Patent ID: 7352991

Claim:
A multiplexer for frequency multiplexing at least three satellite antenna output signals having selected overlapping frequency bands onto a cable, comprising: a plurality of mixers, said plurality being one less than the number of said satellite signals, each receiving one of said satellite antenna output signals; a plurality of local oscillators, each associated with one of said mixers, each of said local oscillators having a frequency higher than said satellite antenna output signal frequency bands which is selected to convert one of said satellite antenna signals to a selected component frequency band higher than said satellite antenna output signal frequency bands as a difference signal output of each of said mixers, said component frequency bands being selected to provide non-overlapping signals according to the frequency bands of each of said satellite antenna output signals; a plurality of filters, one coupled to receive the output of each of said mixers and each having a passband selected to correspond to one of said component frequency bands; and a combiner for combining one of said satellite antenna output signals with component frequency band signals output from said filters.