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US 12,584,004 B2Granted
Highly dielectric metal oxide filled polymers for radio frequency products
AssigneeQinetiq Limited
InventorsChristopher Douglas James Spooner, Emma Jane Newton, Robert Nathan Williams, Louisa Alice Laing, Lyn David Jones, Lloyd Morris Wye
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Abstract
Multi-layered articles or products comprising layers of filled polymer compositions, methods of making and applications or uses thereof.
Claims17
A multi-layered article or product comprising at least two layers, wherein:
- a first one of the at least two layers is a polymer composition comprising a polymer and a filler material, wherein the filler material comprises a surface treated metal oxide;
- a second one of the at least two layers is a foamed polymer layer;
- the first one of the at least two layers is an inner layer and the second one of the at least two layers is an outermost layer of the multi-layered article or product such that the second one of the at least two layers is configured to receive an incident RF signal before the first one of the at least two layers;
- and
- the second one of the at least two layers has an intrinsic dielectric constant (dk) of less than 2.0 such that it will act as a matching layer for reducing impedance mismatch and reflections of the incident RF signal from the multi-layered article or product.
2 more elements
Dependencies are inferred from the claim text.