Koninklijke Philips Corporation N.v.

Nxp B.v.

Jacobus Cornelis Sandee

Kaveh Kianush

Pieter Meijer

Gerrit Groot Hulze

A diversity FM radio receiver comprises two tuners for simultaneously tuning to the same FM channel. To avoid disturbances between the local oscillator signals of the tuners and to be able to use standard IF filters, one of the tuners operate with high-side LO injection and the other tuner operates with low-side LO-injection. To equalize the frequencies of the signals to be subjected to the diversity operation the two IF-signals of the tuners are fed to complex mixers with oppositely rotating phases.

FM radio receiver

An FM receiver includes control means for controlling the IF filter. The control means receive a first input signal in dependence of a received RF level signal and a second input signal in dependence of a demodulated signal and have an output coupled to the controllable IF filter.

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Eindhoven, Netherlands

Jacobus Cornelis Sandee