Patent ID: 6630873
Filing Date: 2003-10-07
Classification: H03H

Abstract:
A magneto static wave filter having a ferromagnetic substance stacked on one side of a dielectric substrate, one side of which is grounded, said filter including an input section having an input transfer line and an input energy transformer for causing the energy transformation between an electromagnetic wave and a magnetostatic wave, and an output section having an output energy transformer for causing the energy transformation between the electromagnetic wave and the magnetostatic wave and an output transfer line, being characterized in that:each exciting line in said input energy transformer and said output energy transformer having a width that varies in dimension along a longitudinal direction, the filter further includes a shield film formed of a grounded conductive film having holes through which a magnetic thin film can pass between said input section and said output section, for preventing coupling of an electromagnetic wave of said input section and said output section.