Patent ID: 7421040

Claim:
A modem tuner of one of zero intermediate frequency type and near-zero intermediate frequency type for receiving signals modulated with digital data, comprising: a first input for signals in a first frequency range f.sub. 1 to f.sub. 2 ; a second input for signals in a second frequency range f.sub. 3 and f.sub. 4 , where f.sub. 1 >f.sub. 2 >f.sub. 3 >f.sub. 4 -; a mixer selectively connectable to one of said first and second inputs; a multiplexer selectively connecting between one of said first and second inputs; first and second buffers connected between said first and second inputs and said multiplexer; a local oscillator having band switching for supplying to said mixer a local oscillator signal in any selected one of a plurality of local oscillator frequency ranges; and channel selective filtering located exclusively downstream of said mixer.