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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.