti, Nonchanutt Thitimahatthanakusol, Phatsakul Rajamangala University Of Technology Krungthep Faculty Of Engineering Department Of Electrical And Telecommunication Engineering 2 Nanglingee Rd. Sathorn Thungmahamek Bangkok10120 Thailand Rajamangala University Of Technology Krungthep Division Of Physics Faculty Of Science And Technology 2 Nanglingee Rd. Sathorn Thungmahamek Bangkok10120 Thailand Department Of Electrical And Computer Engineering Faculty Of Engineering King Mongkut's University Of Technology North Bangkok 1518 Pracharat 1 Road Bangsue Bangkok10800 Thailand King Mongkut's University Of Technology North Bangkok Faculty Of Applied Science Department Of Industrial Physics And Medical Instrumentation Bangkok10800 Thailand Rajamangala University Of Technology Isan Faculty Of Engineering And Technology Department Of Telecommunication Engineering 744 Sura Narai Rd Nai-muang Mueang Nakhon Ratchasima Nakorn Ratchasima30000 Thailand

ISBN: (纸本)9798350383591

This study explores the remarkable properties of the Box-Ball Structure (BBS) within the 1GHz to 50GHz frequency range. The BBS structure demonstrates consistent bandpass frequencies with a periodic response and maintains a uniform 2.058GHz bandwidth at S11 = -6dB. Unlike metal-based structures, where changing C and L values can lead to frequency-dependent responses, the dielectric BBS structure exhibits stability. Its dielectric properties, including epsilon, mu, and refractive index (n), remain largely unaffected by frequency variations. Furthermore, the BBS structure is found to induce capacitance (C), as per the principles of virtual circuit theory, making it suitable for band-pass filter applications. The liquid state of epoxy resin allows for versatile structural designs, such as a hollow cylinder for omnidirectional antenna signal filtration. This research introduces the BBS as a dielectric resonator with unique properties and potential applications in various industries, particularly in the mobile phone sector. © 2024 IEEE.

关键词： Capacitance

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Predicting Dota 2 Game Period Winners Through Hero Analysis

Predicting Dota 2 Game Period Winners Through Hero Analysis

引用

International Electrical engineering Congress (iEECON)

作者： Chanwit Musika Kritthanit Malathong Chananate Arthayukti Jessada Konpang Boonchuay Jarernpon Phatsakul Thitimahatthanakusol Department of Computer Science Faculty of Science and Technology Rajamangala University of Technology Krungthep Bangkok Thailand Department of Electrical and Telecommunication Engineering Faculty of Engineering Rajamangala University of Technology Krungthep Bangkok Thailand Department of Telecommunication Engineering Faculty of Engineering and Technology Rajamangala University of Technology Isan Nakorn Ratchasima Thailand

ISBN: (数字)9798350383591

ISBN: (纸本)9798350383607

The impact of hero selection on game outcomes is well-recognized, with input from respected streamers and commentators who emphasize the significance of hero choices. These insights, supported by substantial followers and views, underscore the importance of astute hero selection. However, hero selection is not straightforward due to factors like player proficiency and team strategy. While extensive game data allows us to gauge hero performance, practical challenges exist. To address these, a method for real-time outcome prediction based on hero selection is introduced. This approach includes an interface for hero selection, displays sections for hero information, and identifies both winning and losing heroes. The method also calculates and displays the financial advantage in-game, a crucial factor, and adapts to evolving patches, ensuring its reliability and accessibility to players.

关键词： Electrical engineering Navigation Heuristic algorithms Decision making Games Prediction algorithms Dynamic scheduling

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Twin-Array Quasi FSS Reflector with Dual Band Cross-Dipole for 5G Base Station Antenna Application

Twin-Array Quasi FSS Reflector with Dual Band Cross-Dipole f...

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2023 International Conference on Power, Energy and Innovations, ICPEI 2023

作者： Santos, Ian Jerome Q. Tangjitjetsada, Maleeya Rakluea, Paitoon Wongsin, Norakamon Rakluea, Chawalit Mahatthanajatuphat, Chatree Chudpooti, Nonchanutt Thianthong, Tawan Rajamangala University of Technology Thanyaburi Faculty of Engineering Department of Electronics and Telecommunication Engineering Thanyaburi Pathum Thani 12110 Thailand Rajamangala University of Technology Suvarnabhumi Faculty of Engineering and Architecture Department of Electronics and Telecommunication Engineering Nonthaburi Thailand King Mongkut's University of Technology North Bangkok Faculty of Engineering Department of Electrical and Computer Engineering Wongsawang Bangsue Bangkok10800 Thailand King Mongkut's University of Technology North Bnagkok Faculty of Applied Science Department of Industrial Physics and Medical Instrumentation Wongsawang Bangsue Bangkok10800 Thailand Siam Airport Ground Service Co. Ltd. Don Mueang Bangkok10210 Thailand

ISBN: (纸本)9798350344585

This article provides an explanation of the use of a Twin-Array Quasi Frequency Selective Surface (FSS) Reflector with Dual Band Cross-Dipole for antenna applications in 5G base stations. The base material employed in this study is FR4 sheet, which has a dielectric constant (ϵr) of 4.3. The antenna obtained has dimensions of 100x100 mm2 and functions throughout the frequency spectrum spanning from 730 to 860 MHz, 1700 to 2130 MHz. The primary benefits of this antenna design are its lightweight structural composition, compatibility with the frequency range of 730-860 MHz, and discernible performance attributes. The CST Studio Suite software was used to conduct a simulation of the antenna's performance. The antenna has an operating frequency range of 730-860 MHz and 1700-2130 MHz, enabling it to support a unidirectional wave propagation pattern that is suitable for the implementation of a 5G mobile communication base station. © 2023 IEEE.

关键词： Dipole antennas

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