Title page for etd-1104113-144454


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URN etd-1104113-144454
Author Hsin-Hsiang Su
Author's Email Address No Public.
Statistics This thesis had been viewed 5570 times. Download 267 times.
Department Electrical Engineering
Year 2013
Semester 1
Degree Ph.D.
Type of Document
Language English
Title A Novel Approach for Modeling Diodes Without Reducing the Time Step in the FDTD Method
Date of Defense 2013-11-27
Page Count 103
Keyword
  • Lumped devices
  • Equivalent current source method
  • Multi-port circuits
  • Finite-difference time-domain
  • Signal integrity
  • Abstract In a high-speed digital system, issues of the signal integrity (SI) associated with the high-speed circuit and printed circuit boards (PCB) become more important as the operating frequency increases. To obtain accurate results of SI problems in the high-speed digital systems, circuit devices (active or passive) are simulated in a full-wave electromagnetic simulator to analyze the interaction between PCB and circuits. The finite-difference time-domain (FDTD) method is one of the most useful methods of full-wave electromagnetic simulation for analyzing passive and active circuits on a PCB.  This dissertation presents two efficient schemes for processing arbitrary lumped devices and a novel scheme for modeling diodes into FDTD method. For arbitrary linear two-terminal circuits, an efficient formulation that is based on control theory is presented. A novel FDTD approach that is based on Crank-Nicolson method is proposed to incorporate multi-port circuits into FDTD. The accuracy of the proposed approaches is confirmed by comparing results obtained using them with those of the equivalent current source method (ECSM) and Agilent’s commercial software, ADS. A novel FDTD approach that efficiently incorporates nonlinear devices such as diodes by solving a quadratic equation in each time step to update the electric field is developed. The novelty of this proposed method is that the quadratic equation always has real solutions. The stability of the proposed method is numerically demonstrated and the accuracy is verified by comparison with ECSM and ADS.
    Advisory Committee
  • Kin-Lu Wong - chair
  • Tzong-Lin Wu - co-chair
  • Ken-Huang Lin - co-chair
  • Yu-De Lin - co-chair
  • Tzyy-Sheng Horng - co-chair
  • Ruey-Bing Hwang - co-chair
  • Lih-Tyng Hwang - co-chair
  • Chih-Wen Kuo - advisor
  • Files
  • etd-1104113-144454.pdf
  • Indicate in-campus at 3 year and off-campus access at 3 year.
    Date of Submission 2013-12-04

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