Design of an MOM diode‐coupled frequency‐selective surface

This article presents the design of a slot‐antenna‐based frequency selective surface coupled with metal‐oxide‐metal diodes integrated into the structure. This design takes advantage of a single self‐aligned patterning step using shadow evaporation. The structure is optimized at 10.6 μm to have less than 2% reflection with 70% of the incident energy dissipated into the oxide layer. Initial experimental results conducted with e‐beam lithography are presented. The fabricated structure is shown to produce a polarization sensitive unbiased DC current. This design will be useful for both infrared sensing and imaging as well as direct conversion of thermal energy.