Dissertations / Theses on the topic 'Finite-difference time-domain method'
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Eng, Ju-Ling. "Higher order finite-difference time-domain method." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1165607826.
Full textCiydem, Mehmet. "Ray Based Finite Difference Method For Time Domain Electromagnetics." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606633/index.pdf.
Full texts hyperbolic partial differential equations directly, Geometrical Optics tools (wavefronts, rays) and Taylor series have been utilized. Discontinuities of electromagnetic fields lie on wavefronts and propagate along rays. They are transported in the computational domain by transport equations which are ordinary differential equations. Then time dependent field solutions at a point are constructed by using Taylor series expansion in time whose coefficients are these transported distincontinuties. RBTD utilizes grid structure conforming to wave fronts and rays and treats all electromagnetic problems, regardless of their dimensions, as one dimensional problem along the rays. Hence CFL stability condition is implemented always at one dimensional eqaulity case on the ray. Accuracy of RBTD depends on the accuracy of grid generation and numerical solution of transport equations. Simulations for isotropic medium (homogeneous/inhomogeneous) have been conducted. Basic electromagnetic phenomena such as propagation, reflection and refraction have been implemented. Simulation results prove that RBTD eliminates numerical dispersion inherent to FDTD and is promising to be a novel method for computational electromagnetics.
Petit, Frédéric. "Reverberation Chamber Modeling Using Finite-Difference Time-Domain Method." Diss., University of Marne la Vallée, 2002. http://hdl.handle.net/10919/71555.
Full textTurer, Ibrahim. "Specific Absorption Rate Calculations Using Finite Difference Time Domain Method." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605200/index.pdf.
Full textKrishnaiah, K. Mohana. "Novel stable subgridding algorithm in finite difference time domain method." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262808.
Full textMeagher, Timothy P. "A New Finite Difference Time Domain Method to Solve Maxwell's Equations." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4389.
Full textCai, Ming. "Finite difference time domain method and its application in antenna analysis." Thesis, London South Bank University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263739.
Full textTomiso, Nayon. "Modeling electrically small apertures using the finite difference-time domain method." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42597.
Full textAbalenkovs, Maksims. "Huygens subgridding for the frequency-dependent/finite-difference time-domain method." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/huygens-subgridding-for-the-frequencydependentfinitedifference-timedomain-method(45581358-ff4d-4699-b3db-5bf76a021601).html.
Full textGarg, Nimisha. "Analysis of Slot Antennas Using the Finite Difference Time Domain Method." FIU Digital Commons, 2001. https://digitalcommons.fiu.edu/etd/3843.
Full textRouf, Hasan. "Unconditionally stable finite difference time domain methods for frequency dependent media." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/unconditionally-stable-finite-difference-time-domain-methods-for-frequency-dependent-media(50e4adf1-d1e4-4ad2-ab2d-70188fb8b7b6).html.
Full textWang, Shumin. "Improved-accuracy algorithms for time-domain finite methods in electromagnetics." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1061225243.
Full textPegoraro, Adrian. "Modelling heterogeneous nonlinear subwavelength systems with the finite difference time domain method." Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/27007.
Full textRandhawa, Banljinder Singh. "Electromagnetic modelling of curved structures using a hybrid finite-volume finite-difference time-domain method." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362043.
Full textAustin, Andrew Charles Mallory. "Interference modelling for indoor wireless systems using the finite-difference time-domain method." Thesis, University of Auckland, 2011. http://hdl.handle.net/2292/6843.
Full textFitzmaurice, Michael G. "A new finite-difference time-domain method applied to an open waveguide structure." Thesis, University of Ottawa (Canada), 1992. http://hdl.handle.net/10393/7950.
Full textZheng, Fenghua. "Novel unconditionally stable finite-difference time-domain method for electromagnetic and microwave modeling." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ63485.pdf.
Full textMartin, Torleif. "Broadband electromagnetic scattering and shielding analysis using the finite-difference time-domain method /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/tek669s.pdf.
Full textPapadopoulos, Stavros. "Electromagnetic modelling of dielectric geodesic radomes using the finite-difference time-domain method." Thesis, Queen Mary, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271150.
Full textGao, Xuejun. "Application of Finite-Difference Time-Domain Method To Calculate Power Converter Electromagnetic Fields." Clermont-Ferrand 2, 2003. http://www.theses.fr/2003CLF21425.
Full textHao, Yang. "The development and characterisation of a conformal FDTD method for oblique electromagnetic structures." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285559.
Full textDesamsetty, Srinivas. "Modified diamond dipole antenna for ultra wideband communications using finite difference time domain method." FIU Digital Commons, 2003. http://digitalcommons.fiu.edu/etd/2778.
Full textCherukuri, Chandrasekhar. "Analysis of coaxial fed U-slot patch antennas using finite difference time domain method." FIU Digital Commons, 2002. http://digitalcommons.fiu.edu/etd/2158.
