METHOD AND DEVICE FOR COMPENSATING AMPLIFICATION VARIATIONS IN AN AMPLIFIER CIRCUIT

摘要

The invention relates to a method for compensating amplification variations in an amplifier circuit comprising high-frequency components and attenuators, a high-frequency component being controlled with a first temperature-dependent control voltage UHF(T) and an attenuator being controlled with a second temperature-dependent control voltage UVG(T). The first temperature-dependent control voltage UHF(T) is generated by impressing a temperature dependency on a control voltage Uopt which is individual of a high frequency component and which is predetermined at a predetermined temperature, to adjust the optimum operating point of the high frequency component, and the second temperature-dependent control voltage UVG(T) is generated by impressing a temperature dependency on a predetermined control voltage UVG_T for the attenuator, the control voltage UVG_T being determined by adjusting the control voltage UVG_T in an iterative method in such a manner that the output power of the amplifier circuit reaches a level at a constant input power, which level can be predetermined. The invention further relates to a device comprising memory units for permanently storing values for generating control voltages for the high frequency components and attenuators and electrical circuits having an input and an output for generating a temperature-dependent output voltage while taking into consideration a temperature-dependent input voltage UIST(T) applied to the electrical circuits and a value stored in the memory units, the stored value corresponding to an individual control voltage Uopt for adjusting the optimum operating point of the high frequency components.