Power control device

摘要

The invention relates to a power control device for a power output stage. A forward signal corresponding to a wave advancing on a wall feed line and a return signal corresponding to a wave returning on the wave feed line is obtained by means of a directional coupler and is supplied to a controller after narrow-band selection for controlling the output of the power output stage. Narrow-band selection is not carried out in the baseband but on an intermediate frequency level above the baseband.

主权项

1. Power-control device for a power-output unit, said power-control device comprising:
only one directional coupler for obtaining a forward signal corresponding to a forward wave on a wave supply line and a return signal corresponding to a return wave on the wave supply line; and a controller to which the forward and return signals are supplied after a narrow-band selection in order to control the power of the power-output unit, wherein a transmission device includes the power-control device, and wherein the narrow-band selection is implemented at a constant intermediate-frequency level above the maximum operating frequency of a baseband of the transmission device, and wherein the return signal is supplied to a return signal branch having both a broadband and a selective signal branch.