  We investigate the Fermi-Hubbard model with a Floquet-driven impurity in the
form of a local time-oscillating potential. For strong attractive interactions
a stable formation of pairs is observed. These pairs show a completely
different transmission behavior than the transmission that is observed for the
single unpaired particles. Whereas in the high frequency limit the single
particles show a maximum of the transition at low driving amplitudes, the pairs
display a pronounced maximum transmission when the amplitude of the driving
lies close to the ratio of the interaction U and the driving frequency
{\omega}. We use the distinct transmission behaviour to design filters for
pairs or single particles, respectively. For example one can totally block the
transmission of single particles through the driven impurity and allow only for
the transmission of pairs. We quantify the quality of the designed filters.
