CIRCUIT ARRANGEMENT FOR CONNECTING THE ANTENNA TO THE RF INPUT CIRCUIT OF A CAR RADIO RECEIVER

摘要

1. Arrangement for coupling the antenna to the RF input circuit of a car radio receiver comprising a series tuned circuit which can be tuned by tuning diodes, characterised in that the RF input signal is supplied to an impedance converter stage (T1) which is used for coupling the signal to a series tuned circuit (L1 , D1 ) and that the RF signal coupled out of the impedance converter stage via a coupling capacitor (C3) is fed into the series tuned circuit (L1, D1) to a resistor (R4).