Patent ID: 6784762
Filing Date: 2004-08-31
Classification: H03H

Abstract:
A laminated LC filter, comprising:a laminated body including a stacked arrangement of a plurality of insulation layers, a plurality of inductor patterns, and a plurality of capacitor patterns; and a plurality of LC resonators including a plurality of inductors defined by said inductor patterns, and a plurality of capacitors defined by said capacitor patterns, said capacitor patterns being arranged opposite to said inductor patterns at an inner portion of said laminated body; wherein said inductor of each of the plurality of LC resonators has a multiplex structure including a laminated body having at least two of said inductor patterns and said insulation layers, and coupling capacitor patterns arranged between the inductor patterns of said inductors to capacitive-couple said LC resonators; and the pattern widths in a central portion of the laminated body are greater than the pattern widths at the end portions thereof.