Conformai low-profile metaline

Abstract

This paper presents a circularly-polarized (CP) low-profile metaline that is conformal to a conducting hollowed-out octagonal prism. Effects on the radiation characteristics of varying the octagonal prism side length, S, are investigated with the longitudinal length, L, kept constant. As S is increased, the half-power beam width decreases and the gain increases. A ten-cell CP metamaterial line shows a gain of 4.7 dBi when S is one quarter wavelength and L is 1.2 wavelengths.