Patent ID: 6052043
Filing Date: 2000-04-18
Classification: H01P

Abstract:
A thin-film multilayered electrode comprising:a dielectric substrate;a ground conductor provided on a back surface of the dielectric substrate; anda plurality of thin-film conductive layers and dielectric layers alternately stacked on a front surface of the dielectric substrate,wherein the ground conductor, one of the thin-film conductive layers in contact with the dielectric substrate and the dielectric substrate interposed therebetween form a principal transmission line or resonator, and each additional thin-film dielectric layer and a pair of thin-film conductive layers sandwiching said additional thin-film dielectric layer form a respective sub-transmission line or sub-resonator,wherein a thickness and a dielectric constant of each thin-film dielectric layer is set such that phase velocities of waves which propagate through the principal transmission line or resonator and the sub-transmission lines or sub-resonators are substantially identical with each other;wherein a thickness of each thin-film conductive layer is set at a predetermined value which is smaller than a skin depth at a predetermined operating frequency such that electromagnetic fields between the principal transmission line or resonator and its adjacent sub-transmission line or sub-resonator and between each adjacent pair of sub-transmission lines or sub-resonators are coupled with each other; andwherein one of the thin-film dielectric layers, which is the thin-film dielectric layer closest to the dielectric substrate, has a thickness greater than that of the other thin-film dielectric layers.