Embedded-circuit magnetic metamaterial substrate performance for patch antennas

Magnetic permeability was imparted to a naturally non-magnetic material by metallic inclusions. A patch antenna tested the performance of the magnetic metamaterial as a substrate. The magnetic metamaterial exhibited enhanced μ and ε as predicted with acceptable loss-factor levels. Models for predicting μ and ε are presented and simulations indicate that permeability can be extended well beyond several GHz with current technology. Permeability in the μ_r=1-4 range is achievable for moderately low-loss applications. The representative antenna miniaturization factor=4-6.4 with efficiency=21-35%.