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2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)最新文献

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MoM/BI-RME method for the modeling of frequency selective surfaces and printed circuits 用于频率选择表面和印刷电路建模的MoM/BI-RME方法
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995654
M. Bozzi, M. Pasian, L. Perregrini
{"title":"MoM/BI-RME method for the modeling of frequency selective surfaces and printed circuits","authors":"M. Bozzi, M. Pasian, L. Perregrini","doi":"10.1109/NEMO.2014.6995654","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995654","url":null,"abstract":"This paper outline the basic theory and describes the most significant applications of the MoM/BI-RME method for the modeling of planar periodic structures and printed circuits. The MoM/BI-RME method is based on the solution of an integral equation by the Method of Moments (MoM) with entire-domain basis functions. In the case of arbitrarily shaped domains, the basis functions are calculated numerically by the Boundary Integral-Resonant Mode Expansion (BI-RME) method. The MoM/BI-RME method has been applied to the modeling of a variety of structures, including frequency selective surfaces, reflectarrays, shielded microwave printed circuits, and electromagnetic band-gap structures. An outline of the major applications is reported in this paper.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"45 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131722634","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
On the development and evaluation of spatial domain Green Functions for multilayered structures with conductive sheets 导电片层多层结构空间域格林函数的发展与评价
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995699
I. Koufogiannis, M. Mattes, J. Mosig
{"title":"On the development and evaluation of spatial domain Green Functions for multilayered structures with conductive sheets","authors":"I. Koufogiannis, M. Mattes, J. Mosig","doi":"10.1109/NEMO.2014.6995699","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995699","url":null,"abstract":"This work focuses on Green Functions (GFs) of planar multilayered structures that may include arbitrary number of conductive sheets. The spectral domain GFs are derived through an automatized strategy based on the propagator matrix technique, while the spatial domain counterparts are evaluated numerically using a novel, efficient and error controlled numerical method. All the procedures remain general to accommodate for the tensorial nature of the conductivity of the sheets. Numerical examples of GFs for the Mixed Potential Integral Equation method are provided validating the proposed algorithms.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114171314","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
GPU-based three-dimensional calculation of lightning-generated electromagnetic fields 基于gpu的雷击电磁场三维计算
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995687
G. Pyrialakos, T. Zygiridis, N. Kantartzis, T. Tsiboukis
{"title":"GPU-based three-dimensional calculation of lightning-generated electromagnetic fields","authors":"G. Pyrialakos, T. Zygiridis, N. Kantartzis, T. Tsiboukis","doi":"10.1109/NEMO.2014.6995687","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995687","url":null,"abstract":"We present and validate a computational approach for the efficient calculation of lightning-produced electromagnetic fields and solution of pertinent problems in realistic environments. Given that various factors, such as ground-material inhomogeneities and irregular earth surface, may inhibit the utilization of simplified approaches, the finite-difference time-domain method is applied in its general three-dimensional formulation, so that important details are taken into consideration. As lightning problems usually call for a significant number of computations, the numerical approach is parallelized by exploiting the computing capabilities of contemporary graphics-processing-units. The proposed implementation results in serious shortening of the simulations' duration and facilitates the study of problems with uncertainties, thus contributing to the development of a useful tool for the study of lightning-related phenomena.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125374961","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
The coplanar waveguide characteristics using hybrid green's function and conformal mapping technique 利用混合格林函数和保角映射技术研究共面波导特性
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995694
Chao-Shun Yang, C. Jou
{"title":"The coplanar waveguide characteristics using hybrid green's function and conformal mapping technique","authors":"Chao-Shun Yang, C. Jou","doi":"10.1109/NEMO.2014.6995694","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995694","url":null,"abstract":"In this paper, a simple hybrid method based on green's function and conformal mapping technique is presented. Here, an odd-mode symmetrical coplanar waveguide (CPW) dimension is demonstrated by the hybrid method based on the symmetrical boundary condition. Most of important, the simple hybrid method can be a candidate to deal with complicated coupling problem (the odd-mode problem of the asymmetrical CPW) considering appropriate eigenfunction.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128055948","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
Network-based broadband modeling of material properties and passives from DC, RF, to THz domain accounting for anisotropy 基于网络的材料特性宽带建模和无源从直流，射频，太赫兹域各向异性的计算
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995707
S. Wane, L. Leyssenne, D. Bajon, S. Massenot, J. Russer, Peter Russer, An-Yu Kuo, M. Brenneman
{"title":"Network-based broadband modeling of material properties and passives from DC, RF, to THz domain accounting for anisotropy","authors":"S. Wane, L. Leyssenne, D. Bajon, S. Massenot, J. Russer, Peter Russer, An-Yu Kuo, M. Brenneman","doi":"10.1109/NEMO.2014.6995707","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995707","url":null,"abstract":"In this paper, experimental characterization and modeling of inhomogeneous materials from RF, mm-Wave to THz frequencies with emphasis on anisotropic materials including Liquid Crystal Polymers (LCP) and patterned silicon substrates using DT mesh are presented. Network-based broadband extraction of complex permittivity values and dissipation factors for various materials are discussed towards derivation of scalable models fulfilling Kramers-Kronig relationships for use in Time-Domain and Frequency-Domain modeling analysis.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123053763","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
