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2023 17th European Conference on Antennas and Propagation (EuCAP)最新文献

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On the Design of Reconfigurable Passive Skins towards a Smart EM Environment for Next Generation Wireless Communications - Challenges, Solutions, and Trends 面向下一代无线通信智能EM环境的可重构无源蒙皮设计——挑战、解决方案和趋势
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133744
G. Oliveri, L. Poli, P. Rocca, M. Salucci, F. Zardi, A. Massa
{"title":"On the Design of Reconfigurable Passive Skins towards a Smart EM Environment for Next Generation Wireless Communications - Challenges, Solutions, and Trends","authors":"G. Oliveri, L. Poli, P. Rocca, M. Salucci, F. Zardi, A. Massa","doi":"10.23919/EuCAP57121.2023.10133744","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133744","url":null,"abstract":"Reconfigurable passive electromagnetic skins (RP-EMSs) are considered one of the fundamental technologies to implement the \"Smart EM Environment\" paradigm in next generation wireless communications. Despite their popularity and the already demonstrated successful applications of such a technology, several challenges still need to be addressed concerning the design, optimization, control, and implementation of cost-effective and efficient RP-EMSs. A review of the most recent advances and trends in this framework will be discussed in this work.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121738586","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
Millimeter-Wave Array Antenna Architectures Employing Joint Power Combining and Beam Steering for Next-Generation Backhaul Applications 采用联合功率组合和波束导向的毫米波阵列天线架构用于下一代回程应用
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133079
A. Vilenskiy, Sohaib Yaqoob Chaudhry, H. Chou, M. Ivashina
{"title":"Millimeter-Wave Array Antenna Architectures Employing Joint Power Combining and Beam Steering for Next-Generation Backhaul Applications","authors":"A. Vilenskiy, Sohaib Yaqoob Chaudhry, H. Chou, M. Ivashina","doi":"10.23919/EuCAP57121.2023.10133079","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133079","url":null,"abstract":"We investigate the capabilities and limitations of joint power-combining and beam-steering techniques for millimeter-wave antenna applications. In this analysis, both functionalities are realized simultaneously through a power-combining and beamforming (PC-BF) network interconnecting an input array of active channels with an array of antenna elements. The first part of the paper provides a review of state-of-the-art hardware architectures of such PC-BF networks and examines their suitability for millimeter-wave applications. The architectures are grouped into two classes depending on the array embedded element patterns properties. Next, a unified PC-BF network is proposed where both functionalities are implemented in a single millimeter-wave waveguiding block. A full-wave model of such a network with 6 inputs and 7 outputs is investigated, with its application demonstrated for a W-band focal-plane array feeding a backhaul reflector antenna.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121742533","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
Short-Term Forecast of the Signal Propagation Conditions, Based on Numerical Weather Prediction, Radar, and SatCom Ground Terminal Data 基于数值天气预报、雷达和卫星通信地面终端数据的信号传播条件短期预报
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10132973
T. Tjelta, J. Håkegård, M. Rytir, K. Grythe
{"title":"Short-Term Forecast of the Signal Propagation Conditions, Based on Numerical Weather Prediction, Radar, and SatCom Ground Terminal Data","authors":"T. Tjelta, J. Håkegård, M. Rytir, K. Grythe","doi":"10.23919/EuCAP57121.2023.10132973","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10132973","url":null,"abstract":"Numerical weather prediction products, radar products, and user terminal observations are used to estimate propagation conditions for the nearest hours lead time. Validation results show good correspondence between predictions and observations using beacon data and user terminal data, but with an increasing error with longer lead time forecasts. Initial results include system estimates of an improved SatCom system with smart gateways taking short term propagation condition forecasts into account.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131967641","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
Optimization-Assisted Design of Wide-Band Structured Microwave Absorbers 宽带结构微波吸收器的优化辅助设计
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133287
E. Vandelle, S. Héron, Thi Quynh Van Hoang, B. Loiseaux
