Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496597
Jixuan Liu, X. Kong, Shaobin Liu
A single layer multi-polarization transmitarray is presented in this paper, whose structure can be much simpler than the traditional multi-layer frequency selective surface transmitarray. The proposed transmitarray consists of numerous split ring elements and has three working conditions. It is designed, simulated and measured in C-band. The measurement result shows that the transmitarray can switch polarization of the incident wave and set separation beam direction at the same time
{"title":"Single Layer Multi-Polarization Transmitarray in C-Band with Beam-Steering Capability","authors":"Jixuan Liu, X. Kong, Shaobin Liu","doi":"10.1109/COMPEM.2018.8496597","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496597","url":null,"abstract":"A single layer multi-polarization transmitarray is presented in this paper, whose structure can be much simpler than the traditional multi-layer frequency selective surface transmitarray. The proposed transmitarray consists of numerous split ring elements and has three working conditions. It is designed, simulated and measured in C-band. The measurement result shows that the transmitarray can switch polarization of the incident wave and set separation beam direction at the same time","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121037732","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496633
Chunbei Luo, Xiaowei Mei, Hai Lin
A 3D beam tracing method for modelling complex urban environment radio propagation is presented. A partial scenario centering on the transmitting antenna is extracted and the corresponding localized KD-tree is constructed for accelerating intersection tests between beams and triangular facets. For validation of the proposed method, simulation results of realistic urban environment are compared with measurements.
{"title":"Localized KD-Tree Accelerated Beam Tracing Method for Modelling Complex Urban Environment Propagation","authors":"Chunbei Luo, Xiaowei Mei, Hai Lin","doi":"10.1109/COMPEM.2018.8496633","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496633","url":null,"abstract":"A 3D beam tracing method for modelling complex urban environment radio propagation is presented. A partial scenario centering on the transmitting antenna is extracted and the corresponding localized KD-tree is constructed for accelerating intersection tests between beams and triangular facets. For validation of the proposed method, simulation results of realistic urban environment are compared with measurements.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114014560","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496569
Z. Huang, Y. Cheng
A mathematical model for near-field sparse array antennas synthesis is established in this work for the first time. An algorithm based on the multi-task compressive sensing method is employed to obtain the element position and excitation coefficient fitting a desired near-field radiation pattern. Numerical results validate the effectiveness of the proposed method to synthesize different types of desired patterns with more than 30% of elements saved compared with uniformly spaced array.
{"title":"Synthesis of Sparse Near-Field Focusing Antenna Arrays Based on Bayesian Compressive Sensing","authors":"Z. Huang, Y. Cheng","doi":"10.1109/COMPEM.2018.8496569","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496569","url":null,"abstract":"A mathematical model for near-field sparse array antennas synthesis is established in this work for the first time. An algorithm based on the multi-task compressive sensing method is employed to obtain the element position and excitation coefficient fitting a desired near-field radiation pattern. Numerical results validate the effectiveness of the proposed method to synthesize different types of desired patterns with more than 30% of elements saved compared with uniformly spaced array.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132942352","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496497
Junbo Liu, Jun Hu, Yongpin P. Chen
In lasing without inversion, the essential idea is the absorption in cancellation by atomic coherence and interference. Usually this is accomplished in three-level atomic systems. In this work, the interaction of a three-level atom and the external electromagnetic field is discussed by the Maxwell-Schrddinger model. The atom is treated quantum mechanically by the Schrddinger equation, whereas the field is treated classically by the Maxwell's equations. An example is presented to demonstrate the effect of coherent trapping.
