Conformal electromagnetic skins (metasurfaces) for beamshaping applications

Highlights

• Arbitrarily Conformal Design: Novel design method for passive electromagnetic skins (“metasurfaces”) conformed to any arbitrarily shaped radome structure.
• Seamless Beam Control: Modifies an enclosed antenna array's radiation pattern (beamshaping) without altering the underlying antenna electronics.
• Enhanced Performance for Target Specifications: Control of antenna properties (beamwidths, directivity) while ensuring minimal degradation in impedance matching (return loss).
• Passive & Low-SWaPC (size, weight, power, and cost): Provides a lightweight, cost-effective, and energy-efficient solution for customizing antenna radiation patterns.
• Dynamic Control: Amenable to addition of tunable elements for dynamic beamshaping applications.
• Signature Management: Can be designed to engineer the radar reflection properties of surfaces, enabling robust, low-SWaPC RF signature management for air, land, or sea platforms.

Opportunity

Antenna systems in high-performance telecommunications, satellite communication, aerospace and defense sectors are increasingly required to deliver customized and directive beam patterns. Traditional methods, such as complex active arrays or physical redesign of the antenna and radome, are often costly, heavy, and difficult to integrate, especially under strict size, weight, power, and cost (SWaPC) constraints. This technology delivers a transformative, passive solution for precise beamshaping and signature management by integrating a custom-designed electromagnetic skin (“metasurface”) directly onto the interior or exterior of an existing radome structure or other structure elements of a given platform. It enables superior control over the electromagnetic transmission and/or reflection properties to achieve specific pattern transformations (e.g., changing beam width from 108° to 40°) without compromising the antenna's base performance. This opens doors for significant performance upgrades and asymmetric advantages in platforms where flexibility and integration simplicity are key.

Competitive advantage

• Minimal Impedance Mismatch: Specifically designed to minimize return loss, ensuring the core antenna array maintains high power efficiency across the operating frequency band.
• Geometry Agnostic: The design algorithm is robustly tailored for arbitrarily shaped radome structures, overcoming a fundamental limitation of traditional planar metasurfaces.
• Simplicity & Cost: Utilizes a single-layer passive metasurface, resulting in lower manufacturing cost and complexity compared to multi-layer or active electronic phase-shifting systems.
• Immediate Retrofit: Easily integrated into existing antenna systems and platforms to upgrade performance without requiring fundamental redesign of the core system components.

Status

• Provisional US patent application filed