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
Array-based underwater acoustic signal recognition 基于阵列的水声信号识别
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887921
Lin Chang, Tingting Lyu
{"title":"Array-based underwater acoustic signal recognition","authors":"Lin Chang, Tingting Lyu","doi":"10.1109/iWEM.2019.8887921","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887921","url":null,"abstract":"Underwater environment is more complex than the air and underwater acoustic signals are often hidden in the noise. Therefor, the interest signal needs to be enhanced or selected before identifying. In this paper, the signal is first enhanced by the method of beamforming, and then the acoustic signal feature is extracted and sent to softmax for recognition. The effectiveness of the method is verified by experiments.","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":"129402346","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 3D Printed Dual Circularly Polarized Antenna for Millimeter-Wave Applications 用于毫米波应用的3D打印双圆极化天线
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887889
Y. Tu, Botao Feng
{"title":"A 3D Printed Dual Circularly Polarized Antenna for Millimeter-Wave Applications","authors":"Y. Tu, Botao Feng","doi":"10.1109/iWEM.2019.8887889","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887889","url":null,"abstract":"A dual circularly polarized antenna array using 3D printed technique is proposed for millimeter wave (mm-wave) applications. In this design, the two polarizations share the common radiating element and 90° orthogonal wave-guide feeding network. As a result, their performance in the aspect of impedance bandwidth, axial ratio (AR) bandwidth, and gain is nearly identical to each other, which could meet the demand of future 5G mm-wave applications.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"14 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":"124947420","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
Method Based on Deep Learning for Concave-Convex Font Identification 基于深度学习的凹凸字体识别方法
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887880
Hui Li, Yapeng Liu, Yanni Dong, Chuanxu Wang
{"title":"Method Based on Deep Learning for Concave-Convex Font Identification","authors":"Hui Li, Yapeng Liu, Yanni Dong, Chuanxu Wang","doi":"10.1109/iWEM.2019.8887880","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887880","url":null,"abstract":"Compared with the bank card number of the flat font, the bank card number of the concave-convex font is not easily distinguishable from the background. The paper builds on the CTPN text area location, and uses the end-to-end identification network-CRNN to identify the concave-convex font. When training the data set, it is preprocessed by the convolution network to generate the corresponding feature model. When identifying, the test picture is processed by the same convolutional network as in the training, and the extracted picture features are compared with the picture features that generated during training, then the highest similarity is determined as the recognized number. The card number recognition accuracy of the concave-convex font can reach 92.33% when the card number is positioned accurately.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"23 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":"130068803","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
GPU-accelerated spherical near-to-far field transformation software for antenna near-field measurements 用于天线近场测量的gpu加速球形近远场转换软件
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887915
Yi S. Ding, Wenqiang Fan, Yuxin Zhao, Weichao Jiang
{"title":"GPU-accelerated spherical near-to-far field transformation software for antenna near-field measurements","authors":"Yi S. Ding, Wenqiang Fan, Yuxin Zhao, Weichao Jiang","doi":"10.1109/iWEM.2019.8887915","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887915","url":null,"abstract":"In the field of antenna measurements, spherical nearfield scanning technique has been well established after years of development. This technique involves the near-to-far field transformation algorithm. The fast development of 5G wireless communication techniques with more applications of the massive wide-band antennas, demands more efficient spherical nearfield measurement systems. Therefore, the speed of the near-to-far field transformation deserves much more attention than before. This paper introduces the GPU-acceleration techniques to the transformation algorithm and develops highly efficient and vectorized Matlab codes. It can accurately treat the electrically large problems (larger than 500 wavelength). Current PC with medium CPU and GPU can treat a 500-wavelength antenna in 90 seconds, which exceeds the claimed speed of the IEEE standard algorithm SNIFT running on a single PC. This paper proves the efficiency of the GPU-acceleration technique in the spherical near-to-far field transformation algorithm.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"8 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":"133093786","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 Three-Dimensional Printed Dipole Antenna with Dual-Circular Polarization and Wide Beamwidth 双圆极化宽波束宽三维印刷偶极子天线
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887936
Liangying Li, Botao Feng
{"title":"A Three-Dimensional Printed Dipole Antenna with Dual-Circular Polarization and Wide Beamwidth","authors":"Liangying Li, Botao Feng","doi":"10.1109/iWEM.2019.8887936","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887936","url":null,"abstract":"In this paper, a three-dimensional (3D) printed low-profile wideband antenna for the fifth generation (5G) indoor communications is proposed. To obtain a compact size and wide-beamwidth characteristics, a 3D printed folded annular electrical dipole is designed. Furthermore, a pair of orthogonal -shape strips excited by a 90°-phase difference are arranged in the gaps of vertical plates to acquire the dual-circular polarization (CP) feature. The feeding network that is composed of a modified 3dB-hybrid coupler is printed below the ground to provide wide band and 90°-phase difference traits. Simulated results show that a wide bandwidth of 3.3 GHz-5.0 GHz (41%) with stable gain of approximately 6 dBi can be achieved. Besides, a wide beamwidth of 110° in dual CP directions as well as a low-profile of 0.18 $lambda_{0}$ can also be obtained.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"25 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":"123888078","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
