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Tracking power converter for supply modulation of RF power amplifiers

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5 Author(s)
Midya, P. ; IC Design Technol., Motorola Labs., Schaumburg, IL, USA ; Haddad, K. ; Connell, L. ; Bergstedt, S.
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This paper describes a tracking power converter and the controller IC for its implementation. The tracking power converter is used for supply modulation of a linear RF power amplifier. Supply modulation improves RF power amplifier efficiency for variable envelope RF signals. This system maximizes tracking bandwidth (~160 kHz), ripple suppression (~70 dB) and power conversion efficiency (~92%) with a relatively low switching frequency (800 kHz)

Published in:

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual  (Volume:3 )

Date of Conference:

2001