Nonlinear transient simulation of mixed EM/circuit-level system blocks 电磁/电路级混合系统模块的非线性暂态仿真
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995719
T. Brazil
{"title":"Nonlinear transient simulation of mixed EM/circuit-level system blocks","authors":"T. Brazil","doi":"10.1109/NEMO.2014.6995719","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995719","url":null,"abstract":"One of the most important challenges in nonlinear high-frequency circuit simulation is to incorporate linear, time-invariant circuit blocks described in the frequency-domain, within a separate set of nonlinear integro-differential equations in the time-domain describing semiconductor devices etc. Often the linear representation is derived from EM analysis. This paper reviews some existing approaches to this type of problem including those based on Vector Fitting and an approach based on a non-uniform discrete-time impulse response.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122165568","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
A derived concise circuit model for electrically small antennas 推导了一种小型电天线的简明电路模型
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995679
L. Yeung, Ke-Li Wu
{"title":"A derived concise circuit model for electrically small antennas","authors":"L. Yeung, Ke-Li Wu","doi":"10.1109/NEMO.2014.6995679","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995679","url":null,"abstract":"The concept of generalized complex inductance for the partial element equivalent circuit (PEEC) technique is introduced to model microstrip radiation problems. Using the semi-analytical Green's functions for microstrip substrates, the imaginary part of this generalized complex inductance can be shown to represent a frequency-dependent resistance containing information about the losses from spatial radiations (spherical and lateral) and surface waves (cylindrical). Hence, different radiation components can be derived separately, providing a useful and unique feature for representing high-speed/high-frequency microstrip structures and antennas in the network domain.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126280392","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
Application of Modified Bayesian Optimization Algorithm to the design of reflectarray antenna 修正贝叶斯优化算法在反射天线设计中的应用
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995720
B. V. Ha, R. Zich, P. Pirinoli, S. Hum
{"title":"Application of Modified Bayesian Optimization Algorithm to the design of reflectarray antenna","authors":"B. V. Ha, R. Zich, P. Pirinoli, S. Hum","doi":"10.1109/NEMO.2014.6995720","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995720","url":null,"abstract":"In this paper, the recently introduced Modified Bayesian Optimization Algorithm (M-BOA) is applied to the design of a reflectarray antenna, with the aim of managing the mutual coupling between adjacent elements and reducing side-lobe levels. The obtained results are particularly interesting, since they demonstrate the feasibility of using optimization techniques to manage the mutual coupling between reflectarray elements to yield improved pattern performance.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698685","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
Coupled-oscillator systems: Efficient simulation with harmonic-balance based oscillator models 耦合振荡器系统:基于谐波平衡的振荡器模型的高效仿真
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995676
A. Suárez, F. Ramírez, S. Sancho
{"title":"Coupled-oscillator systems: Efficient simulation with harmonic-balance based oscillator models","authors":"A. Suárez, F. Ramírez, S. Sancho","doi":"10.1109/NEMO.2014.6995676","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995676","url":null,"abstract":"A two-level simulation methodology for coupled-oscillator systems is presented. The inner level corresponds to the harmonic-balance analysis of the elementary oscillator in free-running regime, so as to obtain a one-port reduced-order model. The outer level corresponds to the analysis of the coupled system, deriving a formulation that explicitly relates the oscillation-frequency deviation and the amplitude and phase distributions to magnitudes characterizing the coupling network and oscillator elements. A stability analysis based on this formulation is also carried out obtaining a mathematical condition that determines the stable phase-shift interval. The formulation provides valuable insight into the system behavior and allows the derivation of realistic criteria for an optimum coupled-system performance. The two-level analysis has been extended to injection-locked systems, which enables an investigation of the impact of the number of oscillator elements and relative position of the injection signal on the locking bandwidth.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126969642","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
Accurate concurrent simulation of passive and non-linear sub-circuits of a 24 GHz cellulose-based mixer 24 GHz纤维素混频器无源和非线性子电路的精确并行仿真
2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO) Pub Date : 2014-05-14 DOI: 10.1109/NEMO.2014.6995721
F. Alimenti, C. Mariotti, P. Mezzanotte, G. Orecchini, L. Roselli, M. Virili
{"title":"Accurate concurrent simulation of passive and non-linear sub-circuits of a 24 GHz cellulose-based mixer","authors":"F. Alimenti, C. Mariotti, P. Mezzanotte, G. Orecchini, L. Roselli, M. Virili","doi":"10.1109/NEMO.2014.6995721","DOIUrl":"https://doi.org/10.1109/NEMO.2014.6995721","url":null,"abstract":"The design of complex RF devices such as oscillators, amplifiers and mixers requires accurate CAD simulations. Usually these devices are designed by using the “Harmonic Balance” frequency domain technique that calculates the magnitude and phase of voltages (or currents) in a non-linear circuit. The passive part of the sub-system (matching circuits, filters, feeding networks) is simulated exploiting a linear, lumped element equivalent circuit based simulator, usually integrated in the same software suite. In order to improve the overall accuracy of the design method the passive part of the circuit can be optimized by means of EM full-wave simulations. This paper proposes an efficient and accurate approach exploiting the interfacing capabilities of the modern EM software to design an innovative 24 GHz single-balanced diode mixer exploiting cellulose substrate; the ADS Harmonic Balance simulator has been adopted for the non-linear part and the CST Microwave Studio for the passive one.","PeriodicalId":273349,"journal":{"name":"2014 International Conference on Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122083308","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
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