IP Library › Granted Patent US 9,209,510
Granted Patent B2
US 9,209,510 · App. 13/570,955 · Granted Dec 8, 2015

Corrugated stripline RF transmission cable

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Quick Facts
Patent No.
US 9,209,510
App. No.
13/570,955
Granted
Dec 8, 2015
Kind
B2
Abstract

A stripline RF transmission cable has a generally planar inner conductor surrounded by a dielectric layer that is surrounded by a corrugated outer conductor. The corrugations may be, for example, annular or helical. The outer conductor has a top section and a bottom section which transition to a pair of edge sections that interconnect the top section with the bottom section. The top section, bottom section and the inner conductor may be provided with generally equal widths. A spacing between the inner conductor and the dielectric layer may be reduced proximate a mid section of the inner conductor. The inner conductor may also be corrugated generally normal to a longitudinal extend of the inner conductor.

Claims (22)

1. A stripline RF transmission cable, comprising:

a generally planar inner conductor extending between a pair of inner conductor edges;

the inner conductor surrounded by a dielectric layer; and

an outer conductor, with a generally hour glass-shaped cross-section, provided with a top section and a bottom section, surrounding the dielectric layer;

the top section and the bottom section spaced farther away from each inner conductor edge than from a midsection of the inner conductor;

the outer conductor provided with corrugations; and

the inner conductor corrugated generally normal to a longitudinal extent of the inner conductor.

2. The cable of claim 1 , wherein the corrugations are annular.

3. The cable of claim 1 , wherein the corrugations are helical.

4. The cable of claim 1 , wherein a period of the corrugations of the inner conductor and a period of the corrugations of the outer conductor are equal to one another.

5. The cable of claim 1 , wherein a period of the corrugations of the inner conductor and a period of the corrugations of the outer conductor are a multiple of one another.

6. The cable of claim 1 , wherein a period of the corrugations of the inner conductor is less than a period of the corrugations of the outer conductor.

7. The cable of claim 1 , further including a polymer jacket surrounding the outer conductor.

8. A stripline RF transmission cable, comprising:

a generally planar inner conductor extending between a pair of inner conductor edges; the inner conductor corrugated generally normal to a longitudinal extent of the inner conductor;

the inner conductor surrounded by a dielectric layer; and

an outer conductor, with a generally hour glass-shaped cross-section, with a top section and a bottom section, surrounding the dielectric layer;

the outer conductor provided with annular corrugations;

the top section and the bottom section provided spaced farther away from each inner conductor edge than from a midsection of the inner conductor.

9. The cable of claim 8 , wherein a period of the corrugations of the inner conductor and a period of the corrugations of the outer conductor are equal to one another.

10. The cable of claim 8 , wherein a period of the corrugations of the inner conductor and a period of the corrugations of the outer conductor are a multiple of one another.

11. The cable of claim 8 , wherein a period of the corrugations of the inner conductor is less than a period of the corrugations of the outer conductor.