FILTER AND MODULE DEVICE INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a filter which can easily regulate filter characteristics without a step of forming a pattern for trimming, and to provide a module component. SOLUTION: A substrate having a laminated structure includes at least two layers of ground surfaces, and at least one resonator layer including a strip line resonator sandwiched between the ground surfaces. The resonator is connected to the ground surface via a semicircular through hole provided at the end face of the substrate. COPYRIGHT: (C)2005,JPO&NCIPI