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Short-term Forecast of Radiocommunication Geostationary Satellite Links coupling Weather Prediction and Radiopropagation Models 天气预报与无线电传播模式耦合的无线电通信地球同步卫星链路短期预报
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769013
M. Biscarini, L. Luini, C. Riva, P. Antonelli, S. Di Fabio, L. Bernardini, P. Scaccia, T. Cherubini, R. Nebuloni, L. Dossi, D. Cimini, T. Rossi, M. De Sanctis, A. Martellucci, F. Marzano
{"title":"Short-term Forecast of Radiocommunication Geostationary Satellite Links coupling Weather Prediction and Radiopropagation Models","authors":"M. Biscarini, L. Luini, C. Riva, P. Antonelli, S. Di Fabio, L. Bernardini, P. Scaccia, T. Cherubini, R. Nebuloni, L. Dossi, D. Cimini, T. Rossi, M. De Sanctis, A. Martellucci, F. Marzano","doi":"10.23919/eucap53622.2022.9769013","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769013","url":null,"abstract":"The objectives and the preliminary results of the RadioSatMet numerical simulator are here described. The simulation chain is aimed at assessing the radio-propagation channel over the coverage region of a geostationary satellite communication (SatCom) system, featuring adaptive techniques as smart gateway diversity, through link quality estimates provided by its ground terminals as well as numerical weather prediction data. The RadioSatMet channel assessment system generates short-term statistical nowcasts and forecasts of the propagation conditions in each point of the coverage area. The RadioSatMet channel assessment output feeds an end-to-end system simulator, which evaluates the performances of the SatCom system with a particular focus on its gateway stations, in terms of data throughput, number of gateway switches and availability gains that can be achieved by using these methods.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129252879","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
Angle of Arrival Estimation System for LoRa Technology based on Phase Detectors 基于鉴相器的LoRa技术到达角估计系统
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769059
Noori Bnilam, Samer Nasser, M. Weyn
{"title":"Angle of Arrival Estimation System for LoRa Technology based on Phase Detectors","authors":"Noori Bnilam, Samer Nasser, M. Weyn","doi":"10.23919/eucap53622.2022.9769059","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769059","url":null,"abstract":"In this paper, we propose a comprehensive low-power and low-cost Angle of Arrival (AoA) estimation sys-tem. The proposed system consists of a hardware architecture and an AoA estimation algorithm. The proposed hardware captures the phase values of the received signal and transmits them to the nearest LoRaWAN gateway. In the cloud, an AoA estimation algorithm will be performed, and the AoA of the received signal will be estimated. The proposed hardware is generic, and it can estimate the AoA of any received signal that is operating at a frequency below 2.7 GHz. However, we have validated its performance with LoRa signals that are operating at the 868 MHz frequency band. The experimental validation, which has been conducted in a controlled environment, reveals that the proposed system can estimate the AoA of the received signals from various azimuth angles with median and maximum estimation errors of 4 and 14 degrees, respectively.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130294573","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
Metantennas: Opportunities and Challenges in Future Microwave Metasurface Antenna Research and Applications 超表面天线:未来微波超表面天线研究与应用的机遇与挑战
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9768992
Zhi Ning Chen, Q. Lou, Wei E. I. Liu
{"title":"Metantennas: Opportunities and Challenges in Future Microwave Metasurface Antenna Research and Applications","authors":"Zhi Ning Chen, Q. Lou, Wei E. I. Liu","doi":"10.23919/eucap53622.2022.9768992","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9768992","url":null,"abstract":"Metantennas have treasured enormous opportunities in antenna designs but along with arduous challenges. The views and overviews of critical issues, such as ohmic losses, of metamaterials and metasurfaces-based antenna designs at microwave bands are shared. The opportunities and challenges in future metantenna research and applications are predicted and proposed hopefully to pave future ways to enhance performance and introduce more functions of microwave antennas.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123403173","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
Low-cost Setup for Electromagnetic SAR Evaluation in a Human Phantom 人体幻影中电磁SAR评估的低成本设置
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769318
S.I. Rodríguez, A. Gallego, E. Pineda, J.C. Vargas, M. Pérez, F. Roman, J. Araque
