19results about "Cable insulation construction" patented technology

The invention relates to a high-temperature-resistant and radiation-resistant armored coaxial radio frequency cable, which comprises a copper core, a first stainless steel tube, a silicon dioxide micro powder layer, a second stainless steel tube, a copper tube and an outer shielding protection tube which are sequentially arranged from inside to outside, the silicon dioxide micro powder layer is filled in a gap between the first stainless steel tube and the second stainless steel tube, the copper tube wraps the second stainless steel tube, and the outer shielding protection tube wraps the copper tube. The armored coaxial radio frequency cable is small in outer diameter, has good radiation resistance, high temperature resistance and high signal transmission stability, and can meet the insulation requirements of high-temperature scenes such as nuclear power and the like.

A high-temperature resistant cable for a mobile communication base station comprising, in succession, an inner conductor, a PTFE insulating layer, an outer conductor, and a sheath, wherein the PTFE insulating layer has at least one hollow channel extending in a direction of extension of the inner conductor, wherein the outer conductor is a spiral copper tube, wherein the PTFE insulating layer is formed by extruding and sintering a pasty PTFE material to form a PTFE insulating layer blank surrounding the inner conductor, wherein the extruded PTFE insulating layer blank is dried at a temperature of 100 to 250 °C, and subsequently the dried PTFE insulating layer blank is sintered and solidified at a temperature of 400-480 °C, and wherein nano-copper oxide is added to the pasty PTFE material.

Disclosed is an armored cable assembly including a core having a notched assembly tape about a plurality of conductors. A metal sheath surrounds the core.

The present invention provides a composite cable that improves high-frequency characteristics. The composite cable (1) has a signal transmission cable (2), a pair of power lines (3), an integral braided shielding layer (5), and a sheath (6); the signal transmission cable (2) has a pair of signal lines (21) arranged parallel to each other in the cable length direction and arranged to contact each other, and a shielding layer (22) integrally covering the pair of signal lines (21); the pair of power lines (3) are arranged to contact each other and to contact the shielding layer (22); the integral braided shielding layer (5) integrally covers the periphery of the cable core (4) formed by the signal transmission cable (2) and the pair of power lines (3); the sheath (6) covers the periphery of the integral braided shielding layer (5); wherein the integral braided shielding layer (5) is arranged along the outline of the shielding layer (22) and is tightly connected to the shielding layer (22).

A microwave device capable of increasing an amount of heat generated at the tip end thereof. The microwave device having a central conductor that transmits microwaves, an insulator covering the central conductor, and an external conductor covering the insulator. The central conductor is exposed to the outside from a tip end of a microwave irradiation part for the first time, and an externally exposed part of the exposed central conductor is bent toward the base end side of the microwave emitting unit so as to be along the external conductor.

An electrical transmission line cable suitable for a variety of applications including fishing lines in video fishing systems, etc. The electrical transmission line cable has a first conductor and a second conductor forming an electrical transmission line, a jacket including the first conductor and the second conductor, and a transmission line primary dielectric element separating the first conductor and the second conductor, the primary dielectric element being at least one of a woven yarn, a fiber yarn, or a monofilament. The electrical transmission line can be in a balanced or unbalanced configuration.

Electrical cables are disclosed can include at least one electrical conductor, an inner electrical insulator that surrounds the at least one electrical conductor, and an electrical shield disposed about the inner electrical insulator. The electrical cables can include an electrically conductive material disposed between adjacent layers of the electrical cable. In one example, an electrical coating can be disposed in the electrical shield, for instance, in regions of overlap. Flowable electrically conductive materials are also disclosed that can flow into gaps during operation of the electrical cable.

The present disclosure relates to a coaxial cable for nuclear power plants, and more specifically, relates to a coaxial cable for nuclear power plants, which includes an inner conductor arranged at a center of a cable, an insulating layer arranged in a form of surrounding an outer periphery of the inner conductor, and formed of a foaming material forming many porous cells, and a sheath layer arranged in a form of surrounding an outer periphery of the insulating layer. Activation energy of the insulating layer is within a range of 2.06 eV to 2.84 eV. Accordingly, it is possible to provide the coaxial cable for nuclear power plants which can maintain a certain level of performance even after the elapse of a specified lifespan.

To provide a signal transmission cable whose transmission characteristics are not easy reduced when bent.SOLUTION: A signal transmission cable 1 comprising a conductor 2, an insulator 3 covering the circumference of the conductor 2, a shield layer 4 covering the circumference of the insulator 3, and a sheath 5 covering the circumference of the shield layer 4, wherein between the insulator 3 and the shield layer 4, a plating base layer 6 is provided so as to cover the circumference of the insulator 3, the shield layer 4 has a plating layer 41 formed so as to be in contact with an outer peripheral surface of the plating base layer 6 and so as to cover the plating base layer 6, and the surface roughness of the outer peripheral surface of the plating layer 41 is smaller than the surface roughness of an inner peripheral surface of the plating layer 41.SELECTED DRAWING: Figure 1

The invention relates to a composite insulation structure for a leaky coaxial cable and a preparation method thereof. The cable comprises an insulating layer inner layer which wraps a cable inner conductor, and the insulating layer inner layer is made of polytetrafluoroethylene; the insulating layer inner layer is coated with the insulating layer middle layer, and the insulating layer middle layer is made of polyether-ether-ketone; the insulating layer middle layer is coated with the insulating layer outer layer, and the insulating layer outer layer is made of polypropylene. The leaky coaxial cable can improve the heat resistance and reduce the dielectric loss, optimizes the mechanical properties, prolongs the service life, is suitable for high-frequency signal transmission in a complex environment, is beneficial to recovery and reprocessing due to the use of the thermoplastic material, and accords with the environmental protection trend.

