发布求助
文献互助 智能选刊 最新文献

2016 10th European Conference on Antennas and Propagation (EuCAP)最新文献

筛选
英文 中文
Dual-polarised lens feed arrays and end-fire antennas in E-band e波段双偏振透镜馈电阵列和端射天线
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7481256
J. Ala-Laurinaho, A. Lamminen, J. Saily, R. Luomaniemi, M. Kaunisto, T. Kovarik, Pekka J. Wainio, A. Raisanen
{"title":"Dual-polarised lens feed arrays and end-fire antennas in E-band","authors":"J. Ala-Laurinaho, A. Lamminen, J. Saily, R. Luomaniemi, M. Kaunisto, T. Kovarik, Pekka J. Wainio, A. Raisanen","doi":"10.1109/EUCAP.2016.7481256","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481256","url":null,"abstract":"The growing subscriber demand for better mobile broadband experiences is encouraging the industry to look ahead at the future 5G networks: how can they be readied to meet extreme capacity and performance demands for both access and backhaul applications. The large bandwidth of spectrum available in E-band (71-76 GHz & 81-86 GHz) makes for an attractive resource to support such capacity gains. One of the numerous challenges that face the developers of commercial E-band solutions is how to efficiently implement dual-polarised antennas needed to support dual-stream MIMO applications. This paper presents a novel dual-polarised feeder array for dielectric lens antennas useable for access and backhaul applications as well as a dual-polarised end-fire antenna solution suitable to expand the field of view for user devices.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"39 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77380203","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
Mitigation of multiple reflections in antenna pattern retrieval method 天线方向图检索方法中多重反射的抑制
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7482016
Gaurav Khairkar, J. Ala-Laurinaho, V. Viikari, V. Semkin, A. Raisanen
{"title":"Mitigation of multiple reflections in antenna pattern retrieval method","authors":"Gaurav Khairkar, J. Ala-Laurinaho, V. Viikari, V. Semkin, A. Raisanen","doi":"10.1109/EUCAP.2016.7482016","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7482016","url":null,"abstract":"In this paper, a recently proposed method for antenna radiation pattern retrieval is studied. The method is based on measurements of reflection coefficients when a reflective load is moved in front of the antenna under test. It has been proposed to be used for on-wafer antenna measurements in the probe station environment. However, the method may be subject to multiple reflections and, therefore, time gating is studied in order to mitigate the effect of reflections. This paper evaluates how time gating affects the determination of the reflection coefficients. The time gating is demonstrated by simulations of a pyramidal horn antenna at 30 GHz. Practical implementation and experimental results of time gating at millimeter wavelengths are presented using a probe-fed 4 by 4 patch antenna array.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"11 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88695355","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
Effects of user's hand on the measurement setup in MIMO over-the-air testing MIMO无线测试中用户手对测量设置的影响
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7481987
Miah Md. Suzan, A. Khatun, K. Haneda, L. Hentila, A. Karilainen
{"title":"Effects of user's hand on the measurement setup in MIMO over-the-air testing","authors":"Miah Md. Suzan, A. Khatun, K. Haneda, L. Hentila, A. Karilainen","doi":"10.1109/EUCAP.2016.7481987","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481987","url":null,"abstract":"In this paper, we provide the guidelines for the selection of suitable measurement setups for reliable and cost-effective multi-probe based over-the-air test system to measure the practical MIMO device with hand effect, in reference to the free-space. The guidelines are provided for the required number of probes, minimum probe distance from the device under test (DUT), and optimum size of DUT's rotation. The planewave synthesis technique based on spherical wave theory is used to emulate a reference channel model. Practical antennas in a mobile device operating at 806 MHz with the dimensions of 12.95 cm × 6.67 cm × 0.92 cm are used as DUT. The simulated results show that minimum 6 dual-polarized probes are required for the DUT with hand effect, while 4 dual-polarized probes are needed for the DUT in free space. The minimum probe distance is 100 cm and the optimum size of the azimuthal rotation step of the DUT in the measurement is 45° regardless of the scenarios and users' hand effect.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"4 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77506639","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
Effect of shape and surroundings on harmonic transponder performance 形状和环境对谐波应答器性能的影响
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7481847
K. Rasilainen, V. Viikari
