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Defected Ground Structure Multiple Input-Output Antenna For Wireless Applications

Computer Systems Science & engineering 2023年第8期46卷 2109-2122页

作者： Ramya Sridhar Vijayalakshimi Patteeswaran Department of Electronics and Communication Engineering RF Microwave&Wireless Communication LaboratoryHindusthan Institute of TechnologyCoimbatore641028Tamil NaduIndia Department of Electronics and Communication Engineering Hindusthan College of Engineering&TechnologyCoimbatore641050Tamil NaduIndia

In this paper,the investigation of a novel compact 2×2,2×1,and 1×1 Ultra-Wide Band(UWB)based Multiple-Input Multiple-Output(MIMO)antenna with Defected Ground Structure(DGS)is *** proposed Electromagnetic Radiation Structures(ERS)is composed of multiple radiating *** MIMO antennas are designed and analyzed with and without *** feeding is introduced by a microstrip-fed line to significantly moderate the radiating structure’s overall size,which is 60×40×1 *** high directivity and divergence characteristics are attained by introducing the microstripfed lines perpendicular to each *** the projected MIMO antenna structures are compared with others by using parameters like Return Loss(RL),Voltage Standing Wave Ratio(VSWR),Radiation Pattern(RP),radiation efficiency,and *** same MIMO set-up is redesigned with DGS,and the resultant parameters are ***,the Multiple Input and Multiple Output Radiating Structures with and without DGS are compared for result considerations like RL,VSWR,RP,radiation efficiency,and *** projected antenna displays an omnidirectional RP with moderate gain,which is highly recommended for human healthcare *** introducing the defected ground structure in bottom layer the lower cut-off frequencies of 2.3,4.5 and 6.0 GHz are achieved with few biological effects on radio propagation in human body *** proposed design covers numerous well-known wireless standards,along with dual-function DGS slots,and it can be easily integrated into Wireless Body Area Networks(WBAN)in medical *** WBAN links the autonomous nodes that may be situated either in the clothes,on-body or beneath the skin of a *** system typically advances the complete human body and the inter-connected nodes through a wireless communication channel.

关键词： MIMO-multiple input multiple output defected ground structure WBAN-wireless body area networks ultra-wideband voltage standing wave ratio

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A compact dual-band frequency reconfigurable antenna with pin diode integration for smartwatch application

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International Journal of electronics Letters 2024年第4期12卷 403-412页

作者： Karthiga, B. Mahendran, C. Department of Electronics and Communication Engineering Alagappa Chettiar Government College of Engineering and Technology Karaikudi India

In this article, a novel frequency reconfigurable antenna for Wi-Fi and WiMAX applications is proposed. The antenna uses PIN diodes for frequency reconfigurability, allowing it to seamlessly switch between two distinct frequency bands centred around the resonant frequencies of 4.1 GHz in the ON state and 5.2 GHz in the OFF state. The input reflection coefficient obtained from the designed antenna is below −10 dB. The measured and simulated gain of the antenna is 4 dBi and 2.65 dBi at resonating frequencies 4.1 GHz and 5.2 GHz the measured and simulated gain is 3.2 dBi and 2.93 dBi, respectively. The radiation pattern exhibits the same for both states. Optimization of the antenna’s dimensional parameters is done with the help of CST simulation software and the electrical parameter such as input reflection coefficient is measured using a Vector Network Analyzer to validate the prototype. The proposed antenna is fabricated on FR-4 substrate material with a thickness of 1.6 mm and a relative permittivity of 4.4. The proposed antenna’s size is 30 × 30 × 1.6 mm³ which is compact and suitable for smartwatch applications. The proposed antenna is compact and remains a good candidate for integration with the smartwatch. © 2024 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Frequency reconfigurable antenna PIN diodes reconfigurable antenna wireless local area network worldwide interoperability for microwave access

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Advancing Emotion Detection through Dual-Channel EEG and Peripheral Physiological Signal Integration

Advancing Emotion Detection through Dual-Channel EEG and Per...

