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2019 IEEE International Conference on Computational Electromagnetics (ICCEM)最新文献

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Pattern Synthesis of a Time-modulated Vivaldi Linear Array with MOEA/D Algorithm 基于MOEA/D算法的时调制Vivaldi线性阵列方向图合成
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778972
Haotian Li, Yikai Chen, Shiwen Yang
{"title":"Pattern Synthesis of a Time-modulated Vivaldi Linear Array with MOEA/D Algorithm","authors":"Haotian Li, Yikai Chen, Shiwen Yang","doi":"10.1109/COMPEM.2019.8778972","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778972","url":null,"abstract":"In this paper, the single-pole single throw (SPST) radio frequency (RF) switches are investigated for pattern synthesis of a practical X-band 16-element Vivaldi linear array. With the periodicity of the SPST RF switches, the conventional digital phase shifters and digital attenuators are removed. The effective multiobjective evolutionary algorithm based on objective decomposition (MOEA/D) is employed for pattern synthesis. The patterns with -20.0 dB sidelobe level (SLL) are obtained at the fundamental, positive and negative first harmonics. Meanwhile, the scanning beams are also achieved.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114627819","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
On a dualband rectangular dielectric resonator antenna for WLAN applications 一种用于WLAN应用的双波段矩形介电谐振器天线
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8779057
Fang Xiaosheng, Chen Shuangming, Weng Lingpeng
{"title":"On a dualband rectangular dielectric resonator antenna for WLAN applications","authors":"Fang Xiaosheng, Chen Shuangming, Weng Lingpeng","doi":"10.1109/COMPEM.2019.8779057","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8779057","url":null,"abstract":"A slot-fed dualband rectangular dielectric resonator antenna (DRA) for WLAN applications is investigated. ANSYS HFSS was used to study the reflection coefficient, radiation patterns and antenna gain of the dualband DRA. The results show that it can provide two passbands in the ranges of 2.4-2.82 GHz and 5.07-5.54 GHz, which completely cover the 2.4-GHz/5.2-GHz WLAN bands. The proposed dualband DRA can provide a relatively larger high-to-low frequency ratio of ~2.1.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698885","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
Design of a Broadband Base Station Antenna Based on Tightly Coupled Structure 基于紧耦合结构的宽带基站天线设计
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778852
Zongkun Dai, Yonggang Zhou, Jiayou Wang
{"title":"Design of a Broadband Base Station Antenna Based on Tightly Coupled Structure","authors":"Zongkun Dai, Yonggang Zhou, Jiayou Wang","doi":"10.1109/COMPEM.2019.8778852","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778852","url":null,"abstract":"In this paper, a dual-polarized cross-dipoles base station antenna based on tightly coupled structure is proposed. The coupling effect between the orthogonal dipoles effectively broadens the impedance bandwidth of the antenna. Meanwhile, a resistive frequency selective surface is added between the antenna radiator and the metal reflector to absorb the resonant reflection wave, resulting in better radiation performance at high frequency. The simulation results show that the antenna can meet the 2G/3G/4G base station antenna criteria, and can operate in the 5G frequency band (3.4 GHz to 3.6GHz). The VSWR of both ports are lower than 1.5, and the isolation between two ports is greater than 49 dB. The half-power beam width varies from 60° to 70°, and the gain across band is greater than 8.5 dBi.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114815326","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
Wideband Focusing Gradient Meta-surface for High-gain Planar Lens Antenna Application 宽带聚焦梯度元曲面在高增益平面透镜天线中的应用
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8779145
Qiming Yu, Shaobin Liu, X. Kong, Zhengyu Huang, Yongdiao Wen, Yuehong Hu
{"title":"Wideband Focusing Gradient Meta-surface for High-gain Planar Lens Antenna Application","authors":"Qiming Yu, Shaobin Liu, X. Kong, Zhengyu Huang, Yongdiao Wen, Yuehong Hu","doi":"10.1109/COMPEM.2019.8779145","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8779145","url":null,"abstract":"A broadband transmitting focusing gradient meta-surface (FGMS) has been designed, which is used in application of lens antenna. The element of FGMS is composed of four metallic layers separated by three layers of dielectric, which can achieve high transmitting efficiencies and sufficient phase compensation in the wide operating band. The antennas are placed the focus of FGMS to build a broadband planar lens antenna system. The simulation results show that the lens achieves a gain of 15.6 dBi and achieves 8.44 dB higher than the bare patch antenna at 9.1 GHz. Furthermore, it enhanced the gain of the bare patch antenna from 8.2 GHz to 10 GHz.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114812660","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
