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47results about How to "Guaranteed signal transmission performance" patented technology

Optical fibre plug, optical fibre socket and optical fibre connector

The invention provides an optical fibre connector, comprising an optical fibre plug and an optical fibre socket, wherein the optical fibre plug comprises a first body and a first condenser lens; the first body comprises a first end face and a second end face; a first guide hole is disposed on the first end face; a first containing groove, a first location groove and a mounting groove are disposed on the second end face; the optical fibre socket comprises a second body and a second condenser lens; the second body comprises a third end face and a fourth end face; a second guide hole is disposed on the third end face; a second containing groove, a second location groove and a location column are disposed on the fourth end face; the first and second condenser lenses respectively comprise a side face which is provided with a location block; the first and second condenser lenses are respectively contained in the first and second containing grooves; and the location blocks are blocked in the first and second location grooves; the optical fibre plug is connected to the optical fibre socket by the mounting groove and the location column. The bodies are connected to the condenser lenses by the location grooves and the location blocks; and the concentric alignment precision of the guide holes and the condenser lenses is improved.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1

Mineral insulation signal cable and method for manufacturing the same

This invention relates to a mineral signal insulation cable including a conductor, an insulator and a jacket characterizing that all of the three are inorganic objects, the conductor is a core of twist copper wires, the insulator is pure MgO powder added with silicon oil and the jacket is a copper jacket formed by continuously welding and the MgO powder is set in the slot between the conductor and the jacket, the process of which is simple and advanced, the outer diameter is small and it's not necessary to protect it with pipes, good signal and phone communication can be kept in fire since it's smokeless and nonpoisonous.
Owner:BAOSHENG SCI & TECH INNOVATION

Thick high-conductivity multilayer graphene film and RFID electronic label of impedance loaded shape

The invention discloses a thick high-conductivity multilayer graphene film and an RFID electronic label of an impedance loaded shape. A graphite film precursor including polyimides, polyamide and oxidized graphene forms a film in a scraping or screen printing method, and a graphene film precursor is prepared by hot press molding at the temperature of 50-180 DEG C; the graphene film precursor is placed in a high temperature furnace, heat treatment at the low temperature of 200-500 DEG C for 1-2 hours, heat treatment at 200-500 DEG C for 2-5 hours and heat treatment at 2000-2800 DEG C for 2-5 hours are carried out on the graphene film precursor successively in a cyclic way, and the graphene film precursor is then cooled for 12 hours slowly; and roll forming is carried out. Compared with a traditional metal material, the prepared RFID electronic label has similar functions, a signal transmission performance is ensured, the label can be produced in large scale to reduce the cost, and unique properties as high temperature resistance, corrosion resistance, flexibility and environmental protection of a graphene material are included.
Owner:WUHAN UNIV OF TECH

Coaxial radio frequency cable run-through sealing part

The invention provides a coaxial radio frequency cable run-through sealing part. The sealing part comprises a circular adhesive pouring cylinder, a cable fixing board, an isolation assembly and cables, wherein more than two cable fixing holes for fixing and sealing cables are formed in the cable fixing board; the cable runs through the cable fixing holes and the adhesive pouring cylinder to enter a sealed container; the outer sheath on one section, in the middle of the adhesive pouring cylinder, of the corresponding cable is peeled off to form an adhesive permeating section; the exterior of the adhesive permeating section is surrounded by the isolation assembly; an adhesive inlet hole is formed in the isolation assembly; one end of the adhesive pouring cylinder is connected with the cable fixing board through a second flange; and the adhesive pouring cylinder is full of liquid sealant for sealing and blocking slot leakage among cables and the internal slot leakage of cable external conductors. According to the coaxial radio frequency cable run-through sealing part, the problem existing in sealing multiple cables led out of the sealed container is solved; meanwhile, the cable inner sealing and cable outer sealing are realized; and therefore, the coaxial radio frequency cable run-through sealing part has the advantages of no extra attenuation in signal transmission, simple structure, and reliable sealing performance.
Owner:INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF

