FM Receiver, especially for RDS

摘要

The frequency modulation receiver (29) has an antenna (2) passing signals (S1) to a first high frequency stage (3), and passing an amplified signal (S2) to a mixer (30) with a drive signal (S3) down converting to IF (S6). A demodulator (8) produces the audio output (S7). The drive signal is stabilised by a frequency locking loop (32), comparing the output signal and the IF output.