Circular polarizer by multi-form helices

Polarization and electromagnetic properties in artificial multi-form helix structures are investigated. Four different forms of the helix core, i.e. circular, triangular, square, and hexagonal shape are studied. Based on their orientations, total inductance and capacitance are varied resulting in the shift of their resonance frequency. It is found that multi-form helices with different numbers of helical backbones can generate a unique beam splitting behavior. These split left and right circular polarized waves provide opposite refractive index broad bandwidth, where one of the two circularly polarized waves is normally filtered out.