Patent ID: 6346866
Filing Date: 2002-02-12
Classification: H01P,Y10T

Abstract:
A dielectric laminated filter comprising:a first dielectric sheet having a plurality of openings formed therein, a plurality of strip lines embedded in said plurality of openings, each strip line being thicker in cross section than a thickness of a cross section formed by screen printing to reduce deterioration of an unloaded Q of the dielectric laminated filter due to a conduction loss, a second dielectric sheet laminated over a first surface of said first dielectric sheet, a third dielectric sheet laminated over a second surface of said first dielectric sheet, a coupling electrode internally laminated in said second dielectric sheet, for forming a coupling capacity with said plurality of strip lines, an input and output coupling electrode internally laminated in said third dielectric sheet, for forming an input and output capacity with said plurality of strip lines, a first shield electrode disposed over an upper surface of said second dielectric sheet, and a second shield electrode disposed over a lower surface of said third dielectric sheet, wherein a first end surface of each of said plurality of strip lines is coupled to a ground electrode, a second end surface of each of said plurality of strip lines is open, and said first, second and third dielectric sheets are calcined into a unitary piece.