Power amplifier apparatus

Abstract

The disclosure relates to a power amplifier apparatus. A power amplifier apparatus includes a power amplifier circuit configured to receive an RF input signal at an RF input and to generate an RF output signal at an RF output; an adaptive bias circuit comprising a biasing transistor, the biasing transistor having a common terminal coupled to the RF input and to a tail current source, and the biasing transistor further having an input terminal coupled to a DC bias voltage source; and a rectification booster comprising a current mirror device, wherein a first side of the current mirror device is coupled to an output terminal of the biasing transistor and wherein a second side of the current mirror device is coupled to the RF input.

Dependencies are inferred from the claim text.