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US 12,528,922 B2Granted
Plate-shaped composite material
AssigneeNitto Denko Corporation
InventorsShunji Imamura, Shimpei Yakuwa, Kou Uemura
Life of this patent
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Abstract
Provided is a plate-shaped composite material which can sufficiently exhibit an interference effect between antenna elements when utilized as, for example, a substrate of a microstrip patch antenna. The interference effect between the antenna elements can be sufficiently exhibited by controlling the composite material so that, when the material is divided into a plurality of regions, a standard deviation of density values of the respective regions is kept at a certain value or less.
Claims8
A plate-shaped composite material, comprising:
- a resin;
- and
- at least one kind selected from the group consisting of a filler and a reinforcing material,
- wherein the resin is formed from a granulated resin product and a median diameter d50 of a granulated product of the resin is 0.5 μm or more and 700 μm or less,
- wherein, when the plate-shaped composite material is divided into a plurality of regions, a standard deviation of densities (unit:
- g/cm3) of the respective regions is 0.027 or less, which is calculated from a density value group including the densities, and
- wherein number of regions in the plurality regions of the plate-shaped composite material is from 4 to 100.
4 more elements
Dependencies are inferred from the claim text.