Laminated LC filter where the pattern widths of the central portion air is greater than the end portions
AssigneeMurata Manufacturing Co., Ltd.
InventorNoboru Kato
Life of this patent
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Abstract
A laminated LC filter having very large inductance and an excellent Q characteristic, includes insulation layers, inductor patterns having substantially the same shapes and capacitor patterns. The inductor patterns are laminated through the insulation layers, and constitute the inductor of the duplex structure. Similarly, the inductor patterns also constitute the inductor of the duplex structure. The capacitor patterns are opposite to the increased width portions of the inductor patterns, and define the capacitor. Similarly, the capacitor patterns are opposite to the increased width portions of the inductor patterns, and define the capacitor. The coupling capacitor pattern is located between the inductor patterns.
Claims6
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.
A laminated LC filter, comprising:
- a laminated body including a stacked arrangement of a plurality of stacked insulation layers, a plurality of inductor patterns, and a plurality of capacitor patterns;
- a plurality of LC resonators including a plurality of inductors provided by said inductor patterns, and a plurality of capacitors, such that said capacitor patterns are opposite to said inductor patterns, at an inside of said laminated body;
- and
- capacitor patterns for input/output laminated between the inductor patterns of said inductors;
- wherein
- the pattern widths in a central portion of the laminated body are greater than the pattern widths at the end portions thereof.
Dependencies are inferred from the claim text.