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2007 Loughborough Antennas and Propagation Conference最新文献

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An Efficient Selective Transceiver for Beamforming and Transmit Diversity Combining Scheme 波束形成和发射分集组合方案中一种有效的选择性收发器
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367449
Lijun Liu, M. Lim
{"title":"An Efficient Selective Transceiver for Beamforming and Transmit Diversity Combining Scheme","authors":"Lijun Liu, M. Lim","doi":"10.1109/LAPC.2007.367449","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367449","url":null,"abstract":"In this paper, we propose an efficient selective transceiver for beamforming and transmit diversity combining scheme. In the proposed scheme, we can eliminate the interference from the signals about by half. The simulation results demonstrate that the proposed scheme can provide more than 10 dB gains under a flat Rayleigh fading channel over the conventional receiver.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123073993","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
Lower Bound on the Shannon Capacity of MIMO Space-Time Communications Systems Based on the Leakage Level. 基于泄漏水平的MIMO空时通信系统香农容量下界。
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367482
P. Chambers, C. Downing, H. Baher
{"title":"Lower Bound on the Shannon Capacity of MIMO Space-Time Communications Systems Based on the Leakage Level.","authors":"P. Chambers, C. Downing, H. Baher","doi":"10.1109/LAPC.2007.367482","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367482","url":null,"abstract":"In MIMO space-time communications systems, the effect of a discrepancy in the channel knowledge is to give rise to a loss in the orthogonality of the eigenmodes. In the context of this work, this loss in orthogonality will be quantified in terms of a leakage level and will be due to a random error in the estimation or measurement of the communications channel. The result will be a drop in the Shannon potential capacity of MIMO communications systems. The calculations of potential capacity and leakage level will clearly be stochastic nature. This is highlighted by plotting the ensemble average as well as the minimum value of these respective quantities. Further to this, a conservative lower bound on the Shannon potential capacity is derived. It is therefore argued that the minimum value of Shannon potential capacity in the case of this lower bound would put an ultimate limit on the performance of the MIMO communications system defined here. The entire discussion is supported by relevant physical measurements.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123219136","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
Use of Animation Software in the Simulation of On-Body Communication Channels 动画软件在人体通信通道仿真中的应用
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367437
M. Gallo, P. Hall, M. Bozzetti
{"title":"Use of Animation Software in the Simulation of On-Body Communication Channels","authors":"M. Gallo, P. Hall, M. Bozzetti","doi":"10.1109/LAPC.2007.367437","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367437","url":null,"abstract":"Wireless Body Area Networks (WBANs) promise cheap and unobtrusive interconnections of electronic based sensors, processors and other devices during normal daily activities in personal, military and sports use. However the modelling of body dynamics raises difficulties when simulation of the channels is required. In this paper the activity of walking has been studied, through the combination of animation and electromagnetic software. Simulations of a walking male at the frequency of 2.45 GHz for two different channels are presented and these results are compared with measurements made in anechoic chamber.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116111899","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
Reconfigurable On-Chip Folded-Patch Antenna using Tunable Electroactive Materials 利用可调谐电活性材料的可重构片上折叠贴片天线
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367493
S. Lanceros‐Méndez, P. M. Mendes
{"title":"Reconfigurable On-Chip Folded-Patch Antenna using Tunable Electroactive Materials","authors":"S. Lanceros‐Méndez, P. M. Mendes","doi":"10.1109/LAPC.2007.367493","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367493","url":null,"abstract":"We report on design and fabrication of a reconfigurable integrated folded shorted-patch (FSP) chip-size antenna for operation in the 5-6 ISM GHz and use in short-range wireless communications. Application of wafer-level chip-scale packaging (WLCSP) techniques like adhesive wafer bonding and through-wafer electrical via formation, combined with the selected antenna type and electroactive materials allows antenna on-chip integration. The operating characteristics of a folded antenna, fabricated on two stacked glass substrates, were analysed with respect to electroactive layer thickness and electrical permittivity values. Antenna size reduction down to 4times4times1 mm3, gain of -8 dB, and bandwidth of 200 MHz at 5,05 GHz were measured. It was also predicted the possibility to reconfigure the antenna operating frequency from 5.55 GHz to 5.95 GHz, with a bandwidth of ~50 MHz.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124179322","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
Miniaturised Multiband PIFA Antenna using a Frequency Selective Surface (FSS) Ground Plane 使用频率选择表面(FSS)接平面的小型化多频带PIFA天线
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367484
I. Zuazola, J. Batchelor, R. Langley
