Electromagnetic band-gap structures (EBG)
with Kronig-Penney morphology implemented inside
rectangular waveguides are theoretically and
experimentally examined using a unit cell with three
dielectrics. Filtering properties of these structures are
analysed, invoking the Floquet theorem for ideal
structures (infinite in the propagation direction), and by
means of the scattering matrix technique for real
structures (i.e., of finite length). Measurements of the
transmission coefficient for the fundamental mode in the
Ku-band are presented