서지주요정보
비선형 소자로 종단된 전송선 과도응답의 시간영역에서의 해석 및 계산 = Time-domain analysis and calculation of transient response for transmission lines terminated with nonlinear loads
서명 / 저자 비선형 소자로 종단된 전송선 과도응답의 시간영역에서의 해석 및 계산 = Time-domain analysis and calculation of transient response for transmission lines terminated with nonlinear loads / 윤찬의.
발행사항 [대전 : 한국과학기술원, 1995].
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8005628

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학술문화관(문화관) 보존서고

DEE 95002

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For high speed digital integrated circuits, the interconnections of semi-conductor devices behave as transmission lines terminated with nonlinear loads. Nonlinearities become important when a device is changing its state or when it is excited by a large-amplitude signal. Signal delays and rising time along or at the terminals of these lines are investigated either by the direct time-domain approach or by the transform of the frequency domain data into the time-domain. Since the transmission lines are analyzed and measured in the frequency domain and the nonlinear load boundary conditions may be analyzed only in the time domain, one may take the frequency domain data of the transmission line with the source and transform it into the time domain response and solve the non-linear load boundary condition numerically in the time domain by using the Newton-Raphson method. It is known that the forward and backward propagating waves represent the total voltage and current along the lossless transmission line in the time domain. If we defines the reflection coefficients at the source and load boundaries in the time domain, one may use the forward and backward wave representations in the transmissions line. A successive time stepping method may be utilized to linearize the given non-linear load voltage-current relation in the incremental time stepping period. For a nonlinear load having linearized conductance and capacitance in the incremental time interval, one may approximate the time derivative by the finite difference in the incremental time interval δt which gives the equivalent resistance of the capacitance, δt/$C_q$, where $C_q$ is the linearized capacitance at this time interval. One may extend this method to the lossy, non-uniform and time-dependent lines terminated with an arbitrary non-linear load. Finite difference method is applied to the non-uniform transmission lines in the spatial domain, one may obtain the similar representation in the time domain. For a lossy and non-uniform transmission line, additional terms due to the continuous reflections along the transmission line appear. Numerical calculations show that this direct time domain calculation is efficient in the computation time since it does not use the inverse Fourier or (Laplace) transformation and convolution integral for the frequency domain data of the transmission line. This method does not use the Newton-Raphson algorithm to deal with the non-linearity of the load, it gives the convergent results even when the voltage-current characteristics of the non-linear load are not monotonically increasing or multivalued, where the Newton-Raphson method may give more than one solution. The convergence of this method requires the incremental time period δ to be sufficiently small compared with the rising and falling time of the source, the time variation of the non-linear voltage-current characteristics, and L/R and C/G for the lossy transmission line, where L, R, C, G are respectively, inductance, resistance, capacitance, and conductance of the transmission line per unit length.

서지기타정보

서지기타정보
청구기호 {DEE 95002
형태사항 1책(면수복잡) : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Chan-Eui Yun
지도교수의 한글표기 : 라정웅
지도교수의 영문표기 : Jung-Woong Ra
학위논문 학위논문(박사) - 한국과학기술원 : 전기및전자공학과,
서지주기 참고문헌 수록
주제 Electric lines.
Nonlinear boundary value problems.
Time-domain analysis.
전송 선로. --과학기술용어시소러스
과도 해석. --과학기술용어시소러스
비선형 문제. --과학기술용어시소러스
시간 영역 분광법. --과학기술용어시소러스
Newton-Raphson법. --과학기술용어시소러스
Transients (Dynamics)
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