Patent ID: 8417201
Filing Date: 2013-04-09
Classification: H04B

Abstract:
1. Multi-mode radio frequency (RF) power amplifier (PA) circuitry comprising: a common RF input adapted to receive a common RF input signal; a first PA path comprising a first plurality of PA stages coupled in series, such that during a first operating mode, a first input stage of the first plurality of PA stages is adapted to receive a first RF input signal and a first final stage of the first plurality of PA stages is adapted to provide a first RF output signal and the first PA path adapted to: a second PA path comprising a second plurality of PA stages coupled in series, such that during the second operating mode, a second input stage of the second plurality of PA stages is adapted to receive a second RF input signal and a second final stage of the second plurality of PA stages is adapted to provide a second RF output signal and the second PA path adapted to: control circuitry adapted to select between the first operating mode and the second operating mode; and wherein each of the first plurality of PA stages is adapted to receive the corresponding PA enable signal, such that during the first operating mode, each of the first plurality of PA stages is enabled and during the second operating mode, each of the first plurality of PA stages is disabled; and each of the second plurality of PA stages is adapted to receive the corresponding PA enable signal, such that during the first operating mode, each of the second plurality of PA stages is disabled and during the second operating mode, each of the second plurality of PA stages is enabled.