发布求助
文献互助 智能选刊 最新文献

2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)最新文献

筛选
英文 中文
Facile Formation of 1D Flower-like Fe3O4@SiO2@Co3O4Composites for Effective Microwave Absorption 一维花状Fe3O4@SiO2@ co3o4复合材料的快速形成及其有效微波吸收
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887926
Wenting Li, Zhouyu Tong, Kaiyuan Che, Yuying Yang, Yuyin Bi, Rongzhen Wang, M. Ma
{"title":"Facile Formation of 1D Flower-like Fe3O4@SiO2@Co3O4Composites for Effective Microwave Absorption","authors":"Wenting Li, Zhouyu Tong, Kaiyuan Che, Yuying Yang, Yuyin Bi, Rongzhen Wang, M. Ma","doi":"10.1109/iWEM.2019.8887926","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887926","url":null,"abstract":"Here, a simple method to grow Co<inf>3</inf>O<inf>4</inf> nanosheets with the two-dimensional (2D) structure on the One-dimensional (1D) Fe<inf>3</inf>O<inf>4</inf>@SiO<inf>2</inf> (FS) nanochains was successfully prepared. Whilst the microstructure, chemical composition and morphology of the 1D flower-like Fe<inf>3</inf>O<inf>4</inf>@SiO<inf>2</inf>@Co<inf>3</inf>O<inf>4</inf> (FSC) nanochains were investigated in detail. For 1D flower-like FSC nanochains, when the doping amount was about 30%, the minimum reflection loss (RL<inf>min</inf>) values would reach −37.94 dB at 16.13 GHz with the thickness of 1.5 mm, and the effective absorption bandwidth (EAB) was 3.85 GHz (14.15-18 GHz), almost covered the two-thirds of the Ku band. Such excellent microwave absorption (MA) properties can be explained by the higher aspect ratio and the larger specific surface area, which could be used as a hopeful candidate for the new types of microwave absorbing materials.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131072213","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
A Dual-Band Metamaterial with Dual Polarization Characteristics 一种具有双极化特性的双频超材料
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887861
Shengyuan Luo, Yinfeng Xia, Yingsong Li
{"title":"A Dual-Band Metamaterial with Dual Polarization Characteristics","authors":"Shengyuan Luo, Yinfeng Xia, Yingsong Li","doi":"10.1109/iWEM.2019.8887861","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887861","url":null,"abstract":"To meet the multi-function requirement of metamaterial for the next generation wireless communication, In this paper, a novel dual-band metamaterial with dual-polarization property is proposed and analyzed. The designed metamaterial is realized by using four split ring resonators (SRRs) and four transmission lines, which can help the metamaterial to form another resonace. Due to the designed metamaterial having the superiority of symmetric structure, therefore, the proposed metamaterial performs a dual-polorization property.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"3 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127469433","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: 5
Performance Evaluation of DOA Estimation Using Compressed Sensing with Fast Fourier Transform 基于快速傅里叶变换压缩感知的DOA估计性能评价
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887939
Kazuki Miyamoto, N. Kikuma, K. Sakakibara
{"title":"Performance Evaluation of DOA Estimation Using Compressed Sensing with Fast Fourier Transform","authors":"Kazuki Miyamoto, N. Kikuma, K. Sakakibara","doi":"10.1109/iWEM.2019.8887939","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887939","url":null,"abstract":"This paper deals with the method of applying compressed sensing to DOA (Direction-Of-Arrival) estimation. To make use of multiple snapshots of array received data, we introduce FFT (Fast Fourier Transform) into the compressed sensing. Through computer simulation, we evaluate the performance of compressed sensing with FFT and show that the multiple snapshots are effectively utilized for DOA estimation by compressed sensing.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124901090","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
Performance Influence of Inclination Angle of Receiving Array in OAM-MIMO Communication OAM-MIMO通信中接收阵列倾角对性能的影响
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iwem.2019.8887949
Taiga Katsu, N. Kikuma, K. Sakakibara
{"title":"Performance Influence of Inclination Angle of Receiving Array in OAM-MIMO Communication","authors":"Taiga Katsu, N. Kikuma, K. Sakakibara","doi":"10.1109/iwem.2019.8887949","DOIUrl":"https://doi.org/10.1109/iwem.2019.8887949","url":null,"abstract":"One of the MIMO (Multiple-Input Multiple-Output) communication techniques, a method using Orbital Angular Momentum (OAM) has attracted increasing attention. In this paper, we evaluate the performance of OAM-MIMO when the receiving array antenna has some inclination from parallel with the transmitting array antenna.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128741403","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
Angle of Arrival Characteristics at 20 GHz band in LOS Urban Area Street Cell Environment LOS市区街道小区环境下20ghz波段到达角特性
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887950
Koyo Tategami, M. Fujimoto, K. Kitao, T. Imai
{"title":"Angle of Arrival Characteristics at 20 GHz band in LOS Urban Area Street Cell Environment","authors":"Koyo Tategami, M. Fujimoto, K. Kitao, T. Imai","doi":"10.1109/iWEM.2019.8887950","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887950","url":null,"abstract":"In this paper, the SAGE algorithm is applied to measured data acquired by the 20 GHz band channel sounder in a real urban street cell environment, and DOA (Direction of Arrival) is estimated. Then, the average arrival angles and angle spreads are calculated from the estimated results, and angle of arrival characteristics are evaluated. It is shown that the average angle of arrival gradually approaches to direction of transmitter as the distance between the transmitter and the receiver increases. Also, it is shown that the arrival angle spread in the azimuth plane tends to decrease as the distance between transmitter and receiver increases.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127927167","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