{"title":"Low-cost Setup for Electromagnetic SAR Evaluation in a Human Phantom","authors":"S.I. Rodríguez, A. Gallego, E. Pineda, J.C. Vargas, M. Pérez, F. Roman, J. Araque","doi":"10.23919/eucap53622.2022.9769318","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769318","url":null,"abstract":"We describe a low-cost setup developed to carry out SAR measurements on a human phantom. The development comprises: a human phantom manufactured using a modified workflow from the mannequin industry, liquid preparations using recipes found in the literature, a system for the transmission and reception of RF signals, a system for tracking the position of a field probe during the scanning, which is carried out manually, and a system for the integration and post-processing of the measured data. Preliminary validation results demonstrate good performance for all the blocks described. Detailed results from an underway measurement campaign with these blocks will be presented during the conference.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"51 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121204514","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
Channel Characteristics Analysis of Ultra-high Mobility MIMO Wireless System in Tunnel Scenario 隧道场景下超高移动性MIMO无线系统信道特性分析
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769363
Sirou Wang, Hengkai Zhao, G. Zheng
{"title":"Channel Characteristics Analysis of Ultra-high Mobility MIMO Wireless System in Tunnel Scenario","authors":"Sirou Wang, Hengkai Zhao, G. Zheng","doi":"10.23919/eucap53622.2022.9769363","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769363","url":null,"abstract":"The maximum speed of a train in a tunnel is closely related to the size of the tunnel. Facing the demand of increasing train speed, it is particularly important to choose a reasonable tunnel radius, because the size of tunnel has a great influence on the channel characteristics of wireless communication. This paper studies the effect of various arch tunnel radius on the performance of multiple-input multiple-output (MIMO) wireless system in 3.5GHz and 28GHz tunnel scenarios. The channel of train communication under ultra-high speed is simulated based on ray-tracing (RT) approach. By analyzing the Root Mean Square delay spread (RMS DS) and Doppler spread of signals under different arch radius in straight tunnel, it is found that the delay spread and Doppler spread increase with the tunnel radius increment. In addition, we analyze the eigenvalue distribution of the channel in the ultra-high speed mobile scenario. The results show that with the increase of tunnel radius, the eigenvalue distribution of channel matrix becomes more uneven and the tunnel state becomes worse. These findings will have prolific values for the applications of MIMO channel based mobile communications in underground tunnels, and railways.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121332106","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
A Simple Imaging Strategy for In-Line food Inspection via Microwave Imaging 一种简单的微波食品在线检测成像策略
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9768949
G. Bellizzi, L. Crocco, M. Cavagnaro, M. Ricci, J. T. Vásquez, F. Vipiana
{"title":"A Simple Imaging Strategy for In-Line food Inspection via Microwave Imaging","authors":"G. Bellizzi, L. Crocco, M. Cavagnaro, M. Ricci, J. T. Vásquez, F. Vipiana","doi":"10.23919/eucap53622.2022.9768949","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9768949","url":null,"abstract":"Microwave imaging can represent an alternative for in-line inspection of food products, to reveal the presence of possible foreign bodies that may have contaminated the product during the transformation and/or packaging stages. To this end, a microwave system specifically meant for such purpose has been recently proposed. With respect to this device, a novel imaging strategy is presented, which allows one to build the image of the target without the need of a contaminant-free item used as reference sample. The idea is still to perform a differential imaging taking advantage of possible symmetries of the object under test with respect to the imaging system. These symmetries only occurred in a contaminant-free item, while are broken by the presence of an inclusion, thus revealing their presence. A quite common case is that of food packaged in circular plastic/glass jars. A simple numerical example is provided showing the capabilities of the approach.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114097513","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
Measurement-based Analysis of Atmospheric Attenuation by Considering Different Weather Types for Visible Light Communications 考虑不同天气类型的可见光通信大气衰减测量分析
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769424
Baobao Liu, Pan Tang, Yue Yin, Jian-hua Zhang, Liang Xia
{"title":"Measurement-based Analysis of Atmospheric Attenuation by Considering Different Weather Types for Visible Light Communications","authors":"Baobao Liu, Pan Tang, Yue Yin, Jian-hua Zhang, Liang Xia","doi":"10.23919/eucap53622.2022.9769424","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769424","url":null,"abstract":"Facing the current shortage of radio frequency spectrum resources, visible light communications (VLC) technology has been proposed to be a candidate technology in the sixth generation (6G), especially in the application of Intelligent Transportation Systems (ITS). And the propagation characteristics of VLC channel are critical for VLC system design and optimization. Furthermore, the impact of weather conditions on VLC channel cannot be ignored considering the vehicular VLC in ITS. In this paper, we experimentally investigate the impact of different weather types including fog and relative humidity (RH) on VLC in a laboratory atmospheric chamber. To simulate adverse weather conditions, we change the levels of fog density and water vapor introduced into the chamber, respectively. Then we measure the power attenuation and the bit error rate (BER) performance of VLC system under fog and RH conditions. We find that the VLC system will exhibit worse BER performance in the fog impaired channel than RH conditions. Besides, the results show that the bit errors will not happen until the attenuation reaches the threshold, i.e. attenuated by about 60% for both fog and RH conditions in our experiments. After that, the BER will deteriorate badly even up to 20%.