Patent US2246402A successfully refreshed from Google Patents.
Patent EP0204446A2 successfully refreshed from Google Patents.
EP0204446A2
Expired / Lapsed
EP
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Electrical transmission line
Assignee: Junkosha Co Ltd
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Filing: 1986-05-14
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Granted: —
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Expires: 2006-05-14
Abstract
Abstract An electrical transmission unit line is provided comprising a porous dielectric layer (2) having positioned on one side thereof a pair of narrow, parallel elongate electrical conductors (such as 1a 1 , 1 a2) and on the other side thereof, opposite the pair of conductors and extending transversely across both wires of the pair and parallel thereto, a wide ground conductor (such as 1a 3 ). An electrical transmission line having a plurality of such unit lines is also provided. The porous dielectric is preferably porous, expanded polytetrafluoroethylene. The transmission lines are covered with an electrically insulating material (3), preferably a nonporous plastic.
Inventors
- 👤 Hirosuke Suzuki
- 👤 Tetsuro Umebayashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 15:05
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/08; H01B7/0838; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K3/00; H05K3/22; H05K3/28; H05K1/0213; H05K1/0216; H05K1/0218; H05K1/0219; H05K1/0237; H05K1/024; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0116; H05K2201/0137; H05K2201/015; H05K2201/0183; H05K2201/0195; H05K2201/09; H05K2201/09209; H05K2201/09218; H05K2201/09236
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
An electrical transmission line comprising a porous dielectric layer having positioned on one side thereof one pair of elongate electrical conductors parallel spaced apart from each other and on the other side of said layer, opposite said pair of conductors, a ground conductor extending parallel to said pair of conductors and having a width such that the ground conductor extends transversely across both conductors of said pair, this assembly being covered with a solid electrically insulating resin layer.
Claim 2
Dependent Claim
78 words
An electrical transmission line comprising a porous dielectric layer having positioned on one side thereof one pair of elongate electrical conductors parallel spaced apart from each other and on the other side of said layer, opposite said pair of conductors, a ground conductor extending parallel to said pair of conductors and having a width such that the ground conductor extends transversely across both conductors of said pair, this assembly being covered with a solid electrically insulating resin layer.
Claim 3
Dependent Claim
69 words
A transmission line according to claim 1 comprising one or more further pairs of parallel- spaced conductors positioned on one side of said porous layer, the or each further pair having a further ground conductor positioned opposite and parallel to said pair on the other side of said dielectric layer and having a width such that the further ground conductor extends transversely across both conductors of said further pair.
Claim 4
Dependent Claim
45 words
A transmission line according to claim 1 having a second dielectric layer separating said pair of conductors from a second ground conductor opposite and parallel to said pair of conductors and having a width such that it extends transversely across both conductors of said pair.
Claim 5
Dependent Claim
25 words
A transmission line according to any preceding claim wherein said ground conductor comprises a plurality of conductors disposed alongside and in contact with each other.
Claim 6
Dependent Claim
33 words
A transmission line according to any preceding claim having a separation layer positioned between said pair of conductors and said porous dielectric layer or between said ground conductor and said porous dielectric layer.
Claim 7
Dependent Claim
35 words
A transmission line according to any preceding claim having at least one additional layer of a porous dielectric positioned between said pair of conductors and said covering or between said ground conductor and said covering.
Claim 8
Dependent Claim
27 words
A transmission line of fiat cable shape and comprising a plurality of transmission lines, each according to any preceding claim, disposed alongside and connected to one another.
Claim 9
Dependent Claim
37 words
A transmission line according to claim 2 wherein all said pairs of conductors are positioned on one side of said dielectric layer and all said ground conductors are positioned on the other side of said dielectric layer.
Claim 10
Dependent Claim
26 words
A transmission line according to claim 2 wherein said pairs of conductors and said ground conductors are alternately disposed on both sides of said dielectric layer.
Claim 11
Dependent Claim
33 words
A transmission line according to claim 2 wherein a portion of said porous dielectric layer between adjacent sets of conductor pairs and ground conductor is compressed to increase the density of said portion.
Claim 12
Dependent Claim
21 words
A transmission line according to claim 2 wherein a solid film is disposed between said porous dielectric layer and said conductors.
Claim 13
Dependent Claim
24 words
A transmission line according to claim 2 wherein a solid film is interleaved alternately through said conductors in the transverse direction across said line.
Claim 14
Dependent Claim
22 words
A transmission line according to claim 1 wherein an antistatic layer is provided on the outer surface of said covering resin layer.
Claim 15
Dependent Claim
13 words
A transmission line according to claim 1 provided with an outer shielding layer.
References Cited (Backward Citations)
No citation records indexed.
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