EP0227268A2
Expired / Lapsed
EP
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Transmission line
Assignee: Junkosha Co Ltd
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Filing: 1986-11-03
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Granted: —
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Expires: 2006-11-03
Abstract
Abstract A high speed electrical transmission line (1) comprises a signal conductor (2) having an open cell, continuously porous, polymeric insulating material (3) surrounding the conductor, the insulating material having a plurality of openings (4) fused therein, the material adjacent the openings being solid, fused polymer which provides compressive strength for the otherwise highly compressible porous insulating material. The preferred polymer is expanded, porous polytetrafluoroethylene. The openings can be grooves or holes and can be formed by a laser or by other means.
Inventors
- 👤 Hirosuke Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 12:54
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/02; H01B7/0233; H01B11/00; H01B11/18; H01B11/1834; H01B11/1839; H01B7/08; H01B7/0838
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
An electrical transmission line comprising a signal conductor, a porous polymeric insulating material surrounding said conductor, said insulating material having at least one opening therein, the polymeric material adjacent said opening being solid, fused polymeric material which provides compressive strength for the otherwise highly compressible, porous material.
Claim 2
Dependent Claim
47 words
An electrical transmission line comprising a signal conductor, a porous polymeric insulating material surrounding said conductor, said insulating material having at least one opening therein, the polymeric material adjacent said opening being solid, fused polymeric material which provides compressive strength for the otherwise highly compressible, porous material.
Claim 3
Dependent Claim
21 words
A transmission line according to claim 1 having a plurality of said openings, each having solid fused polymeric material adjacent thereto.
Claim 4
Dependent Claim
18 words
A transmission line according to claim 1 wherein said opening is a groove extending helically about said conductor.
Claim 5
Dependent Claim
17 words
A transmission line according to claim 2 wherein said openings are oriented radially outwardly from said conductor.
Claim 6
Dependent Claim
17 words
A transmission line according to any preceding claim wherein said insulating material is porous, expanded, unsintered polytetrafluoroethylene.
Claim 7
Dependent Claim
22 words
A transmission line according to any one of claims 1 to 4 wherein said insulating material is porous, expanded, amorphously locked polytetrafluoroethylene.
Claim 8
Dependent Claim
15 words
A transmission line according to any preceding claim in the form of a round cable.
Claim 9
Dependent Claim
20 words
A transmission line according to claim 7 having an outer conductor around said insulating material to form a coaxial cable.
Claim 10
Dependent Claim
27 words
A transmission line according to claim 2 having a plurality of conductors oriented substantially in parallel between sheets of said insulating material to form a flat cable.
References Cited (Backward Citations)
No citation records indexed.
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