发布求助
文献互助 智能选刊 最新文献

2011 11th Mediterranean Microwave Symposium (MMS)最新文献

筛选
英文 中文
Design of a planar multifunctions antenna 平面多功能天线的设计
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068530
A. Elsayed Ahmad, M. Thevenot, Moustapha Salah Toubet, G. Lerideau, J. Floc'h
{"title":"Design of a planar multifunctions antenna","authors":"A. Elsayed Ahmad, M. Thevenot, Moustapha Salah Toubet, G. Lerideau, J. Floc'h","doi":"10.1109/MMS.2011.6068530","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068530","url":null,"abstract":"In this paper, a prototype antenna has been designed and manufactured. For the patch array, the feed network has been designed to deal with the couplings. Our numerical validations have proved that the connection between the feed network and the patches array achieves the objective radiation pattern. This method can provide a very low axial ratio of the order of 3 dB over a wide angular aperture [−30°, 30°] in all planes ϕ. For the WPA, the bandwidth of this type of antenna is narrow. The achieved prototype, presents performances similar to those obtained in simulation The major work in this paper has been on the patch array.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114623248","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
Neural Network compensator based MMSE receiver for HPA nonlinearity in MIMO OFDM systems 基于神经网络补偿器的MMSE接收机用于MIMO OFDM系统中HPA非线性
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068575
M. Dakhli, R. Zayani, R. Bouallègue
{"title":"Neural Network compensator based MMSE receiver for HPA nonlinearity in MIMO OFDM systems","authors":"M. Dakhli, R. Zayani, R. Bouallègue","doi":"10.1109/MMS.2011.6068575","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068575","url":null,"abstract":"In this paper, we present a method based on Neural Network (NN) technique and accompanied with MMSE (Minimum Mean Square Error), which corrects at the receiver level, the Non-Linear (NL) distortions due to the HPA (High Power Amplifier). The neural network consists on a feed-forward Multi-Layer Perceptron (MLP) associated with Levenberg-Marquardt learning algorithm. The results show that the neural network compensator brings perceptible in a complete VBLAST MIMO OFDM (Vertical Bell Laboratories Layered Space-Time Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing) system running under a Rayleigh fading channel.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"4656 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129977965","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
Phase-only array beam control using a Taguchi optimization method 基于田口优化方法的纯相阵波束控制
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068537
N. Nemri, A. Smida, R. Ghayoula, H. Trabelsi, A. Gharsallah
{"title":"Phase-only array beam control using a Taguchi optimization method","authors":"N. Nemri, A. Smida, R. Ghayoula, H. Trabelsi, A. Gharsallah","doi":"10.1109/MMS.2011.6068537","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068537","url":null,"abstract":"This paper introduces the developed hardware platforms of the smart antenna transmitter system and its implementation details and presents the novel concept of smart antenna system which requires digital beamforming based on Taguchi Method. This paper investigates how the implementation on STM8 of the signal processing in hardware affects the performance of the adaptive array antenna. This system shows excellent performance for the radiation pattern and capable to steering by adjusting the relative phases of the signal received or transmitted by each antenna. The objective of the design is to construct smart antenna beamforming systems with hardware-software implemented Taguchi Method.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128675032","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: 8
Study of a RFID antenna for a telemetric application 遥测应用射频识别天线的研究
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068589
H. Talleb, D. Lautru, V. Fouad Hanna, M. Wong, J. Wiart
{"title":"Study of a RFID antenna for a telemetric application","authors":"H. Talleb, D. Lautru, V. Fouad Hanna, M. Wong, J. Wiart","doi":"10.1109/MMS.2011.6068589","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068589","url":null,"abstract":"Wireless body area networks (WBANs) technology is now recognized as a promising candidate for various potential applications in the domains of health, surveillance, monitoring, sport, multimedia, entertainment, etc. As the devices are implanted or embedded in the human body, the design constraints are particularly stringent: low power consumption is required for applications demanding autonomy (e.g., medical surveillance), security and safety are mandatory for vital applications, radiations are subject to regulatory limits for public health and coexistence in addition to other constrains like size, aspect ratio, and weight.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122982022","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
Impacts of adaptive modulation on system level design for IEEE802.22 Cognitive Radio receiver 自适应调制对IEEE802.22认知无线电接收机系统级设计的影响
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068555
Rami Ben Amira, D. Ayadi, M. Loulou
{"title":"Impacts of adaptive modulation on system level design for IEEE802.22 Cognitive Radio receiver","authors":"Rami Ben Amira, D. Ayadi, M. Loulou","doi":"10.1109/MMS.2011.6068555","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068555","url":null,"abstract":"This paper demonstrates a system level design of a Cognitive Radio (CR) receiver that supports IEEE 802.22 Standard. In this work, we put a special interest on the impact of adaptive modulation on the design of the Radio Frequency (RF) receiver Front-End. Its architecture is based on super-heterodyne receiver supporting Sub-Band Sensing technique. In this study, the IEEE 802.22 radio system characteristics are dispatched throughout the different RF receiver blocks. Besides, theoretical computation and various techniques of the system level design are developed. Simulation results for RF characteristics such as noise figure (NF), linearity (third order intercept point, (IIP3)), gain, and output power are introduced. The obtained specifications for each RF block proved that its linearity and NF requirements are related to its own gain performance. The receiver performs a total gain of 54dB and an IIP3 of −17.8dBm for low gain mode. It achieves 105dB as gain, IIP3 of −23.7dBm and a noise figure of 6.6dB for high gain mode.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117140879","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
