FIELD: mobile communication systems. SUBSTANCE: circuit determining power of received signal in mobile communication system has processor of first intermediate frequency that processes high-frequency signal sent over air path in zone of first intermediate frequency to generate signal of first intermediate frequency, processor of second intermediate frequency that processes signal of first intermediate frequency in zone of second intermediate frequency to generate signal of second intermediate frequency, first channel coupled to output of processor of second intermediate frequency to form channel for current corresponding to power of signal of second intermediate frequency and second channel to form channel for current. EFFECT: expanded dynamic range of additional current channel. 13 cl, 5 dwg
