Patent ID: 6242976
Filing Date: 2001-06-05
Classification: H03F

Abstract:
A linearized channel amplifier for use in driving a high power amplifier, comprising:a channel amplifier comprising a first commandable gain block, a bandpass filter, a second commandable gain block having a detector/coupler for outputting automatic gain level control to an automatic gain level control loop, and a detector/coupler that provides for output level telemetry;a linearizer coupled to the channel amplifier comprising a linearizer bridge coupled to a third commandable gain block; anda control circuit coupled to the channel amplifier and the linearizer that provides regulated voltages thereto and provides temperature compensated currents to control attenuators in the channel amplifier and an output attenuator of the linearizer, and control currents for a phase shifter, a distortion generator and a bridge circuit attenuator, which control circuit comprises a gain control circuit and power control circuit that is coupled to the first and second commandable gain blocks.