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2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)最新文献

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Identification of clusters in the fingerprinting method using power measurements 使用功率测量的指纹识别方法中的聚类识别
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958687
M. Algar, O. Gutiérrez, Miguel Ángel Navarro, J. M. Gómez, F. Saez de Adana
{"title":"Identification of clusters in the fingerprinting method using power measurements","authors":"M. Algar, O. Gutiérrez, Miguel Ángel Navarro, J. M. Gómez, F. Saez de Adana","doi":"10.1109/IWAT.2014.6958687","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958687","url":null,"abstract":"Detection method plays important role in applications of high frequencies techniques for locations systems. One of the most popular techniques is the fingerprinting that operates the relationship between signals. It is considered that in each point in the building has a unique fingerprint or received power by the access points. In this work it was made measurements into an office scenario and it was used cluster identification method to define the fingerprints. Two clustering algorithms, k-means and rek-means was implemented in order to compare both methods.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124056911","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
60GHz pattern reconfigurable quasi-Yagi antenna — Proof through computational design 60GHz模式可重构准八木天线-通过计算设计验证
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958594
Y. Yang, K. Y. Chan, R. Ramer
{"title":"60GHz pattern reconfigurable quasi-Yagi antenna — Proof through computational design","authors":"Y. Yang, K. Y. Chan, R. Ramer","doi":"10.1109/IWAT.2014.6958594","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958594","url":null,"abstract":"The paper demonstrates the possibility of designing pattern reconfigurable quasi-Yagi antenna. Adjusting the length of dipole arms and delay line, the E-plane radiation direction is steered from -20° to +20°, in 5° steps, without compromising the realized radiation gain or shifting the operating spectrum as high as 60 GHz band. In this work, nine individual Yagi antennas with different beam directions are designed. They all have bands centered at 60 GHz, with wide bandwidths covered from 55 GHz to 65 GHz.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126426849","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: 6
Wideband adaptive near/field interference cancellation antenna system 宽带自适应近场干扰消除天线系统
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958688
R. Shar
{"title":"Wideband adaptive near/field interference cancellation antenna system","authors":"R. Shar","doi":"10.1109/IWAT.2014.6958688","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958688","url":null,"abstract":"A wideband adaptive interference cancellation antenna system is simulated. This adaptive antenna system is effective for a victim antenna array in the far or near-field of an interference source which is relevant for installations of multiple communications systems that have antennas in close proximity to one another. Electromagnetic simulation of antennas and digital signal processing techniques are applied to cancel the effect of a near-field interferer on an array of antenna elements.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125604642","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
Near-field characteristics of a wideband travelling-wave antenna based on a tapered Half-Mode Substrate-Integrated Waveguide 基于锥形半模基板集成波导的宽带行波天线近场特性研究
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958670
N. Nguyen-Trong, T. Kaufmann, C. Fumeaux
{"title":"Near-field characteristics of a wideband travelling-wave antenna based on a tapered Half-Mode Substrate-Integrated Waveguide","authors":"N. Nguyen-Trong, T. Kaufmann, C. Fumeaux","doi":"10.1109/IWAT.2014.6958670","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958670","url":null,"abstract":"In this paper the near-field distribution of a travelling-wave antenna based on a Half-Mode Substrate-Integrated Waveguide (HMSIW) is investigated in order to verify the guided-wave characteristics and the radiation mechanism of this antenna type. Open-ended coaxial probes are utilized to capture the electromagnetic power density at different positions along the antenna aperture. The measurement and simulation results show a good correspondence which validates the measurement technique. The presented results show fundamental differences between the tapered HMSIW antenna and the traditional uniform leaky-wave antenna (LWA). Unlike the uniform LWA, the radiation of the tapered antenna mainly happens close to cut-off position, thus small radiating effective length and an omni-directional radiation pattern are obtained.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134037238","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
Broadband printed dipole antenna with T-shape loadings 带t形负载的宽带印刷偶极子天线
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958676
C. Wang, Y. Ge
{"title":"Broadband printed dipole antenna with T-shape loadings","authors":"C. Wang, Y. Ge","doi":"10.1109/IWAT.2014.6958676","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958676","url":null,"abstract":"Broadband printed dipole antennas are studied in this paper. By applying a three-step microstrip transmission line as the integrated balun and symmetrically connecting a pair of identical T-shape metallic loadings with the two wings of the dipole, the bandwidth of the traditional printed dipole can be significantly enhanced. Simulations show that the proposed dipole antenna achieves a bandwidth of 80% and good radiation performance over the operating band is also obtained.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133923861","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
Phase-gradient metasurfaces for beam steerable antennas 波束可控天线的相位梯度超表面
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958635
A. Ghasemi, S. Burokur, A. Dhouibi, A. de Lustrac