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114220485","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
Experimental Evaluation of Thin Bone Fracture Detection Using Microwave Imaging 微波成像检测薄骨骨折的实验评价
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769388
Kesia C. Santos, C. Fernandes, Jorge R. Costa
{"title":"Experimental Evaluation of Thin Bone Fracture Detection Using Microwave Imaging","authors":"Kesia C. Santos, C. Fernandes, Jorge R. Costa","doi":"10.23919/eucap53622.2022.9769388","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769388","url":null,"abstract":"Microwave imaging is a promising candidate modality for the detection of fractures in superficial bones. We propose a simple dedicated experimental setup and use it to evaluate experimentally the feasibility of detection and location of thin transversal fractures in an animal bone. A single small Vivaldi antenna scans the bone along its length in two longitudinal planes, and collects the monostatic scattered fields in the 8.3-11.1 GHz frequency range. The image is reconstructed using a wave migration algorithm. Tests were carried on an ex-vivo animal leg bone with an induced transversal fracture. The results showed that transversal bone fractures can be detected down to 0.35 mm thickness. The system is attractive for a practical application because it is contactless, operated in air, non-ionizing, simple and comfortable for the patient. It can be used e.g. by first responders in the field, or in low-income settings.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114228412","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
3D Printed Discrete Dielectric Lens With Improved Matching Layers 具有改进匹配层的3D打印离散介质透镜
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769687
J. A. Vásquez-Peralvo, J. Fernández-González, T. Wong
{"title":"3D Printed Discrete Dielectric Lens With Improved Matching Layers","authors":"J. A. Vásquez-Peralvo, J. Fernández-González, T. Wong","doi":"10.23919/eucap53622.2022.9769687","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769687","url":null,"abstract":"This paper presents a non-zoned discrete dielectric lens comprising two or three matching layers to reduce the 50–110 GHz frequency range reflections. Based on Chebyshev and binomial multi-section transformers, the designed models use matching layers at the top and bottom. In addition, the presented designs use pins instead of the conventional slots for the matching layers, thus easing the manufacturing process. The results show that the broadband realized gain obtained using the proposed design is higher for both the two- and three-layer design than the commonly used quarter-wave transformer. A Binomial lens with two matchings layers using 38 unit cells is fabricated and illuminated by an open-ended waveguide to validate the simulation results obtained using CST Microwave Studio. The fabrication process uses stereolithography additive manufacturing.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114618450","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
Flat- Top Gaussian Arrays with Dynamic Range Ratio Control 具有动态范围比控制的平顶高斯阵列
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769606
Goran Molnar, Dorian Ljubenko, Mile Šakić
{"title":"Flat- Top Gaussian Arrays with Dynamic Range Ratio Control","authors":"Goran Molnar, Dorian Ljubenko, Mile Šakić","doi":"10.23919/eucap53622.2022.9769606","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769606","url":null,"abstract":"The design of antenna arrays forming flat-top beampatterns prefers robust and computationally efficient methods. These features are usually met by analytical techniques or simple optimization procedures. On the other hand, in the flat-top array design, a common requirement is the ability to control the beampattern width and sidelobe level. However, it usually brings the excitation coefficients with high or unpredictable dynamic range ratio. In this paper, the authors propose a straightforward method for the design of symmetrical flat-top arrays with controllable dynamic range ratio. The method is based on the quadratic transform of a Gaussian excitation to the array having maximally flat main beam. In addition, the method deals with zero coefficients, whose positions are used to control the dynamic range ratio. As a special case, flat-top Gaussian arrays with minimum dynamic range ratio are obtained.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116215894","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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