Controlled amplifier for signal amplification in relation to analog control signal, has input for HF input signal coupled to control input of amplifier transistor

摘要

A controlled amplifier has an input for the supply of a HF input signal, and between the supply voltage terminal (6) and a reference voltage terminal(7) is connected a first current path (4) and at least one second current path (5) is connected parallel to the first current path (4). The input (1) for the HF input signal is coupled to a control input of the second amplifier transistor (10) and a control input (14) couples the input (3) for supplying the control signal (CTRL) to a control input of the first cascode transistor (9). An independent claim is included for a method for amplifying a signal in dependence on an input analog control signal.