Patent US4891616A successfully refreshed from Google Patents.
US4891616A
Expired / Lapsed
US
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Parallel planar signal transmission system
Assignee: Honeywell Inc
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Filing: 1988-06-01
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Granted: 1990-01-02
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Expires: 2008-06-01
Abstract
Abstract A differential-mode signal transmission system includes a circuitboard composed of at least one dielectric board substrate and a pair of spaced apart conductive parallel planar signal transmission lines disposed on one surface of the substrate and extending between a pair of edges thereof for providing pass-through transmission of differential-mode signals from one to the opposite edge of the substrate. Preferably, the circuitboard is composed of at least a pair of dielectric board substrates being disposed in face-to-face layered contact with one another and having at least one pair of the spaced apart conductive parallel planar signal transmission lines disposed between the layered substrates along the inner surfaces thereof. Ground planes are provided on the outer surfaces of the layered substrates for electrically shielding the parallel planar transmission line pair. Connectors in the form of spaced pairs of conductively plated through holes being electrically isolated from the ground planes on substrate outer surfaces are provided through the substrates and electrically connected to the parallel planar transmission lines for facilitating connection of electrical components thereto.
Inventors
- 👤 Gerald W. Renken
- 👤 Kimberly J. Gray
- 👤 Michael W. Greenwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/0245; H05K1/0296; H05K1/0298; H05K2201/00; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K2201/09; H05K2201/09209; H05K2201/09218; H05K2201/09236; H05K3/00; H05K3/40; H05K3/42; H05K3/429
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A signal transmission system for differential-mode signal transmission, comprising: (a) a circuit board composed of more than a pair of dielectric board substrates having opposite surfaces and being bounded by a plurality of opposite edges, said substrates being disposed in pairs having face-to-face layered contact with one another at inner ones of said opposite surfaces thereof; and (b) at least one pair of spaced apart conductive parallel planar signal transmission lines arranged for transmission of differential-mode signals being disposed between each pair of said substrates along said inner surfaces thereof and extending between corresponding pairs of said edges of said substrates for providing pass-through transmission of differential-mode signals from one edge to another edge of said pair of substrate edges through each conductive transmission line.
Claim 2
Dependent Claim
125 words
A signal transmission system for differential-mode signal transmission, comprising: (a) a circuit board composed of more than a pair of dielectric board substrates having opposite surfaces and being bounded by a plurality of opposite edges, said substrates being disposed in pairs having face-to-face layered contact with one another at inner ones of said opposite surfaces thereof; and (b) at least one pair of spaced apart conductive parallel planar signal transmission lines arranged for transmission of differential-mode signals being disposed between each pair of said substrates along said inner surfaces thereof and extending between corresponding pairs of said edges of said substrates for providing pass-through transmission of differential-mode signals from one edge to another edge of said pair of substrate edges through each conductive transmission line.
Claim 3
Dependent Claim
45 words
The transmission system of claim 1 further comprising: (c) connector means disposed in said substrates, exposed at least at one of said outer surfaces of said substrates, and electrically connected to said pair of parallel planar transmission lines for facilitating connection of electrical components thereto.
Claim 4
Dependent Claim
24 words
The transmission system of claim 2 wherein said connector means includes at least a pair of conductively plated through holes defined in said substrates.
Claim 5
Dependent Claim
46 words
The transmission system of claim 2 wherein said connector means includes at least two spaced pairs of conductively plated through holes defined in said substrates with said pair of parallel planar transmission lines being interrupted along said substrate inner surfaces between said pairs of through holes.
Claim 6
Dependent Claim
35 words
The transmission system of claim 1 further comprising: (c) means disposed on outer ones of said surfaces of said substrates for defining ground planes thereon which electrically shield said pair of parallel planar transmission lines.
Claim 7
Dependent Claim
59 words
The transmission system of claim 5 further comprising: (d) connector means disposed in said substrates, exposed at least at one of said outer surfaces of said substrates, electrically isolated from said ground plane defining means on said one substrate outer surface, and electrically connected to said pair of parallel planar transmission lines for facilitating connection of electrical components thereto.
Claim 8
Dependent Claim
24 words
The transmission system of claim 5 wherein said connector means includes at least a pair of conductively plated through holes defined in said substrates.
Claim 9
Dependent Claim
46 words
The transmission system of claim 5 wherein said connector means includes at least two spaced pairs of conductively plated through holes defined in said substrates with said pair of parallel planar transmission lines being interrupted along said substrate inner surfaces between said pairs of through holes.
Claim 10
Dependent Claim
30 words
The transmission system of claim 1 wherein more than one pair of said parallel planar transmission lines is disposed along said inner surfaces of said substrates and between said substrates.
References Cited (Backward Citations)
US3459879A
Cited
US3875542A
Cited
US3757028A
Cited
US3876822A
Cited
US3859711A
Cited
US4047132A
Cited
US4045750A
Cited
US4143931A
Cited
JPS5521665A
Cited
US4255613A
Cited
US4362899A
Cited
JPS56154804A
Cited
US4498122A
Cited
US4560962A
Cited
US4692720A
Cited
US4616292A
Cited
US4743868A
Cited
US4733209A
Cited
US4785135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |