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2015 IEEE International Conference on Computational Electromagnetics最新文献

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3D to 2D surface mesh parameterization for unstructured transmission line method simulations 三维到二维表面网格参数化的非结构化输电线方法仿真
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052654
H. Nasser, S. Greedy, T. Benson, A. Vukovic, P. Sewell
{"title":"3D to 2D surface mesh parameterization for unstructured transmission line method simulations","authors":"H. Nasser, S. Greedy, T. Benson, A. Vukovic, P. Sewell","doi":"10.1109/COMPEM.2015.7052654","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052654","url":null,"abstract":"Advances in small scale fabrication processes have led to the advent of very thin flexible devices such as flexible RFID tags and smart clothing. In a geometrical sense, these present themselves as curved 2D open surfaces embedded in a 3D domain. When simulating EM behavior on these surfaces at low frequencies, a full 3D field model can become computationally expensive in terms of memory and run times. The objective of this paper is to present a method for applying a 2D unstructured Transmission Line Method (TLM) simulation to open, curved surfaces embedded in a 3D domain, by providing a one-to-one mapping of the geometry to a 2D flat plane The simulation results are then mapped back to the original 3D geometry, negating the need for a full 3D simulation. Further, we demonstrate that if the surface material parameters are altered in the vicinity of high curvature, the proposed method is still effective.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"45 1","pages":"338-340"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84814683","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
FDTD analysis of HF heating effect on local ionosphere 高频加热对局部电离层影响的FDTD分析
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052647
Ye Zhou, Yi Wang, Q. Cao
{"title":"FDTD analysis of HF heating effect on local ionosphere","authors":"Ye Zhou, Yi Wang, Q. Cao","doi":"10.1109/COMPEM.2015.7052647","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052647","url":null,"abstract":"An auxiliary differential equation (ADE) finite-difference time-domain (FDTD) method is applied to analyze the effect of ionospheric high frequency (HF) heating on electromagnetic (EM) wave propagation. First ionosphere background parameters in East China generated from IRI are introduced in the study model and nonlinear phenomenon during ionospheric heating process at low altitude between 60 and 120km is simulated. Then vertical distribution of electron temperature in initial and saturation condition is used to simulate the EM wave propagation in the ionosphere. During the simulation, an ADE plasma model is employed to simulate the dispersive characteristics of the ionosphere. The simulation result shows that the ionospheric heating has a direct influence on the echo wave.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"37 1","pages":"318-320"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87705644","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
Dispersion in the 2D unstructured transmission line modelling (UTLM) method 二维非结构化传输线建模(UTLM)方法中的色散
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052657
L. Khashan, A. Vukovic, P. Sewell, T. Benson
{"title":"Dispersion in the 2D unstructured transmission line modelling (UTLM) method","authors":"L. Khashan, A. Vukovic, P. Sewell, T. Benson","doi":"10.1109/COMPEM.2015.7052657","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052657","url":null,"abstract":"In this paper the dispersion characteristics of the two-dimensional TLM method, based upon an unstructured triangular mesh, are investigated and compared against those of the TLM method based on structured rectangular mesh. This is done numerically on an example of plane wave propagation in an homogeneous free space. Phase errors of plane wave propagation are extracted for a variety of triangular meshes and compared to an equivalent conventional TLM mesh. The computational resources needed for TLM method based on triangular and rectangular grid to obtain the same numerical dispersion are also compared.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"17 1","pages":"347-349"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75694609","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
Full wave analysis of millimeter wave quasi-periodical structure for antenna applications by method of moments and its conjugate gradient solution on GPU/CPU platform 基于矩量法的天线毫米波准周期结构全波分析及其在GPU/CPU平台上的共轭梯度解
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052548
Zhe Song, Yan Zhang, Xing Mu, Houxing Zhou, W. Hong
