Broadband driver for signals that are transmitted in different frequency
ranges, comprising:
(a) a first broadband driver circuit (19) for driving first signals
having signal frequencies that lie in a first frequency range;
(b) a second broadband driver circuit (24) for driving second signals
having signal frequencies that lie in a second frequency range;
(c) where at least one of the two broadband driver circuits (19)
has a frequency-dependent positive-feedback circuit (44) for impedance synthesis
of a frequency-dependent output impedance (Zout) of the broadband driver
circuit (19), and where the output impedance (Zout) has a different
value in the first frequency range than in the second frequency range.