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2024 IEEE International Conference on Modeling, Simulation and Intelligent Computing, MoSICom 2024

作者： Roy, Sharon Band, Shreya Manish Ramesh, Preeti Bhavsar, Punitkumar Jac Fredo, Ar Kumar, Deepesh School of Biomedical Engineering Varanasi India National Institute of Technology Department of Electronics and Communication Engineering Tiruchirappalli India

ISBN: (纸本)9798331533311

Wearable devices often struggle to capture the full range of emotions accurately through peripheral physiological signals like Electrodermal Activity (EDA), Photoplethysmogram (PPG), and Electromyogram (EMG), leading to reduced classification accuracy. While Electroencephalogram (EEG) signals are recognized for their superior emotion detection capabilities, past EEG-based studies have been confined to lab settings with high-end systems using 32-64 channels. There is a growing need for systems that can continuously monitor emotions outside the lab. Modern wearable EEG devices, with configurations from single to eight channels, offer a solution. Our study investigates if integrating EEG data from only two channels in commercial wearable EEG devices with peripheral signals can enhance emotion detection accuracy. Using the publicly available DEAP dataset, which provides EEG and peripheral signals from 32 participants exposed to emotional stimuli, we explore various preprocessing and feature extraction techniques for multimodal emotion detection. The DEAP dataset categorizes emotions based on valence and arousal ratings, converting them into binary class problems: High Valence vs. Low Valence and High Arousal vs. Low Arousal. Intra-class emotion classification is performed using a Random Forest classifier with 5-fold cross-validation. Results show that while single-modality peripheral signals achieve classification accuracies of 76-85%, the addition of EEG data significantly boosts accuracy up to 9 5%. Combining EEG data with peripheral signals also greatly improves individual subject valence and arousal classification accuracy and F1 scores. © 2024 IEEE.

关键词： Emotion Recognition

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DIAGONALLY SYMMETRIC SLOTTED MICROSTRIP PATCH ANTENNA WITH CIRCULAR POLARIZATION FOR UHF TRANS-RECEIVER AND RFID SYSTEM

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Journal of technology 2023年第4期38卷 267-274页

作者： Srivastava, Shipra Gupta, Saptarshi Sachan, Vibhav Kumar Sai Srikant, Satya Department of Electronics and Communication Engineering SRM Institute of Science and Technology Modinagar201204 India Department of Electronics and Communication Engineering KIET Group of Institutions Ghaziabad201204 India

It has been observed that the polarized microstrip antenna is always an important factor for wireless communication applications. One of such antennas is very much useful for UHF trans-receiver for 4G / 5G technology and RFID applications. This paper proposes the simulation design of diagonally symmetric slotted polarized microstrip antenna at GSM frequency band especially in the range of 865 – 868 MHz. The simulated design was also fabricated. Two types of microstrip antennas were designed in which two diagonally symmetric squares and plus sign shapes were separately slotted from the each square microstrip antenna. The result so obtained from the designed antennas, provides the desired specifications which are useful for UHF wireless applications. The results from both the antennas show that the diagonally symmetric slotted shape not only provides the circular polarization but also provides better gain ranging between 4.45 dB to 4.6 dB, better return loss, axial ratio and VSWR. The specifications so mentioned perfectly match the guidelines of countries like India and most European Union countries. All the results obtained from the simulated and fabricated slotted shaped antennas were also compared in the present paper. © 2023, National Taiwan University of Science and technology. All rights reserved.

