Patent EP0774797A2 successfully refreshed from Google Patents.
EP0774797A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Laminated resonator and laminated band pass filter using same
Assignee: Murata Manufacturing Co Ltd
•
Filing: 1996-11-20
•
Granted: —
•
Expires: 2016-11-20
Abstract
Abstract Dielectric sheets (2) having internal electrodes (4) and (5) formed on the respective surfaces thereof, a dielectric sheet (2) having an outgoing electrode (6) formed on the surface thereof, and dielectric sheets (2) having a shielded electrode (3) formed on the surface thereof are piled and integrally sintered to form a lamination. Grounding external electrodes are formed on the front side and the rear side of this lamination, respectively, and an input/output external electrode is formed on the left side thereof. An end portion (4a) of the internal electrodes (4) and an end portion (3a) of the shielded electrodes (3) are connected to the grounding external electrode on the front side. An end portion (5a) of the internal electrodes (5) and an end portion (3b) of the shielded electrode (3) are connected to the grounding external electrode on the rear side. An end portion (6a) of the outgoing electrode (6) is connected to the input/output external electrode on the left side. The end portion (6b) of the outgoing electrode (6) is capacitance-coupled with the adjacent internal electrode (5).
Inventors
- 👤 Hisatake Okamura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 16:11
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/46; H03H7/00; H03H7/01; H03H7/0115; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20336; H01P1/20345; H01P7/00; H01P7/08; H01P7/084; H03H1/00; H03H2001/0021; H03H2001/0085
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
106 words
A laminated resonator comprising: at least a pair of opposed internal electrodes (4, 5); an outgoing electrode (6) electrically coupled with at least one of said internal electrodes; a lamination formed by at least an insulator (2), said internal electrodes and said outgoing electrode; a first external electrode (7), provided on the surface of said lamination, and connected to one of said internal electrodes; a second external electrode (8), provided on the surface of said lamination, and connected to another of said internal electrodes; and a third external electrode (9), provided on the surface of said lamination, and connected to at least said outgoing electrode (6).
Claim 2
Dependent Claim
18 words
A laminated resonator according to claim 1, wherein said third external electrode (9) is an input/output external electrode.
Claim 3
Dependent Claim
31 words
A laminated resonator according to claim 1 or 2, wherein at least one of said first external electrode (7) and said second external electrode (8) is an external electrode for grounding.
Claim 4
Dependent Claim
44 words
A laminated resonator according to any one of claims 1 to 3, wherein said electric coupling between said at least one of said internal electrodes and said outgoing electrode (6) is one of capacitive coupling, inductive coupling and direct coupling, or a combination thereof.
Claim 5
Dependent Claim
48 words
A laminated resonator according to any one of claims 1 to 3, wherein said electric coupling between said at least one of said internal electrodes and said outgoing electrode (6) is capacitive coupling, and said outgoing electrode is arranged between said internal electrodes or outside said internal electrodes.
Claim 6
Dependent Claim
32 words
A laminated resonator according to any one of claims 1 to 5, wherein a shielded electrode (3) is provided on at least one of the upper and lower surfaces of said lamination.
Claim 7
Dependent Claim
30 words
A laminated resonator according to claim 6, wherein said shielded electrode (3) is connected to at least one of said first external electrode (7) and said second external electrode (8).
Claim 8
Dependent Claim
24 words
A laminated resonator according to claim 6, wherein said shielded electrode (3) is not connected to any of the external electrodes (7, 8, 9).
Claim 9
Dependent Claim
35 words
A laminated resonator according to any one of claims 6 to 8, wherein a distance between at least one of said internal electrodes and said shielded electrode (3) is at least 300 µm or more.
Claim 10
Dependent Claim
72 words
A laminated resonator according to any previous claim, wherein the first external electrode (7) is disposed on a first side of the lamination and is connected to at least said first internal electrode; the second external electrode (8) is disposed on a second side of the lamination and is connected to at least said second internal electrode; and the third external electrode (9) is disposed on a third side of the lamination.
