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2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)最新文献

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Fitting EM Scattering of 3D Rough Surface using Deep Neural Networks 基于深度神经网络的三维粗糙表面电磁散射拟合
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060806
Zhi-Long Yang, Shilei Fu, Jing Yuan, Zihao Zhao, Hongxia Ye, F. Xu
{"title":"Fitting EM Scattering of 3D Rough Surface using Deep Neural Networks","authors":"Zhi-Long Yang, Shilei Fu, Jing Yuan, Zihao Zhao, Hongxia Ye, F. Xu","doi":"10.23919/ACES48530.2019.9060806","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060806","url":null,"abstract":"This paper explores the potential of deep neural networks to fit electromagnetic scattering problems. We use numerically calculated EM scattering data to train deep neural network so that it can be used to predict scattering of a new problem. First, we calculate the induced current of a randomly rough surface incident by tapered waves using three-dimensional method of moment (MoM) based on beam simulation method[1]. Then, we use the data to train pix2pix network[2] where the rough surface is used as input and the induced current is used as the desired output. The results show the feasibility of the basic idea of this paper. It provides a new way to solve the calculation of electromagnetic forward problems and paves the way for the corresponding calculation of electromagnetic inverse problems.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127939897","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 Low Frequency Super Wideband Planar Sleeve Monopole Antenna with Lumped Elements Loading 集总元件加载的低频超宽带平面套筒单极天线
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060651
Yinfeng Xia, Jianfeng Jiang, Wei Xue, Yingsong Li
{"title":"A Low Frequency Super Wideband Planar Sleeve Monopole Antenna with Lumped Elements Loading","authors":"Yinfeng Xia, Jianfeng Jiang, Wei Xue, Yingsong Li","doi":"10.23919/ACES48530.2019.9060651","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060651","url":null,"abstract":"In this paper, a low frequency super wideband sleeve-like monopole antenna with lumped elements loading is proposed for HF, VHF and UHF applications. The proposed antenna fed by coplanar waveguide (CPW) is composed of T-shaped radiation patch and sleeve structure, which is also loaded by some lumped elements to increase its bandwidth. The entire size of the devised antenna is $36times 35 text{cm}^{2} (0.0120lambdatimes 0.0117lambda)$, where $lambda$ is the free-space wavelength at the lowest operation frequency. The designed antenna is constructed and simulated by using the HFSS. The simulated results show that a −10 dB fractional bandwidth of 182.3% ranging from 10 MHz to 422 MHz is obtained for the developed antenna.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115878103","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
Unsupervised classification for Mini-RF SAR using $mathrm{m}-delta$ decomposition and Wishart classification 基于$ mathm {m}-delta$分解和Wishart分类的Mini-RF SAR无监督分类
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060691
Wenliang Zhang, Hongxia Ye
{"title":"Unsupervised classification for Mini-RF SAR using $mathrm{m}-delta$ decomposition and Wishart classification","authors":"Wenliang Zhang, Hongxia Ye","doi":"10.23919/ACES48530.2019.9060691","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060691","url":null,"abstract":"An improved unsupervised algorithm is proposed in this paper based on compact polarimetric (CP) synthesis aperture radar (SAR) data. Unlike previous algorithms that ignore the purity of the dominant scattering mechanism, this algorithm effectively integrates scattering characteristics with statistical properties. With high consistency between the result of classification and decomposition, the approach is proved to be a robust and applicable one with respect to lunar terrain classification and regolith identification.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132425218","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
Rectifier Automatic Design Based on An Improved Model 基于改进模型的整流器自动设计
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060552
Siping Gao, Yong-xin Guo, Hao Zhang
{"title":"Rectifier Automatic Design Based on An Improved Model","authors":"Siping Gao, Yong-xin Guo, Hao Zhang","doi":"10.23919/ACES48530.2019.9060552","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060552","url":null,"abstract":"Automatic rectifier design with the least adoption of optimization is desired since the conventional way of designing a rectifier requires a lot of efforts in optimizing design parameters. In this paper, we attempt to exploit an improved model of the rectification process to automatically work out all the design parameters. First, the culprit behind the inaccuracy of the conventional model of the rectification is identified. An improved analytical model is then proposed to address this problem. Based on the proposed model, the relationship between the rectification efficiency, the input power as well as the load resistance is revealed; the input impedance of the diode is also extracted. The final step consists in the synthesis of a matching network using the information of the input impedances of the diode and the whole rectifier circuit. Simulation results validate the proposed analytical model and the design methodology.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129983381","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 Subwavelength 1-Bit Broadband Reconfigurable Reflectarray Element Based on Slotting Technology 基于开槽技术的亚波长1位宽带可重构反射阵元件
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060646
Di Wang, Yunhua Tan, L. Yin, Tie-jun Huang, Pu‐Kun Liu
{"title":"A Subwavelength 1-Bit Broadband Reconfigurable Reflectarray Element Based on Slotting Technology","authors":"Di Wang, Yunhua Tan, L. Yin, Tie-jun Huang, Pu‐Kun Liu","doi":"10.23919/ACES48530.2019.9060646","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060646","url":null,"abstract":"A novel electronically reconfigurable reflectarray (RRA) element, based on slotting technique, is presented for an improved bandwidth performance. Composed by two substrate layers and one PIN diode, this element can be electronically controlled to generate two states with 180° phase difference, which is practical for large-aperture beam-scanning applications. As a result, a 1-bit phase shift is achieved within $180^{circ}pm 24^{circ}$ from 7.66 to 8.52 GHz, which indicates a wide relative bandwidth of 10.96%. Moreover, the element loss is smaller than 1 dB for two states. A DC bias circuit is designed without influence on the reflection performance of the element.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134391928","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
