发布求助
文献互助 智能选刊 最新文献

2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)最新文献

筛选
英文 中文
A 433 MHz e-GaN HEMT based Power Oscillator for Far Field Wireless Power Transfer 用于远场无线电力传输的433 MHz e-GaN HEMT功率振荡器
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355883
Theodora Rezk, G. Fahmy, S. Ibrahim, H. Ragai
{"title":"A 433 MHz e-GaN HEMT based Power Oscillator for Far Field Wireless Power Transfer","authors":"Theodora Rezk, G. Fahmy, S. Ibrahim, H. Ragai","doi":"10.1109/JAC-ECC51597.2020.9355883","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355883","url":null,"abstract":"This paper presents a power oscillator design based on a class E power amplifier. The enhancement GaN HEMT is used for its fast switching time, low ON resistance and low temperature sensitivity. The presented circuit is designed to be used in far field wireless charging which is the 2nd generation in this type of chargers. The simulated output power of the power oscillator is 24.9 W at the ISM band of 433 MHz. Effect of design parameter variability is also studied.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127160092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Multiagent Multi-Armed Bandit Techniques for Millimeter Wave Concurrent Beamforming 毫米波并发波束形成的多智能体多臂强盗技术
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355899
S. Hashima, Kohei Hatano, H. Kasban, M. Rihan, E. M. Mohamed
{"title":"Multiagent Multi-Armed Bandit Techniques for Millimeter Wave Concurrent Beamforming","authors":"S. Hashima, Kohei Hatano, H. Kasban, M. Rihan, E. M. Mohamed","doi":"10.1109/JAC-ECC51597.2020.9355899","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355899","url":null,"abstract":"This paper leverages multiagent multi-armed bandit (MA-MAB) schemes to handle efficiently the millimeter wave (mmWave) concurrent transmission problem. MA-MAB selects the beams with the maximum long-term reward, mostly data rate, from the concurrent links. The mmWave access points (APs) are the agents of the bandit game, while the arms are the existing beam directions. Towards that, MA-KLUCB and MA-EXP3 are proposed and tested via applying them within each AP in a selfish concurrent beamforming scenario. It turns out that the proposed algorithms provide near-optimal performances as compared to the exhaustive search of all concurrent beams’ combinations. Also, they demonstrate reasonable fast convergence rates too.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"2800 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127443118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Self-Powered Wearable Sensor Node for IoT Healthcare Applications 用于物联网医疗保健应用的自供电可穿戴传感器节点
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355925
S. Mohsen, A. Zekry, M. Abouelatta, Khaled Y. Youssef
{"title":"A Self-Powered Wearable Sensor Node for IoT Healthcare Applications","authors":"S. Mohsen, A. Zekry, M. Abouelatta, Khaled Y. Youssef","doi":"10.1109/JAC-ECC51597.2020.9355925","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355925","url":null,"abstract":"In this paper, a self-powered Internet of Things (IoT) wearable sensor node is proposed for healthcare monitoring. This node enables doctors of measuring the heart rate, blood oxygen saturation (SpO2), and body temperature. This node is based on NodeMCU board that includes a microcontroller with a Wi-Fi chip. A solar energy harvester is developed as power supply to provide a solution for prolonging the lifetime of the node. This harvester is designed of two flexible photovoltaic (PV) panels, a charging controller, and a lithium-ion battery. The harvester is practically tested outdoors under direct sunlight and partly cloudy conditions. Experimentally, the IoT wearable sensor node consumes an average power of 20.23 mW over one hour and the lifetime of the node is 28 hours in a wake-up-sleep mode. Finally, the experimental results show that the monitored physiological data of the node are stored into an Ubidots cloud server.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125159909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Rigorous Analysis of Complex Reflection Coefficient of a Microwave Source 微波源复反射系数的严格分析
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355885
T. Sallam, Abdel Rahman Mohamad
{"title":"Rigorous Analysis of Complex Reflection Coefficient of a Microwave Source","authors":"T. Sallam, Abdel Rahman Mohamad","doi":"10.1109/jac-ecc51597.2020.9355885","DOIUrl":"https://doi.org/10.1109/jac-ecc51597.2020.9355885","url":null,"abstract":"Rigorous expression for a microwave source complex reflection coefficient is derived, its measurement is performed for frequency domain (1–18 GHz). Design of an algorithm to utilize software phase shifters instead of hardware shifters used for measuring amplitude and phase is created.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115637990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microwave Absorber with Optimized and Perforated Matching Layer for Double Layer Resistive- FSS 双层阻性FSS优化穿孔匹配层微波吸收器
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355931