Full textBajracharya, Sanjay. "Characterization and modeling of multi-conductor transmission line using Finite-difference Time-Domain method." FIU Digital Commons, 1996. http://digitalcommons.fiu.edu/etd/1372.
Full textKim, Ihn Seok. "Contributions to the time domain-finite difference method for the modeling of microwave structures." Thesis, University of Ottawa (Canada), 1990. http://hdl.handle.net/10393/5648.
Full textHäggblad, Jon. "Modified Stencils for Boundaries and Subgrid Scales in the Finite-Difference Time-Domain Method." Doctoral thesis, KTH, Numerisk analys, NA (stängd 2012-06-30), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95510.
Full textQC 20120530
Ma, Weili. "Discrete Green's function formulation of the finite difference time domain method and its application." Thesis, Queen Mary, University of London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408009.
Full textChen, Qiang. "Finite-difference time-domain method for combined large signal circuit and electromagnetic field analysis." Thesis, Queen's University Belfast, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337664.
Full textFutter, Peter W. "Advanced modelling of a borehole radar environment with the finite difference time domain method." Thesis, Stellenbosch : University of Stellenbosch, 2001. http://hdl.handle.net/10019.1/2478.
Full textOver the last decade, as the mining industry of South Africa is moving to ever deeper mines, the borehole radar is becoming an increasingly important field of research. In December 2000, Burger completed his thesis on Electromagnetic Modelling of a Borehole Radar Environment with the FDTD Method. The goal of this thesis is to extend the research presented in Burger's thesis, considering how more advanced modelling techniques can be applied to the FDTD analysis of the borehole radar environment. Some of these techniques include implementation of dispersive and conductive material models, and developing Uniaxial Perfectly Matched Layer boundary conditions for matching these model. Simulations were run to measure the performance of these boundary condition for matching dispersive and conductive materials. The thesis also includes the implementation of a parallel version of the FDTD algorithm using the Message Passing Interface library. Finally several realistic borehole models where simulated to test the accuracy of the code and to show how the code can be used to model real world problems.
Burger, Ernst H. "Electromagnetic modelling of a borehole radar environment with the finite difference time domain method." Thesis, Stellenbosch : University of Stellenbosch, 2000. http://hdl.handle.net/10019.1/3067.
Full textSouth Africa has an immensely rich reserve of minerals which still has to be exploited. The problem with these reserves is that they exist in reefs where the mining environment is extremely hazardous, and where mining is very expensive. These are only two of the reasons why borehole radar has recently become a very important field of research in the South African mining industry. These radars have to operate in rock, which has a number of electromagnetically problematic characteristics, which greatly complicate modelling and design of suitable radars. The goal of this project is to demonstrate how the Finite Difference Time Domain (FDTD) method may be used to electromagnetically model and simulate borehole radars and subterranean environments.
Çapoğlu, İlker R. "Techniques for Handling Multilayered Media in the FDTD Method." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16179.
Full textKung, Christopher W. "Development of a time domain hybrid finite difference/finite element method for solutions to Maxwell's equations in anisotropic media." Columbus, Ohio : Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1238024768.
Full textReinke, Charles M. "Simulation of Nonlinear Optical Effects in Photonic Crystals Using the Finite-Difference Time-Domain Method." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16270.
Full textChen, Carl Christopher. "Application of the finite-difference time-domain method to the analysis of microstrip patch antennas." FIU Digital Commons, 1996. http://digitalcommons.fiu.edu/etd/2127.
Full textChoi, Jinseong. "Modeling of power supply noise in large chips using the finite difference time domain method." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/14977.
Full textChan, Michael 1963. "Electromagnetic characterization of shielded multiconductor microstrip-line discontinuities using the time-domain finite-difference method." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/278050.
Full textRamli, Khairun Nidzam. "Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods : development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5443.
Full textRamli, Khairun N. "Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods. Development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5443.
Full textMinistry of Higher Education Malaysia and Universiti Tun Hussein Onn Malaysia (UTHM)
Lu, Ling. "Characterisation and application of left-handed meta-materials using the dispersive finite-difference time-domain method." Thesis, Queen Mary, University of London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436108.
Full textOw, Say Cheoh. "An investigation of alternating-direction implicit finite-difference time-domain (ADI-FDTD) method in numerical electromagnetics." Thesis, University of Hull, 2003. http://hydra.hull.ac.uk/resources/hull:5496.
Full textAlmeer, Hanan Syha. "High performance computing for the Finite Difference Time Domain method with the Huygens Absorbing Boundary Condition." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/high-performance-computingfor-the-finite-differencetime-domain-method-with-thehuygens-absorbing-boundarycondition(9f00807d-5c58-43c1-ada5-369b2d6507d4).html.
