Compact frequency selective surface for polarisation transform

doi:10.1049/el.2013.3640

Compact frequency selective surface for polarisation transform

2014-01-01

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DOI：10.1049/el.2013.3640

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The polarisation transforming properties of a compact frequency selective surface (FSS) are reported. Although known designs made with meander lines employ several cascaded surfaces with many interconnects, the design methodology presented uses a single planar surface of very closely arrayed metallic meander lines impedance loaded with rectangular metal patches. A simulated axial ratio of ≤ −3 dB was obtained over a 40% bandwidth, from 2.10 to 3.2 GHz and optimised for 2.75 GHz. Simulation of normal and oblique incidence in both planes of polarisation shows a ±30° wide range of angles of incidence for polariser performance. A unit cell of the FSS circular polariser is λo/12 in size at the optimised operating frequency. The FSS circular polariser was manufactured and attached to a horn antenna aperture and measurement confirmed axial ratio performance.

Compact frequency selective surface for polarisation transform

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