Low-Cost Design Optimization of Antenna with Heuristic Sample Selection Algorithm 基于启发式样本选择算法的天线低成本设计优化
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060610
Wenji Wen, Yubo Tian
{"title":"Low-Cost Design Optimization of Antenna with Heuristic Sample Selection Algorithm","authors":"Wenji Wen, Yubo Tian","doi":"10.23919/ACES48530.2019.9060610","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060610","url":null,"abstract":"A technique for design optimization of antenna structures is presented. Our approach uses a heuristic sample point selection algorithm to reduce the computational effort related to EM data acquisition necessary for Kriging surrogate model construction. The algorithm is illustrated by an planar wide-slot antennas with fork-shaped patch.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131133921","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 Miniaturized Unequal Power Divider Design for 5G Telecommunication systems 5G通信系统的小型化不均匀功率分配器设计
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060778
Yue Han, Guoming Qian, Yongjin Liao
{"title":"A Miniaturized Unequal Power Divider Design for 5G Telecommunication systems","authors":"Yue Han, Guoming Qian, Yongjin Liao","doi":"10.23919/ACES48530.2019.9060778","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060778","url":null,"abstract":"For 5G RF (Radio Frequency) devices, various instrumentation and sensors, there is an increasing demand for the miniaturization of microwave devices. The passive power divider has the advantages of stable operation and simple structure in various microwave systems, instrumentation, and a large number of applications in 5G, so the performance of the power divider will affect the performance of the entire telecommunication system to a large extent. The following shows a lumped $pi$ model output power ratio of 2:1 unequal Wilkinson power divider. Compared with the traditional structure, under the premise of ensuring that the performance meets the requirements, the size of the device can be greatly reduced, and the practical application value is obtained.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132862345","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
EMI Spectrum Identification and Suppression Methods for Synchronous Buck Converter 同步降压变换器电磁干扰频谱识别与抑制方法
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060696
Ziyao Chen, Shuguo Xie, Shenshen Luan, Xuchun Hao
{"title":"EMI Spectrum Identification and Suppression Methods for Synchronous Buck Converter","authors":"Ziyao Chen, Shuguo Xie, Shenshen Luan, Xuchun Hao","doi":"10.23919/ACES48530.2019.9060696","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060696","url":null,"abstract":"In general, the EMI problems of Printed circuit board (PCB) are caused by a variety of factors, such as ringing signal, clock signal and differential pairs of non-equal length. These problems are not easy to find and distinguish in the RE102 test, which will make difficult to the Subsequent rectification. In this paper, by analyzing the spectrum characteristics of the ringing signal in the DC-DC converter, we propose methods for identifying and suppressing the ringing signal interference. These methods can quickly determine the broadband EMI caused by the DC-DC converter from the RE102 test result of the DUT, and effectively guide the rectification program to suppress the EMI. The actual test result is given in the paper, which proves the effectiveness of the method.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133442494","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
Study on attenuation ratio of electromagnetic wave through a plasma under oblique incidence with SMM 斜入射下电磁波通过等离子体衰减比的研究
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060711
Wangchen Mao, Guanjun Xu, Jiahui Lai
{"title":"Study on attenuation ratio of electromagnetic wave through a plasma under oblique incidence with SMM","authors":"Wangchen Mao, Guanjun Xu, Jiahui Lai","doi":"10.23919/ACES48530.2019.9060711","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060711","url":null,"abstract":"In this paper, the attenuation ratio of obliquely incident electromagnetic (EM) wave in a plasma with Epstein profile is investigated. Based on the scattering matrix method, the effects of different parameters on the attenuation ratio under oblique incidence angle are analyzed. The numerical results show that EM wave with larger incidence angle is more likely to be absorbed in the plasma. In addition, the attenuation ratio can be changed by adjusting different plasma parameters.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133232257","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
Pattern Synthesis of Cylindrical Conformal Arrays Using Genetic Algorithm 基于遗传算法的圆柱共形阵列方向图合成
2019 International Applied Computational Electromagnetics Society Symposium - China (ACES) Pub Date : 2019-08-01 DOI: 10.23919/ACES48530.2019.9060744
Meiqin Lv, Juan Xu
{"title":"Pattern Synthesis of Cylindrical Conformal Arrays Using Genetic Algorithm","authors":"Meiqin Lv, Juan Xu","doi":"10.23919/ACES48530.2019.9060744","DOIUrl":"https://doi.org/10.23919/ACES48530.2019.9060744","url":null,"abstract":"In this paper, the omnidirectional element and the actual antenna element are used respectively on cylindrical antenna array, and compare the simulation effects of beam forming under the condition of two different antenna elements. Then a method using genetic algorithm to optimize the pattern of cylindrical conformal arrays. This approach could reduce the element number to sparse them.","PeriodicalId":247909,"journal":{"name":"2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126583204","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
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