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Characterisation of Frequency Selective Reflections off Indoor Surfaces for 92–110 GHz 92-110 GHz室内表面频率选择反射特性
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769552
D. Serghiou, M. Khalily, Ali Ali, T. Brown, R. Tafazolli
{"title":"Characterisation of Frequency Selective Reflections off Indoor Surfaces for 92–110 GHz","authors":"D. Serghiou, M. Khalily, Ali Ali, T. Brown, R. Tafazolli","doi":"10.23919/eucap53622.2022.9769552","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769552","url":null,"abstract":"In this paper, we investigate the reflection properties of different interior surfaces in the 92–110 GHz sub-Terahertz (THz) band. The measurements were conducted in an indoor environment by placing the surface in a specular configuration between the Transmitter (Tx) and Receiver (Rx) and collecting a large set of data by offsetting the Tx and Rx in parallel to the surface. The measurements were performed using an Agilent N5230A Vector-Network-Analyzer (VNA). In particular, we present a statistical analysis in the frequency domain to show how frequency selective each surface reflection is and how constant this behaviour is across the whole data set. We introduce the Power-Delay-Profile (PDP) to characterize the multipath behaviour of the channel and calculate the Root-Mean-Square (RMS) delay spread. The measurement results provide a good insight for future propagation work to be done for the development of indoor communications systems at sub-THz frequencies.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"14 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":"122279385","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
Amplifier-Antenna Array Optimization for EIRP by Phase Tuning 基于相位调谐的EIRP放大器-天线阵列优化
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9768981
Veli-Pekka Kutinlahti, A. Lehtovuori, V. Viikari
{"title":"Amplifier-Antenna Array Optimization for EIRP by Phase Tuning","authors":"Veli-Pekka Kutinlahti, A. Lehtovuori, V. Viikari","doi":"10.23919/eucap53622.2022.9768981","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9768981","url":null,"abstract":"In this paper, we analyse an antenna array fed with element-specific phase shifters and amplifiers. The elements of the array are mutually coupled and the operation of the amplifiers depend on the load impedance presented by the array. We derive a method for maximizing EIRP in a given direction and demonstrate the concept by simulations with 2x2 array fed with element-specific phase shifters and amplifiers at 2.5 GHz. Compared to the reference case, the optimization provides up to 0.7 dB improvement in EIRP in the −3 dB beam steering range.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"27 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":"127924284","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
SAFEDRONE project: development of a UAV -based high-resolution GPR system for IED detection SAFEDRONE项目:用于IED探测的基于无人机的高分辨率GPR系统的发展
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9768934
M. García-Fernández, G. Álvarez-Narciandi, Yuri Álvarez López, F. Andrés
{"title":"SAFEDRONE project: development of a UAV -based high-resolution GPR system for IED detection","authors":"M. García-Fernández, G. Álvarez-Narciandi, Yuri Álvarez López, F. Andrés","doi":"10.23919/eucap53622.2022.9768934","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9768934","url":null,"abstract":"This contribution presents the main objectives and achievements of the SAFEDRONE project, devoted to the development of airborne-based high-resolution Ground Penetrating Radar (GPR) systems for the detection of buried landmines and Improvised Explosive Devices (IEDs). The overall goal of the project is to take advantage of the ability of Unmanned Aerial Vehicles (UAVs) to enable a contactless, safe, and fast scanning of the area of interest, together with the capability of Synthetic Aperture Radar (SAR) systems to provide high-resolution radar images. Down-Looking and hybrid Forward-Looking/Down-Looking architectures have been tested throughout the project in order to determine which of them provides the best detection results (depending on the scenario, and geometry, composition, and depth of the buried targets). To achieve the required accuracy to enable GPR-SAR processing, precise positioning and geo-referring subsystems have been integrated within the UAV. Results of the validation tests conducted in realistic scenarios are presented.","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":"127989591","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
Optimal Design Method of RF-DC Conversion Circuits for Various Input and Load Conditions Required for Rectenna Site Design 整流天线场地设计中各种输入和负载条件下RF-DC转换电路的优化设计方法
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769476
K. Fujimori, Kensuke Kobayashi
