Patch antennas with new artificial magnetic layers

TL;DR

This paper introduces a novel use of artificial magnetic layers as high-impedance surfaces to reduce patch antenna size by approximately 40% without significantly affecting bandwidth.

Contribution

It demonstrates the application of new artificial magnetic layers as high-impedance surfaces to miniaturize patch antennas while maintaining their bandwidth.

Findings

Achieved about 40% size reduction of patch antennas.

Maintained bandwidth characteristics despite size reduction.

Validated through simulations and experimental measurements.

Abstract

A new type of high-impedance surfaces (HIS) has been introduced by C.R. Simovski et al. recently. In this paper, we propose to use such layers as artificial magnetic materials in the design of patch antennas. The new HIS is simulated and patch antennas partially filled by these composite layers are measured in order to test how much the antenna dimensions can be reduced. In order to experimentally investigate the frequency behavior of the material, different sizes of the patches are designed and tested with the same material layer. Also the height of the patch is changed in order to find the best possible position for minimizing the antenna size. This composite layer of an artificial magnetic material has made the antenna smaller while keeping the bandwidth characteristics of the antenna about the same. About 40% of size reduction has been achieved.