High density flexible substrate manufacturing method

ActiveCN107041078AHigh impedanceCurrent transfer capability limitationLithography/patterningFlexible printed circuitsHigh densityCopper foil
The invention provides a high density flexible substrate manufacturing method. The high density flexible substrate manufacturing method comprises steps that a first copper foil layer of a double-sided copper-clad first flexible printed circuit board layer is removed, and the first surface of the first flexible printed circuit board layer is exposed; a conductive line is formed on the first surface of the first flexible printed circuit board layer; a second flexible printed circuit board layer is connected with the conductive line in an attached manner; the second copper foil layer of the first flexible printed circuit board is removed; and at least one bonding pad window is formed in the first flexible printed circuit board layer and the second flexible printed circuit board layer to expose a bonding pad.
Owner:NAT CENT FOR ADVANCED PACKAGING

Signal transmission method, device and terminal

The invention discloses a signal transmission method, a signal transmission device and a terminal. The method is implemented in a terminal, and the terminal comprises a first WIFI antenna and a secondWIFI antenna which are used for transmitting a WIFI 5G signal, and an air interface antenna used for transmitting a 5G NR signal. The method comprises the steps of determining an air interface environment channel of a current transmission signal of the terminal; under the condition that the air interface environment channel comprises an N79 channel supporting an N79 frequency band in the 5G NR, transmitting a 5G NR signal through an air interface antenna, and transmitting a WIFI 5G signal through a second WIFI antenna; and under the condition that the air interface environment channel does not comprise the N79 channel, transmitting the 5G NR signal through the air interface antenna, and transmitting the WIFI 5G signal through the first WIFI antenna.
Owner:VIVO MOBILE COMM CO LTD

Structure of package substrate and manufacturing method of package substrate

The invention discloses a structure of a package substrate and a manufacturing method of the package substrate. The package substrate comprises a circuit layer, at least one conductive column and a dielectric layer, wherein the circuit layer is provided with at least one connecting pad; the conductive columns are formed on the connecting pads; each conductive column is provided with a first surface, a second surface and a side wall connected with the first surface and the second surface; the area of each second surface is greater than that of the corresponding first surface; each second surface is combined to the corresponding connecting pad; and the dielectric layer covers the circuit layer and wraps the conductive columns.
Owner:ASE SHANGHAI

Solid medium for filter and surface metallization process thereof, and dielectric filter

The invention discloses a solid medium for a filter. The solid medium comprises a solid medium body and is characterized by further comprising a conductor structure arranged on the surface of the solid medium body, and the conductor structure at least comprises a first conductor metal layer for signal transmission and a second conductor metal layer for surface welding of a layer; the first conductor metal layer is located on the surface of the solid medium body; the second conductor metal layer is located on the surface of the first conductor metal layer; and the first conductor metal layer and the second conductor metal layer are conductor layers made of different metal materials. The invention further discloses a surface metallization process of the solid dielectric and a dielectric filter. According to the solid medium disclosed by the invention, by arranging a multi-conductor-layer structure, various metals can be replaced, the conductor layer actually used for signal transmissionis protected from being damaged while the cost is reduced, and the signal transmission performance of the solid medium is ensured.
Owner:上海德门信息技术有限公司

Radio frequency thimble for production test and radio frequency test system

The invention provides a radio frequency thimble for production test and a radio frequency test system, which are used for being connected with a test seat in a matching way, the radio frequency thimble comprises a shell, a probe, a light conduction piece and a color identification sensor; the probe is positioned in the cavity of the shell; an accommodating hole is formed in the probe; the light conduction piece is arranged in the accommodating hole; the first end of the light conduction piece is exposed at the end part of the probe; the second end of the light conduction piece is connected with the color recognition sensor, the light conduction piece is used for transmitting reflected light of the reflecting surface close to the end part of the probe to the color recognition sensor, and the color recognition sensor is used for recognizing the color of the reflected light and judging whether the end part of the probe is aligned to a terminal with a preset color of the test seat or notaccording to the color of the reflected light. The radio frequency thimble for production test and the radio frequency test system aim to solve the problem that the deviation of the radio frequency thimble is difficult to detect in the production test process in the prior art.
Owner:SPREADTRUM COMM SHENZHEN CO LTD

