Large- and small-signal IMD behavior of microwave power amplifiers

Large- and small-signal IMD behavior of microwave power amplifiers

In this paper, large-signal intermodulation distortion (IMD) sweet spots in microwave power amplifiers are studied and predicted using a new mathematical basis. The variations in the IMD versus drive pattern with active bias point and the terminating matching networks are investigated. This nonlinea...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1999-12, Vol.47 (12), p.2364-2374
Hauptverfasser: De Carvalho, N.B., Pedro, J.C.
Format: Artikel
Sprache:eng
Schlagworte:
Degradation
Distortion
Harmonic distortion
Intermodulation distortion
Mathematical models
MESFETs
Microwave amplifiers
Microwaves
Nonlinear distortion
Operational amplifiers
Pattern matching
Power amplifiers
Power generation
Spots
Stopping
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Beschreibung
Zusammenfassung:In this paper, large-signal intermodulation distortion (IMD) sweet spots in microwave power amplifiers are studied and predicted using a new mathematical basis. The variations in the IMD versus drive pattern with active bias point and the terminating matching networks are investigated. This nonlinear distortion model enabled the design of power amplifiers specially tailored to present a desired IMD versus drive-level pattern. For practical validation purposes, a MESFET case study and an illustrative application example are presented.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.808983