  The theoretical description and experimental verification of resonant
phenomena in electromagnetic fields generated in the near zone of
all-dielectric rectangular thin sub wavelength frames, subjected to an incident
microwave, is considered. The geometry of considered problems is presented by
means of arrangements of these frames in three orthogonal planes, normal
respectively to electric component, magnetic component and wave vector of the
incident wave. Such trio paves the way to design of 3D all-dielectric
multiresonant microwave unit cell. Displacement currents, generated by linearly
polarized electromagnetic waves in the system, lead to the formation of
magnetic and electric dipoles, each of which possess own resonant frequency.
Resonant inversion of magnetic inductance and electric displacement is
observed. The sliding incidence of plane wave on the frame is shown to provide
the sharp and deep resonance in the components of generated field. The phase
shift equal to $\pi$ between the magnetic components of incident and generated
wave indicates the formation of negative magnetic response. There observes the
angular anisotropy of arising dipoles, manifested in values of resonance
frequencies and in the dependence of depths of resonant spectral dips upon the
orientation of dipoles, with respect to the direction of propagation of
incident wave.