{"title":"Full wave analysis of millimeter wave quasi-periodical structure for antenna applications by method of moments and its conjugate gradient solution on GPU/CPU platform","authors":"Zhe Song, Yan Zhang, Xing Mu, Houxing Zhou, W. Hong","doi":"10.1109/COMPEM.2015.7052548","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052548","url":null,"abstract":"In this paper, an accurate and efficient full wave analysis for millimeter wave quasi-periodical structure for antenna applications is realized. By extracting all the surface wave poles of the spectral domain multilayered Green's functions, the discrete complex image method (DCIM) can be adopted to fast evaluate their counter parts in spatial domain, and the mixed potential integral equation (MPIE) for method of moments (MoM) can be constructed. With the Jerusalem cross as a patch element on a dielectric layer, a quasi-periodical structure can be organized as the geometries gradually varied. By illuminate this kind of structure with an incident plane wave, the distribution of electric current on the metal surface can be obtained by solving the MoM equation and the forward scattering cross section can be fast calculated by the conjugate gradient (CG) algorithm written in CUDA and realized in NVIDIA graphic process unit (GPU). A layered structure with a 17×17 Jerusalem crosses at 30GHz was calculated and very good agreements have been found between the proposed method and commercial EM simulator (CST), while an improvement on efficiency is realized.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"24 1","pages":"41-42"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91088287","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
A miniaturized differentially fed implantable Hilbert curve fractal antenna at MICS band 微型化差分馈电可植入希尔伯特曲线分形天线
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052632
Hui Liu, Xiongying Liu
{"title":"A miniaturized differentially fed implantable Hilbert curve fractal antenna at MICS band","authors":"Hui Liu, Xiongying Liu","doi":"10.1109/COMPEM.2015.7052632","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052632","url":null,"abstract":"A miniaturized differentially fed implantable Hilbert curve fractal antenna is investigated. The antenna operates at the center frequency of 405 MHz, which lies in the 402-405 MHz medical implant communication services (MICS) band, and has a bandwidth of 77 MHz (372-449 MHz) with differential reflection coefficient less than -10 dB. Differentially fed and fractal technologies are employed to suit the differential circuitries of radio frequency integrated circuits (RFICs) and miniaturize the size of proposed antenna, respectively. The dimensions of the antenna are 9.3 × 9.3 × 0.635 mm3. The Specific Absorption Rate (SAR), as one crucial factor for implantable antennas, is simulated in HFSS three layer phantom. The good performance guarantees the proposed antenna to be a candidate in biomedicai applications.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"133 1","pages":"275-277"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89737615","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: 8
Compact dipole antenna with multiple radiation pattern reconfigurations 具有多重辐射方向图重构的紧凑偶极子天线
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052574
Y. Juan, W. Che, Wanchen Yang, Zhining Chen
{"title":"Compact dipole antenna with multiple radiation pattern reconfigurations","authors":"Y. Juan, W. Che, Wanchen Yang, Zhining Chen","doi":"10.1109/COMPEM.2015.7052574","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052574","url":null,"abstract":"An antenna with four sets of PIN diodes-loaded parasitic strips and reflectors is designed to realize multiple reconfigurable radiation pattern. Parasitic strips are placed between the dipole and reflectors to change impedance of the dipole, thus reducing the distance between the dipole and the reflector. The size of the whole antenna is only 0.1λ0×0.1λ0. Moreover, by switching and controlling the PIN diode, the parasitic strip and reflector can perform as a director or a reflector, a Yagi-Uda antenna. As a result, the antenna can provide three modes with nine fundamental radiation patterns. Two modes can realize an eight-beam scanning in the azimuth plane with a 45°-angle-interval at the frequency of 1.575GHz. The peak gain more than 7dBi of all the beams are achieved at the elevation angle of 60°. Another mode can generate an approximate conical radiation pattern. The maximum gain is 5.1 dBi, achieved at the elevation angle of 50°.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"10 1","pages":"112-114"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86850990","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
Integral equation domain decomposition method for scattering from thin coating objects 薄涂层散射的积分方程域分解方法
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052638
R. Zhao, Jun Hu, M. Jiang, Z. Nie
