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2020 International Symposium on Antennas and Propagation (ISAP)最新文献

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PSO-aided ILA Methodology for Hemispherical Beam Coverage and Scan Loss Mitigation 半球面波束覆盖和扫描损耗减缓的pso辅助ILA方法
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391376
Youngno Youn, Jaehong Choi, Daehyeon Kim, A. Omar, Jaehyun Choi, I. Yoon, S. Ko, Jungyub Lee, Youngju Lee, W. Hong
{"title":"PSO-aided ILA Methodology for Hemispherical Beam Coverage and Scan Loss Mitigation","authors":"Youngno Youn, Jaehong Choi, Daehyeon Kim, A. Omar, Jaehyun Choi, I. Yoon, S. Ko, Jungyub Lee, Youngju Lee, W. Hong","doi":"10.23919/ISAP47053.2021.9391376","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391376","url":null,"abstract":"This paper proposes an accurate and efficient integrated lens antenna (ILA) concept and design methodology for extraordinary beam coverage and scan loss mitigation at millimeter-wave spectrum. The geometry of the proposed ILA consists of inhomogeneous curvatures and internal center offset, where multiple parameters have high order and non-linear relations. Relying entirely on conventional full-wave simulation becomes realistically unviable. Based on geometrical optics, twodimensional ray tracing model calculates refractions on the arbitrarily-curved boundaries. The preliminary geometry of the proposed ILA is determined by a novel particle swarm optimization (PSO) algorithm, significantly enhancing the entire efficiency of the design procedure. With the integration of 8×16 phased array antenna, the devised ILA exceeds the conventional beam scanning limitations by 93%, achieving a main beam scanning range of 174 and scan loss of 2.2 dB for both vertical and horizontal polarizations and broad operational bandwidth. This method is estimated to alleviate the mmWave 5G antenna CAPEX (capital expenditure) by more than 50%.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115369845","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
Radio environment measurement over the urban area for UAV communications 用于无人机通信的城市上空无线电环境测量
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391305
Mio Taniguchi, Erina Sasaki, M. Ueba, S. Kitazawa
{"title":"Radio environment measurement over the urban area for UAV communications","authors":"Mio Taniguchi, Erina Sasaki, M. Ueba, S. Kitazawa","doi":"10.23919/ISAP47053.2021.9391305","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391305","url":null,"abstract":"This paper describes the UAV airspace's radio environment's evaluation results in the 920MHz and 2.4GHz band at the urban and the bay area. The radio environment measurement has been set up at a multistory building in Tokyo's metropolitan area (Shinjuku) and a giant Ferris Wheel in the bay area. The measurement results show that the urban area radio environment was distinct from the bay area. Especially, the CDF of 2.4 GHz band shows time-dependent at Shinjuku Building. This result found that Wireless LAN use is a significant factor in the 2.4 GHz band.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116710568","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
Iteration-Free Phase Retrieval Method Using Phaseless Single-Plane Near-Field 基于无相单平面近场的无迭代相位反演方法
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391265
Yoshiki Sugimoto, K. Sakakibara, N. Kikuma
{"title":"Iteration-Free Phase Retrieval Method Using Phaseless Single-Plane Near-Field","authors":"Yoshiki Sugimoto, K. Sakakibara, N. Kikuma","doi":"10.23919/ISAP47053.2021.9391265","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391265","url":null,"abstract":"This paper proposes an iteration-free phase retrieval method using single-plane near-field amplitude distribution. The proposed method numerically creates a two amplitude groups from a single plane amplitude distribution by linear interpolation. The two amplitude groups are related to virtually defined aperture surface using propagation matrices by the field equivalence principle. The phase distribution on the measurement plane is retrieved using the singular vector of the propagation matrix scaled by the two amplitude groups. By the numerical analysis, we indicate that the near-field phase distribution can be accurately reconstructed by the proposed method with the reconstruction error within 10%.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116791282","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
Interdigital and Multi-Via Structures for Mushroom-Type Metasurface Reflectors 蘑菇型超表面反射器的数字间和多通孔结构
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391310
Taisei Urakami, T. Maruyama, T. Shiozawa
{"title":"Interdigital and Multi-Via Structures for Mushroom-Type Metasurface Reflectors","authors":"Taisei Urakami, T. Maruyama, T. Shiozawa","doi":"10.23919/ISAP47053.2021.9391310","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391310","url":null,"abstract":"In this paper, the novel patch element shapes with the interdigital and multi-via structures of a mushroom-type metasurface reflector are proposed. The interdigital structure provides a wide reflection phase range by changing the depth of the interdigital fingers. In addition, the multi-via structure provides the reflection phases near +180°. These structures have low polarization dependent properties. The desired reflection angles and sharp far field patterns of the reflected beams were obtained in the simulation results.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"266 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120866165","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
EBG Inspired Pattern and Polarization Reconfigurable Antenna EBG激励方向图和极化可重构天线
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391278
M. Rahim, M. Ismail, M. Hamid, H. Majid
{"title":"EBG Inspired Pattern and Polarization Reconfigurable Antenna","authors":"M. Rahim, M. Ismail, M. Hamid, H. Majid","doi":"10.23919/ISAP47053.2021.9391278","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391278","url":null,"abstract":"This paper presents the use of electromagnetic bandgap (EBG) structure in the pattern and polarization reconfigurable antenna for beam-steering configurations. The proposed antenna consists a group of EBG structure to control the pattern reconfigurability. While two triangular slits are introduces on the square patches to give polarization reconfigurability. The PIN diode is used as the switching method. A maximum +15° and -15° of beam steering is achieved at both linear and circular polarization.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"47 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120984429","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
