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2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)最新文献

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Broadside/Endfire Switched Beam Double Ridge-Gap Waveguide H-plane Horn Antenna 舷侧/端火开关波束双脊隙波导h面喇叭天线
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051271
M. M. Badawy, H. Malhat, S. Zainud-Deen
{"title":"Broadside/Endfire Switched Beam Double Ridge-Gap Waveguide H-plane Horn Antenna","authors":"M. M. Badawy, H. Malhat, S. Zainud-Deen","doi":"10.1109/JAC-ECC48896.2019.9051271","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051271","url":null,"abstract":"In this paper, H-plane horn antenna based on double ridge-gap waveguide (RGW) technology is designed for satellite applications at 13.5 GHz. The double RGW surfaces are based on AMC-AMC parallel plate region around the metal horn-shaped ridge to enforce the propagating wave through the two parallel ridges. The AMC nail unit-cell has a stop-band of 10.5–22 GHz. The double-ridge horn antenna radiates end-fire beam along the x-axes with maximum gain of 9.45 dBi and high front-to-back (FBR) of 14.3 dB. A vertical beam switching from end-fire direction to broadside direction is achieved by adding rows of nail unit-cells in the front of the horn aperture. A metamaterial (MM) polarizer is added to the antenna structure to radiated circularly polarized waves.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127098733","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: 3
A High FoM Down Conversion Mixer with a Boosted Conversion Gain for IEEE 802.11b and IEEE 802.15.4 Standards IEEE 802.11b和IEEE 802.15.4标准下变频增益提升的高FoM混频器
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051018
K. Yousef
{"title":"A High FoM Down Conversion Mixer with a Boosted Conversion Gain for IEEE 802.11b and IEEE 802.15.4 Standards","authors":"K. Yousef","doi":"10.1109/JAC-ECC48896.2019.9051018","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051018","url":null,"abstract":"This paper presents a CMOS mixer with excellent input matching and high conversion gain @ 2.4 GHz. Inductive source degeneration is used for RF port input matching. This mixer utilizes inductive shunt peaking for conversion gain boosting. Active loads having drain-gate AC resistive blocking devices are employed for further enhancement of IF output power. The proposed mixer is designed, simulated and implemented in TSMC 0.18 μm CMOS process. This mixer layout occupies an active area of 0.293 mm2. Its input matching network is tuned to 2.4 GHz. It achieves a conversion gain of 31.88 dB while driving a 3.43 mA from a 1.8V supply. It has a FoM of 13.321.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124695321","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
Development of a New 5 DoF Robotic Assistant System for Neurosurgery 新型五自由度神经外科机器人辅助系统的研制
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051028
Amr Marzuq, M. Magdy, A. El-assal, Baher M. Eltoukhy
{"title":"Development of a New 5 DoF Robotic Assistant System for Neurosurgery","authors":"Amr Marzuq, M. Magdy, A. El-assal, Baher M. Eltoukhy","doi":"10.1109/JAC-ECC48896.2019.9051028","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051028","url":null,"abstract":"Craniotomy and Brain Tumor Biopsy are sorts of neurosurgeries related to the brain. A craniotomy is a bone flap removal from the skull surface which is an essential procedure in open skull surgeries. A craniotomy can be a time-consuming process, and the large forces needed for the cutting process make surgeons exhausted before operating the critical brain tissue. As a result, the probability of further errors increases. On the other hand, Brain Tumor Biopsy is a high accuracy surgery that involves a needle insertion to the tumor through a specific pre-planned trajectory. Surgeons still use a stereotactic frame as needle guidance. This frame is a half-century technology that can involve human errors during measurement and mounting processes. Nowadays, High stiffness robotic systems can achieve precise positioning and guidance without frames, save time and effort, and enhance safety. This paper presents a new 5 DoF robotic-assistant system that can be used in both Surgeries. This system can reach any point on the surface of the patient's skull with different orientation angles within the proposed system workspace. Based on motion requirements and skull shape, decoupled remote center-of-motion (RCM) mechanisms are selected for this system. The proposed system illustrates a high stiffness under the maximum bone drilling forces with a position error below 230 μm.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125682004","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: 3
