US 2015/0091671 A1 · INNER-TUBE WITH OPPOSING SHALLOW-CAVITIES FOR USE IN A COAXIAL POLARIZER

Abstract

A coaxial polarizer is provided. The coaxial polarizer includes an outer-conductive tube, an inner-conductive tube positioned within and axially aligned with the outer-conductive tube, and two dielectric bars each having a flat-first surface. The inner-conductive tube has two shallow-cavities on opposing portions of an outer surface of the inner-conductive tube. The shallow-cavities each have at least one planar area having a cavity length parallel to a Z axis and a cavity width, including a minimum width, perpendicular to the Z axis and to a radial direction of the inner-conductive tube. The flat-first surface has a dielectric length and width that are parallel and perpendicular to the Z axis, respectively. The dielectric length and dielectric width are less than the cavity length and the minimum width, respectively. The two flat-first surfaces of the respective two dielectric bars contact at least a portion of the respective two planar areas of the two shallow-cavities.

Claims25

Dependent claims

A coaxial polarizer comprising:

an outer-conductive tube;
an inner-conductive tube positioned within the outer-conductive tube and axially aligned with the outer-conductive tube, the inner-conductive tube having two shallow-cavities on opposing portions of an outer surface of the inner-conductive tube, the shallow-cavities each having at least one planar area, the at least one planar area having a cavity length parallel to a Z axis and having at least one cavity width that is perpendicular to the Z axis and perpendicular to a radial direction of the inner-conductive tube, the at least one cavity width including a minimum width;
and
two dielectric bars each having a flat-first surface, the flat-first surface having a dielectric length parallel to the Z axis and a dielectric width perpendicular to the Z axis, the dielectric length being less than the cavity length and the dielectric width being less than the minimum width, wherein cross-sections of each of the two dielectric bars taken perpendicular to the Z axis have four respective surfaces in a rectangular shape, and wherein the two flat-first surfaces of the respective two dielectric bars contact at least a portion of the respective two planar areas of the two shallow-cavities.

1 more element

An inner-conductive tube for use in a coaxial polarizer, comprising:

a first shallow-cavity on an outer surface of the inner-conductive tube, wherein the first shallow-cavity has a first-full-planar area, the first-planar area having a first-cavity length parallel to a Z axis and having at least one first-cavity width perpendicular to the Z axis and perpendicular to a first radial direction of the inner-conductive tube, the at least one first-cavity width including a first-minimum width;
and
a second shallow-cavity on the outer surface of the inner-conductive tube, the second shallow-cavity opposing the first shallow-cavity and having a second-full-planar area, the second-full-planar area having a second-cavity length parallel to the Z axis and having at least one second-cavity width perpendicular to the Z axis and perpendicular to a second radial direction of the inner-conductive tube, the at least one second-cavity width including a second-minimum width.

A method of making an inner-conductive tube, the method comprising:

machining a first shallow-cavity having at least one first-planar area on an outer-curved surface of a cylindrical piece aligned to an axial direction;
and
machining a second shallow-cavity having at least one second-planar area on an outer-curved surface of the cylindrical piece, wherein the first-planar area opposes the second planar area.

A coaxial polarizer comprising:

an outer-conductive tube having an inner surface;
an inner-conductive tube positioned within the outer-conductive tube and axially aligned with the outer-conductive tube, the inner-conductive tube having an outer surface;
and
a first dielectric bar having a first surface and an opposing second surface, the first surface attached to a first portion of the inner-conductive tube, wherein the second surface is offset by a first gap from the inner surface of the outer conductive tube,
wherein a third surface of the first dielectric bar is perpendicular to a first tangent of the inner-conductive tube at a line of contact between the third surface of the first dielectric bar and the first portion of the inner-conductive tube,
wherein a fourth surface of the first dielectric bar is perpendicular to a second tangent of the inner-conductive tube at a line of contact between the fourth surface of the first dielectric bar and the first portion of the inner-conductive tube;
and
a second dielectric bar having a fifth surface and an opposing sixth surface, the fifth surface attached to a second portion of the inner-conductive tube, the second portion opposing the first portion, wherein the sixth surface is offset by a second gap from the inner surface of the outer conductive tube,
wherein a seventh surface of the second dielectric bar is perpendicular to a third tangent of the inner-conductive tube at a line of contact between the seventh surface of the second dielectric bar and the second portion of the inner-conductive tube, and
wherein an eighth surface of the second dielectric bar is perpendicular to a fourth tangent of the inner-conductive tube at a line of contact between the eighth surface of the second dielectric bar and the second portion of the inner-conductive tube.

7 more elements

Dependencies are inferred from the claim text.

Inner-tube with opposing shallow-cavities for use in a coaxial polarizer

Life of this patent

Inner-tube with opposing shallow-cavities for use in a coaxial polarizer

Life of this patent

Abstract

Claims25