Signal Buffer from DC to 1GHz with Low Jitter

Hi,

I need a Component.

I need some kind of Buffer which can drive Signals from DC to 1Ghz at really low jitter somehow around <50 fs and it has to be bidirectional

I first thought of a tristate - but low band
then unity gain - no bidirectional function

My next idea would be taking unity gain and bypassing with a semiconductor relay.


What do you think has anyone a better idea?
Thanks