Radiating coaxial cable

Claim 2

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; d. an outer apertured conductor and radiation shield element enclosing said dielectric layer and said field perturbing element for at least a portion of the length of the cable, and being in electrically conductive contact with said field perturbing element, the aperture feature of said shield element leaving at least a portion of said field perturbing element and adjacent dielectric layer unshielded in an area of the cable covered by said shield element.

Claim 3

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; d. an outer apertured conductor and radiation shield element enclosing said dielectric layer and said field perturbing element for at least a portion of the length of the cable, and being in electrically conductive contact with said field perturbing element, the aperture feature of said shield element leaving at least a portion of said field perturbing element and adjacent dielectric layer unshielded in an area of the cable covered by said shield element.

Claim 4

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; d. an outer apertured conductor and radiation shield element enclosing said dielectric layer and said field perturbing element for at least a portion of the length of the cable, and being in electrically conductive contact with said field perturbing element, the aperture feature of said shield element leaving at least a portion of said field perturbing element and adjacent dielectric layer unshielded in an area of the cable covered by said shield element.

Claim 5

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; said field perturbing element further being a relatively poor conductor having a dielectric constant substantially different from the dielectric constant of said dielectric layer; d. an outer, apertured conductor and radiation shield element enclosing said dielectric layer and said field perturbing element over at least a portion of the cable and being in continuous contact with said field peturbing element, the aperture feature of said outer conductor and radiation shield element extending along one side of the cable and at least a portion of said field perturbing element and adjacent dielectric layer being unshielded in the aperture area.

Claim 6

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; said field perturbing element further being a relatively poor conductor having a dielectric constant substantially different from the dielectric constant of said dielectric layer; d. an outer, apertured conductor and radiation shield element enclosing said dielectric layer and said field perturbing element over at least a portion of the cable and being in continuous contact with said field peturbing element, the aperture feature of said outer conductor and radiation shield element extending along one side of the cable and at least a portion of said field perturbing element and adjacent dielectric layer being unshielded in the aperture area.

Claim 7

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; d. an apertured outer conductor and radiation shield assembly enclosing said dielectric layer and said field perturbing element over at least a portion of the cable length, said assembly comprising concentric first and second conductive layers in electrical contact with each other, the first and innermost layer having a continuous slot aperture extending along one side of the length of the said first shield layer and being in Continuous electrical contact with said field perturbing element, at least a portion of said field perturbing element and adjacent dielectric layer being left exposed and unshielded by said slot aperture; the second and outermost shield layer being configured to cover a predetermined portion only of the said slot aperture in said first layer and providing partial shielding of that portion of the field perturbing element exposed through the slot aperture.

Claim 8

A radiating high frequency transmitting cable comprising: a. at least one center conductor; b. a dielectric layer enclosing said conductor; c. at least one field perturbing element embedded a predetermined amount in the surface of said dielectric layer, said field perturbing element having different electrical conductivity properties than said dielectric layer, and being disposed so that a major portion of its length is angularly oriented with respect to the center conductor; d. an apertured outer conductor and radiation shield assembly enclosing said dielectric layer and said field perturbing element over at least a portion of the cable length, said assembly comprising concentric first and second conductive layers in electrical contact with each other, the first and innermost layer having a continuous slot aperture extending along one side of the length of the said first shield layer and being in Continuous electrical contact with said field perturbing element, at least a portion of said field perturbing element and adjacent dielectric layer being left exposed and unshielded by said slot aperture; the second and outermost shield layer being configured to cover a predetermined portion only of the said slot aperture in said first layer and providing partial shielding of that portion of the field perturbing element exposed through the slot aperture.

Claim 9

The radiation cable of claim 1, wherein said field perturbing element comprises at least one continuous, elongated, helically coiled element extending over the length of the cable, and further wherein said outer conductor and radiation shield element has a continuous slot therein extending along one side of the cable as its aperture feature, the slot leaving discontinuous portions of said field perturbing element and adjacent dielectric layer unshielded.

Claim 10

The radiating cable of claim 1, wherein said field perturbing element comprises at least one continuous, elongated, helically coiled element extending over the length of the cable and further wherein said outer apertured conductor and radiation shield element further comprises a continuous, helically wrapped apertured web totally enclosing the dielectric layer and field perturbing element except in the area where the web is apertured, the apertures in said web being in general alignment along one side of the cable over the length of the shield, and leaving discontinuous portions of said field perturbing element and adjacent dielectric layer unshielded.

Claim 11

The radiating cable of claim 1, wherein said field perturbing element is a continuous, metallic wire conductor.

Claim 12

The radiating cable of claim 1, wherein said field perturbing element is a continuous element spirally coiled and wrapped about said dielectric layer, the pitch of the coils being such that gaps of predetermined dimensions are left therebetween.

Claim 13

The radiating cable of claim 7, wherein the pitch of the coils of the field perturbing element is varied along the length of the cable.

Claim 14

The radiating cable of claim 7, wherein the depth that said field perturbing element is embedded in said dielectric layer is varied along the length of the cable.

Claim 15

The radiating cable of claim 7, wherein said field perturbing element is embedded in said dielectric layer between 1 and 75% of the cross-sectional area of the field perturbing element.