Manufacturing method of high-density flexible substrate

ActiveCN107041078BHigh impedanceCurrent transfer capability limitationLithography/patterningFlexible printed circuitsHigh densityCopper foil
The invention provides a high density flexible substrate manufacturing method. The high density flexible substrate manufacturing method comprises steps that a first copper foil layer of a double-sided copper-clad first flexible printed circuit board layer is removed, and the first surface of the first flexible printed circuit board layer is exposed; a conductive line is formed on the first surface of the first flexible printed circuit board layer; a second flexible printed circuit board layer is connected with the conductive line in an attached manner; the second copper foil layer of the first flexible printed circuit board is removed; and at least one bonding pad window is formed in the first flexible printed circuit board layer and the second flexible printed circuit board layer to expose a bonding pad.
Owner:NAT CENT FOR ADVANCED PACKAGING CO LTD

Packaging substrate and manufacturing method thereof

The invention discloses a packaging substrate, and a manufacturing method of the packaging substrate, wherein the packaging substrate comprises a first dielectric layer; at least one first conductive pole which is formed in the first dielectric layer; a seed layer which is covered on an upper surface of the first dielectric layer and is provided with at least one opening corresponding to the first conductive pole; and a first circuit layer which is formed on the seed layer, electrically connected with the first conductive pole through an opening and is arranged corresponding to the seed layer.
Owner:ASE SHANGHAI

Information module with shielding function in network system

The invention relates to an information module with a shielding function in a network system, which comprises a base, a socket and a line pressing cover, wherein the socket is arranged on the base; the line pressing cover is arranged between the base and the socket; a through hole is arranged in the line pressing cover; a branching rib is arranged on the through hole and divides the through hole into two sub through holes; and data cables are respectively arranged in the two sub through holes in a penetrating manner and are connected with a socket. The information module with the shielding function is adopted, the branching rib on the through hole divides the through hole into the two sub through holes, and the data cables are respectively arranged in the two sub through holes in the penetrating manner, so that a space between each two cables is ensured, the crosstalk of signals is avoided; when the information module with the shielding function is arranged, the performances of the information module with the shielding function cannot be affected by a construction technology or a construction environment, and the signal transmission quality and the overall performance of the information module are ensured; and the information module with the shielding function in the network system has a simple structure and broader application range and is low in cost.
Owner:SIMON ELECTRIC CHINA

Robot with light emitting piece

PendingCN108098839ABrightness is not dazzlingEasy to operateManipulatorLight-emitting diodeBrightness perception
The invention discloses a robot with a light emitting piece. The robot comprises a robot body, and a light emitting mechanism arranged on the robot body; the light emitting mechanism comprises a lightsource and a light homogenizing piece; and a light way of the light source is displayed in an external environment of the robot body after passing through the light homogenizing piece. The brightnessof the light source on the robot is not dazzling, so that eyes of human bodies are protected; and the brightness of the light source is weakened, so that the human bodies can directly look at the light source arranged on the robot, the human bodies are convenient to directly operate or observe the robot, convenience is brought for use and operation of the robot, the humanized, scientific and reasonable design of the robot is improved, and the user experiences of the human bodies and the charm of the robot are improved.
Owner:SHANGHAI MROBOT TECH CO LTD

Optical cable branch line protection structure

The present invention discloses an optical cable branching protection structure. The optical cable branching protection structure comprises: a main optical cable, a plurality of sub-optical cables formed by branching the main optical cable, and a deconcentrator sleeved at the outside of the branching of the main optical cable and a plurality of sub-optical cables. A junk ring bush compressing a coating layer sleeves the outside of the main optical cable section, and the sub-optical cable sections have no a junk ring bush. Aramid fibers are located between the coating layer and the steel pipe, and the movement of the aramid fibers may be effectively utilized to make optical fibers in the main optical cable have enough free activity space, so that the optical fibers have enough length to satisfy various usage environment and the optical performance and signal transmission effect of the optical fibers are ensured. According to the invention, single core fibers and aramid fibers are located in the steel pipe, the steel pipe and the coating layer are integrated into one body to fix with a thermoplastic pipe, and the length of the outer coating layer may be determined; and when a branching is made, length of each single core sub-optical fiber is controllable, and the length consistency of the branch sub-optical fiber may be effectively ensured.
Owner:SHENZHEN ACE ARMORED CABLE CO

