Power control for a high frequency amplifier

摘要

The high-frequency amplifier gain regulating circuit (1) has a control knob (6) for adjusting the gain. This is connected to a regulator stage (5) which also has an input (Pj,Pr) from a measurement circuit (4). The output of the regulator stage passes to a transmitter stage (7) connected to the high-frequency amplifier (2), in turn connected to the measurement circuit which is connected to the load (3). The gain regulating circuit incorporates a regulator stage (8) connected to a direct current power source (9) connected to the transmitter stage.