Description
One the major limiting factors of the first modulated metasurface antenna design was the rather limited bandwidth. Yet the shortcoming was known to be linked to the design methodology rather than to modulated metasurface characteristics. This activity has been dedicated to the definition and implementation of a methodology enabling the design of circularly polarized wideband and dual band broadside apertures.
The methodology is based on a combination of dedicated tools allowing all steps from initial sizing to the detailed design of the physical layout of the modulated metasurface. It has been validated through full-wave analysis for a number of application cases, most notably a dual-band solution for medium and high gain TM/TC antennas at X-band.
The results achieved confirm the feasibility of both wideband and dual-band modulated metasurface antenna solutions.
