RECEIVER CIRCUIT FOR MOBILE RADIO RECEIVERS WITH AUTOMATIC AMPLIFICATION CONTROL

摘要

The invention relates to a receiver circuit for a mobile radio receiver, comprising a programmable gain control (PGC) with variable amplification, an analogue to digital converter stage (3), a digital filter arrangement (KS1, KS2), for channel selection and a signal strength estimator (PE), arranged after the above in the signal path for determination of the signal strength in selected applied signals. Control of the amplifier (PGC) is carried out depending upon the applied channel signal strength as determined by the signal strength estimator (PE).