Title :
Wide/Multiband Linearization of TWTAs Using Predistortion
Author :
Katz, Allen ; Gray, Robert ; Dorval, Roger
Author_Institution :
Linearizer Technol., Inc., Hamilton, NJ
fDate :
5/1/2009 12:00:00 AM
Abstract :
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.
Keywords :
linearisation techniques; travelling wave amplifiers; travelling wave tubes; wideband amplifiers; TWTA; harmonic effects; multiband linearization; multioctave bandwidth linearization; predistortion; traveling-wave tube amplifiers; wideband linearization; Bandwidth; Broadband amplifiers; Character generation; Digital signal processing; Frequency; High power amplifiers; Power amplifiers; Power generation; Predistortion; Wideband; Distortion correction; TWTA; high-power amplifier (HPA); linearizer; predistortion (PD); wideband;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2009.2015412