Communication cable with low smoke, flame retardance and water resistance

The invention discloses a communication cable with low smoke, flame retardance and water resistance, belonging to the technical field of cables. The communication cable comprises a cable core and a sheath. The communication cable is characterized in that the cable core is formed by double-twisted pairs twisted by a plurality of pairs of insulating wire cores; water-resistant fillers are arranged in gaps among the double-twisted pairs; each insulating wire core is formed by extruding a polyolefin insulating layer on each conductor; the double-twisted pairs are lapped with aluminium-plastic composite belts; the conductors are copper-clad aluminium solid core wires; the outer surface of the cable core is wrapped with a tin-plated copper wire weaving layer which is lapped with a polyester-belt lapping layer; and the polyester-belt lapping layer is externally extruded with the low-smoke and halogen-free polyolefin sheath. The communication cable disclosed by the invention has the advantages that the structure is reasonable and simple, the production and the manufacture are easy, the transmission performance of communication signals of the cable is good, and the signal transmission is stable; and the cable core is provided with the water-resistant fillers, the aluminium-plastic comprehensive sheath is adopted and is made of low-smoke and halogen-free polyolefin, so that not only are the flame retardance, the water resistance and the moisture resistance realized, but also the mechanical performance of the cable is enhanced.
Owner:沈裕

Automatic agricultural machine hidden positioning antenna based on Beidou positioning

The invention provides an automatic agricultural machine hidden positioning antenna based on Beidou positioning, and relates to the field of agricultural machine positioning antennas. An external connection wire hole is formed in the rear side of the outer shell, eight bolts are installed on the periphery of the front end of the outer shell in a surrounding mode, and the outer shell is embedded inthe outer wall of the agricultural machine through the bolts. The inner shell is located in the outer shell, an inner connecting wire hole is formed in the rear side of the inner shell, and the innerconnecting wire hole in the rear side of the inner shell is communicated with the outer connecting wire hole in the rear side of the outer shell; and the inner walls of the left side and the right side of the inner shell are each provided with an inner sliding groove, and the inner walls of the left side and the right side of the front end of the inner shell are each provided with a rotating groove. The telescopic frame drives the antenna assembly plate to move to the outside of the front end of the inner shell, so that the Beidou antenna mounted at the front end of the antenna assembly plateis completely exposed to the outside and is prevented from being shielded by an agricultural machine body, the receiving and transmitting effects of the Beidou antenna are guaranteed, and the signalreceiving stability of the Beidou antenna is improved.
Owner:无锡湖山智能科技有限公司

A low-latency multi-node real-time wireless network transmission method based on radio frequency forwarding

The invention discloses a low-latency multi-node real-time wireless network transmission method based on radio frequency forwarding. The method first divides transmitting terminal nodes into areas, configures radio frequency forwarding relays for each area, and then determines the transmitting terminal and radio frequency In the next transmission frequency band, the frequency division multiplexing method is used to configure the transmission frequency point for each node and each area, and then the three-level transmission network composed of the transmitting terminal, the radio frequency forwarding relay and the multi-channel parallel receiving base station is used for real-time signal transmission. The real-time wireless network transmission method disclosed by the invention can realize the real-time wireless transmission of multi-node data under nearly zero delay, and reduces the network hardware overhead while ensuring the signal transmission performance, and has practicability.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS

Water-blocking communication cable

The invention discloses a water-blocking communication cable which comprises a cable core and a sheath, and is characterized in that the cable core consists of a twisted pair which is stranded by multiple pairs of insulation wire cores, a water-blocking filler is arranged in a gap of the twisted pair, the insulation cores are formed by lapping polyolefin insulation layers on a conductor, a composite aluminium-plastics tape is lapped on the twisted pair, the conductor is a copper clad aluminum solid core wire, a polyester tape taped covering is lapped on the outer surface of the cable core, and the polyolefin aluminum plastic sheath is wrapped outside the polyester tape taped covering. The water-blocking communication cable has the advantages of reasonable and simple structure, easy manufacturing, good transmission performance of a cable communication signal, and stable signal transmission; and two layers of polyester tapes are overlapped and lapped on the cable core, thus the heat-resistance quality of the cable is improved. The cable core is provided with the water-blocking filler, the aluminum plastic comprehensive sheath is adopted and is made of linear low density polyethylene, and thus the water-blocking communication cable can be water-blocking and damp-proof and is enhanced in the mechanical property.
Owner:沈裕

Low-delay multi-node real-time wireless network transmission method based on radio frequency forwarding