Full textBourgeois, Jacqueline M. "A complete three-dimensional electromagnetic simulation of ground-penetrating radars using the finite-difference time-domain method." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/14845.
Full textChilton, Ryan Austin. "H-, P- and T-Refinement Strategies for the Finite-Difference-Time-Domain (FDTD) Method Developed via Finite-Element (FE) Principles." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1219064270.
Full textSchlager, Kurt L. "The analysis and optimization of bow-tie and TEM horn antennas for pulse radiation using the finite-difference time-domain method." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/12915.
Full textSchuster, Christian. "Simulation, analysis, and parameter extraction of electronic components and circuits using the finite difference time domain method /." Zürich, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13522.
Full textYounies, Hassan Zeidan. "Design and electromagnetic characterization of microwave slotted rectangular waveguide applicators using the finite difference time domain method." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0023/MQ38422.pdf.
Full textHwang, Chieh-Tsao, and 黃傑超. "Extended Finite Difference Time Domain Method with Partial Finite Elements." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/97974651993597476852.
Full text國立臺灣大學
電機工程學研究所
87
The extended finite difference time domain method with partial finite elements is introduced in this dissertation. The method employs the conventional finite difference time domain method for most of the regular region but introduces the tetrahedral edge-based finite element scheme to model the region near the curved surfaces. Numerical results of early time response verified that the method has the advantages of accuracy, flexibility, stability, and computational efficiency. However, the late time instability and spurious dc modes are observed in the applications of solving the characteristics of the dielectric resonator. A novel scheme which combines the time average technique and frequency shifting technique is thus proposed in this dissertation to overcome these disadvantages. Based on adding the low pass filter to the results, the employment of time average technique may degrade the accuracy of the extended FDTD method, especiallyfor the components of which the period is shorter than twenty time steps. Therefore, the two novel algorithms which treat the late time instability with average techniques are proposed here to improve the accuracy. The numerical results have shown that scheme average technique may circumvent the late time instability while keeping the same order of accuracy as the original one. Then, a novel prism gridded FEM is derived in this dissertation. It has been shown that the requirement of the memory storage and computational time can be greatly reduced while dealing with the layered structures. The novel extended FDTD method which hybridized the novel prism gridded FEM with the conventional FDTD method is thus proposed here. It may be widely applied to the layered structures with arbitrarily curved boundary in transverse direction. Several planar circuits are simulated and compared with those of other methods. The numerical results demonstrate the accuracy and flexibility of the present method. In addition, the present method has shown to be as efficient as the conventional FDTD method by the analysis of computational complexity. Finally, a web-based visualization system which applied to the present numerical method is introduced. This system based on well-developed internet communication tools has shown to be capable of real time displaying the results calculated from the remote computer.
"RAY BASED FINITE DIFFERENCE METHOD FOR TIME DOMAIN ELECTROMAGNETICS." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606633/index.pdf.
Full textSu, Hurng-Weei, and 蘇宏偉. "Using Finite-Difference Time-Domain Method to Simulate Microwave Circuits." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/13565395000355209213.
Full text國立中山大學
電機工程學系研究所
89
FDTD is a numerical method that uses the second-order central-difference method to discrete the Maxwell’s equations in differential form, and positioning electromagnetic field in space grids and time grids. It is applied to analyze many electromagnetic problems in time domain. In this report the FDTD method is extended to include lumped-elements (as resistor, inductor, capacity),and nonlinear elements(as diode, transistor) to combine the circuit elements and electromagnetic fields, it’s so called LE-FDTD algorithm. The first, we will introduce the theory derivations and simulate some circuit structures in 2D, and then in order to simulate the real circuits, we will extend this algorithm in 3D to make full-wave analysis.
An-YuChen and 陳安裕. "Photon Wave Function propagation by Finite-Difference Time-Domain Method." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/79704674924921982686.
Full text國立成功大學
物理學系
104
SUMMARY In this work, we propose to use photon wave function to simulate the quantum optics phenomena of Hong-Ou-Mandel effect. Hong-Ou-Mandel effect is that when two identical photons entering a 50/50 beam splitter, only two photons will be detected in either side, and there is no probability of detecting one photon on each side. The photon wave equation is derived from Einstein energy momentum equation. The photon wave function is chosen to be E+icB such that the photon wave equation reduced to the Maxwell equations. We derive the proper basis for the photon mode in x-t real space and time from the quantum optics photon mode in k-ω space. To have proper probability definition, we need to define a dual mode to calculate the photon wave function probability which is regarded as the photon energy. By designing a 50/50 beam splitter from a dielectric slab, we found the refractive index of the medium is √2+1, and the thickness should be a multiple of quarter wavelength. For the classical field, this beam splitter will have same intensity coming out of two output side. By using the photon wave function and its proper dual mode probability definition, we simulate the Hong-Ou-Mandel like effect.