37 results about "Slotted line" patented technology

The antenna of said transmitter is a microstrip antenna. A rear edge of its patch is provided with a short circuit by means of which a quarter-wave primary resonance can be excited by a coplanar line formed by two coupling slots in an area. Separator slots separate said area from another area in which a secondary resonance can be established at twice the frequency of the primary resonance from a slotted line extending one slot of the coplanar line. The invention applies in particular to the production of a dual-mode mobile telephone to the GSM and DCS standards.

A process of forming a wiring in a semiconductor interlayer dielectric, include simultaneously patterning a via and a slotted line in the interlayer diectric, simultaneously etching the via and the slotted line, and simultaneously filling the via and the slotted line with a metal.

An ultra-wideband common radiating aperture antenna unit disclosed by the invention aims to provide a broadband radiating aperture antenna unit with high polarization isolation, small insertion loss,capable of reducing antenna weight and reducing antenna loss. The invention is realized by the following technical solution, a strongly coupled antenna dielectric layer is embedded with cross-angulararc-coupled patches having adjacent cross-arcs in transition connection, the upper and lower surfaces are etched with cross-shaped microstrip dipole oscillator arm radiating patches, the microstrip dipole oscillator arm radiating patches are divided into symmetrical dipole pairs by four slotted lines, and the horizontal microstrip dipole pair and the vertical dipole pair are respectively located on upper and lower sides of the layer structure, so that the two dipole pairs are mostly used as the basic unit of the antenna, and in the space, represent in a structure of being separated by the cross partition, being correspondingly overlapped up and down, and being symmetrically coupled to the balanced feeding, thereby forming an ultra-wideband working antenna unit with high isolation, low cross polarization and strong coupling effect for generating mutual capacitive loading feed.

The invention provides a wireless terminal and an antenna thereof. The antenna comprises an antenna feeder, a grounding element, a metal radiating unit with a slotted line and a matching point located at the gap of the slotted line, wherein the grounding element is located around the metal radiating unit with the slotted line, and a gap is left between the grounding element and the metal radiating unit with the slotted line. In the invention, the antenna is directly engraved on a circuit board or the antenna is connected with the circuit board by means of welding, cables and the like, so that the expense for specially manufacturing an antenna support, unmolding and the like is saved, the project expense is reduced, and the cost is reduced. The structure design requirement of the wireless terminal is well satisfied.

The invention discloses an antenna for generating radial spreading RF OAM wave beams based on an annular travelling wave antenna. The integral structure of the antenna includes a metal annular cavity, a circular ring slit is formed in one side surface of the cavity, the metal annular cavity is formed by bending a rectangular waveguide, the width of the metal annular cavity serves as the broadside of the rectangular waveguide, the height of the side surface serves as the narrow side of the rectangular waveguide, the slit is arranged in the middle of the narrow side, the perimeter of the metal annular cavity equals the vertical length of the rectangular waveguide, the sidewall of the metal annular cavity is provided with an annular loudspeaker, the annular loudspeaker is composed of two parts in up and down symmetry, a slit is formed at the bottom end of the annular loudspeaker during combination, and the position of the slit corresponds to the circular ring slit in the middle of the narrow side of the annular metal cavity. The antenna structure of the invention is formed by combining a resonant cavity of the rectangular waveguide with the antenna structure of the annular travelling wave antenna, the channel capacity of a direct channel can be improved, the transmission distance is increased, and the transmission efficiency of the communication system is improved.

The antenna of said transmitter is a microstrip antenna. A rear edge of its patch is provided with a short circuit by means of which a quarter-wave primary resonance can be excited by a coplanar line formed by two coupling slots in an area. Separator slots separate said area from another area in which a secondary resonance can be established at twice the frequency of the primary resonance from a slotted line extending one slot of the coplanar line. The invention applies in particular to the production of a dual-mode mobile telephone to the GSM and DCS standards.

The invention discloses a high-power microwave mode-conversion antenna based on a diffraction period structure and belongs to the technical field of microwave antennas. The antenna is composed of a primary feed source and an antenna array surface, wherein the primary feed source is a mode exciter capable of generating a symmetrical mode of a rotary shaft and the antenna array surface is subjectedto feeding by adopting a positive feedback manner; the antenna array surface is formed by periodically arraying a plurality of transmitting units formed by overlapping a plurality of layers of slottedmetal thin plates up and down. According to the antenna disclosed by the invention, the metal thin plates with slotted lines are used as the antenna array surface; compared with a traditional microstrip array antenna, the antenna has the advantage that the power capacity is greatly improved; the symmetrical mode of any rotary shaft can be converted into a single linear polarization mode, so thatthe antenna has a wide application field; the antenna also has the advantages of high gains, low sections, simple structure, easiness for processing and the like.

