The use of reflection and transmission models to design wideband and dual-band Fabry-Perot cavity antennas (invited paper)

This paper explores how wideband and multi-band performance can be achieved in Fabry-Perot resonant cavity antennas using two design methodologies, one based on a Reflection Model of a unit cell and the other based on a Transmission Model of a unit cell. In particular, two wideband antenna designs and two dual-band designs are considered. They include low-profile planar metallo-dielectric antennas based on one printed dielectric slab and very simple antennas based on two unprinted all-dielectric slabs. Desired wideband or multi-band performance is achieved either by engineering the reflection phase and magnitude of the superstrate using the Reflection Model or by extending the defect-mode bandwidth using the Transmission Model. Key theoretical and experimental results are presented to highlight the advantages of selected antenna designs.