Metamaterial-enabled Reflectarray Antennas for High-power Microwave Applications

Metamaterial reflectarray antennas are attractive options for reducing system SWaP (size, weight, and power) compared to conventional reflector antennas. However, it has been a long-held belief that metamaterials are unsuitable for high-power microwave applications due to their strong field enhancement behaviors. Here we demonstrate that, fortunately, this challenge can be overcome by judiciously combining state-of-the-art optimization with intelligent material selection and metamaterial geometry.