Patent ID: 6198367
Filing Date: 2001-03-06
Classification: H01P

Abstract:
A high-frequency electronic device comprising:a single-crystal dielectric substrate having a bottom face and a top face;a first ground conductor layer formed on the bottom face of the single-crystal dielectric substrate;a first wiring conductor layer constituting a high-frequency electronic circuit formed on the top face of the single-crystal dielectric substrate;a first dielectric substrate having a bottom face and a top face;a second ground conductor layer formed on the bottom face of the first dielectric substrate,the first dielectric substrate being in contact with the single-crystal dielectric substrate so that the top face of the first dielectric substrate forms substantially the same plane with the top face of the single-crystal dielectric substrate;a second dielectric substrate having a top face and a bottom face;a second wiring conductor layer formed on the top face of the first dielectric substrate or the bottom face of the second dielectric substrate; anda third ground conductor layer formed on the top face of the second dielectric substrate,wherein the second dielectric substrate is attached to the top faces of the single-crystal dielectric substrate and the first dielectric substrate so as to cover the top face of the single-crystal dielectric substrate and,wherein the first ground conductor layer is electrically connected with the second ground conductor layer and also electrically connected with the third ground conductor layer via a first through conductor disposed to pass through the first dielectric substrate and the second dielectric substrate andwherein the first wiring conductor layer is electrically connected with the second wiring conductor layer,and also electrically connectable with an external electric circuit via a second through conductor disposed to pass through the first dielectric substrate or the second dielectric substrate.