The invention discloses a low-delay multi-node real-time wireless network transmission method based on radio frequency forwarding, which comprises the following steps of: firstly, dividing a transmitting terminal node into regions, configuring a radio frequency forwarding relay for each region, then respectively determining transmitting frequency bands of a transmitting terminal and the radio frequency forwarding relays; configuring the transmitting frequency points for each node and each area in a frequency division multiplexing mode; and then performing real-time signal transmission by using a three-stage transmission network consisting of the transmitting terminal, the radio frequency forwarding relay and the multi-channel parallel receiving base station. According to the real-time wireless network transmission method disclosed by the invention, real-time wireless transmission of multi-node data can be realized under the condition of approaching zero delay, the signal transmission performance is ensured, the network hardware overhead is reduced, thereby achieving the practicability.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS

Solid dielectric for filter and its surface metallization process and dielectric filter

The invention discloses a solid medium for a filter, which includes a solid medium body, and is characterized in that it also includes a conductor structure arranged on the surface of the solid medium body, and the conductor structure at least includes a first A conductive metal layer and a second conductive metal layer for the surface soldering layer; the first conductive metal layer is located on the surface of the solid medium body; the second conductive metal layer is located on the surface of the first conductive metal layer; the first conductive metal layer layer and the second conductor metal layer are conductor layers of different metal materials. The invention also discloses a solid medium surface metallization process and a dielectric filter. The solid medium of the present invention realizes the replacement of various metals by setting a multi-layer conductor layer structure, reduces the cost and protects the conductor layer actually used for signal transmission from damage, thereby ensuring the signal transmission performance of the solid medium.
Owner:上海德门信息技术有限公司

Communication cable

The invention discloses a communication cable, belonging to the technical field of cables. The communication cable comprises a cable core and a sheath. The communication cable is characterized in that the cable core is formed by double-twisted pairs twisted by a plurality of pairs of insulating wire cores; water-resistant fillers are arranged in gaps among the double-twisted pairs; each insulating wire core is formed by extruding a polyolefin insulating layer on each conductor; the double-twisted pairs are lapped with aluminium-plastic composite belts; the conductors are copper-clad aluminium solid core wires; the outer surface of the cable core is wrapped with a tin-plated copper wire weaving layer which is lapped with a polyester-belt lapping layer; and the polyester-belt lapping layer is externally extruded with the low-smoke and halogen-free polyolefin sheath. The communication cable disclosed by the invention has the advantages that the structure is reasonable and simple, the production and the manufacture are easy, the transmission performance of communication signals of the cable is good, and the signal transmission is stable; the cable core is provided with the water-resistant fillers, the aluminium-plastic comprehensive sheath is adopted and is made of low-smoke and halogen-free polyolefin, so that not only are the flame retardance, the water resistance and the moisture resistance realized, but also the mechanical performance of the cable is enhanced.
Owner:沈裕

Internet of things gateway selection method and device based on signal transmission security management

The embodiment of the present application discloses a method and device for selecting an Internet of Things gateway based on signal transmission security management. The technical solution provided by the embodiment of the present application receives the signal transmission performance information reported by each IoT gateway through the cloud, selects an IoT gateway as the designated gateway based on the signal transmission performance information, binds the designated gateway to the IoT terminal, and constructs a corresponding Binding relationship, and send the binding relationship and the corresponding session key to the designated gateway, the binding relationship includes the IP information of the designated gateway and the IoT terminal, the session key includes the signal encryption key and the signal decryption key, and the designated gateway Receive the binding relationship and the session key, forward the binding relationship and the session key to the IoT terminal, and perform signal transmission with the IoT terminal based on the binding relationship and the session key. By adopting the above-mentioned technical means, the signal transmission effect of the Internet of Things system can be optimized, and the signal transmission security and signal transmission performance between the Internet of Things terminal and the gateway can be guaranteed.
Owner:广州技象科技有限公司

