Journal ArticleDOI
Application of Volterra series to intermodulation distortion analysis of transistor feedback amplifiers
TLDR
In this paper, the authors analyzed the intermodulation distortion of a solid-state feedback amplifier and showed that the feedback is fully effective in reducing the open-loop second-order distortion.Abstract:
This paper analyzes the intermodulation distortion of a solid-state feedback amplifier. Each transistor of the amplifier has been represented by a frequency-dependent model incorporating four nonlinearities. The Volterra series is used as the analysis tool. The primary motivation for this study is that intermodulation distortion is a critical problem in high-frequency long-haul solidstate systems. A computer program that calculates the amplifier intermodulation distortion has been developed. This program can be used to select the optimum bias point of each stage, optimum interstage and feedback networks, and optimum load and source impedances. Good correlation between calculated and measured results was obtained. The closed-form expressions derived show that the feedback is fully effective in reducing the open-loop second-order distortion and that the feedback may not significantly reduce the open-loop third-order distortion, if the "second-order interaction" phenomenon is dominant. The second-order interaction is explained in detail in this paper.read more
Citations
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Journal ArticleDOI
Identification of weakly nonlinear systems using input and output measurements
TL;DR: In this article, a pencil-of-functions system identification technique for weakly nonlinear systems is presented. But the identification technique is a black-box procedure in that only measurements at the system input and output terminals are required.
Journal ArticleDOI
Linearity Enhancement Techniques in Radio Receiver Front-Ends
TL;DR: An overview of circuit and architectural techniques for enhancing receiver front-end linearity is presented, and two types of techniques are described, those that rely on device or circuit level linearization, through reduction of nonlinear coefficients, and those that reliance on attenuation of undesirable interferers.
Journal ArticleDOI
L5 system: Role of computing and precision measurements
TL;DR: A powerful group of tools that are independently important, but whose combined use helped make possible the timely completion of the L5 system design are “proved in,” and will profoundly influence the next system design philosophy.
Journal ArticleDOI
Nonlinear distortion analysis of p-i-n diode attenuators using Volterra series representations
TL;DR: In this article, an application of the Volterra series to the analysis of a network with nonlinear elements represented by VOLTERRA series is presented, and the results of the analysis are used to derive the cross-modulation coefficient for a \pi -type attenuator with three p-in diodes.
Journal ArticleDOI
Distortion Modeling of Feedback Two-Stage Amplifier Compensated With Miller Capacitor and Nulling Resistor
Yingwu Miao,Yuxing Zhang +1 more
TL;DR: Inspired by traditional Rosenstark method, a nonlinear signal-flow-based method has been developed and based on the proposed method, the nonlinear coefficients of each gain stage can be evaluated exactly and the rules of cascading, feedback can be found conveniently.
References
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Continuous nonlinear systems
TL;DR: In this paper, a thesis submitted to M.I.T. Dept. of Electrical Engineering, July 24, 1959, is described, based on which the following paper is presented:
Journal ArticleDOI
Transistor distortion analysis using volterra series representation
TL;DR: In this article, the second and third harmonic distortion for a given set of input frequencies and transistor parameters is computed using the Volterra series representation, where the nonlinear nodal equations are solved by expressing nodal voltages in terms of the VOLTERRA series expansion of the input voltage.
Journal ArticleDOI
The Use of Functionals in the Analysis of Non-linear Physical Systems†
TL;DR: In this paper, the authors present a systematic development of this idea and present analogous expansions in a series of terms orthogonal with respect to input statistics, which is applicable equally to linear or non-linear systems.
ReportDOI
Theory of the analysis of nonlinear systems
TL;DR: This thesis is based on a thesis submitted to M.I.T. Dept. of Electrical Engineering, January 13, 1958 and aims to provide a history of electrical engineering in the United States.
Journal ArticleDOI
Functional Analysis Applied to Nonlinear Feedback Systems
TL;DR: An operator theory is outlined for the general, nonlinear, feedback loop and it is shown that feedback reduces distortion for band-limited inputs and an iteration whose rate of convergence is optimized is derived.