Reduced lateral wave cylindrical dielectric resonator antenna

Abstract

A reduced-lateral-wave cylindrical dielectric resonator antenna (DRA) is presented, which produces very little lateral radiation at the horizon. The design technique centers on finding an optimal aspect ratio of height to radius for the DRA to minimize the lateral radiation. The lateral radiation of the DRA is reduced by operating in the higher-order TM 1 21 mode. The tradeoff is a reduced bandwidth, relative to the usual TM 11 0 mode. Numerical results are obtained from both HFSS and CST Microwave Studio simulations.

Cylindrical dielectric resonator antenna designs that have reduced lateral radiation

“…Through investigations, it was found that for aperture-coupled DRAs the higher-order TM 121 mode produces patterns that have very little lateral radiation [1]. On the other hand, the mechanism for the probe-fed and dual probe-fed reduced lateral radiation DRAs is a hybrid probe-DRA mode [2]. These new designs are call reduced lateral wave (RLW) DRAs.…”