A new microstrip-fed printed slot antenna based on Moore space-filling geometry

Abstract

In this paper, a new design of miniature, multiband slot antenna is presented. The slot structure of the proposed antenna is based on the 3rd iteration of the Moore space-filling geometry, which is a closed variant of the conventional Hilbert space-filling curve. The slot structure is constructed on the ground plane side of a dielectric substrate. The slot antenna is fed by a 50 ¿ microstrip line, printed on the reverse side of the substrate. The proposed antenna possesses a miniature size with a slot side length of about half the guided wavelength. Furthermore, the antenna performance curves show that it offers a multiband behaviour with enhanced bandwidths, as compared with those offered by antenna structures based on other space-filling geometries. Expressions have been presented to correlate antenna slot parameters with the first resonant frequency, and among the subsequent resonant frequencies as well.