Patent ID: 11920011

Abstract:
The present invention is a resin substrate including an organic resin and a quartz glass cloth, where the organic resin has a dielectric loss tangent of 0.0002 to 0.0020 measured at 10 GHz and a 40 GHz/10 GHz ratio is 0.4 to 0.9, the quartz glass cloth has a dielectric loss tangent of 0.0001 to 0.0015 measured at 10 GHz and a 40 GHz/10 GHz ratio is 1.2 to 2.0, and the resin substrate has a dielectric loss tangent of 0.0001 to 0.0020 at 10 GHz and a 40 GHz/10 GHz ratio is 0.8 to 1.2. This provides a resin substrate having a low dielectric loss tangent in a high-frequency region and dielectric characteristics with little frequency dependence.