The present disclosure relates to a detector for radio frequency (RF) swing and direct current (DC) voltage that is connected to Vcc1. Output of the detector is connected to the bias circuit. A high RF swing and/or collector DC voltage reduces the bias of Q2. The combination of high input drive detection and/or high collector voltage detection creates an effective protection of the module at the absolute maximum ratings (AMR) conditions. The output of the detector is fed to the bias circuit in the feedforward scheme in which Q2 bias current is reduced at high voltage and high module drive. The disclosed device does not require additional circuits, that is, in the complementary metal oxide semiconductor.
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Qorvo US, INC., "AMR PROTECTION", Technical Disclosure Commons, (December 12, 2022)