{"title":"Effect of shape and surroundings on harmonic transponder performance","authors":"K. Rasilainen, V. Viikari","doi":"10.1109/EUCAP.2016.7481847","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481847","url":null,"abstract":"Harmonic transponders utilise two distinct, harmonically spaced frequencies to communicate with the reader device. For efficient performance, the transponder antenna needs to be properly matched at these frequencies. This work investigates how the transponder performance is affected when the shape of the transponder changes through bending or when the transponder is in the proximity of an object with varying material parameters. The obtained results show that the performance of the transponder is more affected by the properties of the object it is attached to. With different bending states, the harmonic response of the transponder does not change significantly, meaning that the design could be suitable for conformal applications.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"35 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72785767","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-enhancing reflector Radiation-enhancing反射器
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7481933
C. Valagiannopoulos, S. Tretyakov
{"title":"Radiation-enhancing reflector","authors":"C. Valagiannopoulos, S. Tretyakov","doi":"10.1109/EUCAP.2016.7481933","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481933","url":null,"abstract":"We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"17 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84220349","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
Realization of RFID tag antenna with 3D printing technology 用3D打印技术实现RFID标签天线
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-05-31 DOI: 10.1109/EUCAP.2016.7481675
S. Naushahi, K. Rasilainen, V. Viikari
{"title":"Realization of RFID tag antenna with 3D printing technology","authors":"S. Naushahi, K. Rasilainen, V. Viikari","doi":"10.1109/EUCAP.2016.7481675","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481675","url":null,"abstract":"The use of three-dimensional (3D) printing technology for manufacturing complex-shaped objects with high accuracy has increased in recent years. In this paper, experimental work is carried out to study the feasibility of using 3D printing technology for realizing a tag antenna for Radio Frequency Identification (RFID) applications. The proposed tag antenna is designed for the North American RFID frequency band (902-928MHz). The antenna is 3D printed with dielectric, acrylonitrile butadiene styrene (ABS) material, and it is post-processed using electroplating to make the antenna conductive. The performance of the manufactured antenna is measured and compared with simulations. Measurement results of antenna impedance show that the manufactured antenna exhibits higher electrical losses than predicted by simulations. In order to check the repeatability of the manufacturing process, two tags are developed by connecting an RFID chip to the fabricated antennas, and by comparing their power sensitivity and read range.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"19 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86734247","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: 7
Radiation properties of moving constellations of (nano) satellites: A complexity study 移动(纳米)卫星星座的辐射特性:一个复杂性研究
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-04-14 DOI: 10.1109/EUCAP.2016.7481489
W. Bruinsma, R. Hes, S. Bosma, I. Lager, M. Bentum
{"title":"Radiation properties of moving constellations of (nano) satellites: A complexity study","authors":"W. Bruinsma, R. Hes, S. Bosma, I. Lager, M. Bentum","doi":"10.1109/EUCAP.2016.7481489","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481489","url":null,"abstract":"The (computational) complexity involved by beamforming in moving constellations of (nano) satellites is investigated by means of illustrative numerical experiments. While the number of radiators in such three-dimensional (3D) array antennas is not large, evaluating their radiation patterns entails challenging computational intricacies in view of the satellites being in motion and each satellite performing general 3D rotations. As a result, the relevant array radiation patterns become time-dependent, the elementary radiation patterns being themselves time-dependent. The discussed experiments will illustrate the time evolution of the radiation pattern for given individual satellite orbits and rotation laws. At the same time, they will provide a basis for estimating the computational complexity involved by predicting the complete beamforming in future space-bound remote sensing missions using constellations of (nano) satellites.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"2019 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86808735","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
24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation 通过植被的24 GHz毫米波无线电传播:郊区树杂波衰减
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-04-13 DOI: 10.1109/EUCAP.2016.7481471