{"title":"Phase-gradient metasurfaces for beam steerable antennas","authors":"A. Ghasemi, S. Burokur, A. Dhouibi, A. de Lustrac","doi":"10.1109/IWAT.2014.6958635","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958635","url":null,"abstract":"Metasurfaces presenting a phase-gradient are designed at 10 GHz and are proposed to steer an antenna's radiated beam from broadside towards endfire direction. The metasurfaces are composed of both inductive and capacitive grids and the phase-gradient is achieved by modifying the elements in the inductive grid. Such phase-gradient metasurfaces are utilized as Partially Reflecting Surfaces (PRS) in Fabry-Pérot (FP) leaky-wave antennas (LWAs). Depending on the gradient used, beam steering up to 60° has been observed numerically and verified experimentally.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"264 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131584733","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: 6
Bandpass filters based on coupled split ring resonators for surface waves on planar Goubau lines 基于耦合分环谐振器的平面沟包线表面波带通滤波器
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958595
A. K. Horestani, W. Withayachumnankul, A. Chahadih, A. Ghaddar, M. Zehar, D. Abbott, T. Akalin, C. Fumeaux
{"title":"Bandpass filters based on coupled split ring resonators for surface waves on planar Goubau lines","authors":"A. K. Horestani, W. Withayachumnankul, A. Chahadih, A. Ghaddar, M. Zehar, D. Abbott, T. Akalin, C. Fumeaux","doi":"10.1109/IWAT.2014.6958595","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958595","url":null,"abstract":"This paper demonstrates a method for enhancing the performance of recently introduced compact bandpass filters for terahertz surface waves on single wire waveguides, the so-called planar Goubau lines (PGLs). It is firstly shown numerically and validated experimentally that a gapped PGL loaded with a pair of split ring resonators (SRRs) acts as a bandpass filter. The concept and simulation result are validated through experiment. Furthermore, in order to achieve an improved frequency response, a third-order filter based on coupled SRRs is proposed. It is shown that while the size of the proposed filter is further reduced, it additionally benefits from a higher inband transmission, improved selectivity, and a controllable wide bandwidth.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"57 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133613850","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
Design of polarization-dependent reflectarray for terahertz waves 太赫兹波偏振相关反射天线的设计
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958639
T. Niu, W. Withayachumnankul, D. Abbott, C. Fumeaux
{"title":"Design of polarization-dependent reflectarray for terahertz waves","authors":"T. Niu, W. Withayachumnankul, D. Abbott, C. Fumeaux","doi":"10.1109/IWAT.2014.6958639","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958639","url":null,"abstract":"A reflectarray is designed for polarization-dependent beam deflection at 1 THz. Each unit cell is composed of two sets of dipole resonators, corresponding to orthogonal polarizations. The orthogonal dipoles are arranged in two interlaced triangular-lattice arrays. One subarray containing multiple unit cells provides a gradient phase response to complete a 2π phase cycle over its length. This design demonstrates that it is possible to separate the polarization components of an incident beam by deflecting them into two different directions in a given plane. Numerical results predict successful implementation of the principle with available materials and within realistic manufacturing tolerances for operation at a frequency of 1 THz.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132648912","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
Utilization of tunable components for 4G frequency reconfigurable mobile terminal antenna 可调元件在4G频率可重构移动终端天线中的应用
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958596
A. Cihangir, F. Ferrero, C. Luxey, G. Jacquemod, A. Reinhardt, L. Dussopt, N. Lorphelin, C. Pavageau, P. Brachat
{"title":"Utilization of tunable components for 4G frequency reconfigurable mobile terminal antenna","authors":"A. Cihangir, F. Ferrero, C. Luxey, G. Jacquemod, A. Reinhardt, L. Dussopt, N. Lorphelin, C. Pavageau, P. Brachat","doi":"10.1109/IWAT.2014.6958596","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958596","url":null,"abstract":"In this paper, two antenna designs using active components are presented for reflection coefficient tunability. The antennas are designed within the scope of the Artemos project and use MEMS switches and BST tunable capacitors internally available in the project. The first antenna uses an SPDT MEMS switch to select between one of the two target frequency bands (700-960MHz and 1.7-2.7GHz). The second antenna uses a tunable capacitor with a tuning range of 2.5-4pF, to frequency tune the reflection coefficient between 700 and 960MHz., The coverage of the 1.7-2.7GHz band is achieved by a monopole antenna who is fed separately.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"7 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127113655","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
Performance comparison of wideband circularly-polarized antenna arrays comparison of microstrip-line- and metamaterial-line-based feed networks 宽带圆极化天线阵列的性能比较微带线和超材料线馈电网络的比较
2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT) Pub Date : 2014-03-04 DOI: 10.1109/IWAT.2014.6958608
K. Chung, S. Kharkovsky
{"title":"Performance comparison of wideband circularly-polarized antenna arrays comparison of microstrip-line- and metamaterial-line-based feed networks","authors":"K. Chung, S. Kharkovsky","doi":"10.1109/IWAT.2014.6958608","DOIUrl":"https://doi.org/10.1109/IWAT.2014.6958608","url":null,"abstract":"This paper presents performance comparison of two circularly-polarized antenna arrays where H-shaped antenna elements are used and arranged in fashion of planar sequential rotation in near-field region. The two identical arrays are fed by using the state-of-the-art metamaterial lines and conventional microstrip-lines, respectively. Through the comparison, it is shown that the array excited by metamaterial-line-based feed network can achieve a wider axial-ratio (3-dB) bandwidth than the conventional counterpart, 89.3% versus 54.8%, while similar gain performances between arrays are observed.","PeriodicalId":337951,"journal":{"name":"2014 International Workshop on Antenna Technology: Small Antennas, Novel EM Structures and Materials, and Applications (iWAT)","volume":"2 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132089677","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
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