Patent ID: 6233440
Filing Date: 2001-05-15
Classification: H03F

Abstract:
An amplifier comprising:a peak detector operable to detect a peak level of an amplifier input signal, and operable to generate an output signal in response to the peak level of the amplifier input signal;a bias voltage level setting circuit coupled to the peak detector, the bias voltage level setting circuit being operable to receive the output signal from the peak detector, and operable to generate a bias voltage in response to the output signal from the peak detector; andan amplifier circuit coupled to the bias voltage level setting circuit, the amplifier circuit being operable to receive the bias voltage from the bias voltage level setting circuit, and operable to receive the amplifier input signal, and operable to generate an output signal in response to the bias voltage and the amplifier input signal;wherein the peak detector comprises a negative peak detector operable to detect a negative peak level of the amplifier input signal.