51results 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.

The invention relates to the technical field of cables, in particular to an ultrahigh-frequency low-loss longitudinal-hole PTFE insulated coaxial cable which comprises a composite conductive bar, a silver-plated copper flat belt, a PTFE insulating layer, a corrugated aluminum belt shielding layer and a sheath layer which are sequentially connected in a sleeved mode from inside to outside. Four identical longitudinal holes are formed in the PTFE insulating layer, and each longitudinal hole penetrates through the PTFE insulating layer along the extension direction of the PTFE insulating layer; each longitudinal hole is in a crescent shape; the longitudinal holes are distributed at equal intervals in the circumferential direction of the PTFE insulating layer; and each longitudinal hole is formed in the edge area, close to the outer ring, of the PTFE insulating layer. According to the cable, the transmission efficiency is improved by reducing signal attenuation, the service life is prolonged by improving the temperature resistance level, the inner conductor and the outer conductor are structurally adjusted to ensure that the cable has certain flexibility, and energy conservation and environmental protection are achieved by reducing the use amount of rare metal.

The present invention provides a cable for high-frequency signal transmission and a manufacturing method thereof. When transmitting high-frequency signals, it is difficult for the cable to attenuate, and even when bending and wiring high-frequency signals in a narrow space, the transmission characteristics are hardly reduced. The cable (1) for high-frequency signal transmission at least includes a conductor (2), an insulator (3) covering the periphery of the conductor (2), a coating layer (4) covering the periphery of the insulator (3), and a sheath (6) covering the periphery of the coating layer (4). Among them, an anti-cracking layer (7) is provided between the insulator (3) and the coating layer (4). The anti-cracking layer (7) is arranged in contact with the insulator (3) and has a coating layer (4) on its outer surface. The anti-cracking layer (7) is composed of a resin film (71). In response to the bending of the insulator (3), it bends while relatively moving in the cable length direction, thereby suppressing cracking of the coating layer (4).

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.

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.

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

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.

A fire resistant radiating coaxial cable that employs a high-silica fiberglass yarn spacer is described. The yarn material has mass fraction of silica (SiO2) between 95.0% and 96.5%, a mass fraction of aluminum oxide (Al2O3) greater than 3%, and a mass fraction of calcium oxide (CaO) less than 0.5%. The yarn can be wound in a low-helix-angle helix around the center conductor such that less than half fills the annular space between it and the outer conductor. The cable is configured to maintain a relatively coaxial relation between a center conductor and an outer conductor under intense fire conditions.

An article of manufacture comprising a first section having a first dielectric material and a second section having a second dielectric material and provided on an outer surface of the first section. The second dielectric material of the second section is more flexible than the first dielectric material of the first section, and the second section comprises elements of an organic material located partially on an outer surface of the second section. A coaxial cable using the article of manufacture and a method of manufacturing of the article are also disclosed.

A coaxial cable includes a center conductor, a dielectric coating applied to the center conductor forming an insulator surrounding the center conductor, a metallization layer applied to the insulator forming a cable shield surrounding the insulator, and an outer jacket covering the cable shield, wherein the coaxial cable has a wire gauge of 54 AWG or smaller. A method of manufacturing a coaxial cable includes providing a center conductor, coating the center conductor with a dielectric coating to form an insulator surrounding the center conductor, covering the insulator with a metallization layer to form a cable shield surrounding the insulator, and covering the cable shield with an outer jacket, wherein the coaxial cable has a wire gauge of 54 AWG or smaller.

The invention provides a coaxial cable and a device testing apparatus which can be arranged at high density. The coaxial cable (40) is provided with a cylindrical outer conductor (45), an insulating part (44) covered by the outer conductor (45), and a plurality of inner conductors (41) arranged in the insulating part (44).

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.

The invention relates to a conductor arrangement (7a, 7b) for transmitting high-frequency signals, in particular an insulated socket, preferably for a contact element (10) arranged in a test device (100), the conductor arrangement (7a, 7b) having: at least one inner conductor (1a, 1b) for transmitting high-frequency signals; a second conductor (2) separate from the inner conductor (1a, 1b), in particular an outer conductor surrounding the inner conductor; and at least one insulating element (3a, 3b) between the first conductor and the second conductor, the insulating element (3a, 3b) surrounding the inner conductor (1a, 1b) at least in sections, the at least one insulating element (3a, 3b, 3c) comprising at least two sub-regions (4a, 4b) having different dielectric constants.