The present application provides a coaxial cable which maintains stable high-frequency transmission performance and has a hollow core with improved side pressure strength compared with the existing structure. In the hollow core (1) constituting the coaxial cable (10), the inner annular portion (2) insulatingly covering the inner conductor (12), the plurality of rib portions (3) extending radially from the inner annular portion (2), and the outer annular portion (4) connected to the outer ends of the rib portions (3) are an integral structure of thermoplastic resin, have three or more void portions (5) surrounded by the inner annular portion (2), the rib portions (3), and the outer annular portion (4), the outer side reinforcing portions (7) are formed on both sides of the outer ends of the rib portions (3), and the size ratio of the minimum value (W1) of the rib width of the rib portions (3) to the maximum value (W2) of the rib width of the rib portions (3) is in the range of 1:1.6 to 1:3.0.

The invention provides a coaxial cable, the coaxial cable comprises an inner conductor, a medium tube and an outer conductor which are sequentially sleeved from inside to outside, the medium tube is provided with a plurality of receding grooves, the receding grooves are formed by sinking towards the inner conductor from the periphery of the medium tube, and the receding grooves are sequentially arranged along the circumferential direction of the medium tube. According to the coaxial cable disclosed by the invention, the plurality of receding grooves are formed in the medium tube, and the flexibility of the coaxial cable can be effectively optimized through the plurality of receding grooves, so that the coaxial cable can be more easily adapted to a bending form when being bent under the action of external force, and good deformability is shown; the damage risk caused by bending of the coaxial cable is greatly reduced, the stress concentration phenomenon borne by the dielectric tube and the whole cable structure during bending is reduced, the service life of the coaxial cable is prolonged, the reliability and stability of the coaxial cable in practical application are improved, and the service life of the coaxial cable is prolonged. And a powerful technical support is provided for the use of the coaxial cable in a complex environment.

The present invention relates to a low-impedance, high-current coaxial line (1) for a plasma processing system (10), comprising: a) a tubular, thermally conductive electrical insulator (2), e.g., made of ceramic; b) an electrical outer conductor (3) disposed on the insulator in the form of an outer layer; and c) an electrical inner conductor (4) disposed within the insulator in the form of an inner layer. d) the inner and outer diameters of the insulator (2) are sized to achieve a line impedance of 20 ohms or less. e) the low-impedance, high-current coaxial line (1) is designed to be connected to an impedance matching circuit (6) and a plasma processing assembly (7). f) the low-impedance, high-current coaxial line (1) is designed to supply HF power to the plasma processing assembly (7) via an HF power source (9).

The present invention provides a coaxial cable and a cable assembly which are difficult to produce a reduction in shielding effect and difficult to produce a sharp attenuation in a predetermined frequency band. A shield layer (4) has a transverse-wound shield portion (41) in which a plurality of metal wires (411) are spirally wound so as to cover the periphery of an insulator (3), and a one-plating portion (42) formed by hot-dip plating which covers the periphery of the transverse-wound shield portion (41), the shield layer (4) having a separation portion (46) in which circumferentially adjacent metal wires (411) are separated from each other, in the separation portion (46) existing at a local site in the cable length direction, having a non-joining portion (44) in which the adjacent metal wires (411) are not joined to each other by the one-plating portion (42), the length of the non-joining portion (44) in the cable length direction being shorter than the winding pitch of the transverse-wound shield portion (41).

The techniques described herein relate to radiating cables. An example radiating coaxial cable includes a first conductor, a dielectric disposed over the first conductor, a second conductor comprising a plurality of slots, the dielectric being disposed between the first and second conductors, and a tape disposed over the second conductor configured to seal the plurality of slots, the tape having a thickness in a range of 0.5 to 2.0 mils.

A cable includes an inner conductor and a dielectric layer extending around the inner conductor. The dielectric layer includes a linearly-stretched polypropylene film having a porous structure that includes a plurality of pores that extend through a thickness of the linearly-stretched polypropylene film. The dielectric layer includes air molecules trapped within the pores of the linearly-stretched polypropylene film such that the dielectric layer includes polypropylene and air. The cable includes an outer conductor extending around the dielectric layer.

Electrical cables are disclosed can include at least one electrical conductor, an inner electrical insulator that surrounds the at least one electrical conductor, and an electrical shield disposed about the inner electrical insulator. The electrical cables can include an electrically conductive material disposed between adjacent layers of the electrical cable. In one example, an electrical coating can be disposed in the electrical shield, for instance, in regions of overlap. Flowable electrically conductive materials are also disclosed that can flow into gaps during operation of the electrical cable.

A low-impedance, high-current coaxial line for a plasma process system includes a tubular thermally conductive electric insulator; an electric outer conductor which is arranged on the insulator in the form of an outer layer; and an electric inner conductor which is arranged in the insulator in the form of an inner layer. The inner and outer diameters of the insulator are dimensioned such that the insulator is configured to have a line impedance of ≤20Ω. The low-impedance, high-current coaxial line is configured to connect to an impedance adaptation circuit and a plasma process assembly. The low-impedance, high-current coaxial line is configured to supply the plasma process assembly with high frequency (HF) power by means of an HF power supply.

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.