Structural Damage Identification Based on AR Model and PSO-SVM 基于AR模型和PSO-SVM的结构损伤识别
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887866
W. Yumei, Diao Yansong, Liu Guodong, Sui Zongzhen, G. Dang
{"title":"Structural Damage Identification Based on AR Model and PSO-SVM","authors":"W. Yumei, Diao Yansong, Liu Guodong, Sui Zongzhen, G. Dang","doi":"10.1109/iWEM.2019.8887866","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887866","url":null,"abstract":"In this paper, we put forward a structural damage identification method based on autoregressive (AR) model and particle swarm optimization support vector machine (PSO-SVM). Firstly, AR model is established for acceleration response signal, and the model coefficients are extracted. Secondly, the difference of AR model coefficients under damaged and undamaged conditions is selected as the damage feature. Finally, PSO-SVM is used to distinguish the damage location of a structure. The validity and noise resistance of the method are verified by numerical simulation and analysis results of a five-floor steel offshore platform.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"67 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":"128532566","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
Flexible, Conformal, Electrically Small Yagi Antennas on a Small Conducting Cylinder 小型导电圆柱体上的柔性、共形、电小型八木天线
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887904
Yunlu Duan, M. Tang, Zhentian Wu, Mei Li
{"title":"Flexible, Conformal, Electrically Small Yagi Antennas on a Small Conducting Cylinder","authors":"Yunlu Duan, M. Tang, Zhentian Wu, Mei Li","doi":"10.1109/iWEM.2019.8887904","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887904","url":null,"abstract":"A flexible, low-profile, vertically polarized, electrically small antenna (ESA) is presented. By introducing a near-field resonant parasitic (NFRP) element and an interdigital structure in the driven monopole and a C-shaped slot on the reflecting monopole, respectively, a Yagi ESA with end-fire radiating is achieved. The performance characteristics are demonstrated stable when antenna is mounted on conducting cylinders with different radii. A 6-element array prototype was fabricated and measured. The measured results are in agreement with their simulated values. The measured results show that this low-profile $(mathrm{0.035lambda}_{mathrm{L})}$ and electrically small $(ka=mathrm{0.82})$ antenna operates in a frequency range centered at 1.7 GHz, and exhibits a 8.2% impedance bandwidth and a 6.4 dBi peak realized gain.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"27 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":"127138340","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
MOOCs and Electromagnetics Education: Survey, State-of-the-Art and Implementation Challenges mooc与电磁学教育:调查、最新技术和实施挑战
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887873
Laxmisha Rai, Dapeng Chen, Hong Li, Haiqing Liu
{"title":"MOOCs and Electromagnetics Education: Survey, State-of-the-Art and Implementation Challenges","authors":"Laxmisha Rai, Dapeng Chen, Hong Li, Haiqing Liu","doi":"10.1109/iWEM.2019.8887873","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887873","url":null,"abstract":"In the recent years, massive open online courses (MOOCs) are getting popular around the world. However, considering the rapid and exponential growth of online courses, there are very few attempts towards developing MOOCs related to Electromagnetics (EM) education. The simulations, animations, visualizations and interactive solutions are essential to understand EM concepts easily. This paper provides the overview existing attempts, state-of-the-art, challenges, and future directions.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"22 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":"127502349","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
Comparative Study on Directional Sensitivity of Patch-Antenna-Based Strain Sensors 贴片天线应变传感器方向灵敏度的比较研究
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887860
Lingling Wang, K. Chung
{"title":"Comparative Study on Directional Sensitivity of Patch-Antenna-Based Strain Sensors","authors":"Lingling Wang, K. Chung","doi":"10.1109/iWEM.2019.8887860","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887860","url":null,"abstract":"In this paper, we present a comparative study into the directional sensitivity of patch-antenna-based strain sensors. Two linearly-polarized (LP) patch sensors versus a circularly-polarized (CP) patch sensor with identical configurations are demonstrated. The strain occurred in real structures is commonly uncertain, the usefulness of LP-patch sensor becomes limited. Like the conventional strain gauges, it only be used if the strain direction is known beforehand. Therefore, a nearly-square CP-patch sensor for multi-directional strain monitoring is proposed here. In order to obtain high sensitivity, three novel strain sensing methods are proposed for strain monitoring. Multi-directional strain sensing is achieved by a proof-of-concept prototype. The simulated results verified by experimental results show that high sensitivities of these three methods were achieved.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"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":"128032429","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: 10
A Flexible Wearable Antenna Operating at ISM band 一种工作在ISM波段的柔性可穿戴天线
2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2019-09-01 DOI: 10.1109/iWEM.2019.8887878
Bowen Yan, Jifa Zhang, Hui Wang, Yan Shi, Weihua Zong
{"title":"A Flexible Wearable Antenna Operating at ISM band","authors":"Bowen Yan, Jifa Zhang, Hui Wang, Yan Shi, Weihua Zong","doi":"10.1109/iWEM.2019.8887878","DOIUrl":"https://doi.org/10.1109/iWEM.2019.8887878","url":null,"abstract":"A flexible antenna for wearable devices operating at the Industrial, Scientific, Medical (ISM) band is proposed in this paper. The antenna is printed on a $60 mumathrm{m}$ thick flexible substrate and fed by coplanar waveguide. Simulated bandwidth of the proposed antenna is 2.18-2.70 GHz.","PeriodicalId":428997,"journal":{"name":"2019 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"11 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":"128188366","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
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