Miniaturized Semicircular Disc Patch Antenna Designed with Sector-Shaped Metamaterials 扇形超材料设计的小型化半圆形圆盘贴片天线
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391338
Guoxian Dai, Xiaofei Xu, Xiao Deng
{"title":"Miniaturized Semicircular Disc Patch Antenna Designed with Sector-Shaped Metamaterials","authors":"Guoxian Dai, Xiaofei Xu, Xiao Deng","doi":"10.23919/ISAP47053.2021.9391338","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391338","url":null,"abstract":"A miniaturized semicircular disc patch antenna is designed which is loaded with sector-shaped mushroom metamaterials. Full wave simulations reveal that a semicircular disc patch with size of 0.234λ0 ×0.117λ0 enables the antenna to resonate at 3.511GHz. The antenna bandwidth is 2.3% and the peak gain is about 5.6dBi. The proposed miniaturized semicircular disc patch antenna can meet the needs of 5G mobile communications at 3.5GHz band.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127124677","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
HAPS propagation loss model for urban and suburban environments 城市和郊区环境的HAPS传播损耗模型
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391285
H. Omote, S. Kimura, Hoyu Lin, Akihiro Sato
{"title":"HAPS propagation loss model for urban and suburban environments","authors":"H. Omote, S. Kimura, Hoyu Lin, Akihiro Sato","doi":"10.23919/ISAP47053.2021.9391285","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391285","url":null,"abstract":"High-Altitude Platform Station (HAPS), which provides communication services from an altitude of 20 km via an Unmanned Aerial Vehicle (UAV), is attracting much attention as a new mobile communications platform for ultra-wide coverage areas and disaster-resilient networks. A HAPS can provide mobile communications services directly to smartphones. In order to design efficient cell configurations for HAPS-based services, we need a radio wave propagation model that takes into consideration factors such as terrain, vegetation, urban areas, suburban areas, and building entry loss. In this paper, we focus on the propagation loss at high elevation angles in urban and suburban areas. We measure and clarify the propagation loss characteristics at high elevation angles in urban and suburban areas and propose a new model based on the current clutter loss model.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124794306","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
A Miniaturized Large-Scale MIMO Antenna Using the Double-Ring Structure 采用双环结构的小型化大规模MIMO天线
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391375
Hiroya Tanaka, K. Ogawa, K. Honda
{"title":"A Miniaturized Large-Scale MIMO Antenna Using the Double-Ring Structure","authors":"Hiroya Tanaka, K. Ogawa, K. Honda","doi":"10.23919/ISAP47053.2021.9391375","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391375","url":null,"abstract":"This paper presents a miniaturized large-scale MIMO antenna for mobile stations. The use of double-ring structure comprising the inner and outer 64 × 64 MIMO arrays provides a compact 128 × 128 MIMO array due to an efficient array arrangement under the two-dimensional spatial constraint condition. A simple EM model comprising three elements is proposed, and a theoretical investigation is performed to determine the optimum radius of the inner array.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124874939","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
EMI Reduction Techniques from 100 kW Wireless Charging Systems for Heavy-Duty Vehicles 重型车辆100千瓦无线充电系统的电磁干扰降低技术
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391312
H. Uno, K. Ogawa, T. Shijo, Yasuhiro Kanekiyo, K. Ogura, S. Obayashi, M. Ishida
{"title":"EMI Reduction Techniques from 100 kW Wireless Charging Systems for Heavy-Duty Vehicles","authors":"H. Uno, K. Ogawa, T. Shijo, Yasuhiro Kanekiyo, K. Ogura, S. Obayashi, M. Ishida","doi":"10.23919/ISAP47053.2021.9391312","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391312","url":null,"abstract":"Wireless power transfer (WPT) is a useful technology for vehicle charging. Transfer power above 100 kW is needed for rapid charging of heavy-duty vehicles such as electric buses. One of the issues of WPT systems is electromagnetic interference that affects radio services. Limits of radiated disturbances from WPT systems are specified in CISPR 11 and the Radio Act of Japan. In this study, a 100-kW-class WPT system was constructed with the aim of reducing the radiated magnetic field strength. Opposite-phase transfer and frequency hopping spread spectrum were implemented to reduce the fundamental frequency. Low-pass filters were applied to decrease the harmonic frequency. A 10-m anechoic chamber was used to measure the radiated magnetic field strength of this WPT system. The results confirmed the compatibility of the three proposed techniques. The radiated magnetic field strength of the constructed WPT system was below the limit set by the Radio Act of Japan.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125158386","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
A Gridless Method for Microwave Coincidence Imaging Based on Atomic Norm Minimization 基于原子范数最小化的微波符合成像无网格方法
2020 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2021-01-25 DOI: 10.23919/ISAP47053.2021.9391320
Kaicheng Cao, Yongqiang Cheng, Kang Liu, Hongyan Liu, Hongqiang Wang
{"title":"A Gridless Method for Microwave Coincidence Imaging Based on Atomic Norm Minimization","authors":"Kaicheng Cao, Yongqiang Cheng, Kang Liu, Hongyan Liu, Hongqiang Wang","doi":"10.23919/ISAP47053.2021.9391320","DOIUrl":"https://doi.org/10.23919/ISAP47053.2021.9391320","url":null,"abstract":"Microwave coincidence imaging (MCI) has great potential in the staring and forward-looking imaging realms. However, the existing grid-based imaging methods usually suffer from grid mismatch problem which would significantly degrade the imaging performance. In this paper, a gridless MCI imaging method based on the atomic norm minimization (ANM) is proposed to offer a resolution to the grid mismatch problem, while maintaining the super-resolution ability of MCI.","PeriodicalId":165901,"journal":{"name":"2020 International Symposium on Antennas and Propagation (ISAP)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125271810","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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