Claim 11
Dependent Claim
119 words
A laminated band pass filter having at least two resonators, wherein: each of said resonators has at least a pair of oppositely arranged internal electrodes (4, 5) and an outgoing electrode (6) electrically coupled with at least one of said internal electrodes; and wherein a first external electrode (7) connected to at least one of the internal electrodes of said resonators, a second external electrode (8) connected to at least one of the internal electrodes of said resonators, and a third (9) and a fourth (10) external electrode connected to respective outgoing electrodes of said resonators, are provided on the surface of a lamination formed by said internal electrodes (4, 5), said outgoing electrodes (6) and an insulator (2).
Claim 12
Dependent Claim
23 words
A laminated band pass filter according to claim 11, wherein said third (9) and said fourth (10) external electrodes are input/output external electrodes.
Claim 13
Dependent Claim
33 words
A laminated band pass filter according to claim 11 or 12, wherein at least one of said first external electrode (7) and said second external electrode (8) is an external electrode for grounding.
Claim 14
Dependent Claim
51 words
A laminated band pass filter according to any one of claims 11 to 13, wherein, for each of said resonators, said electric coupling between said at least one of said internal electrodes and said outgoing electrode (6) is one of capacitive coupling, inductive coupling and direct coupling, or a combination thereof.
Claim 15
Dependent Claim
58 words
A laminated band pass filter according to any one of claims 11 to 13, wherein, for each of said resonators, said electric coupling between said at least one of said internal electrodes (4, 5) and said outgoing electrode (6) is capacitive coupling, and said outgoing electrode (6) is arranged between said internal electrodes or outside said internal electrodes.
Claim 16
Dependent Claim
35 words
A laminated band pass filter according to any one of claims 11 to 15, wherein a shielded electrode (2) is provided on at least one of the upper and the lower surfaces of said lamination.
Claim 17
Dependent Claim
32 words
A laminated band pass filter according to claim 16, wherein said shielded electrode (3) is connected to at least one of said first external electrode (7) and said second external electrode (8).
Claim 18
Dependent Claim
26 words
A laminated band pass filter according to claim 16, wherein said shielded electrode (3) is not connected to any of the external electrodes (7, 8, 9).
Claim 19
Dependent Claim
44 words
A laminated band pass filter according to any one of claims 16 to 18, wherein, for each of said resonators, the distance between at least one of said internal electrodes (4, 5) and said shielded electrode (3) is at least 300 µm or more.
Claim 20
Dependent Claim
65 words
A laminated band pass filter according to any one of claims 11 to 18, wherein said first external electrode (7) and said second external electrode (8) are formed on opposite sides of said lamination, and wherein, for each of said resonators, said internal electrodes (4, 5) extend to said respective opposite surfaces, and are connected to said first and second external electrodes (7, 8), respectively.
Claim 21
Dependent Claim
196 words
A laminated band pass filter according to any one of claims 11 to 20, wherein: said lamination comprises at least an insulator (2), first (4 1 ) and second (5 1 ) opposing internal electrodes, third (4 2 ) and fourth (5 2 ) opposing internal electrodes, and first and second outgoing electrodes (6 1 , 6 2 ); said first outgoing electrode (6 1 ) is connected to at least one of said first or said second internal electrodes (4 1 , 5 1 ), and said second outgoing electrode (6 2 ) is connected to at least one of said third or fourth internal electrodes (4 2 , 5 2 ); said first external electrode (7) is disposed on a first side of said lamination; said second external electrode (8) is disposed on a second side of said lamination; said third external electrode (9) is disposed on a third side of said lamination, and is connected to at least said first outgoing electrode (6 1 ); and said fourth external electrode (10) is disposed on a fourth side of said lamination, and is connected to at least said second outgoing electrode (6 2 ).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.