RF cable having clad conductors and method of making same
First Claim
1. A radio frequency cable comprising:
- an inner tubular conductor having a first bulk layer formed of a relatively lower conductivity material;
a plurality of continuous strips of a relatively higher conductivity material disposed on less than an entire surface of the first bulk layer to form first margin regions free of the higher conductivity material;
the first margin regions of the first bulk layer of lower conductivity material being joined together to form the inner tubular conductor with only the first margin regions of lower conductivity material joined;
a layer of dielectric material surrounding the inner conductor;
an outer tubular conductor having a second bulk layer formed of a relatively lower conductivity material;
a plurality of continuous strips of a relatively higher conductivity material disposed on less than an entire surface of the second bulk layer to form second margin regions free of the higher conductivity material;
the second margin regions of the second bulk layer of lower conductivity material being joined together to form the outer tubular conductor with only the second margin regions of lower conductivity material joined; and
wherein the plurality of strips of the higher conductivity material of the inner tubular conductor face outwardly toward the dielectric material and the plurality of strips of the higher conductivity material of the outer tubular conductor face inwardly toward the dielectric material.
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Accused Products
Abstract
An RF coaxial cable with clad conductors includes an inner tubular conductor having a first base layer formed of a relatively higher conductivity material, and a first bulk layer formed of a relatively lower conductivity material. The first base layer of higher conductivity material extends over an area greater than an area of the first bulk layer to form first margin regions composed of only the higher conductivity material. The first margin regions of the first base layer of the higher conductivity material are joined together to form the inner tubular conductor with only the first margin regions of the higher conductivity material being joined. Also included is a dielectric material surrounding the inner conductor, an outer tubular conductor formed in the same manner as the inner conductor. The first base layer of higher conductivity material of the inner tubular conductor faces outwardly toward the dielectric material and the higher conductivity material corresponding to the outer tubular conductor faces inwardly toward the dielectric material.
43 Citations
19 Claims
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1. A radio frequency cable comprising:
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an inner tubular conductor having a first bulk layer formed of a relatively lower conductivity material;
a plurality of continuous strips of a relatively higher conductivity material disposed on less than an entire surface of the first bulk layer to form first margin regions free of the higher conductivity material;
the first margin regions of the first bulk layer of lower conductivity material being joined together to form the inner tubular conductor with only the first margin regions of lower conductivity material joined;
a layer of dielectric material surrounding the inner conductor;
an outer tubular conductor having a second bulk layer formed of a relatively lower conductivity material;
a plurality of continuous strips of a relatively higher conductivity material disposed on less than an entire surface of the second bulk layer to form second margin regions free of the higher conductivity material;
the second margin regions of the second bulk layer of lower conductivity material being joined together to form the outer tubular conductor with only the second margin regions of lower conductivity material joined; and
wherein the plurality of strips of the higher conductivity material of the inner tubular conductor face outwardly toward the dielectric material and the plurality of strips of the higher conductivity material of the outer tubular conductor face inwardly toward the dielectric material. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An RF waveguide or coaxial transmission line conductor, comprising:
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a hollow tubular conductor formed from a strip having at least a first layer composed of a relatively lower conductivity material, and at least a second layer composed of a relatively higher conductivity material;
the tubular conductor having a longitudinal joint along which longitudinal edges of the strip are joined; and
wherein the first layer of lower conductivity material does not extend to the joint such that only the longitudinal edges having the relatively higher conductivity material meet and form the joint. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of making a radio frequency cable comprising the steps of:
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a) providing a first base layer formed of a relatively higher conductivity material;
b) disposing a first bulk layer formed of a relatively lower conductivity material on the first base layer so that the first base layer of higher conductivity material extends over an area greater than an area of the first bulk layer to form first margin regions composed of only the higher conductivity material;
c) joining together the first margin regions of the first base layer of the higher conductivity to form an inner tubular conductor with only the first margin regions of the higher conductivity material joined;
d) surrounding the inner tubular conductor with a dielectric material;
e) providing a second base layer formed of a relatively higher conductivity material;
f) disposing a second bulk layer formed of a relatively lower conductivity material on the second base layer so that the second base layer of higher conductivity material extends over an area greater than an area of the second bulk layer to form second margin regions composed of only the higher conductivity material; and
g) joining together the second margin regions of the second base layer of the higher conductivity to form the outer tubular conductor with only the second margin regions of the higher conductivity joined, the outer tubular conductor formed over the dielectric material.
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Specification