Ignacio Rodriguez, Renato B. Abreu, E. Almeida, Mads Lauridsen, Alexandre Loureiro, P. Mogensen
{"title":"24 GHz cmwave radio propagation through vegetation: Suburban tree clutter attenuation","authors":"Ignacio Rodriguez, Renato B. Abreu, E. Almeida, Mads Lauridsen, Alexandre Loureiro, P. Mogensen","doi":"10.1109/EUCAP.2016.7481471","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481471","url":null,"abstract":"This paper presents a measurement-based analysis of cm-wave radio propagation through vegetation at 24 GHz. A set of dedicated directional measurements were performed with horn antennas located close to street level inside a densely-vegetated area illuminated from above. The full azimuth was examined for the elevation range from +10 to +30 degrees at each of the measurement positions in order to explore the directional characteristics of the channel. The detailed analysis of the spatial multipath components scattered from the trees suggests, in average, the presence of 5 strong tree-scattered components per location with an azimuthal deviation of approximately 20 degrees between the strongest and the direct transmitter-receiver components. A diversity gain of approximately 7 dB is estimated, plus 2 dB extra in the case of considering multi-beam combining techniques. Tree clutter attenuation was found to be in the range 2.6-3.8 dB/m for the first meters inside the vegetated area. This attenuation can be predicted by the current ITU-R models, although some modifications are suggested. Single-tree attenuation was estimated to be approximately 20 dB. The different models and observations presented along the paper are useful for simulation and radio network planning of future wireless systems operating at 24 GHz in presence of vegetation.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"15 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74570060","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: 23
A transportable hybrid antenna-transmitter system for the generation of elliptically polarized waves for NVIS propagation research 用于NVIS传播研究的椭圆极化波产生的可移动混合天线发射机系统
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-04-12 DOI: 10.1109/EUCAP.2016.7481549
B. Witvliet, G. Laanstra, Erik van Maanen, R. Alsina-Pagès, M. Bentum, C. Slump, R. Schiphorst
{"title":"A transportable hybrid antenna-transmitter system for the generation of elliptically polarized waves for NVIS propagation research","authors":"B. Witvliet, G. Laanstra, Erik van Maanen, R. Alsina-Pagès, M. Bentum, C. Slump, R. Schiphorst","doi":"10.1109/EUCAP.2016.7481549","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481549","url":null,"abstract":"For empirical research on Near Vertical Incidence Skywave (NVIS) characteristic wave propagation, a beacon transmitter system is needed that can be programmed to emit precisely defined elliptically and circularly polarized waves at high elevation angles. This paper proposes a novel hybrid antenna-transmitter system, a combination of a synchronous dual channel transmitter and a turnstile antenna. The polarization emitted by the turnstile antenna is defined by the power ratio and phase difference of the outputs of the transmitter. Operating frequency is between 3 to 10 MHz. An automated and transportable solution is described, which can be fed by battery or solar power. Power consumption is 5.7 W.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":" 20","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2016-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91410302","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
Shaped beam synthesis of sparse arrays of coupled elements through a modified Orthogonal Matching Pursuit algorithm and multiple dictionaries 基于改进正交匹配追踪算法和多字典的稀疏耦合元阵列形束合成
2016 10th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2016-04-10 DOI: 10.1109/EUCAP.2016.7481201
J. Rubio, J. Córcoles, J. Izquierdo, Rafel Gomez-Alcala, J. M. Gil
{"title":"Shaped beam synthesis of sparse arrays of coupled elements through a modified Orthogonal Matching Pursuit algorithm and multiple dictionaries","authors":"J. Rubio, J. Córcoles, J. Izquierdo, Rafel Gomez-Alcala, J. M. Gil","doi":"10.1109/EUCAP.2016.7481201","DOIUrl":"https://doi.org/10.1109/EUCAP.2016.7481201","url":null,"abstract":"A method to design sparse arrays based on the Orthogonal Matching Pursuit algorithm and spherical wave expansions is proposed. The Orthogonal Matching Pursuit algorithm is modified in order to take mutual coupling effects into account in the design of sparse arrays. Different Dictionaries are used, going beyond a recently proposed application of the method to array thinning. Further reduction of elements can be achieved at the expense of increasing the computational time in the design process.","PeriodicalId":6509,"journal":{"name":"2016 10th European Conference on Antennas and Propagation (EuCAP)","volume":"60 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2016-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73793162","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
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