A Comprehensive Analysis of AM-AM and AM-PM Conversion in an LDMOS RF Power Amplifier

A Comprehensive Analysis of AM-AM and AM-PM Conversion in an LDMOS RF Power Amplifier

In this paper, a Volterra analysis built on top of a normal harmonic balance simulation is used for a comprehensive analysis of the causes of AM-PM distortion in a LDMOS RF power amplifier (PA). The analysis shows that any nonlinear capacitors cause AM-PM. In addition, varying terminal impedances ma...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:IEEE transactions on microwave theory and techniques 2009-02, Vol.57 (2), p.262-270
Hauptverfasser: Aikio, J.P., Rahkonen, T.
Format: Artikel
Sprache:eng
Schlagworte:
AM-AM
AM-PM
Amplifiers
Analytical models
Applied sciences
Capacitors
Circuit properties
Circuits
distortion analysis
Electric, optical and optoelectronic circuits
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Harmonic analysis
Harmonic distortion
Impedance
polynomial device model
Power amplifiers
Power system harmonics
Radio frequency
Radiofrequency amplifiers
RF power amplifier (PA)
Volterra analysis
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In this paper, a Volterra analysis built on top of a normal harmonic balance simulation is used for a comprehensive analysis of the causes of AM-PM distortion in a LDMOS RF power amplifier (PA). The analysis shows that any nonlinear capacitors cause AM-PM. In addition, varying terminal impedances may pull the matching impedances and cause phase shift. The AM-PM is also affected by the distortion that is mixed down from the second harmonic. As a sample circuit, an internally matched 30-W LDMOS RF PA is used and the results are compared to measured AM-AM, AM-PM and large-signal S 11.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.2011161