Two-Signal Method of Measuring the Large-Signal S-Parameters of Transistors

Mazumder, S.R.; Puije, Patrick D. van der

doi:10.1109/tmtt.1978.1129404

Cited by 41 publications

(7 citation statements)

References 7 publications

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“…This saturable nonlinearity prohibits the emitted solitary waves from growing indefinitely. The waveguide parameters adopted are for typical materials of those employed experimentally [2] to verify the existence of nonlinear guided waves. For example, d = 2.5 pm, n,, = n,b = 1.55, n, = 1.57. a, = 2 x lo-' m'/W.…”

Section: Computational Schemesmentioning

confidence: 99%

Excitation of three‐dimensional solitary waves from a nonlinear slab waveguide

Liu

Wang

1992

Micro & Optical Tech Letters

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Solitary‐wave excitation in a slab waveguide bounded by two different non‐Kerr‐like media exhibiting saturable self‐focusing nonlinearity is investigated. From numerical calculation it is found that solitary waves are emitted from the nonlinear interfaces. Moreover, mutual interaction between them is observed if the excitation is larger. The simulated results are useful for the study of three‐dimensional solitary waves. © 1992 John Wiley & Sons, Inc.

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Section: Computational Schemesmentioning

confidence: 99%

Excitation of three‐dimensional solitary waves from a nonlinear slab waveguide

Liu

Wang

1992

Micro & Optical Tech Letters

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“…If the measured values are not on a circle or its center is shifted, then the circuit is nonlinear. This idea is known from the literature, with other definition of largesignal parameters (Mazumder and van der Puije, 1978).…”

Section: Introduction: Large-signal S-parameters Describing Functions X-parametersmentioning

confidence: 99%

Stability investigations based on two-port describing functions

Ladvánszky

2019

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Purpose Stability of a nonlinear, tuned amplifier has been investigated based on the describing function method. On stability, this paper means global asymptotic stability. The tuned amplifier comprises a saturated amplifying device with feedback and two resonators, at the input and the output. Describing function method here means introduction of the two-port describing functions. Design/methodology/approach Describing function method is applied, extended for two ports. Results from complex analysis and matrix algebra are heavily used. The two resonators have identical resonant frequency and bandwidth. Instability is represented by non-vanishing output perturbation for zero-input perturbation. Applying a simple transistor model with saturation and feedback, stability is analyzed in the form of output voltage as a function of input voltage. Findings Two-port scattering and admittance describing functions have been introduced. At a certain input voltage amplitude, instability appears in the form of unwanted sidebands, then at a higher input voltage, instability disappears, in good agreement with experiments. The hand calculated stability limits are in good agreement with the computer analysis. Originality/value The paper is based on an early publication of the author (Baranyi and Ladvánszky, 1984). Here, the full material is presented, explained step by step, extended and revised. All neglections that were earlier made in the author’s paper have been avoided here. This paper has significant tutorial value as well.

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“…In the past, there has been a variety of large signal characterizations of the nonlinear two-port device. Many attempts have been made to characterize the device by resorting to the large signal scattering parameter measurement [Mazumder, 1978]. Large signal -small signal conversion matrices [Maas, 1988] and Volterra Series [Maas, 1988] [Chua, 1972] [Hu, 1989] are also used to characterize the nonlinear behavior of the device.…”

Section: Large Signal Characterizationmentioning

confidence: 99%

Nonlinear device characterization using harmonic load pull measurement

Aimdilokwong

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Two-Signal Method of Measuring the Large-Signal S-Parameters of Transistors

Cited by 41 publications

References 7 publications

Excitation of three‐dimensional solitary waves from a nonlinear slab waveguide

Excitation of three‐dimensional solitary waves from a nonlinear slab waveguide

Stability investigations based on two-port describing functions

Nonlinear device characterization using harmonic load pull measurement

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