{"title":"Optimal Design Method of RF-DC Conversion Circuits for Various Input and Load Conditions Required for Rectenna Site Design","authors":"K. Fujimori, Kensuke Kobayashi","doi":"10.23919/eucap53622.2022.9769476","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769476","url":null,"abstract":"The RF-DC conversion circuit measurement system that can determine the optimum microwave circuit with the input power and load resistance fixed was constructed. By measuring the diode operating impedance and microwave circuit impedance with the constructed system, it was found that both impedances are not complex conjugate. From the result and constructed measurement system, we showed the RF-DC conversion circuit design method for various input power and load resistance conditions.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"79 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":"121607533","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
Metasurface antenna system for pedestrian to vehicle communications based on IEEE 802.11p: design and evaluation 基于IEEE 802.11p的人车通信超表面天线系统设计与评价
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769184
Narimane Awada Mislmani, D. Seetharamdoo
{"title":"Metasurface antenna system for pedestrian to vehicle communications based on IEEE 802.11p: design and evaluation","authors":"Narimane Awada Mislmani, D. Seetharamdoo","doi":"10.23919/eucap53622.2022.9769184","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769184","url":null,"abstract":"Vehicular communication systems can be used for enhancing the safety level of road users by exchanging safety/warning messages. In this paper, we propose an antenna for a pedestrian-to-vehicular (P2V) device which provides safety service to road workers on the highway or road environment. A metasurface antenna system was fabricated and tested in the anechoic chamber. The device is worn close to the body of the road worker and at a distance of less than 200 mm. In this frame-work, the SAR has to be evaluated and compared to the threshold values recommended by standards. Experimental results showed that the proposed antenna, backed by a metasurface reflector, is an excellent candidate for P2V communications based on IEEE 802.11p systems with desirable radiation pattern, polarisation, and safety limits. Finally, a comparison between our antenna system performance in terms of full coverage direction and other systems is done.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"62 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":"115944106","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
Developing a MIMO Test Methodology using Dynamic Channel Models and Link Adaptation 利用动态信道模型和链路自适应开发MIMO测试方法
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769451
M. Foegelle, T. Hertel, P. Kyösti, Jukka Kyröläinen, D. Reed
{"title":"Developing a MIMO Test Methodology using Dynamic Channel Models and Link Adaptation","authors":"M. Foegelle, T. Hertel, P. Kyösti, Jukka Kyröläinen, D. Reed","doi":"10.23919/eucap53622.2022.9769451","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769451","url":null,"abstract":"Industry standards for over-the-air testing of LTE MIMO devices have used multi-probe anechoic chamber based systems, also known as the boundary array method, to evaluate device performance in a spatially static environment. The spatial distribution of clusters in the chosen channel models, such as the SCME Urban Micro and Urban Macro channel models, are fixed, and the only geometric variation relative to the device under test is accomplished by physically rotating the device in the generated test environment. For 5G FR1 testing, 3GPP has adopted a similar approach. However, in an effort to meet the desire of the North American cellular network operators to better understand the behavior of a device on a realistic network, the CTIA MIMO OTA working group is developing a test plan based on the use of dynamic channel models that vary the spatial configuration as a function of time, and allowing the communication tester base station emulator to perform link adaptation, allowing the device to choose the best MIMO or SISO diversity mode and data rate for a given channel condition. This paper will discuss the design considerations associated with developing this new channel model and the related test system requirements.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"46 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":"115859034","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
Comparison of Measurements and Simulations of Tapered Anechoic Chambers 锥形消声室的测量与仿真比较
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769196
V. Rodriguez, Elis Rios
