BROADBAND SLIDING-MODE OUTPHASING POWER AMPLIFIER WITH HIGH EFFICIENCY

Abstract: a dual-input microwave power amplifier (pa) with high-efficiency. the pa exploits the continuum of modes between the doherty and chireix pa mode of operation to achieve 40% fractional bandwidth while relying on the physical linear dispersion of the transmission lines of the lossless output combiner. a constant output is achieved at peak power over the entire bandwidth. the output backoff varies from 6 db in the doherty mode to 8 db in the chireix mode. the pa operates over a wider range of frequencies from 1 to 8 ghz. the dual-input pa operates in mixed-mode and thus requires variable input power drives and outphasing angle.

Inventor(s): Patrick Roblin, Dominic Mikrut

CPC Classification: H03F1/0288 (Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation)

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