DocumentCode
1841772
Title
Active cancellation of switching noise for DC-DC converter-driven RF power amplifiers
Author
Kobayashi, H. ; Asbeck, P.M.
Author_Institution
Fuji Electr. Co. Ltd., Nagano, Japan
Volume
3
fYear
2002
fDate
2-7 June 2002
Firstpage
1647
Abstract
The use of DC-DC converters to dynamically vary the supply voltage for RF power amplifiers in accordance with the transmitted power is an increasingly popular technique that can significantly improve the efficiency. However the DC-DC converter ripple noise may degrade the power amplifier output signals. In this paper, we demonstrate an active cancellation technique that can dramatically reduce the noise. The technique can be easily integrated into present systems employing DSP and DC-DC converters.
Keywords
DC-DC power convertors; interference suppression; power amplifiers; radiofrequency amplifiers; DC-DC converter; DSP; RF power amplifier; active cancellation; ripple noise; switching noise; Active noise reduction; DC-DC power converters; Degradation; Digital signal processing; Noise cancellation; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Switching converters; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 2002 IEEE MTT-S International
Conference_Location
Seattle, WA, USA
ISSN
0149-645X
Print_ISBN
0-7803-7239-5
Type
conf
DOI
10.1109/MWSYM.2002.1012174
Filename
1012174
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