关键词： Microstrip antennas

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Compact penta-band metamaterial absorber: achieving polarization insensitivity and optimized bandwidth performance

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Optical and Quantum electronics 2024年第11期56卷 1-20页

作者： Singh, Neelam Dhara, Reshmi Yadav, Sanjeev Electronics and Communication Engineering National Institute of Technology Barfung Rd Sikkim Ravongla737139 India Electronics and Communication Engineering Central University of Jammu Jammu and Kashmir Samba181143 India

This article describes narrow penta-band metamaterial absorbers that are polarization-insensitive for multi-band frequency applications. The present absorber cell is made up of four resonators. These resonators are imprinted on the top section of double-sided epoxy glass FR-4 covered with copper and the depth of FR-4 is 1.6 mm. The presented absorber design produces five separate absorption peaks specifically, 92.7% (peak-1) at 2.7 GHz, 94% (peak-2) at 6.5 GHz, 93% (peak-3) at 9.4 GHz, 98% (peak-4) at 13.3 GHz and 98% (peak-5) at 15.5 GHz, respectively in the process of normal occurrence. Additionally, the arrangement of the absorber pattern provides above 90% absorption peaks at all angles of incidence (before 60∘) in equally transversal-electric and transversal-magnetic polarisation conditions. The ongoing development and exploration of metamaterial design hold great promise for achieving unprecedented control over electromagnetic wave absorption, thus opening up exciting opportunities for a wide range of practical applications. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.

关键词： Electromagnetic waves

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A survey on intelligence-endogenous network:Architecture and technologies for future 6G

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Intelligent and Converged Networks 2024年第1期5卷 53-67页

作者： Lanlan Li the School of Communication and Information Engineering Shanghai Technical Institute of Electronics&InformationShanghai 201141China

With the maturity of 5G technology and global commercialization,scholars in institutions and industrial circles began to research 6G *** important innovation of 6G technology is to integrate artificial intelligence(AI)technology and communication technology to build a highly endogenous intelligent communication *** paper investigates the process of AI technology introduced into the field of communication and reviews the use cases of the simulation and application of AI algorithms being discussed in 3GPP meetings in industry *** this research report,we first investigate the progress of AI technology in 5G network architecture and then discuss the requirements of endogenous intelligent 6G networks,which leads to the possible network *** work aims to provide enlightening guidance for subsequent research of intelligence-endogenous 6G network.

关键词： 5G 6G intelligence-endogenous artificial intelligence

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Millimetre Wave Self-Isolated MIMO Antenna with High Isolation and Radiation Efficiency 2

Millimetre Wave Self-Isolated MIMO Antenna with High Isolati...

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2nd International Conference on Intelligent Data communication Technologies and Internet of Things, IDCIoT 2024

作者： Thommandru, Raju Krishna, Ch Murali Suguna, N. Alamelu Alias Rajasree, S. Sathish, M. Kiran, K. Chalapathi Institute of Technology Department of Electronics and Communication Engineering Guntur India Rakon India Private Limited Bangalore India Vellore Institute of Technology Department of Electronics and Communication Engineering Vellore India Sri Ramakrishna Engineering College Department of Electronics and Communication Engineering Coimbatore India Rajalakshmi Engineering College Thandalam Department of Electronics and Communication Engineering Chennai India Vishnu Institute of Technology Department of Electronics and Communication Engineering Bhimavaram India

ISBN: (纸本)9798350327533

Four port multi element antenna geometry is proposed for 5G and millimetre (mm) wave frequencies. A key objective of the proposed antenna is to improve isolation and reduce mutual coupling between the antennas without the use of any additional approaches. The antenna is designed on 0.508mm Rogers 5870 substrate within compact size of 20mm*20mm. The designed antenna has the bandwidth of 10.27GHz from 33.76 to 44.03 GHz with fractional bandwidth (FBW) of 26.41% and isolation between antennas is greater than 43dB. The maximum gain and efficiency of the proposed antenna are 7.36 dB and 96.25%, respectively. Proposed Millimetre wave antenna is usable for Ka-band Q-band frequencies. © 2024 IEEE.

关键词： FBW High radiation efficiency Millimetre applications MIMO Self-Isolation Tapered fed

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Deep Learning Model Based Criminal Identification System for Law Enforcement Department 15

Deep Learning Model Based Criminal Identification System for...

