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
Adaptive polynomial filters
TL;DR: The polynomial systems considered are those nonlinear systems whose output signals can be related to the input signals through a truncated Volterra series expansion or a recursive nonlinear difference equation.
Identification of Nonlinear Systems- A Survey
TL;DR: A survey of nonlinear system identification algorithms and related topics is presented by extracting significant results from the literature and presenting these in an organised and systematic way as discussed by the authors, where the limitations, relationships and applicability of the methods are discussed throughout.
Journal ArticleDOI
The output properties of Volterra systems (nonlinear systems with memory) driven by harmonic and Gaussian inputs
E. Bedrosian,S.O. Rice +1 more
TL;DR: Results, both old and new, which will aid the reader in applying Volterra-series-type analyses to systems driven by sine waves or Gaussian noise are presented.
Journal ArticleDOI
Identification of systems containing linear dynamic and static nonlinear elements
TL;DR: It is shown that systems composed of cascade, feedforward, feedback and multiplicative connections of linear dynamic and zero memory nonlinear elements can be identified in terms of the individual component subsystems from measurements of the system input and output only.
Journal ArticleDOI
Analysis of nonlinear systems with multiple inputs
TL;DR: Analytical modeling of communication receivers to account for their nonlinear response to multiple input signals is discussed, based on the application of the Wiener-Volterra analysis of nonlinear functionals.
References
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Journal ArticleDOI
Nonlinear distortion in feedback systems
TL;DR: In this article, a method for determining the distortion effect of nonlinearity in a feedback loop has been proposed, where the distortion is defined as the sum of the distortion of the nonlinearities in the feedback loop.
Journal ArticleDOI
Amplitude distortion in transistor feedback amplifiers
TL;DR: The analysis of distortion in a transistor amplifier is inherently more complex than in the vacuum-tube counterpart because of two factors: the transistor has an input conductance which is nonlinear and of appreciable magnitude in the normal operating frequency range of the device as mentioned in this paper.