Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent
1998-03-27
2000-09-19
Turner, Archene
Stock material or miscellaneous articles
Composite
Of quartz or glass
428428, 501 5, 501 11, 501 16, 501 32, 501134, C03C 1002
Patent
active
061209066
ABSTRACT:
The insulated board of this invention is a sintered body of a complex oxide containing Si, Al, Mg, Zn and B as constituent elements. This sintered body contains a spinel crystal phase containing at least ZnO and Al.sub.2 O.sub.3 and a quartz crystal phase. Since the amorphous phase does not substantially contain ZnO, Al.sub.2 O.sub.3 or MgO, the sintered body has a low dielectric loss of 30.times.10.sup.-4 or below and a dielectric constant of 30 or below at a frequency of 15 to 20 GHz. As a result, by forming a wiring layer on the surface or the inside of the insulated board of this invention, the insulated board can transmit high frequency signals at a low loss as the wiring layer.
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Kyocera Corporation
Turner Archene
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