{"title":"Comparison of Measurements and Simulations of Tapered Anechoic Chambers","authors":"V. Rodriguez, Elis Rios","doi":"10.23919/eucap53622.2022.9769196","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769196","url":null,"abstract":"Recently the author presented two papers on the use of full wave numerical methods for the prediction of anechoic chamber performance. In the first paper [1] the author argued that full wave analysis while accurate is still dependent on the accuracy of the input parameters, one of which may be the material properties of the RF absorber. On the second paper [2] presented the author stated that full wave analysis should be reserved to evaluating the potential effects of defective absorber of location of lights in different areas of the range. In this paper the author compares the full wave analysis of a taper anechoic range with the measured performance of the implementation of said tapered range.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"150 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":"115895477","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
Information Processing at the Deep Physical Layer level 深层物理层的信息处理
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769396
M. Migliore
{"title":"Information Processing at the Deep Physical Layer level","authors":"M. Migliore","doi":"10.23919/eucap53622.2022.9769396","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769396","url":null,"abstract":"Recently it has been proposed the introduction of an additional layer placed below the Physical Layer of the OSI model, called the “Deep Physical Layer” (DPL), to analyze the communication process at the electromagnetic field level. While the transmission process at the Physical Layer level is focused on bits, information at the DPL level is modeled in terms of distinguishable configurations of the electromagnetic field. In this approach, the numerous solutions proposed for 6G, which include intelligent modifications of the propagation environment, can be seen as “data processing” at the DPL level able to preserve information lost in previous generations of cellular systems.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"1 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":"129994424","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
183GHz Cavity-Backed Spiral Radiometer Antenna with Dual Circular Polarization for Earth Observation Applications
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769535
Juan M. Herrera-Martín, V. González-Posadas, D. Segovia-Vargas
{"title":"183GHz Cavity-Backed Spiral Radiometer Antenna with Dual Circular Polarization for Earth Observation Applications","authors":"Juan M. Herrera-Martín, V. González-Posadas, D. Segovia-Vargas","doi":"10.23919/eucap53622.2022.9769535","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769535","url":null,"abstract":"New radiometer technology is a key enabling factor for the upcoming new generation of space missions; earth observation applications, with the use of cubesats and nanosatellites, will benefit greatly from the insight into our own planet these sensors can offer. In this paper, a four-armed cavity-backed radiometer spiral antenna is designed and simulated to capture the $183text{GHz}pm 5text{GHz}$ water absorption line, fundamental for measuring moisture levels in the atmosphere and evaluating the effects of climate change in our planet. Due to the manufacturing difficulties involved, a scaled design centered in 7GHz is also provided. This scaled design is manufactured and measured as a way to validate the EHF design.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"116 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":"129996377","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
Capacity Analysis and Improvement for OAM-MIMO in Typical Multipath Scenarios 典型多径场景下OAM-MIMO的容量分析与改进
2022 16th European Conference on Antennas and Propagation (EuCAP) Pub Date : 2022-03-27 DOI: 10.23919/eucap53622.2022.9769593
Kuo Zhao, Tao Hu, Yang Wang, X. Liao
{"title":"Capacity Analysis and Improvement for OAM-MIMO in Typical Multipath Scenarios","authors":"Kuo Zhao, Tao Hu, Yang Wang, X. Liao","doi":"10.23919/eucap53622.2022.9769593","DOIUrl":"https://doi.org/10.23919/eucap53622.2022.9769593","url":null,"abstract":"Orbital angular momentum (OAM) can provide an additional multiplexing degree in wireless communications. However, it suffers large propagation loss in the misalignment and rich-multipath scenarios. In this paper, the joint iterative power allocation and average phase compensation (IPA-APC) scheme is proposed to improve the performance of OAM-MIMO in street scenarios. On the one hand, the average phase compensation scheme improves the channel capacity as well as the phase deviations caused by misalignment and multipath; on the other hand, compared with the optimal power allocation (OPA) scheme, the proposed iterative power allocation scheme reduces the running time of the algorithm and ensures the capacity performance. Simulation results verify the superiority of the proposed scheme.","PeriodicalId":228461,"journal":{"name":"2022 16th European Conference on Antennas and Propagation (EuCAP)","volume":"1 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":"130079733","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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