Investigation of Segmentation Method for Enhancing High Frequency Simulation Accuracy of Q3D Extractor 提高Q3D提取器高频仿真精度的分割方法研究
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8779105
Chang Che, Huapeng Zhao, Yuandong Guo, Jun Hu, Hongseok Kim
{"title":"Investigation of Segmentation Method for Enhancing High Frequency Simulation Accuracy of Q3D Extractor","authors":"Chang Che, Huapeng Zhao, Yuandong Guo, Jun Hu, Hongseok Kim","doi":"10.1109/COMPEM.2019.8779105","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8779105","url":null,"abstract":"ANSYS Q3D Extractor is a fast quasi-static 3D solver for extracting lumped RLGC parameters and SPICE models. Although Q3D Extractor is faster than full wave simulation, it results in inaccuracies at high frequency simulation, especially for PCB sructures. This paper proposes a method of improving the accuracy of high frequency simulations by using segmentation. For the convenience of study, a transmission line on PCB is selected as the device under test without sacrificing generality, and HFSS simulation results and measurement data are used as reference. Extensive simulations are performed to investigate the effectiveness of segmentation method. It is found that by dividing the transmission line into a set of electrically small segments, the high frequency simulation accuracy can be effectively enhanced. Some other relevant tips for using Q3D are also presented.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121612752","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
Automatic Pedestrians Segmentation Based on Machine Learning in Surveillance Video* 基于机器学习的监控视频行人自动分割*
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8779084
Yusi Yang, Lan Lin
{"title":"Automatic Pedestrians Segmentation Based on Machine Learning in Surveillance Video*","authors":"Yusi Yang, Lan Lin","doi":"10.1109/COMPEM.2019.8779084","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8779084","url":null,"abstract":"Pedestrian detection and segmentation play an important role in video surveillances. This paper presents a novel pipeline framework for automatic pedestrian detection and segmentation by combining machine learning with traditional computer visual methods. In particular, the Histogram of Oriented Gradient (HOG) and Support Vector Machine (SVM) are employed for pedestrian detection, and then the frame difference method is adopted for the tracking of the pedestrian. GrabCut and Mask R-CNN methods are used in the segmentation of pedestrians. The experiments are conducted on common benchmarks. The experimental results show that our method has made significant progress in automatic pedestrian detection and segmentation compared to the traditional Grabcut method.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115152052","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
Modeling of GaAs Multiplier Schottky Diode in Terahertz Band 太赫兹波段GaAs倍频肖特基二极管的建模
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778899
Nan Hu, Wenqing Xie, Jianrui Liu, Shuang Liu, Q. Zeng, Yanbin Luo
{"title":"Modeling of GaAs Multiplier Schottky Diode in Terahertz Band","authors":"Nan Hu, Wenqing Xie, Jianrui Liu, Shuang Liu, Q. Zeng, Yanbin Luo","doi":"10.1109/COMPEM.2019.8778899","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778899","url":null,"abstract":"Modeling of terahertz multiplier GaAs Schottky diodes was realized by divided into nonlinear part and linear parasitic part. The nonlinear SPICE parameters of Schottky diode was obtained by the DC measurement. The linear parasitic of GaAs Schottky diode was extracted by simulation in the electromagnetic field software of HFSS. The circuit model of diodes was realized in the circuit software of ADS. The non-linear junction part of the diode was modified to take into account the self-heating effect during actual operation. A frequency multiplier operating at 170 GHz was designed and implemented based on the mode. The measured and simulated frequency multiplier efficiency trends are in good agreement.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122923848","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