{"title":"Miniaturised Multiband PIFA Antenna using a Frequency Selective Surface (FSS) Ground Plane","authors":"I. Zuazola, J. Batchelor, R. Langley","doi":"10.1109/LAPC.2007.367484","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367484","url":null,"abstract":"Given the constrained geometry of modern mobile equipment, the design of small volume antennas such as planar inverted-F Antennas (PIFAs) is of great interest. In devices such as laptops, PDAs, and phones, antennas must be low profile and compact by Huynh, M.-C and Stutzman (2004). Here a novel low cost, easily fabricated, miniaturized multiband PIFA antenna with a frequency selective surface (FSS) as a bottom layer is presented. The miniature PIFA is designed for GSM 900, GSM1800, DECT, DCS, UMTS, Bluetooth (WLAN) and HiperLAN 1&2.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121395507","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
Intelligent Radio Frequency Identification Positioning using Wireless Sensor Networks 基于无线传感器网络的智能射频识别定位
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367452
A. Mason, A. Shaw, A. Al-Shamma'a
{"title":"Intelligent Radio Frequency Identification Positioning using Wireless Sensor Networks","authors":"A. Mason, A. Shaw, A. Al-Shamma'a","doi":"10.1109/LAPC.2007.367452","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367452","url":null,"abstract":"Asset tracking is an essential part of many industries, so much so that large investments have been made in the area of wire-free automated identification technology, in particular, radio frequency identification (RFID). The aim of this paper is to discuss furthering such technology, making it intelligent through the use of wireless sensor networks (WSN). A prototype asset tracking system is presented, as well as preliminary results from experimentation related to expanding such a system to provide real-time asset positioning.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116490195","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
Characterization of Small-size Microstrip Patch Antennas for Wireless Applications 用于无线应用的小尺寸微带贴片天线的特性
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367461
T. Boutheina
{"title":"Characterization of Small-size Microstrip Patch Antennas for Wireless Applications","authors":"T. Boutheina","doi":"10.1109/LAPC.2007.367461","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367461","url":null,"abstract":"Several designs for small-size microstrip antennas are examined through simulation and experiment. Designs are presented based on a subdivided square microstrip patch with slots along the length and/or the width of the patch. This antenna presents a size reduction of about 46% when compared to a conventional microstrip patch.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126330535","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
Design, Implementation and Analysis of a Robust System to Measure GSM Radiation GSM辐射鲁棒测量系统的设计、实现与分析
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367468
T. Elshafiey, O. Hosny, J. Sirafim, R. Gamal
{"title":"Design, Implementation and Analysis of a Robust System to Measure GSM Radiation","authors":"T. Elshafiey, O. Hosny, J. Sirafim, R. Gamal","doi":"10.1109/LAPC.2007.367468","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367468","url":null,"abstract":"This work presents design, analysis and implementation of a robust system to measure the power of the signal in the GSM range varying from 890 to 960 MHz. The system is composed of antenna, RF detector, low pass filter, amplifier, analog to digital converter, and finally digital interface with a PC. As for the antenna, we designed and implemented microstrip antenna with bandwidth of 8% using foam as dielectric substrate. We used the system to measure the power of the signal in different places at different times during the day. Using the system we assured that the signal varies depending on the traffic at different times and the location with respect to the base station.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132548600","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
Study of a Differential - Fed UWB Antenna 差分馈电超宽带天线的研究
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367473
E. Pancera
{"title":"Study of a Differential - Fed UWB Antenna","authors":"E. Pancera","doi":"10.1109/LAPC.2007.367473","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367473","url":null,"abstract":"This article introduces a study of tapered slot antennas with ultra wideband applications. The contribute of this work is double. Firstly, a novel low profile, planar UWB antenna has been presented. Secondly, from this design, a novel differential -fed UWB antenna has been developed. The possibility of having a differential feeding structure is very useful since it permits to simplify the design of the RF Front -End. The proposed antennas have also the advantage of being small and planar, which allows to be integrated in mobile devices. In this work the parameters that mainly affect the ultra wideband behaviour of the proposed structures have been analyzed.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131643288","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 High Data Rate Wireless Leaky Feeder System for Vehicular Tunnel Applications 应用于车辆隧道的高数据速率无线漏电馈线系统
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367435
T. Quinlan, S. Dudley, S. Walker
{"title":"A High Data Rate Wireless Leaky Feeder System for Vehicular Tunnel Applications","authors":"T. Quinlan, S. Dudley, S. Walker","doi":"10.1109/LAPC.2007.367435","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367435","url":null,"abstract":"We describe the first demonstration of a 4 GHz quadrature-modulated, wireless system featuring a purpose-designed, ultra-wideband coaxial leaky feeder with vestigial axial-slot coupling. Here we show experimentally that multi-GHz bandwidth is possible with a single size aperture. With the use of Microstripes software (Flomerics), we show that these slots behave as antenna arrays, enhancing radiation characteristics for our purpose. In conjunction with wide bandwidth patch antennas 1.6 Gb/s total data throughput was obtained with error-free, end-to-end operation.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128956187","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
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