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2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications最新文献

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Performance Evaluation of Low Complex Smart Antennas in a Mobile Station for the Downlink of 3G 3G下行移动站低复杂度智能天线性能评估
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370146
Jianwu Zhang, Wen Sun, Chengzhong Xu
{"title":"Performance Evaluation of Low Complex Smart Antennas in a Mobile Station for the Downlink of 3G","authors":"Jianwu Zhang, Wen Sun, Chengzhong Xu","doi":"10.1109/IWAT.2007.370146","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370146","url":null,"abstract":"Recent advances of DSP, microprocessor (MPU), micro-electronics and the antenna in miniature, makes it possible to employ smart antennas (SA) in a mobile station (MS) in next generation mobile communications (3G). Because the processing capacity of MS is relatively weak, to guarantee the smart antenna performance, its algorithm complexity of the smart antenna is very important. In the paper, we propose a low complex algorithm using the auxiliary pilot signals to estimate the channel parameter in the downlink. Via simulation, we evaluate the performance of SA with two elements in terms of the bit error rate (BER). The simulation results show that using SA can improve the performance of the MS significantly.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130096431","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
MIMO Joint Transmission Technology with Correlated Antenna Elements 相关天线单元的MIMO联合传输技术
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370181
Bing Wu, Xianwei Xie
{"title":"MIMO Joint Transmission Technology with Correlated Antenna Elements","authors":"Bing Wu, Xianwei Xie","doi":"10.1109/IWAT.2007.370181","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370181","url":null,"abstract":"The downlink joint transmission (JT) scheme utilizing the reciprocity of the time division duplex (TDD) channel has been proposed, in which the transmit signals to all mobile station (MS) are jointly generated under the consideration of the channel properties estimated from the uplinks. The scheme can observably reduce the computation and the complexity of mobile station, such that only a linear filter is required in MS to detect the received signals. JT was extended to multi-user MIMO, i.e. MMO JT. It was assumed in all previous works that antennas both at BS and MS are uncorrelated, which is not the case in a real-life system. This paper focus on MIMO JT with correlated antennas both at BS and MS, but antenna pairs on BS and MS respectively are uncorrelated. The digital results for MIMO JT with correlated antennas was presented and compared to the performance of MIMO JT with uncorrelated antennas.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124988246","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
A novel tapered slot CPW-fed antenna for ultra-wideband applications and its on/off-body performance 一种用于超宽带应用的新型锥形槽cpw馈电天线及其身内外性能
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370184
A. Rahman, Y. Hao
{"title":"A novel tapered slot CPW-fed antenna for ultra-wideband applications and its on/off-body performance","authors":"A. Rahman, Y. Hao","doi":"10.1109/IWAT.2007.370184","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370184","url":null,"abstract":"This paper proposes a novel miniaturized CPW-fed antenna for ultra-wideband applications. This antenna employs two oblique tapered slots as opposed to conventional CPW-fed antenna. The antenna shows good group delay and return loss characteristics as it prevents strong resonance and large group delay variation throughout the band. Radiation pattern looks quasi-omnidirectional with the maximum gain limited to around 4 dBi. On/off body impulse response also looks satisfactory.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121666009","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: 20
Investigating the mutual coupling between mm-wave slot-ring antennas using the FD-TD method 利用FD-TD方法研究毫米波槽环天线间的相互耦合
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370188
M.-A. Setta, C. Parini
{"title":"Investigating the mutual coupling between mm-wave slot-ring antennas using the FD-TD method","authors":"M.-A. Setta, C. Parini","doi":"10.1109/IWAT.2007.370188","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370188","url":null,"abstract":"In this paper, aspects of modelling millimetre-wave arrays with the FD-TD will be presented. Mutual coupling results obtained with the in-house FD-TD code are also included.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114973123","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
A Novel Compact Dual-band Printed Monopole Antenna 一种新型紧凑型双频印刷单极天线
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370097
Jiawen Sun, Zhenghe Feng
{"title":"A Novel Compact Dual-band Printed Monopole Antenna","authors":"Jiawen Sun, Zhenghe Feng","doi":"10.1109/IWAT.2007.370097","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370097","url":null,"abstract":"The design of an antenna, consisting of two strip monopoles printed on the same side of an electronically thin dielectric substrate and using 50 Omega microstrip feed line, is presented. The proposed antenna can provide two separate impedance bandwidth of 450 MHz (about 17.5% centered at 2.575 GHz) and 1 GHz (about 18.5% centered at 5.4 GHz) with return loss S11 below -10 dB. It easily covers the required bandwidths for wireless local area network (WLAN). The dual-band antenna is simple in design, and the lengths of the antenna's larger and smaller strips can easily control the lower and higher resonant frequencies, respectively. The widths of the radiation elements are changed to get better impedance matching. Details of the proposed antenna design and results are presented and discussed.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122622776","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
The Effect of Dielectric Loading on Printed Monopoles 介质载荷对印刷单极子的影响
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370143
D. Tsamakis, Z. Wu
{"title":"The Effect of Dielectric Loading on Printed Monopoles","authors":"D. Tsamakis, Z. Wu","doi":"10.1109/IWAT.2007.370143","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370143","url":null,"abstract":"This paper presents the study of the effect of dielectric loading on the performance of printed monopoles. An initial antenna structure is presented and the alterations in its resonant frequency and impedance bandwidth with varying parameters of the ceramic brick, forming the load of the design, are investigated. Comparison with the results for different structures is also illustrated. General rules on the effect of each load characteristic are drawn from the study.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123969451","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