David Youssef, A. Shaker, K. Mahmoud
{"title":"Microwave Absorber with Optimized and Perforated Matching Layer for Double Layer Resistive- FSS","authors":"David Youssef, A. Shaker, K. Mahmoud","doi":"10.1109/JAC-ECC51597.2020.9355931","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355931","url":null,"abstract":"In this paper a modified ultra-wideband microwave absorber is proposed in the form of double layer resistive FSS with perforated matched layer, the proposed design results shows an absorption bandwidth of 40.1 GHz in the range between 4.8 to 45.9 GHz under −10 dB at the unit cell level with fractional bandwidth(FBW) of 162.13 % with a total thickness of 7.1mm that is 0.113λl at the lowest cut-off frequency. Moreover, the proposed design shows stability at different inclination angles up to 80 degrees for TE-mode. Further, a radar cross section (RCS) study is proposed for 10x10 array versus prefect electric conductor (PEC) and the results shows a high absorption level at different frequencies","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122848973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Design of High-Efficiency Low-SAR Coupled Folded Antenna for 5G Applications 面向5G应用的高效低sar耦合折叠天线新设计
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355858
Alaa M. Hediya, A. Attiya, W. El-Deeb
{"title":"New Design of High-Efficiency Low-SAR Coupled Folded Antenna for 5G Applications","authors":"Alaa M. Hediya, A. Attiya, W. El-Deeb","doi":"10.1109/jac-ecc51597.2020.9355858","DOIUrl":"https://doi.org/10.1109/jac-ecc51597.2020.9355858","url":null,"abstract":"In this paper, the design and analysis of a highly efficient antenna with a low SAR rate is presented for a wide frequency band suitable for 5G mobile communications. The proposed antenna operates in N77, N78, N79 bands from 3 to 5 GHz. The antenna is designed in the form of a folded dipole antenna. It is divided into different coupled sections. Three configurations of the proposed antenna are studied based on the lower side below the folded dipole. These configurations include a complete ground plane, partial ground plane, and partial ground plane loaded with a printed EBG structure. Through this design, the return loss of −10 dB at all frequencies in the range of the antenna is achieved, and realized antenna gain equals 2.11 dB. The SAR analysis over 1 g tissue is also studied on the Hand Head Model by using CST Microwave Studio. The maximum SAR value obtained for the present design at resonant frequency 3.2 GHz is found to be 0.19 W/Kg which is quite safe for the human being.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131222008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
MEMS Gyro Noise Estimation and Modeling for Precise Navigation Simulation 用于精密导航仿真的MEMS陀螺噪声估计与建模
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/jac-ecc51597.2020.9355936
Salem Abd El-Hakem Hegazy, A. Kamel, I. Arafa, Y. Elhalwagy
{"title":"MEMS Gyro Noise Estimation and Modeling for Precise Navigation Simulation","authors":"Salem Abd El-Hakem Hegazy, A. Kamel, I. Arafa, Y. Elhalwagy","doi":"10.1109/jac-ecc51597.2020.9355936","DOIUrl":"https://doi.org/10.1109/jac-ecc51597.2020.9355936","url":null,"abstract":"Inertial navigation system (INS) pivotal error sources are related to the deterministic errors and random errors of the inertial measurement unit (IMU). Low-cost inertial sensors are distinguished by high noise and significant performance uncertainties. Consequently, errors related to low-cost INS states (position, velocity, and attitudes) are rising rapidly in stand-alone mode. If accurate performance can be achieved with low-cost IMU, the cost of real applications can be reduced and the development of new applications may be made feasible. Errors in gyroscopes (gyro) which are the main building block of IMU play a significant role, while the errors in the accelerometers can be calibrated and compensated with reasonable precision by comparison with the gravity of the earth. So precise modeling of gyro for navigation simulation for missiles and unmanned vehicles is essential. To achieve this goal, firstly an error estimation algorithm is implemented. This algorithm firstly is tested with a simulated signal with a known noise parameter injected in it. Moreover, the calibration of deterministic errors is performed. Furthermore, a study of the autocorrelation function of the sensor outputs is presented, and a method for calculating the frequency response to determine potential stability problems is provided by calculating the cutoff frequency. The typical analysis methods discussed throughout the paper are intended to assist designers to develop or choose gyro that is uniquely adapted to the design application requirements. The development technique is used to characterize a tactical grade Micro-Electro-Mechanical Systems (MEMSIC) IMU, and the test results prove its accuracy comparing to the manufacturing calibration sheet.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115119023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Histogram Processing for Quality Enhancement of Industrial Videoscope Images 直方图处理提高工业摄像机图像质量
