  We develop a theoretical framework that lays out the fundamental rules under
which a periodic (Floquet) driving scheme can induce non-reciprocal transport.
Our approach utilizes an extended Hilbert space where a Floquet network with an
extra (frequency) dimension naturally arises. The properties of this network
(its on-site potential and the intersite couplings) are in one-to-one
correspondence with the initial driving scheme. Its proper design allows for a
control of the multipath scattering processes and the associated interferences.
We harness this degree of freedom to realize driving schemes with narrow or
broad-band non-reciprocal transport.
