Dual-band directional/omni-directional liquid dielectric resonator antenna designs using characteristic modes

Compact and low-cost dielectric resonator antennas (DRAs) at low frequency are preferred in many applications. In this work, we propose to design compact dual-band directional/omni-directional DRAs by properly exciting the characteristic modes (CMs) of a water filled glass bottle. Because the water has a very high permittivity of εr = 81, the resulted DRA… CONTINUE READING