{"title":"Optimization-Assisted Design of Wide-Band Structured Microwave Absorbers","authors":"E. Vandelle, S. Héron, Thi Quynh Van Hoang, B. Loiseaux","doi":"10.23919/EuCAP57121.2023.10133287","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133287","url":null,"abstract":"The obtention of highly absorptive surfaces over a wide frequency band and a wide angular range requires the complex manipulation of both electromagnetic properties and geometrical structure of materials. As a matter of fact, a periodic arrangement of sub-wavelength patterns can greatly improve the performance of an absorber with minimum thickness over a large set of conditions. Yet, this inevitably leads to a significant number of geometrical parameters making the design of absorbers fastidious and time-consuming. This paper presents a fast design methodology for microwave absorbers. An optimizer based on the algorithm Covariance Matrix Adaptation Evolution Strategy (CMA-ES) iterates over the results provided by a simulation code based on the Fourier Modal Method (FMM), in order to reach a targeted absorptivity of 1. To illustrate this fast design methodology, we present the optimization of a 10mm-thick structured microwave absorber made of a magneto-dielectric material.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132039213","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
Analysis of Huygens’ Metasurfaces for the Design of Transmit-Reflect Arrays 发射-反射阵列设计中惠更斯元表面分析
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133607
A. Bertò, F. F. Manzillo, G. Valério
{"title":"Analysis of Huygens’ Metasurfaces for the Design of Transmit-Reflect Arrays","authors":"A. Bertò, F. F. Manzillo, G. Valério","doi":"10.23919/EuCAP57121.2023.10133607","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133607","url":null,"abstract":"In this article, we propose a rigorous approach to determine the surface parameters of Huygens’ metasurface cells for the design of high-efficiency transmit-reflect arrays. We demonstrate that the power of a normally incident plane wave can be evenly split into the transmitted and reflected ones, and that, at the same time, arbitrary phase shifts can be introduced on the scattered waves. As a proof of concept, four cells realizing a uniform 2-bit quantization of the phase range, in transmission and reflection, are designed. Each cell comprises two dielectric slabs and three impedance sheets which are derived from the optimal surface parameters. Moreover, the bandwidth performance are preliminarily assessed.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132064837","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
Passive and Lossless, Closed Metasurfaces for Illusion Electromagnetics 错觉电磁学的无源无损封闭超表面
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133421
J. Budhu, L. Szymanski, A. Grbic
{"title":"Passive and Lossless, Closed Metasurfaces for Illusion Electromagnetics","authors":"J. Budhu, L. Szymanski, A. Grbic","doi":"10.23919/EuCAP57121.2023.10133421","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133421","url":null,"abstract":"A two stage algorithm for the design and optimization of three-dimensionally contoured metasurfaces is presented. The first stage involves integral equation modeling and a moment method solution resulting in a local active/lossy design. The second stage involves optimization. It uses the gradient descent method and a semi-analytic gradient calculation using the adjoint variable method to obtain a non-local passive/lossless metasurface design with identical far field performance to the local active/lossy design. An example of an electromagnetic illusion is presented for a cubical metasurface which scatters the fields of a PEC sphere.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132200182","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 Novel Blind Adaptive Beamformer with Robustness against Mutual Coupling and Miscalibration Effects 一种具有抗互耦和误校正鲁棒性的新型盲自适应波束形成器
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133104
M. Y. Yagan, A. Coşkun, A. E. Pusane
{"title":"A Novel Blind Adaptive Beamformer with Robustness against Mutual Coupling and Miscalibration Effects","authors":"M. Y. Yagan, A. Coşkun, A. E. Pusane","doi":"10.23919/EuCAP57121.2023.10133104","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133104","url":null,"abstract":"Beamforming techniques utilized either at the transmitter or the receiver terminals have achieved superior quality-of-service performances from both the multi-antenna wireless communications systems, communications intelligence and radar target detection perspectives. Despite the overwhelming advantages in ideal operating conditions, beamforming approaches have been shown to face substantial performance degradations due to unknown mutual coupling effects and miscalibrated array elements. As a promising solution, blind beamformers have been proposed as a class of receiver beamformers that do not require a reference signal to operate. In this paper, a novel gradient-based blind beamformer is introduced with the aim of mitigating the deteriorating effects of unknown mutual coupling or miscalibration effects. The proposed approach is shown to find the optimal weights in different antenna array configurations in the presence of several unknown imperfections (e.g., mutual coupling effects, miscalibration effects due to gain and phase variations, inaccurate antenna positions). By providing numerical results related to the proposed algorithm for different array configurations, and bench-marking with the other existing approaches, the proposed scheme has been shown to achieve superior performance in many aspects. Additionally, a measurement-based analysis has been included with validation purposes.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132362423","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