引用

15th International Conference on Computing communication and Networking Technologies, ICCCNT 2024

作者： Indhumathi, N. Maheswaran, S. Sridhar, N. Venkateswaran, K. Priyanka, S. Sangamithira, V. Kongu Engineering College Department of Electronics and Communication Engineering Erode India Cmr Institute of Technology Department of Electronics and Communication Engineering Bengaluru India

ISBN: (数字)9798350370249

ISBN: (纸本)9798350370249

CrimeNet is an innovative automatic criminal identification system developed for law enforcement agencies to streamline and enhance the classification of criminals. Leveraging Convolutional Neural Network (CNN) algorithms, this system aims to significantly improve the efficiency and effectiveness of identifying individuals involved in criminal activities. The proposed methodology involves creating a comprehensive database containing both full images and sliced images of criminals, along with their personal and criminal information. Through advanced facial recognition technology powered by deep learning methods, CrimeNet compares captured images of individuals with the stored criminal data, enabling law enforcement to accurately identify suspects. Utilizing YOLO v8, CrimeNet maps facial features to pinpoint specific facial points, facilitating the accurate identification of individuals. By automating tasks and utilizing cutting-edge technology, this system elevates the capability of law enforcement in spotting criminals, ultimately enhancing public safety. Furthermore, CrimeNet provides customizable notifications and alarms based on various detection or recognition events, enabling law enforcement to swiftly respond to potential threats. Automated security response workflows, as well as SMS and email notifications, further streamline the process of apprehending suspects and preventing future crimes. © 2024 IEEE.

关键词： Deep learning YOLO Law enforcement Databases Face recognition Streaming media Public security Convolutional neural networks Security Facial features

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Low Power Estimation for Multibit Memory Writing and Reading in Hardware Chip Design

Low Power Estimation for Multibit Memory Writing and Reading...

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2024 International Conference on Smart Devices, ICSD 2024

作者： Agarwal, Prateek Garg, Tanuj Kumar Kumar, Adesh Gurukula Kangri Faculty of Engineering and Technology Department of Electronics and Communication Engineering Haridwar India UPES School of Advanced Engineering Department of Electrical & Electronics Engineering Dehradun India

ISBN: (纸本)9798350394412

The development of parallel programming models can be traced back to the parallelism and hardware synchronization verification that is required for an architecture to perform its intended functions. The research article focuses on power estimation for multibit memory operation of writing and reading in hardware chips. The design is considered for 16 memory registers having 8-bit data synchronized with a single clock. The performance of the chip is analyzed for different sizes of input data with the hardware chip parameters such as power consumption, frequency, and delay. The parallel data processing in the registers helps for optimal delay and power estimation in the hardware. The chip simulation is verified on the Virtex-5 FPGA hardware kit for different data sizes. © 2024 IEEE.

关键词： Memory architecture

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Compact-size frequency reconfigurable antenna for sub-6 GHz 5G applications 5th

Compact-size frequency reconfigurable antenna for sub-6 GHz ...

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5th International Conference on Advances in AI for Biomedical Instrumentation, electronics and Computing, ICABEC 2023

作者： Kumar, Sachin Nagpal, Himanshu Singh, Ghanshyam Harlan, L. Department of Electronics and Communication Engineering SRM Institute of Science and Technology Kattankulathur India Department of Electronics and Communication Engineering Ajay Kumar Garg Engineering College Ghaziabad India Department of Electronics and Communication Engineering Feroze Gandhi Institute of Engineering and Technology Raebareli India

ISBN: (纸本)9781032642987

In this work, a frequency adaptable planar monopole antenna is designed for use in 5G communication systems. The proposed antenna is made up of two patches, a partial ground plane, and a 50-W microstrip feed line. The lower patch is a conventional rectangular patch and the upper patch is a modified trapezoidal-shaped ring. An RF PIN diode is added between the bottom and top patches to offer frequency diversity. The antenna can be tuned to operate in the sub-6 GHz 5G (3.4-5.8 GHz and 2.4-2.8 GHz) frequency bands, when the diode is turned ON and OFF. © 2024 The Author(s).

关键词： Slot antennas

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