  We explore the electrodynamic coupling between a plane wave and an infinite
two-dimensional periodic lattice of magneto-electric point scatterers, deriving
a semi-analytical theory with consistent treatment of radiation damping,
retardation, and energy conservation. We apply the theory to arrays of split
ring resonators and provide a quantitive comparison of measured and calculated
transmission spectra at normal incidence as a function of lattice density,
showing excellent agreement. We further show angle-dependent transmission
calculations for circularly polarized light and compare with the
angle-dependent response of a single split ring resonator, revealing the
importance of cross coupling between electric dipoles and magnetic dipoles for
quantifying the pseudochiral response under oblique incidence of split ring
lattices.