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.

A radio head cable may include an inner conductor and an outer conductor coaxially arranged around the inner conductor. The inner conductor may have a first direct current resistance and a cross-sectional area of at least 5.0 square millimeters. The outer conductor may have a second direct current resistance equal to or less than the first direct current resistance. A first dielectric layer including polyvinylchloride may be positioned between the inner conductor and the outer conductor. A second dielectric layer including polyvinylchloride may be positioned around the outer conductor, and a third dielectric layer including nylon may be positioned around the second dielectric layer.

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

To provide a coaxial cable capable of being disposed with high density.SOLUTION: A coaxial cable 40 comprises a tubular outer conductor 45, an insulator 44 covered by the outer conductor 45, and a plurality of inner conductors 41 disposed within the insulator 44.SELECTED DRAWING: Figure 3

A cable (1) includes a first retimer (10a), a second retimer (10b), and a coaxial line (20). Each of the first retimer (10a) and the second retimer (10b) includes: a differential-to-single-ended signal converter (11) that receives an input of a differential signal and outputs a single-ended signal; and a single-ended-to-differential signal converter (12) that receives an input of a single-ended signal and outputs a differential signal. The first retimer (10a) and the second retimer (10b) are connected via the coaxial line (20).

[Problem] To provide a transmission line having excellent transmission characteristics. [Solution] Provided is a transmission line comprising a conductor and a dielectric layer, wherein the transmission line is characterized in that the dielectric layer has a plurality of air bubbles and a plurality of needle-shaped nucleating agents and, when nucleating agents longer than the median length are classified as a long nucleating agent group and nucleating agents shorter than the median length are classified as a short nucleating agent group based on the observed length of the plurality of needle-shaped nucleating agents observed in a cross-section of the dielectric layer, the average length of nucleating agents of the long nucleating agent group is 3.5 times or less the average length of nucleating agents of the short nucleating agent group.

The present invention provides a coaxial cable, a method for manufacturing the coaxial cable, and a cable assembly that are difficult to produce a shielding effect reduction and are difficult to produce a sharp attenuation within a predetermined frequency band. The coaxial cable (1) includes: a conductor (2); an insulator (3) covering the periphery of the conductor (2); a shielding layer (4) having a transverse winding shield in which a plurality of metal wires (41) are spirally wound around the periphery of the insulator (3); and a sheath (5) covering the periphery of the shielding layer (4). The insulator (3) has recesses (3a) fitting with the plurality of metal wires (41) on the surface of the portion in contact with the plurality of metal wires (41). The portion of the shielding layer (4) in contact with the insulator (3) in the circumferential direction of the plurality of metal wires (41) fits with the recesses (3a) of the insulator (3), and the plurality of metal wires (41) adjacent to each other in the circumferential direction of the shielding layer (4) are in surface contact with each other.

The invention relates to a low-impedance high-current coaxial line (1) for a plasma process system (10), comprising: a) a tubular heat-conducting electrical insulator (2), for example made of ceramic, b) an electrical outer conductor (3), which is arranged on the insulator in the form of an outer layer, and c) an electrical inner conductor (4), which is arranged in the insulator in the form of an inner layer, the inner diameter and the outer diameter of the insulator (2) are dimensioned in such a way that a line impedance of < = 20 Omega can be achieved, e) wherein the low-impedance high-current coaxial line (1) is designed to be connected to the impedance adaptation circuit (6) and the plasma process component (7), and f) wherein the low-impedance high-current coaxial line (1) is designed to supply HF power to the plasma process component (7) by means of an HF power source (9).

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.

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 coaxial cable for nuclear power plants. More specifically, it includes an inner conductor disposed at the very center of the cable, an insulating layer formed of a foamed material that is arranged to surround the outer circumference of the inner conductor and forms a plurality of porous cells, and a sheath layer arranged to surround the outer circumference of the insulating layer. The coaxial cable for nuclear power plants is characterized in that the activation energy of the insulating layer is in the range of 2.06 eV to 2.84 eV. Thereby, it is possible to provide a coaxial cable for nuclear power plants that can maintain a certain level of performance even after a defined lifespan has passed.

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).