Measuring the out-of-band best linear approximation

A very easy and quick approach to gain insight into the linear as well as the nonlinear behavior of a device under test is the best linear approximation (BLA). The BLA is a linearized model of a nonlinear system and consists of a linearized transfer function combined with a noise source that describ...

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Bibliographic Details
Published in:Measurement science & technology 2010-01, Vol.21 (1), p.015102-015102 (6)
Main Authors: Van Moer, Wendy, Rolain, Yves
Format: Article
Language:English
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Summary:A very easy and quick approach to gain insight into the linear as well as the nonlinear behavior of a device under test is the best linear approximation (BLA). The BLA is a linearized model of a nonlinear system and consists of a linearized transfer function combined with a noise source that describes the stochastic nonlinear contributions. Recently, the theory of the BLA has been extended to the out-of-band BLA. This paper describes a measurement technique to determine the out-of-band BLA for microwave systems. The theory is proven on amplifier measurements.
ISSN:0957-0233
1361-6501
DOI:10.1088/0957-0233/21/1/015102