Nonlinear switching of microwave pulses in layered media with paraelectric

Interaction of microwave electromagnetic (EM) waves with a layered structure that includes a paraelectric is investigated theoretically. An oblique incidence of EM wave is considered, when the total internal reflection and resonant transmission at several frequencies occur. In is demonstrated that this structure modulates effectively EM wave. The modulation mechanism is a change of dielectric permittivity of a paraelectric layer in a moderate bias electric field. An interaction of strong incident EM pulses with this structure is also considered in the case of absence of a bias electric field. The nonlinear switching of short pulses takes place there, when both the maximum amplitude and the shape of a pulse change essentially under a small change of the amplitude of the incident pulse.