Sintered ferrite substrate and antenna module
The present invention relates to a molded ferrite sheet having opposing surfaces and a thickness in a range of 30 µ m to 430 µ m, at least one surface of said opposing surfaces having the following surface roughness characteristics (a) to (c): (a) a center line average roughness is in a range of 170...
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| Format: | Patent |
| Sprache: | eng ; fre ; ger |
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| Zusammenfassung: | The present invention relates to a molded ferrite sheet having opposing surfaces and a thickness in a range of 30 µ m to 430 µ m, at least one surface of said opposing surfaces having the following surface roughness characteristics (a) to (c):
(a) a center line average roughness is in a range of 170 nm to 800 nm,
(b) a maximum height is in a range of 3 µ m to 10 µ m, and
(c) an area occupancy rate of cross-sectional area taken along a horizontal plane at a depth of 50 % of the maximum height in a square of side 100 µ m is in a range of 10 to 80 %. |
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