Design of a Planar Array of Microstrip Antennas with Reduced Mutual Coupling for Medical Imaging 用于医学成像的低互耦微带天线平面阵列设计
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051082
Mohammad A. Abd El-raheem, E. Khaled
{"title":"Design of a Planar Array of Microstrip Antennas with Reduced Mutual Coupling for Medical Imaging","authors":"Mohammad A. Abd El-raheem, E. Khaled","doi":"10.1109/JAC-ECC48896.2019.9051082","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051082","url":null,"abstract":"This paper introduces a design of planar array of multiband microstrip antennas for purposes of medical microwave imaging. The target application is breast microwave tomography. The proposed array achieves low level mutual coupling between its elements which is an important parameter for signal integrity during imaging process. Measurements done in the near field regions as in the case of medical imaging are affected greatly by the elements mutual coupling. The proposed array satisfies that requirement. The achieved low coupling level is reached through suitable orientation of each individual element and a wise choice of elements separation and array geometry.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116459424","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
Using EMD for Smoothing Atomic Clock Error in National Time Scale Algorithm 利用EMD平滑国家时标算法中的原子钟误差
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051113
A. I. Mostafa, G. Hamza, A. Zekry
{"title":"Using EMD for Smoothing Atomic Clock Error in National Time Scale Algorithm","authors":"A. I. Mostafa, G. Hamza, A. Zekry","doi":"10.1109/JAC-ECC48896.2019.9051113","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051113","url":null,"abstract":"Enhancing the frequency stability of the national Time Scale (TS) is a main target of all time keeping laboratories around the world. The Empirical Mode Decomposition (EMD), as a new adaptive simple signal processing technique, is used previously for enhancing the frequency stability of national TS by denoising atomic clock's signal. But, this requires removing the trend of clock phase measurement data (clock detrending) outside the main TS algorithm before applying EMD to obtain real variations of the signal. In this paper, a new more effective use of EMD in the TS algorithm for enhancing frequency stability of national TS is introduced. The EMD is used directly for smoothing atomic clocks errors used in the TS ensemble algorithm without detrending. Then, the smoothed clocks errors are used for building an average TS to improve its resultant frequency stability and hence that of national TS. The use of EMD for smoothing atomic clock error is compared to that of the Kalman Filter (KF) as a famous signal processing technique for the same purpose. Obtained results show that the simple EMD achieves an average TS frequency stability improvement factor of 44% as compared to 41% of the complicated KF. Also, this new proposed use of EMD saves the processing effort and time required for clock detrending step before denoising.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129276154","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
Cell Planning based on Relay-Nodes Positions and Power using Particle Swarm Optimization 基于中继节点位置和功率的粒子群优化小区规划
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051091
Rana M. Mokhtar, H. Abdel-Atty, K. Mahmoud
{"title":"Cell Planning based on Relay-Nodes Positions and Power using Particle Swarm Optimization","authors":"Rana M. Mokhtar, H. Abdel-Atty, K. Mahmoud","doi":"10.1109/JAC-ECC48896.2019.9051091","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051091","url":null,"abstract":"The continuous research to overcome the obstacles of cellular networks has motivated us to focus in eliminating the coverage problems that users experience at the cell edge with a cost-effective solution. In this paper, we initially propose a scenario of the cell plan through the relay nodes. Thus, two stages of the relay nodes are deployed; edge relay nodes and the supporting intermediate relay nodes. Furthermore, to increase the efficiency of the cell, we applied an optimization algorithm to the said scenario to reach an optimum plan through a particle swarm optimization algorithm (PSO). The evaluation of simulation results outweighed the PSO algorithm. Hence, the optimum plan which provides the best coverage with a reasonable cost is introduced herein.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126818028","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
