High-Performance Materials for Radomes and Antennas

Ideal radome materials are both extremely pure and low dielectric, meaning they truly are transparent to electric signals. Toray Advanced Composites is the world's leading provider of high-purity, low-dielectric structural radome materials. From environmentally demanding military applications to high-volume commercial aerospace satellite communications, Toray's materials deliver.

We achieve superior quality through our precise manufacturing process. Toray's radome materials are produced in facilities free of carbon fiber and conductive material contaminants, ensuring the lowest risk, highest performing electrically pure products for your radome.

Our radome materials are cyanate ester and epoxy-based prepregs, featuring the industry's lowest density, dielectric constant, dielectric loss tangent, moisture absorption, and coefficient of thermal expansion on the market.

No other provider offers the reliability, pedigree, and technical support for your mission-critical radome program.

Choosing the Right Material

Toray Advanced Composites' extensive material testing database features results over multiple frequencies to enhance your radome design. 



Cyanate Ester/Quartz Fabric

Low Dielectric Epoxy/Quartz Fabric

Low Dielectric Epoxy/Glass Fabric

Electrical Performance


Dk - 3.2 to 3.35

DF - 0.001 to 0.009


Dk - 3.4 to 3.8

DF - 0.009 to 0.011


Dk - 4.5 and above

DF - 0.011 and above

Laminate Impact Strength


Very good


Laminate Moisture Absorption

LOWEST 0.1–0.6%

VERY LOW 0.6–0.8%

MODERATE 1.2–1.6%


Radome Antenna Systems Selector Guide

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Advanced Composite Selector Guide

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Toray composites aid connectivity for commercial aircraft article

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Toray Guide to Composites—Volume One

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Technologically Advanced Triband Satcom Radome

Virginia, USA

Triband satcom radome made using Toray Advanced Composites' thermoset prepregs, which are low dielectric and made in dedicated carbon-free manufacturing environments.

Need more information?

At Toray our goal is your success. If you have any questions or would like to learn more, please contact us. 

Toray Advanced Composites UK

Toray Advanced Composites UK
Send email +44 1773 530899

Need more information?

At Toray our goal is your success. If you have any questions or would like to learn more, please contact us. 

Toray Advanced Composites USA

Toray Advanced Composites USA
Send email +1 (408) 465 8500

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