{"title":"The Maxwell-Schrödinger Model for Three-Level Atomic System with Electromagnetic Field","authors":"Junbo Liu, Jun Hu, Yongpin P. Chen","doi":"10.1109/COMPEM.2018.8496497","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496497","url":null,"abstract":"In lasing without inversion, the essential idea is the absorption in cancellation by atomic coherence and interference. Usually this is accomplished in three-level atomic systems. In this work, the interaction of a three-level atom and the external electromagnetic field is discussed by the Maxwell-Schrddinger model. The atom is treated quantum mechanically by the Schrddinger equation, whereas the field is treated classically by the Maxwell's equations. An example is presented to demonstrate the effect of coherent trapping.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132289437","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496733
Xing-Yu Dong, Wenwen Yang, Jian‐Xin Chen
In this paper, a novel wideband polarization reconfigurable dielectric resonator antenna (DRA) is proposed. Since only five p-i-n diodes are needed to implement the reconfigurablility and the reconfigurable circuit is isolated from the DRA by the ground plane, the antenna shows a simple structure. By combing the two resonant frequencies of DR mode and DR-loaded cross-slot mode, the antenna can achieve a wide operating bandwidth. Simulated results show that the antenna can achieve a 3-dB axial ratio (AR) bandwidth of 16% for circular polarization (CP) states, an impedance bandwidth of 19% for linear polarization (LP) state with a cross-polarization level of better than 25 dB, and a peak gain of 7 dBi for all states.
{"title":"Wideband Dielectric Resonator Antenna with Polarization Reconfigurability","authors":"Xing-Yu Dong, Wenwen Yang, Jian‐Xin Chen","doi":"10.1109/COMPEM.2018.8496733","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496733","url":null,"abstract":"In this paper, a novel wideband polarization reconfigurable dielectric resonator antenna (DRA) is proposed. Since only five p-i-n diodes are needed to implement the reconfigurablility and the reconfigurable circuit is isolated from the DRA by the ground plane, the antenna shows a simple structure. By combing the two resonant frequencies of DR mode and DR-loaded cross-slot mode, the antenna can achieve a wide operating bandwidth. Simulated results show that the antenna can achieve a 3-dB axial ratio (AR) bandwidth of 16% for circular polarization (CP) states, an impedance bandwidth of 19% for linear polarization (LP) state with a cross-polarization level of better than 25 dB, and a peak gain of 7 dBi for all states.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134520974","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496530
Pengbo Zhu, Dawei Song, S. Tao, Rushan Chen
In order to extract the target's geometric electromagnetic characteristics effectively from the radar echo, this paper proposes a fast feature parameter extraction method of attributed scattering center model. We use the orthogonal matching pursuit (OMP) algorithm to estimate the attributed scattering center model. In the process of OMP algorithm, the RELAX algorithm is used to correct the extracted signal components. Compared with the traditional super-resolution algorithm based on point-scattering model, this algorithm can effectively solve the problem of discontinuity of components. And it is more accurate to describe the geometric features and position of the target.
{"title":"Target Recognition Based on Attributed Scattering Center Models","authors":"Pengbo Zhu, Dawei Song, S. Tao, Rushan Chen","doi":"10.1109/COMPEM.2018.8496530","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496530","url":null,"abstract":"In order to extract the target's geometric electromagnetic characteristics effectively from the radar echo, this paper proposes a fast feature parameter extraction method of attributed scattering center model. We use the orthogonal matching pursuit (OMP) algorithm to estimate the attributed scattering center model. In the process of OMP algorithm, the RELAX algorithm is used to correct the extracted signal components. Compared with the traditional super-resolution algorithm based on point-scattering model, this algorithm can effectively solve the problem of discontinuity of components. And it is more accurate to describe the geometric features and position of the target.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115195532","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496576
Xingying Huo, Junhong Wang, Zheng Li, Yuanjian Li, Meie Chen, Zhan Zhang, Xiaoyu Han
The attenuation properties of homogeneous rectangular dielectric waveguide are studied for the design of low attenuation transmission line in millimeter waveband. The properties of transmission loss for different cross sections of waveguide are analyzed in terms of guided wave and surface wave. The field distributions along the transverse directions are also calculated and compared for the cases of different parameters. The results show that if the cross section of the waveguide is properly designed, the rectangular dielectric waveguide can realize a relatively low transmission attenuation, which could be used in the application of next generation (5G) of wireless communication systems.
