Wide/Multiband Linearization of TWTAs Using Predistortion

Wide/Multiband Linearization of TWTAs Using Predistortion

This paper discusses the state of the art in achieving wideband (>1 GHz) linearization of TWTAs. Multioctave bandwidth linearization has been achieved at frequencies from L- to Ka-band. The trades between using a single predistortion linearizer and multiband linearizers are discussed. The effect...

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Veröffentlicht in:IEEE transactions on electron devices 2009-05, Vol.56 (5), p.959-964
Hauptverfasser: Katz, A., Gray, R., Dorval, R.
Format: Artikel
Sprache:eng
Schlagworte:
Bandwidth
Data mining
Devices
Distortion correction
Gain
Harmonic analysis
Harmonics
high-power amplifier (HPA)
Linearization
linearizer
Octaves
Predistortion
predistortion (PD)
State of the art
Strontium
TWTA
Wideband
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Beschreibung
Zusammenfassung:This paper discusses the state of the art in achieving wideband (>1 GHz) linearization of TWTAs. Multioctave bandwidth linearization has been achieved at frequencies from L- to Ka-band. The trades between using a single predistortion linearizer and multiband linearizers are discussed. The effect of harmonics (both even and odd-order-distortion products) and their correction for applications that cover more than an octave are considered.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2009.2015412