Patent ID: 7432038
Filing Date: 2008-10-07
Classification: H01P,Y10T

Abstract:
1. A method for producing a dielectric line having a dielectric strip provided between two conductive plates approximately parallel to each other and having a width smaller than that of the conductive plates, and dielectric medium layers filled between the conductive plates other than the dielectric strip and composed of a porous material having a dielectric constant smaller than that of the dielectric strip, the method comprising: a film forming step of forming a film on one of the conductive plates using a dielectric raw material; a strip exposure step of exposing a part of the film of the dielectric raw material to predetermined light, beams, or vapor, the part having a shape corresponding to the dielectric strip; and then a pore forming step of making the entire film of the dielectric raw material porous, wherein porosity of the exposed part of the film is greater than porosity of an unexposed part of the film.