Radiation Pattern of a 2.4/ 5.2GHz Laptop Internal Antenna: Near Field Spherical Range Measurements and Full Wave Analysis 2.4/ 5.2GHz笔记本内置天线的辐射方向图:近场球面距离测量和全波分析
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370105
J. Guterman, Yahya Rahmat-Samii, Antonio A. Moreira, Cust6dio Peixeiro
{"title":"Radiation Pattern of a 2.4/ 5.2GHz Laptop Internal Antenna: Near Field Spherical Range Measurements and Full Wave Analysis","authors":"J. Guterman, Yahya Rahmat-Samii, Antonio A. Moreira, Cust6dio Peixeiro","doi":"10.1109/IWAT.2007.370105","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370105","url":null,"abstract":"The omnidirectionality of a laptop internal antenna can be severely affected by the laptop electrically large structure. Therefore, an accurate evaluation of the radiation pattern requires a proper modelling of the laptop housing effects. Due to the large laptop dimensions, this antenna-PC integrated approach leads to a minimum far field distance of at least 12 meters at the WLAN frequency bands. Such a large distance is not easily accommodated in indoor far-field measurement ranges. A near field measurement technique seems appropriate to solve the problem. This study reports 2.4/5.2 GHz laptop internal antenna housing effects on the far field radiation pattern. The full wave simulations are compared with measurement results obtained in UCLA near field spherical range. A very good agreement obtained for all the investigated scenarios confirms that the near field technique is adequate to deal with this type of measurement problems.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129818554","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: 10
Integrated Microwave and Millimeter Wave Antennas Based on SIW and HMSIW Technology 基于SIW和HMSIW技术的微波和毫米波集成天线
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370082
W. Hong, Bing Liu, G. Luo, Q. Lai, J.F. Xu, Z. Hao, F. He, X.X. Yin
{"title":"Integrated Microwave and Millimeter Wave Antennas Based on SIW and HMSIW Technology","authors":"W. Hong, Bing Liu, G. Luo, Q. Lai, J.F. Xu, Z. Hao, F. He, X.X. Yin","doi":"10.1109/IWAT.2007.370082","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370082","url":null,"abstract":"In this paper, the research advances in integrated microwave and millimeter wave antennas based the substrate integrated waveguide (SIW) and half-mode substrate integrated waveguide (HMSIW) technology are reviewed, including the SIW/HMSIW slot array antennas, leakage wave antennas, omnidirectional antennas, monopulse antennas, filtennas, dielectric resonator antennas and rectennas etc. The achievements summarized here are mainly limited to the recent work of the authors","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127026265","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: 38
Periodic Materials and Printed Structures for Miniature Antennas 用于微型天线的周期材料和印刷结构
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370073
J. Volakis, K. Sertel, H. Verweij
{"title":"Periodic Materials and Printed Structures for Miniature Antennas","authors":"J. Volakis, K. Sertel, H. Verweij","doi":"10.1109/IWAT.2007.370073","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370073","url":null,"abstract":"Engineered materials, such as new composites, electromagnetic bandgap, and periodic structures have attracted considerable interest in recent years due to their remarkable and unique electromagnetic properties. Among this class of media are the magnetic photonic and degenerate bandgap crystals. These periodic media have the concurrent characteristics of wave slow-down and impedance matching at their dielectric interface. The first allows for miniaturization, and the latter is equivalent to radiation efficiency. Overall these properties are a consequence of the anisotropic nature of the periodic media, allowing for internal phase shifting that leads to ray collimation for best aperture utilization. To a degree, they emulate zero index materials, and thus (planar) layers of the material serve the same purpose as a reflector dish. This important property of the MPA and DBE structures are discussed at the meeting. The main focus of this work is two-fold: 1. The realization (in terms of material availability and fabrication) of the proposed periodic media, and their theoretical and measured performance for antenna applications. Specifically, we will pursue feed arrangements, impedance matching and metallizations/printings for maximum aperture efficiency. 2. Introduction of a concept that allows for emulation of the anisotropic properties of MPA/DBE media using a novel coupled line printed approach. This concept allows for the realization of the wave slow-down and impedance matching within a printed microwave structure, leading to new design methodologies for microwave components, including couplers, filters and printed antenna devices.","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127401031","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
Modelling and Analysis of Composite Antenna Superstrates Based on Grids of Dipoles and Wires 基于偶极子和导线网格的复合天线叠层的建模与分析
2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications Pub Date : 2007-03-21 DOI: 10.1109/IWAT.2007.370136
E. Sáenz, P. Ikonen, R. Gonzalo, I. Ederra, P. de Maagt, S. Tretyakov
{"title":"Modelling and Analysis of Composite Antenna Superstrates Based on Grids of Dipoles and Wires","authors":"E. Sáenz, P. Ikonen, R. Gonzalo, I. Ederra, P. de Maagt, S. Tretyakov","doi":"10.1109/IWAT.2007.370136","DOIUrl":"https://doi.org/10.1109/IWAT.2007.370136","url":null,"abstract":"A new planar superstrate, proposed for the gain enhancement of dipole antennas, is modelled and analyzed. The superstrate consists of two closely located parallel grids of short dipoles and one grid of continuous wires in between the dipole grids. Also the situation when the wire grid is absent is studied. An analytical model based on the local field approach has been derived in order to extract the transmission and reflection responses of the superstrates. The responses have been compared with the results predicted by Ansoft-HFSS. A finite size superstrate has been designed for a dipole antenna, and the simulations show that a significant gain enhancement can be achieved with the proposed design","PeriodicalId":446281,"journal":{"name":"2007 International workshop on Antenna Technology: Small and Smart Antennas Metamaterials and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132907198","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
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