Design and Simulation of single-phase 3 kW PV inverter 单相3kw光伏逆变器的设计与仿真
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051101
N. W. Riad, W. Anis, A. Elkassas
{"title":"Design and Simulation of single-phase 3 kW PV inverter","authors":"N. W. Riad, W. Anis, A. Elkassas","doi":"10.1109/JAC-ECC48896.2019.9051101","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051101","url":null,"abstract":"This research provides a complete analysis of photovoltaic (PV) inverter of 3kW output power by merging the design of PV array and DC-AC inverter; The design includes a PV module to configure a large array that agrees with the inverter power output, the DC-DC step-up (boost) converter, next the full-bridge using MOSFET switches controlled by PWM (Pulse Width modulation) is used to generate three levels signal and the output LCL filter design, then to the load. Also studying the inverter parameters that affect the losses and inverter efficiency. The design is verified using Matlab-Simulink simulation using parameters of a real PV module, switches and passive elements to be close to practical work. The simulation results prove the design output consistency.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127553364","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
Intra Mode Decision Acceleration for HEVC Screen Content Coding HEVC屏幕内容编码的模式内决策加速
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051167
Emad Badry, A. Shalaby, M. Sayed
{"title":"Intra Mode Decision Acceleration for HEVC Screen Content Coding","authors":"Emad Badry, A. Shalaby, M. Sayed","doi":"10.1109/JAC-ECC48896.2019.9051167","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051167","url":null,"abstract":"High Efficiency Video Coding (HEVC) is the latest video coding standard, it employs complicated techniques to achieve high compression ratio. A new extension for the HEVC was released to target screen content video due to their special nature. Screen content sequences are limited in colors besides they have sharp edges and complex structure. The new incorporated tools for screen content coding increase the encoding time which affects the practical implementation of the encoder. In this paper, a new fast scheme is proposed for fast screen-content encoder by skipping unnecessary mode testing. The algorithm is simulated using HEVC screen content software tool HEVC-16.7+SCM 6. It saves 26.24% of the encoding time with only 1.15% increase in the BD-Rate.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126356064","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
Reconfigurable Graphene Gas Sensor using Plasmonic Crescent Dipole Antenna 使用等离子体新月形偶极子天线的可重构石墨烯气体传感器
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/JAC-ECC48896.2019.9051350
E. A. El-Refaay, H. Malhat, S. Zainud-Deen
{"title":"Reconfigurable Graphene Gas Sensor using Plasmonic Crescent Dipole Antenna","authors":"E. A. El-Refaay, H. Malhat, S. Zainud-Deen","doi":"10.1109/JAC-ECC48896.2019.9051350","DOIUrl":"https://doi.org/10.1109/JAC-ECC48896.2019.9051350","url":null,"abstract":"In This paper, graphene crescent dipole plasmonic antenna is introduced for gas sensing. The proposed gas sensor has reconfigurable absorption characteristics in the wavelength range from 900 nm to 1600 nm. The effect of the sensor dimensions on the total absorption of different gases is investigated. A graphene monolayer is used to enhance the gas molecules absorption in its unbiased state. An enhancement of the total absorption cross-section (ACS) values for $n=1.4$ is 1.028×105 nm2 for unloaded graphene sensor, and is 1.77×105for graphene loaded case. The proposed gas sensor has sensitivity of 677.5 nm/RIU. An enhancement of gas absorption is achieved by using a sensor array of the plasmonic crescent dipole antenna. The total ACS peak value is 5.38×106nm2 for 6×6 dipole array.","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130477786","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: 3
[Front matter] (前页)
2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC) Pub Date : 2019-12-01 DOI: 10.1109/jac-ecc48896.2019.9051295
{"title":"[Front matter]","authors":"","doi":"10.1109/jac-ecc48896.2019.9051295","DOIUrl":"https://doi.org/10.1109/jac-ecc48896.2019.9051295","url":null,"abstract":"","PeriodicalId":351812,"journal":{"name":"2019 7th International Japan-Africa Conference on Electronics, Communications, and Computations, (JAC-ECC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115721845","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
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