On the use of multitone techniques for assessing RF components' intermodulation distortion

A comprehensive analysis of various techniques currently used for assessing microwave components' nonlinear distortion behavior is presented in this paper. The output of a third-order system subject to a two- or three-tone input is given, and then used as the comparison reference for studying t...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 47; no. 12; pp. 2393 - 2402
Main Authors Pedro, J.C., De Carvalho, N.B.
Format Journal Article
LanguageEnglish
Published IEEE 01.12.1999
Subjects
Bandwidth
Channels
Distortion
Distortion measurement
Interference
Intermodulation
Intermodulation distortion
Microwave theory and techniques
Microwaves
Noise
Noise figure
Noise levels
Nonlinear distortion
Radio frequency
Signal to noise ratio
Testing
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ISSN0018-9480
DOI10.1109/22.808986

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Summary:A comprehensive analysis of various techniques currently used for assessing microwave components' nonlinear distortion behavior is presented in this paper. The output of a third-order system subject to a two- or three-tone input is given, and then used as the comparison reference for studying the response to a general multitone or random excitation. Theoretical results thus obtained allowed the generalization of standard two-tone intermodulation (IMD) figures of merit, to multitone IMD ratio, multitone or noise adjacent channel power ratio, and noise power ratio (NPR). This approach proved that normal NPR tests produce optimistic results that can be as large as 7 dB when evaluating in-band co-channel power interference.
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ISSN:0018-9480
DOI:10.1109/22.808986