Notebook computer

The invention discloses a notebook computer. The computer host comprises a host body. The host body comprises a fan and an antenna structure. The antenna structure comprises an antenna support and anantenna body formed on the antenna support. The antenna structure is arranged at an air outlet of the fan, an air outlet channel opposite to the air outlet of the fan is formed in the antenna support,and the antenna body comprises a radiation part, a grounding part and a feeding point. According to the notebook computer. The position of the screen end cannot be occupied, so that the narrow-framefull-screen and full-metal design of the screen end can be realized, other space of the host body cannot be occupied, and the design of the notebook computer is more attractive. Moreover, when the host body is also in an all-metal design, the host body is not damaged. The grounding part can be connected with the metal upper shell and / or the metal lower shell to facilitate grounding, and the radiation part is separated from the metal upper shell and the metal lower shell, so that certain clearance areas can be ensured to exist on the upper side and the lower side of the radiation part, and thesignal transmission performance of the antenna structure is further ensured.
Owner:GUANGDONG HONGQIN COMM TECH CO LTD

Probe card device and neck-like probe thereof

The invention discloses a probe card device and a neck-like probe thereof. The neck-like probe is elongated and comprises a conductive probe body and an annular insulator. The conductive probe body comprises a stroke section and two tail end sections extending from the two ends of the stroke section respectively. The stroke section comprises two wide side faces and two narrow side faces, and each wide side face is concavely provided with a long groove extending from one of the two narrow side faces to the other of the two narrow side faces. The two long grooves are arranged adjacently, and the minimum distance is formed between the two long grooves and is 95% to 75% of the maximum distance between the two wide side faces. The annular insulator surrounds the portion, where the two long grooves are formed, of the conductive probe body, and the neck-like probe has a thickness at the portion, where the two long grooves are formed, of the annular insulator, and the thickness is 85% to 115% of the maximum distance. Therefore, the conductive probe body is provided with the two long grooves, so that the downward pressing force of the conductive probe body is effectively controlled, and the conductive probe body can stably abut against an object to be detected without damaging the object to be detected.
Owner:CHUNGHWA PRECISION TEST TECH

Rated voltage 12/20kv~26/35kv mine photoelectric composite medium voltage towing cable and its preparation process

The invention discloses a photoelectric composite medium-voltage trailing cable with rated voltage of 12 / 20kV-26 / 35kV for a mine and a preparation process of the cable. The medium-voltage trailing cable comprises a photoelectric unit, a ground wire core and at least three power line core conductors; and according to a formula, an inner sheath layer and an outer sheath layer comprise the following materials of 35-45 percent of chloroprene rubber 320F, 0.9-1.1 percent of tetramethyl thiuram disulfide, 0.45-0.55 percent of 2-thiobenthothiazole, 0.45-0.55 percent of 2-mercapto benzimidazole, 0.35-0.45 percent of N,N'-bi(beta-naphthyl) p-phenylenediamine, 0.5-0.7 percent of stearic acid, 4.5-5.5 percent of dioctyl sebacate, 0.9-1.1 percent of magnesium oxide, 0.9-1.1 percent of zinc oxide, 7-9 percent of a composite flame retardant, 4.5-5.5 percent of tricresyl phosphate, 17-23 percent of highly abrasion-resistant carbon black, 5.5-6.5 percent of talcum powder serving as a filling agent and 10-12 percent of calcium carbonate serving as a filling agent. According to the photoelectric composite medium-voltage trailing cable, the power transmission and signal transmission performances at the environmental temperature of 40 DEG C below zero to 80 DEG C are realized, and the ultraviolet resistance, low temperature resistance, wear resistance and ageing resistance are improved.
Owner:JIANGSU HENGTONG POWER CABLE

Prepreg spliced by regional glass fiber cloth, PCB and splicing method

The invention provides a prepreg spliced by regional glass fiber cloth. The prepreg is located between a first wiring layer and a second wiring layer adjacent to the first wiring layer and comprises first glass fiber cloth and second glass fiber cloth; the first glass fiber cloth is located in the area, where a high-speed signal line passes through, in the prepreg; the second glass fiber cloth is located in an area, where a low-speed signal line passes through, in the prepreg; the high-speed signal line is a high-speed signal wiring path which is in communication connection with the second wiring layer through a via hole in the first wiring layer; the low-speed signal line is a low-speed signal wiring path which is in communication connection with the second wiring layer through a via hole in the first wiring layer; the cost of the first glass fiber cloth is greater than the cost of the secondglass fiber cloth. The invention further provides a PCB and a prepreg splicing method. The problem that the production cost of prepregs is high in the prior art is effectively solved, the production cost of the prepreg is effectively reduced, meanwhile, the integrity of signals is considered, and the quality of products is guaranteed.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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