Split ring loaded dielectric resonator antenna

Dielectric resonator antennas (DRAs) can be miniaturized by using high-permittivity (high-ε) and/or high-permeability (high-μ) materials. Given the same miniaturization ratio, the one with high-μ allows for a wider bandwidth. However, the loss of a natural high-μ material is unacceptably high at microwave frequencies. Alternatively, low-loss permeability can be artificially engineered for microwave applications. In this paper, the high-μ is obtained by embedding split ring resonators (SRRs) in a host dielectric. Parametric studies on DRAs with different sized SRRs are performed to provide an optimal antenna design guideline.