An Improved Multifunctional Frequency Selective Surface based on Microfluidic Technology

摘要

A multifunctional reconfigurable frequency selective surface has been presented based on microfluidic technology. The proposed design comprises periodic arrays of microchannels engraved in the opposite sides of an elastomeric substrate. With the selective injection of a liquid metal alloy inside the fluidic channels, the structure exhibits multifunctional characteristics (all pass, low pass, and bandpass responses with polarization-selectivity). The geometry has the novelty of having independent control in reconfigurability among the multiple number of working states. The proposed design has also been fabricated using laser etching technique, and the prototype shows measured results in close resemblance with the simulated responses.