A power amplifier system (1) comprises a control circuit; a power amplifier (3) and a delay device (8). The control circuit comprises a detector (4) for detecting an instantaneous power level of an input signal; a threshold comparator (5); and a power supply voltage source (6). The threshold comparator...http://www.google.de/patents/US20050242880?utm_source=gb-gplus-sharePatent US20050242880 - Power amplifier system
