Patent US5122768A successfully refreshed from Google Patents.
US5122768A
Expired / Lapsed
US
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Compact stripline filter with fixed capacity between coupled resonator fingers
Assignee: Niterra Co Ltd
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Filing: 1990-12-21
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Granted: 1992-06-16
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Expires: 2010-12-21
Abstract
Abstract An improved stripline filter is disclosed which includes a laminate of a pair of dielectric substrates each having an outer surface provided with a ground conductor, and conducting resonator means provided between each of the two adjacent dielectric substrates and having a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, in which the ground conductor has extended portions corresponding in number to the number of the resonator fingers, each of the extended portions extending toward the open circuit end of the corresponding resonator finger and terminating with a predetermined space from the open circuit end of the corresponding resonator finger.
Inventors
- 👤 Kenji Ito
- 👤 Naomasa Wakita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:15
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20336
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
116 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface, at least one of which outer surfaces having a ground conductor thereon, a conducting resonator means between the two adjacent dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, said ground conductor having extended portions corresponding in number to the number of said plurality of resonator fingers, each of said extended portions extending toward the open circuit end of the corresponding resonator finger and terminating with a predetermined space from the open circuit end of the corresponding resonator finger.
Claim 2
Dependent Claim
116 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface, at least one of which outer surfaces having a ground conductor thereon, a conducting resonator means between the two adjacent dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, said ground conductor having extended portions corresponding in number to the number of said plurality of resonator fingers, each of said extended portions extending toward the open circuit end of the corresponding resonator finger and terminating with a predetermined space from the open circuit end of the corresponding resonator finger.
Claim 3
Dependent Claim
117 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface, at least one of said outer surface having a ground conductor thereon, and conducting resonator means provided between the adjacent two dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, one of said substrates having at least one opening to provide access to the terminal end of said resonator means, and a layer of electrically insulating resin material on said ground conductor on the outer surface of said laminate except at the terminal openings leading from the conducting resonator means.
Claim 4
Dependent Claim
117 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface, at least one of said outer surface having a ground conductor thereon, and conducting resonator means provided between the adjacent two dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, one of said substrates having at least one opening to provide access to the terminal end of said resonator means, and a layer of electrically insulating resin material on said ground conductor on the outer surface of said laminate except at the terminal openings leading from the conducting resonator means.
Claim 5
Dependent Claim
27 words
A stripline filter as set forth in claim 1, wherein each of the edges of said laminate substrate outer surface provided with the ground conductor is chamfered.
Claim 6
Dependent Claim
26 words
A stripline filter as set forth in claim 2, characterized in that each of the edges of said laminate provided with the ground conductor is chamfered.
Claim 7
Dependent Claim
20 words
A stripline filter as in claim 1 wherein each said dielectric substrate has a ground conductor on its outer surface.
Claim 8
Dependent Claim
105 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface with at least one said outer surface having a ground conductor thereon, and conducting resonator means provided between the adjacent two dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, and a layer of electrically insulating resin material on the ground conductor except at the terminal portions leading from the conducting resonator means, thereon being the outer edges of a substrate covered with the ground conductor are chamfered.
Claim 9
Dependent Claim
105 words
A stripline filter comprising a laminate of a pair of dielectric substrates each having an outer surface with at least one said outer surface having a ground conductor thereon, and conducting resonator means provided between the adjacent two dielectric substrates of the laminate and including a plurality of parallel resonator fingers each having an open circuit end and a base end electrically connected to said ground conductor, and a layer of electrically insulating resin material on the ground conductor except at the terminal portions leading from the conducting resonator means, thereon being the outer edges of a substrate covered with the ground conductor are chamfered.
Claim 10
Dependent Claim
34 words
A stripline filter as in claim 2 wherein each said dielectric substrate has a ground conductor on its outer surface, each said ground conductor being covered by a layer of electrically insulating resin material.
References Cited (Backward Citations)
USRE31470E
Cited
US4560965A
Cited
JPS6271302A
Cited
US4609892A
Cited
US4808951A
Cited
JPS63219202A
Cited
US4975664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |