Balanced power amplifier with a bypass structure

A power amplifier arrangement comprises a first switch (18) which alternately switches an output signal (RF IN) between a bypass path (52) and an amplifier path that comprises a driver stage (22). The output of the driver stage (22) is connected to a first coupler (26) producing an-phase output sign...

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Bibliographic Details
Main Authors PERSICO, CHARLES J, KLAREN, JONATHAN, CHAN, PAUL L, WALTER, SCOTT
Format Patent
LanguageEnglish
French
German
Published 03.09.2008
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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Summary:A power amplifier arrangement comprises a first switch (18) which alternately switches an output signal (RF IN) between a bypass path (52) and an amplifier path that comprises a driver stage (22). The output of the driver stage (22) is connected to a first coupler (26) producing an-phase output signal and an out-of phase output signal. A fourth terminal of this coupler (26) is connected to a second switch (28) which alternately switches between the bypass path (52) and a termination impendence (32). The in-phase and out phase signals are amplified by first and second amplifiers (38,40), respectively. The amplified signals are coupled to the second coupler (42) providing a combined output signal (RF OUT).
Bibliography:Application Number: EP20080005432