Search for dissertations about: "finite-difference time-domain method"

Showing result 21 - 25 of 48 swedish dissertations containing the words finite-difference time-domain method.

  2. 21. Design, fabrication and characterization of plasmonic components based on silicon nanowire platform

    Author : Fei Lou; Lech Wosinski; Lars Thylén; Sebastian Lourdudoss; Anatoly Zayats; KTH; []
    Keywords : Planar integrated circuit; silicon photonics; plasmonics; subwavelength; directional coupler; polarization beam splitter; disk resonator; ring resonator; finite-difference time-domain; photonic crystal; electro-optic polymer; Purcell factor.;

    Abstract : Optical interconnects based on CMOS compatible photonic integrated circuits are regarded as a promising technique to tackle the issues traditional electronics faces, such as limited bandwidth, latency, vast energy consumption and so on. In recent years, plasmonic integrated components have gained great attentions due to the properties of nano-scale confinement, which may potentially bridge the size mismatch between photonic and electronic circuits. READ MORE

  4. 22. Design of hat fed reflector antennas using FDTD

    Author : Jian Yang; Per-Simon Kildal; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; soft and hard surfaces; finite difference time domain FDTD method; sperture efficiencies; Gaussian vertex plate; corrugations; edge corrugations; hat feed antenna; phase center; vertex plate; ring-focus paraboloid; paraboloid; V2D code; ring-shaped phase center; BOR1 antenna; reflector shaping; reflector antenna;

    Abstract : .... READ MORE

  5. 23. A method for including the responses of lumped devices into multi-conductor transmission line model for electrified railways

    Author : Ziya Mazloom; Uppsala universitet; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : The electrified railway system consisting of overhead lines for traction power supply, auxiliary power, return conductors for traction current and the tracks can be modeled as a system of multiconductor transmission lines (MTL) above a finitely conducting ground. There are several lumped devices connected in series or in parallel along this MTL and the response of the MTL to electromagnetic transients need to be solved along with the device response. READ MORE

  6. 24. Multi-conductor transmission line model for electrified railways: A method for including responses of lumped devices

    Author : Ziya Mazloom; Rajeev Thottappillil; Farhad Rachidi; KTH; []
    Keywords : ;

    Abstract : For studying the response to transients caused by lightning and other electromagnetic disturbance sources, electrified railway systems can be represented as a system of multiconductor transmission lines (MTL) above a finitely conducting ground. The conductors present in this system would be wires for traction power supply, auxiliary power, return conductors for traction current, the tracks, and finitely conducting ground. READ MORE

  7. 25. Mathematical Tools Applied in Computational Electromagnetics for a Biomedical Application and Antenna Analysis

    Author : Farid Monsefi; Sergei Silvestrov; Magnus Otterskog; Linus Carlsson; Jean-Pierre Bérenger; Mälardalens högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mathematics Applied Mathematics; matematik tillämpad matematik;

    Abstract : To ensure a high level of safety and reliability of electronic/electric systems EMC (electromagnetic compatibility) tests together with computational techniques are used. In this thesis, mathematical modeling and computational electromagnetics are applied to mainly two case studies. READ MORE