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2007 Loughborough Antennas and Propagation Conference最新文献

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Circularly Polarized Array of Ring Antennas using Novel Proximity-Coupled Feeds 基于新型近耦合馈源的环形天线圆极化阵列
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367459
L. Marantis, E. De Witte, K. Tong, P. Brennan
{"title":"Circularly Polarized Array of Ring Antennas using Novel Proximity-Coupled Feeds","authors":"L. Marantis, E. De Witte, K. Tong, P. Brennan","doi":"10.1109/LAPC.2007.367459","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367459","url":null,"abstract":"In this paper, a microstrip multilayer antenna sub-array for conformal array antennas is presented. A novel single-feed proximity coupled circularly polarized antenna, operating at 3 GHz, is proposed as the element of the array. A sequential rotation technique is adopted for the design of the array in order to increase the axial ratio bandwidth. Simulation results are presented and discussed. The array is also experimentally investigated, producing measurement results in good agreement with the simulations.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"56 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":"124641777","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
Estimation of the Single Obstacle Attenuation in MF Band from Field Data 基于现场数据的中频波段单障碍物衰减估计
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367457
S. López, D. de la Vega, D. Guerra, G. Prieto, M. Vélez, P. Angueira
{"title":"Estimation of the Single Obstacle Attenuation in MF Band from Field Data","authors":"S. López, D. de la Vega, D. Guerra, G. Prieto, M. Vélez, P. Angueira","doi":"10.1109/LAPC.2007.367457","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367457","url":null,"abstract":"Emerging digital technologies for MF and HF bands need revision of the propagation and prediction methods. In particular, MF digital radio services are affected by field strength attenuation due to terrain irregularities and specific features of urban areas. The aim of this study is to analyze the signal attenuation caused by terrain obstruction of path profiles. The terrain irregularities will be modelled as triangular wedge shaped obstacles. Two parameters are considered on this study: the distance between the obstacle and the receiver, and the height of the obstacle over the line of sight that links transmitter and receiver. The relation between these two parameters and the signal level attenuation behaviour has been modelled, and assessed by representative curves. Field data used in the analysis were collected from a digital MF band experimental transmission.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"86 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":"132851739","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
UWB Antennas: From Hype, Promise to Reality 超宽带天线:从炒作、承诺到现实
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367424
Zhi Ning Chen
{"title":"UWB Antennas: From Hype, Promise to Reality","authors":"Zhi Ning Chen","doi":"10.1109/LAPC.2007.367424","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367424","url":null,"abstract":"Five years have passed since federal communications commission (FCC) announced the emission mask for commercial ultra-wideband (UWB) applications in April 2002. In the past 5 years, UWB technology in particular high data-rate wireless communications has made a big progress. With such a rapid development, the UWB antenna R&D has also evolved fast from theoretical study to engineering design as well as from general concepts to specific prototypes. This address is to review the progress of UWB antenna technology, show the key achievements in UWB antenna design, and then foresee the promising applications of UWB antennas and arrays.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"116 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":"127980761","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: 34
Scintillation Prediction Models Compared with One Year of Measurements in Aveiro, Portugal 闪烁预测模型与葡萄牙阿威罗一年测量结果的比较
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367492
R. Teixeira, A. Rocha
{"title":"Scintillation Prediction Models Compared with One Year of Measurements in Aveiro, Portugal","authors":"R. Teixeira, A. Rocha","doi":"10.1109/LAPC.2007.367492","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367492","url":null,"abstract":"The paper presents new scintillation statistical results measured at Ka-band in the Iberian peninsula, where data is relatively scarce. The receiver is installed at Aveiro (8degW, 40.5degN), Portugal, and is pointed to HotBird-6 satellite. The data was collected at a rate of 8 S/s during one full year. Results for cumulative distribution of scintillation amplitude (fades and enhancements), scintillation intensity and diurnal variation are presented. The performance of some well known models in the literature - ITU, Karasawa and van de Kamp - are evaluated against the experimental data.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"146 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":"123379782","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
Modal Decomposition Equivalent Circuit Method Application for dual Frequency FSS Analysis 模态分解等效电路法在双频FSS分析中的应用
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367478
R. Dubrovka, J. Vázquez, C. Parini, D. Moore
{"title":"Modal Decomposition Equivalent Circuit Method Application for dual Frequency FSS Analysis","authors":"R. Dubrovka, J. Vázquez, C. Parini, D. Moore","doi":"10.1109/LAPC.2007.367478","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367478","url":null,"abstract":"An application of a modal decomposition equivalent circuit method (MDECM) for analysis of more complex structures like dual frequency FSS has been proposed. The method is based on the equivalent circuit approach and has been recently extended to deal with complicated FSS geometry. Now, the method is able to take into account thick dielectric substrates. What is more important, an initial estimation of the field distribution in a slot aperture can be expressed in terms of two modes despite only one in the fundamental method definition. Theoretical study of FSS composed of dual ring slot elements has revealed a good agreement in comparison with CEM software and periodic method of moments (PMM).","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"23 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":"127756993","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
