Selective dual-band subwavelength-hole-arrays-based polariser
M. Navarro-Ci´, M. Beruete, F. Falcone, I. Campillo, M. Sorolla Ayza
IET Microwaves, Antennas & Propagation
Volume: 4, Issue: 8, Aug. 2010
1092 - 1097
The design and measurement of a novel dual-band polariser for millimetre-waves based on cavity effects and extraordinary transmission resonance is presented in this paper. A further analysis of a linear extraordinary transmission polariser recently proposed and its stack suggests the feasibility of designing different polarisation responses by changing the orientation of the middle wafer in a 3-wafers-stack. The measurements have been recorded by an AB-MillimetreTM Quasi-optical Vector Network Analyzer under
Fresnel illumination and a vertical dual-band polariser is achieved by a configuration of three wafers in which the central one has been rotated 908. This result should find application in the design of new generation of polarising miniaturised devices, not only in the sub-terahertz range, but also in the optical regime.
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