A digital Doherty transmitter suitable for wireless infrastructure efficiency enhancement 一种适用于无线基础设施效率提高的数字多尔蒂发射机
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068550
R. Darraji, F. Ghannouchi
{"title":"A digital Doherty transmitter suitable for wireless infrastructure efficiency enhancement","authors":"R. Darraji, F. Ghannouchi","doi":"10.1109/MMS.2011.6068550","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068550","url":null,"abstract":"The present work proposes a digital Doherty power amplifier (PA) with improved efficiency performance. The efficiency enhancement is achieved by using a digital adaptive phase alignment mechanism that is implemented to address the problem of power-dependent phase imbalance between the carrier and peaking cells of gallium-nitride (GaN) Doherty PAs following the turn-on of the peaking cell. An average efficiency of 57% has been measured using a one-carrier Worldwide Interoperability for Microwave Access (WiMAX) signal with a peak-to-average power ratio of 7 dB. This corresponds to an improvement of 7% in average efficiency with no linearity degradation compared to a conventional single-input fully analog Doherty PA.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"221 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134303916","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
Spatial complexity prediction for H.264 rate control H.264速率控制的空间复杂度预测
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068568
BenHajyoussef Anis, T. Ezzedine, Bouallegue Ammar
{"title":"Spatial complexity prediction for H.264 rate control","authors":"BenHajyoussef Anis, T. Ezzedine, Bouallegue Ammar","doi":"10.1109/MMS.2011.6068568","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068568","url":null,"abstract":"This contribution presents an analysis of spatial complexity prediction for H.264 rate control. A macroblock based model is proposed showing that we can take profit of the spatial correlation of macroblocks complexity and offering an improvement in coding efficiency. We compare our algorithm to JVT-G012 rate control algorithm and demonstrate that we can improve the prediction error by17 % and the video quality by 0.17dB.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125946234","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
Theoretical and experimental characterization of distributed analog phase shifter 分布式模拟移相器的理论与实验表征
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068584
M. Ould-Elhassen, M. Mabrouk, A. Ghazel, P. Benech
{"title":"Theoretical and experimental characterization of distributed analog phase shifter","authors":"M. Ould-Elhassen, M. Mabrouk, A. Ghazel, P. Benech","doi":"10.1109/MMS.2011.6068584","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068584","url":null,"abstract":"This paper describes a theoretical study and experimental characterization of distributed phase shifter based on CPW line loaded by MACOM varactor diode. A circuit simulation combined with electro-magnetic simulation is presented and compared with measurement. In this work, we present also an impedance matching method allows adapting our phase shifter without additional circuit. The expression of phase shifting is obtained through the global ABCD matrix of proposed phase shifter circuit and compared with the measurement. The simulations are carried out on Matlab and ADS (Momentum) software's, a comparison between two simulations and measurement of fabricated phase shifter is made in order to validate the theoretical modeling and experimental characterization, good agreement is obtained.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123989880","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
Caracterization of the materials used as GSM and DCS antenna in free space 在自由空间中用作GSM和DCS天线的材料的特性
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068578
Lamia Zarral, F. Ndagijimana
{"title":"Caracterization of the materials used as GSM and DCS antenna in free space","authors":"Lamia Zarral, F. Ndagijimana","doi":"10.1109/MMS.2011.6068578","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068578","url":null,"abstract":"The use of new materials constitutes an alternative to solve the problems involved in progress of electronics nowadays. The good knowledge of the electric materials parameters is a need. For this reasons, we have developed a broad-band technique for measuring the complex relative permittivity (ε*) of dielectric materials. Our method is based on the use of a measurement bench in free space, using two antenna Vivaldi which are simulated; one used to produce electromagnetic wave and the second is to resave the electromagnetic wave. The materials are placed between the two antennas to be characterized. Many results are obtained with S parameters in transmission, using the vectorial analysis. To extract the complex permittivity we use a mathematical model.","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122755845","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
Wideband circularly polarized conical dielectric resonator antenna 宽带圆极化锥形介质谐振器天线
2011 11th Mediterranean Microwave Symposium (MMS) Pub Date : 2011-11-03 DOI: 10.1109/MMS.2011.6068576
Raggad Hedi, L. Mohamed, Razban Tchanguiz, G. Ali
{"title":"Wideband circularly polarized conical dielectric resonator antenna","authors":"Raggad Hedi, L. Mohamed, Razban Tchanguiz, G. Ali","doi":"10.1109/MMS.2011.6068576","DOIUrl":"https://doi.org/10.1109/MMS.2011.6068576","url":null,"abstract":"A wideband circularly polarized (CP) conical dielectric resonator antennas (DRA) is investigated in this paper. The DRA is excited by a single 45 inclined slot fed by a microstrip feed line. The inclination of the slot creates a circular polarization of the radiated wave. The gain of the dielectric resonator antenna varies between 4.8 and 7.2 dBi. This study analyze also à parametric study on the effect size of dielectric resonator on bandwidth and coefficient of reflection. The reflection coefficient, AR, radiation pattern, and antenna gain of are studied, and reasonable agreement between the measured and simulated results is observed","PeriodicalId":176786,"journal":{"name":"2011 11th Mediterranean Microwave Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130131235","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: 5
首页 上一页 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