{"title":"Integral equation domain decomposition method for scattering from thin coating objects","authors":"R. Zhao, Jun Hu, M. Jiang, Z. Nie","doi":"10.1109/COMPEM.2015.7052638","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052638","url":null,"abstract":"In this paper, a novel non-conformal non-overlapping integral equation domain decomposition method with impedance boundary condition (IE-DDM-IBC) is presented to simulate the EM scattering from thin coating objects. By using the Robin transmission condition, the original object can be decomposed into several non-overlapping closed sub-domains, and each sub-domain can be meshed independently. It also provides an effective preconditioner to realize fast convergence for thin coating objects with multi-scale property.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"70 1","pages":"291-293"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86285156","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 terahertz waveguide-fed antipodal hyperbolic-sine tapered slot antenna based on silicon micromachine 基于硅微机械的太赫兹波导馈电对足双曲正弦锥形缝隙天线设计
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052661
Peng-fei Zhao, Qing Li, Hongda Lu, Bin Li, Yong Liu, X. Lv
{"title":"Design of terahertz waveguide-fed antipodal hyperbolic-sine tapered slot antenna based on silicon micromachine","authors":"Peng-fei Zhao, Qing Li, Hongda Lu, Bin Li, Yong Liu, X. Lv","doi":"10.1109/COMPEM.2015.7052661","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052661","url":null,"abstract":"A THz antipodal hyperbolic-sine tapered slot antenna (AHSTSA) designed on silicon is proposed in this paper. The antenna is feed by WR2.2 waveguide and work at 480GHz to 500GHz. The antipodal curved slots and feeding waveguide are designed to be monolithically fabricated by deep reactive-ion etching (DRIE), then sputtering gold, with gold-gold thermo-compression bonding at last. The simulation result of VSWR is below 1.25 within 480GHz to 520GHz. The AHSTSA shows asymmetric beamwidths of ~20° in both E- and H-plane, with a maximum gain of 17.7dBi. The cross polarization and sidelobe levels are less than -20.7dBi and -10.6dBi, respectively. The proposed AHSTSA can be used in THz imaging and detection systems.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"63 1","pages":"358-360"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84070005","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
Frequency tuning of the omnidirectional circularly polarized dielectric resonator antenna using parasitic patch 基于寄生贴片的全向圆极化介质谐振器天线频率调谐
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052634
Y. Pan
{"title":"Frequency tuning of the omnidirectional circularly polarized dielectric resonator antenna using parasitic patch","authors":"Y. Pan","doi":"10.1109/COMPEM.2015.7052634","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052634","url":null,"abstract":"An omnidirectional circularly polarized (CP) dielectric resonator antenna (DRA) with a parasitic patch loading on its top is investigated in this paper. It is found that the operating frequency of the antenna can be tuned by changing both the sizes of the patch and ground plane. The reflection coefficient, axial ratio (AR), radiation pattern and antenna gain of the proposed CP DRA are studied, and reasonable agreement between the measured and simulated results is observed.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"19 1","pages":"281-283"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72772980","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
Mode-matching analysis for double-layered substrate integrated and rectangular waveguide filter technology 双层基板集成矩形波导滤波技术的模式匹配分析
2015 IEEE International Conference on Computational Electromagnetics Pub Date : 2015-03-05 DOI: 10.1109/COMPEM.2015.7052590
J. Schorer, J. Bornemann
{"title":"Mode-matching analysis for double-layered substrate integrated and rectangular waveguide filter technology","authors":"J. Schorer, J. Bornemann","doi":"10.1109/COMPEM.2015.7052590","DOIUrl":"https://doi.org/10.1109/COMPEM.2015.7052590","url":null,"abstract":"The adaption of Mode Matching Techniques (MMTs) for an E-plane double-layer discontinuity is presented. The bottom layer is realized in substrate integrated waveguide (SIW) and the top layer in conventional waveguide technology. The calculations are validated by comparison with data from commercial field solvers. The verification shows a good match and qualifies the MMT routine as a suitable method to prototype magnetically coupled, double layer, mixed technology filters.","PeriodicalId":6530,"journal":{"name":"2015 IEEE International Conference on Computational Electromagnetics","volume":"12 1","pages":"158-160"},"PeriodicalIF":0.0,"publicationDate":"2015-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74580861","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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