Prediction of 5.2 GHz Indoor-to-Outdoor Propagation through Concrete Walls in an Office Building 办公楼通过混凝土墙的5.2 GHz室内外传播预测
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887910
Keita Saito, M. Omiya
{"title":"Prediction of 5.2 GHz Indoor-to-Outdoor Propagation through Concrete Walls in an Office Building","authors":"Keita Saito, M. Omiya","doi":"10.1109/iWEM.2019.8887910","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887910","url":null,"abstract":"This paper discusses a prediction method of 5.2 GHz indoor-to-outdoor propagation characteristics in an office environment by using computer simulations. We configure numerically a single floor of the office building for calculations and install a wireless LAN access point on the corridor ceiling in it. We present distributions of received signal strength (RSSI) observed on the plane outside the concrete wall without windows. It is confirmed that the signal attenuation increases depending upon the number of concrete walls in the indoor propagation path. Then we divide the observation plane into the four regions based on the number of walls inside. It is shown that adding up the RSSI distributions in each region together makes it possible to predict the overall distribution by assuming that they are lognormal.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121119933","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
Time-Varying Channel Interference Reduction by Interference Channel Measurement in MU-MIMO 基于MU-MIMO干扰信道测量的时变信道干扰抑制
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887886
Keiya Uchida, M. Fujimoto, K. Kitao, T. Imai
{"title":"Time-Varying Channel Interference Reduction by Interference Channel Measurement in MU-MIMO","authors":"Keiya Uchida, M. Fujimoto, K. Kitao, T. Imai","doi":"10.1109/iWEM.2019.8887886","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887886","url":null,"abstract":"Communication performance of Multi User MIMO system is degraded when the base station is interfered during channel estimation from other base stations (interference stations). This paper proposes two methods to reduce the interference using the interference channel, which is measured in advance. It is shown that the proposed methods reduce interchannel interference and high channel capacity is achieved even when interference occurs.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126252332","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
Position Insensitive Crack Monitoring by Passive Wireless Sensor 无源无线传感器位置不敏感裂纹监测
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887865
Jun Zhang, Chutian Huang, Yao Li, Bingsheng Zhang, Kun Wang
{"title":"Position Insensitive Crack Monitoring by Passive Wireless Sensor","authors":"Jun Zhang, Chutian Huang, Yao Li, Bingsheng Zhang, Kun Wang","doi":"10.1109/iWEM.2019.8887865","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887865","url":null,"abstract":"The uneven distribution of the field inside a resonator, which is determined by the intrinsic mode, causes a sensitivity variation with respect to the defect location. This challenges the practical application of passive wireless sensors enabled by antennas or dielectric resonators. In this paper, a machine learning method is applied for feature extraction, aiming to suppress the crack position induced sensitivity variation. Compared with the resonant frequency, the selected coefficient of the second principal component shows better robustness.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126945729","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
An Inverted E-Like Antenna Loaded with Lumped Elements for 5MHz-343MHz Applications 5MHz-343MHz应用中装载集总元件的倒类天线
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887946
Yinfeng Xia, Yingsong Li, Jianfeng Jiang, Wei Xue
{"title":"An Inverted E-Like Antenna Loaded with Lumped Elements for 5MHz-343MHz Applications","authors":"Yinfeng Xia, Yingsong Li, Jianfeng Jiang, Wei Xue","doi":"10.1109/iWEM.2019.8887946","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887946","url":null,"abstract":"In this paper, an inverted E-like monopole antenna is proposed, which is loaded with several lumped elements to achieve a super wideband for HF, VHF, UHF and P-band applications. The proposed antenna is fed by coplanar waveguide (CPW) and consists of an inverted E-like radiation patch and CPW ground plane. The entire size of the antenna system is $0.006lambdatimes 0.0058lambda$, where $lambda$ is the free-space wavelength at the lowest resonant frequency. To enhance the performance of the miniaturization antenna, several lumped elements are incorporated into the antenna system. By modeling and optimizing in the HFSS, the simulated result demonstrates that the proposed antenna system can realize 68.6:1 bandwidth from 5 MHz to 343 MHz.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134007457","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
5-GHz Orbital Angular Momentum Array Antenna Design 5 千兆赫轨道角动量阵列天线设计
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887879
Shuang Wang, Q. Zeng, Yong Wu, Yuan Shi
{"title":"5-GHz Orbital Angular Momentum Array Antenna Design","authors":"Shuang Wang, Q. Zeng, Yong Wu, Yuan Shi","doi":"10.1109/iWEM.2019.8887879","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887879","url":null,"abstract":"In this paper, a microstrip array antenna with orbital angular momentum is proposed. Twelve identical printed dipole antennas with microstrip balun feeder are arranged in a dodecahedron cylindrical substrate. By changing the value of the phase difference between successive elements, five kinds of electromagnetic waves of different modes of orbital angular momentum are generated. The simulation results show that the expected results have been achieved with the modalities of OAM 0, 1, 2, 3, 4. Consequently, the proposed orbital angular momentum antenna has a promising prospect.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129323358","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
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：604180095
Book学术官方微信
小红书