Multihyperuniform Disorder and Its Application on Shared-Aperture Phased Antenna Arrays 多超均匀失序及其在共孔径相控阵中的应用
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133236
O. Christogeorgos, E. Okon, Yang Hao
{"title":"Multihyperuniform Disorder and Its Application on Shared-Aperture Phased Antenna Arrays","authors":"O. Christogeorgos, E. Okon, Yang Hao","doi":"10.23919/EuCAP57121.2023.10133236","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133236","url":null,"abstract":"The main design strategy for shared-aperture antenna arrays usually involves the stacking of patch arrays operating at different frequencies on a multilayer setup. This implies that a sophisticated feeding network needs to be designed for each stacked array and in several cases proper Frequency Selective Surfaces (FSS) need to be employed, which will be invisible for certain design frequencies and will alter the propagation characteristics of the radiated wave for other frequencies. These designs although promising are rather complex, difficult to be generalized and in most cases reach up to tri-band operation. Here, we formulate the mathematical model behind the generation of a multiple element aperiodic distribution, the multihyperuniform disordered, which has been found in several natural processes. We employ this type of disordered distribution in order to overcome the bandwidth limitations of periodic distributions and design shared aperture antenna arrays for ultra-wideband unidirectional emission applications which can be easily generalized to operate at desired operating frequencies.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132542594","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
Novel Ultra-thin Meta-Material Absorber for Potential Use in Compact Anechoic Chamber 用于紧凑型消声室的新型超薄超材料吸收器
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133099
Marco Anacleto, A. Baghel, P. Pinho, N. Carvalho
{"title":"Novel Ultra-thin Meta-Material Absorber for Potential Use in Compact Anechoic Chamber","authors":"Marco Anacleto, A. Baghel, P. Pinho, N. Carvalho","doi":"10.23919/EuCAP57121.2023.10133099","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133099","url":null,"abstract":"In this paper, the authors proposes a novel ultra-thin meta-material absorber (MTA) characterized from 1 to 12 GHz. The MTA is designed and the physics of the same is studied. To show the utility of the MTA as the future material for the conventional chambers, a compact chamber (CC) measuring (L × B × H ): 0.4 × 0.4 × 0.3 m3 is designed. The radiation pattern of the monopole antenna having a resonating frequency at 3 GHz is used to compare the CC performance with the MTA lining. From the 3D-radiation pattern and simulated gain of the antenna, it is observed that the CC with the MTA lining can produce the same results as the free space. This solution open direction to use the MTA as the potential absorbing material for future chambers, which require antenna characterization for the frequency band, i.e., 1-12 GHz.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130203282","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
Study of an Ingestible Antenna Detuning in a Porcine Model Ex Vivo: Methodology and Experimental Demonstration 猪模型体内可消化天线失谐的研究:方法和实验证明
2023 17th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2023-03-26 DOI: 10.23919/EuCAP57121.2023.10133485
Erdem Cil, Í. V. Soares, D. Renaudeau, R. Sauleau, D. Nikolayev
{"title":"Study of an Ingestible Antenna Detuning in a Porcine Model Ex Vivo: Methodology and Experimental Demonstration","authors":"Erdem Cil, Í. V. Soares, D. Renaudeau, R. Sauleau, D. Nikolayev","doi":"10.23919/EuCAP57121.2023.10133485","DOIUrl":"https://doi.org/10.23919/EuCAP57121.2023.10133485","url":null,"abstract":"As an ingestible antenna travels through the gastrointestinal tract, the environment surrounding the antenna continuously changes. Varying electromagnetic properties of gastrointestinal tissues (stomach, small intestine, and large intestine) lead to antenna detuning during this travel. This paper demonstrates the detuning encountered by ingestible antennas in the gastrointestinal tract with an ex vivo study in a porcine model. Four dipole antennas and a patch antenna operating at 434 MHz are used for this demonstration. The magnitude and the phase of the reflection coefficient of the antennas in different gastrointestinal tissues are measured and presented. Moreover, the results of the ex vivo study are compared with measurements conducted in homogeneous liquids mimicking the electromagnetic properties of the gastrointestinal tissues. It is shown that the differences between the magnitude and the phase values obtained in different tissues are greater in the porcine model. The results indicate the importance of performing ex vivo or in vivo characterization of ingestible antennas to validate their robustness against electromagnetic changes in the surrounding environment.","PeriodicalId":103360,"journal":{"name":"2023 17th European Conference on Antennas and Propagation (EuCAP)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130214809","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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