{"title":"Propagation Characteristics of Rectangular Dielectric Waveguide at Millimeter Waveband","authors":"Xingying Huo, Junhong Wang, Zheng Li, Yuanjian Li, Meie Chen, Zhan Zhang, Xiaoyu Han","doi":"10.1109/COMPEM.2018.8496576","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496576","url":null,"abstract":"The attenuation properties of homogeneous rectangular dielectric waveguide are studied for the design of low attenuation transmission line in millimeter waveband. The properties of transmission loss for different cross sections of waveguide are analyzed in terms of guided wave and surface wave. The field distributions along the transverse directions are also calculated and compared for the cases of different parameters. The results show that if the cross section of the waveguide is properly designed, the rectangular dielectric waveguide can realize a relatively low transmission attenuation, which could be used in the application of next generation (5G) of wireless communication systems.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114572481","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496615
Lijuan Shi, Ziwei Yan, Lixia Yang
The implementation of total-field/scattered-field (TF/SF) boundary for finite-difference time-domain (FDTD) method based upon FCC grids was proposed in this paper. The update equations of the electric and magnetic field components on the TF/SF boundary are derived. The effectiveness of the TF/SF boundary is verified by simulating the amplitude distribution of the vertical and oblique incident plane waves in the whole calculation region. This research can provide necessary basis for further analyzing electromagnetic scattering of targets using FDTD method based upon FCC grids.
{"title":"Implementation of TF/SF Boundary for FDTD Method on Face-Centered-Cubic (FCC) Grids","authors":"Lijuan Shi, Ziwei Yan, Lixia Yang","doi":"10.1109/COMPEM.2018.8496615","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496615","url":null,"abstract":"The implementation of total-field/scattered-field (TF/SF) boundary for finite-difference time-domain (FDTD) method based upon FCC grids was proposed in this paper. The update equations of the electric and magnetic field components on the TF/SF boundary are derived. The effectiveness of the TF/SF boundary is verified by simulating the amplitude distribution of the vertical and oblique incident plane waves in the whole calculation region. This research can provide necessary basis for further analyzing electromagnetic scattering of targets using FDTD method based upon FCC grids.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116858831","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496692
Lei Ge, Xujun Yang
A differentially-driven dual-polarized high-gain stacked patch antenna is presented in this paper. Three-layer stacked patches are adopted to increase the impedance bandwidth of the antenna. Each of the three stacked patches are inserted with four shorting posts for enhancing the antenna gain. A wide band and a high isolation can be realized. Moreover, the antenna possesses the gain of as high as 11 dBi by the proposed design mechanism.
{"title":"A High-Gain Dual-Polarized Antenna","authors":"Lei Ge, Xujun Yang","doi":"10.1109/COMPEM.2018.8496692","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496692","url":null,"abstract":"A differentially-driven dual-polarized high-gain stacked patch antenna is presented in this paper. Three-layer stacked patches are adopted to increase the impedance bandwidth of the antenna. Each of the three stacked patches are inserted with four shorting posts for enhancing the antenna gain. A wide band and a high isolation can be realized. Moreover, the antenna possesses the gain of as high as 11 dBi by the proposed design mechanism.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117151391","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}
Pub Date : 2018-03-01DOI: 10.1109/COMPEM.2018.8496736
Jing Cai, Y. Zhou
We propose a compact band-pass filter based on spoof localized surface plasmons (LSPs), which consists of four rectangular metal rings with corrugated grooves. It has been shown that the couplings between the resonators produce the flat-top transmission response and sharper out-of-band rejection. The simulation results validate the functionalities. It is believed that the proposed filter could be applied in the high-performance circuit design with compact size.
{"title":"A Compact Surface Plasmonic Band-Pass Filter with Sharp Out-of-Band Rejection","authors":"Jing Cai, Y. Zhou","doi":"10.1109/COMPEM.2018.8496736","DOIUrl":"https://doi.org/10.1109/COMPEM.2018.8496736","url":null,"abstract":"We propose a compact band-pass filter based on spoof localized surface plasmons (LSPs), which consists of four rectangular metal rings with corrugated grooves. It has been shown that the couplings between the resonators produce the flat-top transmission response and sharper out-of-band rejection. The simulation results validate the functionalities. It is believed that the proposed filter could be applied in the high-performance circuit design with compact size.","PeriodicalId":221352,"journal":{"name":"2018 IEEE International Conference on Computational Electromagnetics (ICCEM)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123519641","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}
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