EP1050960A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Laminated LC filter
Assignee: Murata Manufacturing Co Ltd
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Filing: 2000-05-05
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Granted: —
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Expires: 2020-05-05
Abstract
Abstract The present invention provides a laminated LC filter (51) in which the inductance of the LC resonator is large, and having an excellent Q characteristic. The inductor patterns (54a,b/55a,b) are in identical shapes, laminated through the insulation sheets (52), and constitute respective inductors (L1/L2) having duplex structure. Capacitor patterns (58a,b/59a,b) are opposite to enlarged parts (56a,b/57a,b) of the inductor patterns, and form respective capacitors. A coupling capacitor pattern (62) is located between the inductor patterns (54a,b;55a,b).
Inventors
- 👤 Noboru c/o Murata Manufacturing Co. Ltd. Kato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 03:36
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/01; H03H7/17; H03H7/1741; H03H7/1775; H03H3/00; H03H7/0115; H03H1/00; H03H2001/0021; H03H2001/0085
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
A laminated LC filter, comprising: a laminated body (51) formed by stacking a plurality of insulation
layers (52), a plurality of inductor patterns (54a,b;55a,b), and a plurality of
capacitor patterns (58a,b;59a,b); and a plurality of LC resonators (Q1,Q2) constituted of a plurality of
inductors (L1,L2) formed by said inductor patterns, and a plurality of
capacitors in which said capacitor patterns (58a,b;59a,b) are formed to be
opposite to said inductor patterns (58a,b;59a,b), at an inside of said
laminated body, wherein said inductor (L1/L2) of each LC resonator is made as a
multiplex structure by laminating two or more (54a,b/55a,b) of said
inductor patterns in approximately identical shapes via said insulation
layers, and coupling capacitor patterns (62) for capacitive-coupling
between said LC resonators are laminated between the inductor patterns
of said inductors.
Claim 2
Dependent Claim
25 words
A laminated LC filter (71) according to claim 1, wherein capacitor
patterns (72,73) for input/output are laminated between the inductor
patterns (54a,b;55a,b) of said inductors.
Claim 3
Dependent Claim
70 words
A laminated LC filter (81) according to claim 1 or 2, wherein
three or more stages of filters (Q1-Q3) are constituted by connecting at
least three of the LC resonators (L1-L3), and the pattern widths of the
inductor patterns (84a,b) forming the LC resonators located at other than
both ends are made wider than the pattern widths of the inductor patterns
(83a,b;85a,b) forming the LC resonators located at both ends.
Claim 4
Dependent Claim
29 words
A laminated LC filter (81) according to claim 1, 2 or 3, wherein
patterns (95) for a pole adjustment are laminated between the inductor
patterns (83a,b;84a,b;85a,b) of said inductors.
References Cited (Backward Citations)
No citation records indexed.
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