Spherical Near-Field Antenna Measurements: A Review of Correction Techniques 球面近场天线测量:修正技术综述
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1049/IC.2007.0919
D. Hess
{"title":"Spherical Near-Field Antenna Measurements: A Review of Correction Techniques","authors":"D. Hess","doi":"10.1049/IC.2007.0919","DOIUrl":"https://doi.org/10.1049/IC.2007.0919","url":null,"abstract":"Following an introductory review of spherical near-field scanning measurements, with emphasis on the general applicability of the technique, we present a survey of the various methods to improve measurement accuracy by correcting the acquired data before performing the transform and by special processing of the resulting data following the transform. A post-processing technique recently receiving additional attention is the IsoFilter technique that assists in suppressing extraneous stray signals due to scattering from antenna range apparatus.","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":"133298343","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
On the Use of Metamaterial Surfaces for EBG Antenna Improvements 超材料表面在EBG天线改进中的应用
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367429
E. Rodes, L. Moustapha, L. Mercier, M. Thevenot, T. Monediere, B. Jecko
{"title":"On the Use of Metamaterial Surfaces for EBG Antenna Improvements","authors":"E. Rodes, L. Moustapha, L. Mercier, M. Thevenot, T. Monediere, B. Jecko","doi":"10.1109/LAPC.2007.367429","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367429","url":null,"abstract":"This paper presents several configurations where frequency selective surfaces are used to improve EBG resonator antennas performances. The different detailed structures are mainly focused on the bandwidth limitation of these antennas which has been addressed in various ways. In addition to a wide band antenna, two structures showing a dual band functioning are presented, of which one moreover possesses some frequency agility. The building of several prototypes and their measurement has confirmed the promising theoretical results.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"115 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133136803","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
Printed Dipole Array for MIMO Wireless Networks 用于MIMO无线网络的印刷偶极子阵列
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367445
E. Michailidis, C. Tsimenidis, G. Chester
{"title":"Printed Dipole Array for MIMO Wireless Networks","authors":"E. Michailidis, C. Tsimenidis, G. Chester","doi":"10.1109/LAPC.2007.367445","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367445","url":null,"abstract":"In this article, we present a linear printed dipole array of two radiating elements for potential use in IEEE 802.1 In wireless local area networks. The dipoles are fed through a microstrip balun and are oriented in a fashion that introduces pattern diversity. Advantages of the proposed design are low cost, ease of fabrication and high impedance bandwidth. Mutual coupling between antenna elements is below 20 dB for the measured frequency range (2-6.6 GHz). The measured impedance bandwidth is 29.3 percent (699 MHz) at the lower band and 26.41 percent (1.483 GHz) at the upper band. The array was constructed on Duroid 5870 and the measured S parameters and radiation pattern were found to be in agreement with theory and simulations. The spatial correlation is computed from the measured S parameters and the theoretical capacity is evaluated based on Monte Carlo realisations of the channel and the signal correlation amongst radiating elements.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"189 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":"133663666","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
Equivalent Circuit of Double Spiral Resonators Supporting Backward Waves 支持反向波的双螺旋谐振器等效电路
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367486
T. Kokkinos, A. Feresidis, J. Vardaxoglou
{"title":"Equivalent Circuit of Double Spiral Resonators Supporting Backward Waves","authors":"T. Kokkinos, A. Feresidis, J. Vardaxoglou","doi":"10.1109/LAPC.2007.367486","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367486","url":null,"abstract":"An equivalent circuit representation of double spiral resonators is extracted and presented in this paper. All the electromagnetic phenomena associated with the operation of these resonators within arrays that support backward waves are described in terms of lumped elements and transmission line segments. The resulting equivalent circuit is validated through comparison with full-wave simulations and is employed for the analysis of backward-wave transmission lines.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"41 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":"115606006","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
Antenna Possibilities using 2.5D Textured Surfaces 使用2.5D纹理表面的天线可能性
2007 Loughborough Antennas and Propagation Conference Pub Date : 2007-04-02 DOI: 10.1109/LAPC.2007.367430
V. Fusco
{"title":"Antenna Possibilities using 2.5D Textured Surfaces","authors":"V. Fusco","doi":"10.1109/LAPC.2007.367430","DOIUrl":"https://doi.org/10.1109/LAPC.2007.367430","url":null,"abstract":"This paper discusses some opportunities which present themselves for antenna applications through the use of textured surface microwave wave PCBs. Such structures exhibit anisotropic surface propagation properties which can be exploited for far-field radiation control in resonant antenna structures as well as in the generation of leaky waves in frequency scanning antennas. In addition we show how such structures can be modified in order to provide a simple means for the realisation of an ultra-thin radar absorber material.","PeriodicalId":349412,"journal":{"name":"2007 Loughborough Antennas and Propagation Conference","volume":"34 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":"121731561","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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