12 November 1999 High-impedance electromagnetic surfaces with forbidden bands at radio and microwave frequencies
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A new type of metallic electromagnetic structure has been developed that is characterized by having high surface impedance. The geometry is analogous to a corrugated metal surface in which the corrugations have been folded up into lumped circuit elements, and distributed in a 2D lattice. Although it is made of continuous metal, and conducts DC currents, it does not conduct AC currents within a forbidden frequency band. Unlike normal conductors, this new surface does not support propagating surface waves. Furthermore, image currents induced in the surface are not phase reversed as they are on a flat metal surface.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Daniel F. Sievenpiper, Lixia Zhang, R. Broas, Eli Yablonovitch, "High-impedance electromagnetic surfaces with forbidden bands at radio and microwave frequencies", Proc. SPIE 3795, Terahertz and Gigahertz Photonics, (12 November 1999); doi: 10.1117/12.370159; https://doi.org/10.1117/12.370159


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