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Filtering by: Creator Sinh, Le Xuan Remove constraint Creator: Sinh, Le Xuan Degree Field Electrical and Computer Engineering Remove constraint Degree Field: Electrical and Computer Engineering

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  • Decentralized control of a cable-stayed beam structure

    Creator:
    Volz, Patrick U.
    Resource Type:
    Masters Thesis
    Full Text:
    ,... mL4 are given by sin 11ix sinh fix sinh TiiL are arbitrary constants. get a comparable expression

  • Field theoretic analysis of a class of planar microwave and opto-electronic structures

    Creator:
    Hahm, Yeon-Chang
    Abstract:
    With increasing operating frequencies in CMOS RF/microwave integrated circuits, the performance of on-chip interconnects is becoming significantly affected by the lossy substrate. It is the purpose of the first part of this thesis to develop a rigorous field theoretic analysis approach for efficient characterization of single and multiple coupled interconnects...
    Resource Type:
    Dissertation

  • Analysis and modeling of electrically long MESFETS and coupled schottky lines

    Creator:
    Mohammed, Ahmed Sarhan
    Abstract:
    The properties of linear active coupled lines consisting of electrically long GaAs MESFET structures are investigated for possible applications as traveling-wave broad-band amplifiers. In addition, the nonlinear coupled Schottky lines are studied for applications as voltage tunable circuit elements. The analysis of the general active asymmetric coupled transmission lines in...
    Resource Type:
    Dissertation
    Full Text:
    ) and -lcx lcx -le le i2 = B1Rcie + B2Rcie + B3Rgie + B4R7ie (15-b) Where Bj is the amplitude

  • Design, fabrication, and testing of inhomogeneous dielectrics

    Creator:
    Lim, Sungkyoo
    Abstract:
    In this thesis the concept of inhomogeneous dielectrics is demonstrated for various optical coating applications. Compositionally-varying silicon oxynitride (SiON) dielectric layers, with the refractive index varying as a function of position, are grown by computer-controlled plasma-enhanced chemical vapor deposition (PECVD) using silane, nitrogen, and nitrous oxide reactant gases. Compositionally graded...
    Resource Type:
    Dissertation
    Full Text:
    )1 [Q11 Q12 E+ (zra+1 + 8)1 LE- (zi 8)] LQ21 Q22 where Qll = Q12 = Q21 = Q22 = M11 M21/no+i ns

  • The use of electromagnetic Walsh waves in radar

    Creator:
    Schaffer, Alvin
    Abstract:
    The question of the suitability of Walsh functions or similar bi-valued functions used as a radar electromagnetic carrier waveform is considered. Walsh functions are described and effective sinusoidal steady state transfer functions are defined for transmission elements, antenna systems, and propagation media. The argument is made that the unit impulse...
    Resource Type:
    Dissertation

  • Characterization of coupled microstrip structure using FDTD

    Creator:
    Kim, Yoonsuk
    Abstract:
    A new CAD-oriented methodology for the full-wave broadband characterization of coupled microstrip structures for RF/microwave and high-speed digital circuits is presented. The characterization methodology is based on the finite difference time domain (FDTD) technique combined with a systematic extraction procedure using the normal mode approach and multiport network concepts. The...
    Resource Type:
    Dissertation

  • Growth and characterization of zinc ferrite thin films for high frequency applications

    Creator:
    Hu, Jiqing
    Abstract:
    Ferrites have been used for various high frequency applications as bulk materials. These applications, however, are limited to large dimension devices. In this thesis, thin film ferrites were deposited from a low temperature solution-based deposition process that is suitable for micro-scale high frequency applications. The low temperature nature of this...
    Resource Type:
    Dissertation

  • Computational methods for the quasi-TEM characteristics of fundamental MIC planar structures

    Creator:
    Lee, Hyuckjae
    Abstract:
    Accurate and efficient computational methods to evaluate the quasi-TEM parameters of various planar structures such as microstrips, coplanar lines and coplanar waveguides are developed. The characteristic parameters of all these structures which are used extensively in microwave integrated circuits for applications as transmission lines and other circuit elements are computed...
    Resource Type:
    Dissertation

  • Analysis and modeling of planar microstrip spiral inductors on lossy substrates

    Creator:
    Lutz, Richard D.
    Abstract:
    The advent of low-cost RFIC's fabricated in Silicon-based technologies has led to the use of monolithic lumped elements which are located on-die. While it is clearly advantageous to have a high degree of integration and thus fewer off chip elements, parasitic losses due to semiconducting substrate effects can be a...
    Resource Type:
    Masters Thesis
    Full Text:
    lOpm2 using Greenhouse (dashed) and NBS-based (solid) methods 1500 1000 500 0 10' le 10' 102 le

  • Electromagnetic analysis of energy system devices

    Creator:
    Li, Yan
    Abstract:
    Many new applications of energy system devices have been developed to save energy, improve the controllability and stability of industrial processes, and reduce the weight, volume and cost of consumer devices. Due to the novelty of these devices, traditional empirical methods and lumped-parameter circuit theory methods are not sufficient for...
    Resource Type:
    Masters Thesis
    Full Text:
    in Fig.1.1. 7 Fi g. 1 .1 S um m ar y of e le ct ro m ag ne tic a