A multi-directional radiation leaky coaxial cable, including an inner conductor, an insulating layer, an outer conductor and a sheath which are sequentially and coaxially nested from inside to outside. The outer conductor is provided with at least two rows of slotted hole groups, the at least two rows of slotted hole groups are distributed at different angles in a circumferential direction of the outer conductor, and each row of slotted hole group includes a plurality of slotted hole arrays which are periodically arranged along an axial direction of the outer conductor. Each slotted hole array includes a plurality of slotted holes, pitches of the slotted hole groups are the same, and a periodic arrangement difference of two adjacent rows of slotted hole groups in the circumferential direction is half a pitch, such that a phase difference of respective excitation electric fields is 180.

Coaxial video push-cables are disclosed. One embodiment includes a central conductor and a multi-dielectric stack of multiple concentric tubular layers disposed around the central conductor having one or more structural layers and one or more impedance tuning layers where the thickness of materials of each layer are selected to provide a pre-defined elastic modulus and electromagnetic impedance, an electromagnetic shielding layer, and a jacket enclosing the shielding layer, multi-dielectric stack layers, and central conductor.

A coaxial cable includes an inner conductor, an insulation covering the inner conductor, an outer conductor covering the insulation, and a sheath covering the outer conductor. The inner conductor is a compressed conductor including a central element wire and multiple peripheral element wires surrounding the central element wire. The inner conductor has a compressibility of 23.0% or more and 35.0% or less in percentage. The compressibility is calculated from a sectional area S1 and the sectional area S2 of the compressed conductor by Compressibility=[1S2/S1]. The sectional area S1 is calculated from the outside diameter D of the central element wire and the total number n of the central and peripheral element wires by S1=n0.25D.sup.2. The outside diameter of the insulation is 1.25 mm or more and less than 1.75 mm.

A method of manufacturing one or more coaxial assemblies includes forming a first panel member and a second panel member by diffusion bonding sheets formed of a metal material, disposing one or more conductive elements between the first panel member and the second panel member at locations corresponding to the one or more coaxial assemblies, bonding the first panel member to the second panel member to form an assembly structure including a plurality of coaxial assemblies, and separating the one or more coaxial assemblies from the assembly structure. The bonding includes disposing a conductive epoxy, a conductive solder, or a layer formed of the conductive epoxy or the conductive solder and between the first panel member and the second panel member.

A coaxial cable includes a tubular outer conductor, an insulator covered with the tubular outer conductor, and inner conductors disposed in the insulator.

A signal cable for an AC-coupled link, may include: a signal conductor; a dielectric surrounding the signal conductor; and a ground sheath having a conductive layer disposed at least partially around the conductor such that the dielectric is positioned between the ground sheath and the signal conductor, wherein the conductive layer comprises a first portion extending in a first direction along the cable and a second portion extending in a second direction, opposite the first direction, along the cable and further wherein the first and second portions of the conductive layer are separated from each other by a gap, the gap being dimensioned to provide a determined amount of capacitance in series in the ground sheath. The gap may form a complete separation between the first and second portions of the conductive layer.

A cable includes a pair of conductors extending longitudinally and spaced apart from each other, an inner insulating layer circumferentially extending around an outside of the conductors and fixing the conductors, a conductive shielding layer circumferentially extending around an outside of the inner insulating layer, and an insulating sheath extending around an outer peripheral surface of the conductive shielding layer. The insulating sheath is at least one of an extruded layer and a heat shrinkable sleeve.

In some embodiments, a cable can include an electrically conductive inner core. A first insulation layer can be disposed about the inner core. An electrically conductive layer can be disposed about the first insulation layer. A second insulation layer can be disposed about the electrically conductive layer. A first polymer jacket can be disposed about the second insulation layer. The first polymer jacket can include a first layer of armor strength members disposed therein. A second polymer jacket can be disposed about the first polymer jacket. The second polymer jacket can include a second layer of armor strength members disposed therein. An outer polymer jacket can be disposed about the second polymer jacket. At least one of the first polymer jacket, the second polymer jacket, and the outer polymer jacket can be formed from an aliphatic polyketone polymer, an ethylene-propylene copolymer, a polyolefin elastomer, a polypropylene, or a cross-linkable polyethylene.

A coaxial line with a circular inner conductor and a coaxially arranged circular outer conductor has multiple coaxial supports. Each support includes a body having an inner insulating section with an inner bore for the inner conductor and an outer conductive section radially around the inner insulating section. The outer conductive section is electrically connected to the outer conductor.