Patent ID: 8269581
Filing Date: 2012-09-18
Classification: H01P

Abstract:
1. A band-pass filter including two or more resonant lines arranged side by side in a direction orthogonal to a laminating direction in a laminate substrate formed by laminating plural dielectric layers, wherein each of the two or more resonant lines has: at least a first coil pattern portion formed in a dielectric layer of the plural dielectric layers and a second coil pattern portion formed in another dielectric layer of the plural dielectric layers different from the dielectric layer, in which the first coil pattern portion is formed, and is formed in a spiral shape by connecting the first and second coil pattern portions in series, at least one of the first and second coil pattern portions is formed as parallel lines in the plural dielectric layers, at least a part of lines forming the parallel lines have substantially the same electrode pattern shapes, ends of each of the lines forming the parallel lines are connected via conductors, and at least one line among the parallel lines has a width larger than that of the other lines of the parallel lines.