DocumentCode
751332
Title
Third-order intermodulation reduction by harmonic injection in a TWT amplifier
Author
Wirth, Michael ; Singh, Aarti ; Scharer, John ; Booske, John
Author_Institution
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Volume
49
Issue
6
fYear
2002
fDate
6/1/2002 12:00:00 AM
Firstpage
1082
Lastpage
1084
Abstract
A method for reducing the two-tone third-order intermodulation products arising from two carrier frequencies at 1.95 and 2.00 GHz is demonstrated in a traveling wave tube-distributed amplifier. The optimum amplitude and phase of an injected second harmonic and the resulting intermodulation suppression of up to 24.2 dB are examined for fundamental drive levels approaching saturation
Keywords
UHF amplifiers; distributed amplifiers; harmonic generation; interference suppression; intermodulation distortion; travelling wave amplifiers; 1.95 GHz; 2.00 GHz; TWT amplifier; TWT-distributed amplifier; harmonic injection; helical TWT; matched terminations; optimum amplitude; optimum phase; third-order intermodulation reduction; two-tone intermodulation products; Capacitance; DH-HEMTs; Etching; Frequency; Gallium arsenide; Heterojunction bipolar transistors; Indium gallium arsenide; Indium phosphide; Notice of Violation; Silicon compounds;
fLanguage
English
Journal_Title
Electron Devices, IEEE Transactions on
Publisher
ieee
ISSN
0018-9383
Type
jour
DOI
10.1109/TED.2002.1003754
Filename
1003754
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