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355876
Reda Ammar, F. A. Abd El-Samie, W. El-shafai, Huda Ibrahim mohamed Ashiba, A. A. Elazm, Amir El-Safrawey
{"title":"Histogram Processing for Quality Enhancement of Industrial Videoscope Images","authors":"Reda Ammar, F. A. Abd El-Samie, W. El-shafai, Huda Ibrahim mohamed Ashiba, A. A. Elazm, Amir El-Safrawey","doi":"10.1109/JAC-ECC51597.2020.9355876","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355876","url":null,"abstract":"The industrial Videoscope (VS) device is designed for the endoscopic inspection of professional equipment like motors, pumps, turbines, cavities in buildings and vehicle bodies, etc. The inspection process is performed during the operation of the equipment. The videoscope device gives different outputs such as images and videos. Because the images are taken during the equipment operation and may be taken in different environments, some or most output images may suffer from different imperfections such as low contrast and poor details. This paper presents an efficient proposed approach to enhance the quality and contrast of the VS images. The proposed approach is based on Contrast Limited Adaptive Histogram Equalization (CLAHE) with adaptive gamma correction by choosing the best clip limits in the CLAHE and the optimum parameter of an adaptive gamma correction transfer function. This proposal achieves an enhancement for the imperfections in the VS images based on both quantitative and qualitative metrics. Numerical results emphasize the performance enhancement with the proposed approach. Hence, it can be recommended for industrial VS systems.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133609519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Initial Alignment Of Strap-down Inertial Navigation System On Stationary Base For High-Speed Flying Vehicle 高速飞行器固定基座捷联惯导系统的初始对准
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355964
Ahmed W. Ebrahim, I. Arafa, H. Hendy, Y. Elhalwagy, A. Elfarouk
{"title":"Initial Alignment Of Strap-down Inertial Navigation System On Stationary Base For High-Speed Flying Vehicle","authors":"Ahmed W. Ebrahim, I. Arafa, H. Hendy, Y. Elhalwagy, A. Elfarouk","doi":"10.1109/JAC-ECC51597.2020.9355964","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355964","url":null,"abstract":"The initial alignment of the Inertial Navigation Systems (INS) has significant importance in recent years. It is needed to ensure the accuracy and reliability of the system. For the initial alignment of Strap-down INS (SINS), Navigation Mathematical Software (NMSW) implements an efficient technique. These techniques provide a solution for navigation problems such that the inertial velocity, and coordinate estimation in addition to the inertial sensor’s calibration. In this paper, the navigation algorithm for the closed-loop system is modified to feedback continuously in alignment. The NMSW is testing, and a typical trajectory is calculated based on the block diagram of the hardware-in-the-loop (HIL) flight simulation. Results show that the initial calculated variance setting of Azimuth angle error will significantly affect the speed of the initial alignment. The process of simulation and computation is highlighted related to the trajectory simulator data from the equation of motions of the high-speed flying vehicle.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133759947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Power-Aware 3D UAV Placement for IoT Emergency Communications 面向物联网应急通信的功率感知3D无人机布局
2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC) Pub Date : 2020-12-14 DOI: 10.1109/JAC-ECC51597.2020.9355853
A. Bahr, M. A. Mehaseb, Sami A. Doliel, S. El-Rabaie, F. A. Abd El-Samie
{"title":"Power-Aware 3D UAV Placement for IoT Emergency Communications","authors":"A. Bahr, M. A. Mehaseb, Sami A. Doliel, S. El-Rabaie, F. A. Abd El-Samie","doi":"10.1109/JAC-ECC51597.2020.9355853","DOIUrl":"https://doi.org/10.1109/JAC-ECC51597.2020.9355853","url":null,"abstract":"The Unmanned Aerial Vehicles (UAVs) are used for rapid and easy deployment to provide cellular coverage in emergency cases. This paper considers a wireless-enabled UAV used as a relay to provide coverage for IoT devices in case of emergency communications, and then it transmits data to the nearest base station. Particle Swarm Optimization (PSO) algorithm is used to find an efficient 3D placement of the UAV. The optimization problem is formulated to minimize the transmitted power and reduce the outage probability for the optimum 3D placement of the UAV, taking into consideration the traffic requirements of each IoT device. The design of the proposed algorithm minimizes the power of both links: ground-to-air (G2A) link and air-to-ground (A2G) link. The numerical results are presented showing that the proposed algorithm significantly reduces the transmitted power with very low complexity.","PeriodicalId":146890,"journal":{"name":"2020 8th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129061498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信