28 GHz Phased Transmitarray Antennas for 5G Applications 用于5G应用的28 GHz相控发射阵列天线
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778996
Peng-Yu Feng, S. Qu
{"title":"28 GHz Phased Transmitarray Antennas for 5G Applications","authors":"Peng-Yu Feng, S. Qu","doi":"10.1109/COMPEM.2019.8778996","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778996","url":null,"abstract":"A phased transmitarray antenna (TAA) is proposed at 28 GHz for the fifth-generation (5G) base station applications in this paper. The TAA is composed of the subwavelength low-pass elements, featuring an aperture area of 130 × 130 mm2. Meanwhile, a 4×4-element phased array antenna (PAA) is employed to illuminate the TAA. By elaborately deploying the excitation phases of the PAA feed, the proposed PAA-fed TAA achieves high-gain beam scannings always with full-power excitations, thus realizing high effective isotropic radiated power (EIRP) that is greatly expected in the radio frequency (RF) system. Measured results match reasonably well with the simulated ones, validating the extensively potential applicabilities of the proposed design in the future 5G wireless cellular networks.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123383184","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
Design and Analysis of Near Field Mid-frequency Metamaterial lens loaded Vivaldi Antenna 近场中频超材料透镜加载维瓦尔第天线的设计与分析
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778988
Kerong Xu, Yeqiang Li, Xiangxiang Li, Suzhen Ye, Zhihong Zhang, Changsheng Wang
{"title":"Design and Analysis of Near Field Mid-frequency Metamaterial lens loaded Vivaldi Antenna","authors":"Kerong Xu, Yeqiang Li, Xiangxiang Li, Suzhen Ye, Zhihong Zhang, Changsheng Wang","doi":"10.1109/COMPEM.2019.8778988","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778988","url":null,"abstract":"This paper presents the extended research of the near field phase correcting metamaterial lens (PCL) loaded Vivaldi antenna. The mid-frequency PCL is designed based on the extracted phase error along polarization direction at 10 GHz from full-wave simulation. The mid-frequency PCL could balance the gain enhancement and gain bandwidth of the Vivaldi antenna effectively. Further, comparison of gain between the high- and mid-frequency PCL loaded Vivaldi antenna is made. The results reveal that chosen of the reference frequency of phase error is of vital importance to gain enhancement over entire band and overall profile of the antenna.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128316710","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
Differentially SIW TE20-Mode Fed Substrate Integrated Filtering Dielectric Resonator Antenna for 5G Millimeter Wave Application 差分SIW te20模馈底集成滤波介质谐振器天线在5G毫米波中的应用
2019 IEEE International Conference on Computational Electromagnetics (ICCEM) Pub Date : 2019-03-20 DOI: 10.1109/COMPEM.2019.8778961
H. Tang, Changwu Tong, Jian‐Xin Chen, Cheng Shao, W. Qin, Wenwen Yang
{"title":"Differentially SIW TE20-Mode Fed Substrate Integrated Filtering Dielectric Resonator Antenna for 5G Millimeter Wave Application","authors":"H. Tang, Changwu Tong, Jian‐Xin Chen, Cheng Shao, W. Qin, Wenwen Yang","doi":"10.1109/COMPEM.2019.8778961","DOIUrl":"https://doi.org/10.1109/COMPEM.2019.8778961","url":null,"abstract":"A differential substrate integrated filtering dielectric resonator antenna (DRA) fed by TE20-mode in substrate integrated waveguide (SIW) for 5G millimeter wave (mm-Wave) systems is proposed. The dielectric resonator (DR) acts as a radiator as well as the last resonator of a bandpass filter simultaneously to realize a filtering antenna. The DR operates at the typical differential TE111 mode and is excited by TE20 mode of SIW. The differential feeding scheme provides the antenna with an improvement on radiation pattern symmetry and low cross-polarization level. Besides, this antenna can be manufactured using standard printed circuit board (PCB) technology which minimizes assembly errors. For demonstration, a prototype based on the proposed design theory is designed and obtains an impedance bandwidth of 10.3% from 24.7 GHz to 27.4 GHz, an average gain of 6.7 dBi and a cross-polarization level lower than -35 dB in E-plane and -20 dB in H-plan.","PeriodicalId":342849,"journal":{"name":"2019 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121340637","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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