Ka. Mcintosh et al., 3-DIMENSIONAL METALLODIELECTRIC PHOTONIC CRYSTALS INCORPORATING FLAT METAL ELEMENTS, Microwave and optical technology letters, 17(3), 1998, pp. 153-156
A three-dimensional metallodielectric photonic crystal (MDPC) that uti
lizes planar metal scattering elements in a dielectric medium has been
studied at microwave frequencies. The metal elements are flat copper
circles defined on thin dielectric sheets using standard printed-circu
it techniques. Thicker polyethelene sheets are alternately stacked wit
h the thin metallized sheets to form a (111)-oriented face-centered-cu
bic lattice. A photonic stopband has been measured from this ''flat-at
om'' MDPC at 8.4 GHz with a rejection level of 18 dB per lattice perio
d and a width of 50% of the center frequency. The photonic stopband pe
rsists over a broad range of angles. Flat-atom MDPC results are compar
ed with measurements made on ''spherical-atom'' MDPC structures. Varia
tion of the stopband characteristics with thickness of the the dielect
ric layers has been explored. (C) 1998 John Wiley & Sons, Inc.