The invention provides a miniature ultra-wide-band antenna. The miniature ultra-wide-band antenna comprises a dielectric substrate and metal patches on the upper surface and the lower surface of the dielectric substrate, wherein the metal patch on the upper surface is an antenna patch, and the metal path on the lower surface is a microstrip feeder; the antenna patch comprises an earth plate, a short branch knot and a long branch knot, each of the long branch shot and the short branch shot comprises an internal slot line and an external slot line, the center of the earth plate is provided with a vertically slotted slot line, the upper part of the slotted line is connected to the internal slot line of the long branch knot, the bottom of the slotted line is connected to a circular slot, the edge shapes of the external slotted lines and the internal slotted lines of the long branch knot and the short branch knot adopt exponential type transition curves, and an exponential annular slot is formed between an external slot of the long branch knot and an internal slot of the short branch knot. The overall space of the miniature ultra-wide-band antenna is compact in structure, an antenna backboard is tightly connected with the feeder, a radiation element saves the dimensions while meeting a phase-position requirement in virtue of a coplanar strip line coupling power supply manner, the design is convenient, the principle that the antenna is additionally provided with the exponential annular slot to transfer the radiation of low-frequency points is easy to understand, and the replicability of a miniature scheme is high.

The invention relates to a panel for assembly and a machining technology thereof and a dryer. The machining technology comprises the steps that S1, plate blanking is carried out; S2, laser cutting iscarried out, specifically, laser cutting is carried out on a plate according to the boundary contour of a developing drawing of a finished panel; S3, slotting is carried out, specifically, a pluralityof bent lines are drawn on the plate, and slotting is carried out along the bent lines; S4, bending is carried out, specifically, bending treatment is carried out along slotted lines, one opposite sides are bent first, and then the other opposite sides are bend; and S5, welding and polishing are carried out, specifically, butt joints of the edges are subjected to welding and polishing treatment.According to the machining technology, five visible surfaces of the panel have no side seams which need to be welded, all positions which need to be welded are arranged on the inside side surfaces, namely, the invisible surfaces, line disappearance and chromatic aberration of the visible surfaces after welding and polishing are avoided, and an integral attractive effect is achieved. Meanwhile, themachining technology of the panel can effectively simplify the operation steps of bending and effectively ensure the overall flatness and attractive degree of bent parts.

The present invention refers to a method to provide slots in pipes and, more specifically, to a method to provide slots in metal pipes used to extract oil or to form slotted lines, wherein said slots are specially designed to avoid the intake of impurities while pumping oil. More specifically, the method consists of the following steps: a) external cleaning of the pipe (1) with slag jetting to remove the protecting layer that comes from its manufacture or to remove the impurities due to its oxidation; b) placing the pipe (1) on the receiving table by the set of motors (2) to be subsequently transferred to the cutting table (3), by means of motors (4); c) positioning and fixation of the pipe in the cutting cabin (5) by screwing the pneumatic rotating plate (6); d) execution of the first sequence of slots in the pipe by means of laser or plasma, in a refrigerated environment, by making a first slot with pre-defined power and subsequently the opening of the slot with determined length and thickness, according to the characteristics of the pipe, with said slot having an initial section with parallel shape and subsequently with divergent section; e) angle rotation of the pipe by means of turning the rotating plate (6) to make the second sequence of slots, in the opposite direction of the first sequence and then successively on the whole perimeter of the pipe to meet the desired specification; f) removal of the sludge and impurities generated by the cut by the sleeves (7); g) internal cleaning of the slotted pipe with slag jetting; h) visual inspection of the slotted pipe to correct failures and possible imperfections with MIG soldering; and i) painting to provide a uniform visual aspect to the slotted pipe.

The invention relates to a miniaturized artificial surface plasmon transmission line based on an interdigital structure, which includes a dielectric substrate, a metal slotted line, two matching units, and two microstrip feeder lines. The metal slotted line and the matching units are located on the same side of the dielectric substrate. The microstrip feeder lines are located on the other side ofthe dielectric substrate. The two matching units each have an end connected to the metal slotted line, and each have the other end overlapping the two microstrip feeders, respectively. The two matching units and two microstrip feeder lines are symmetrically arranged at both ends of the metal slotted line. The metal slotted line includes a plurality of slotted units. The interdigital structure composed of a plurality of metal bars is arranged in the slotted units. The miniaturized artificial surface plasmon transmission line has high-efficiency transmission characteristics, achieves the cut-off characteristics of lower-frequency electromagnetic waves on the premise of keeping the line width dimension of the transmission line unchanged, realizes the miniaturization design of the transmission line, can quickly realize specific miniaturized artificial surface surface plasmon transmission lines of different degrees, has the characteristics of low crosstalk and high efficiency, improves thespace utilization rate, facilitates processing, and has low cost.

The invention relates to a roller machine, a bobbin winding margin detection device and a use method of the bobbin winding margin detection device. Because the outer surface of a spool of a bobbin isprovided with a light-reflecting detection surface, a bobbin case is provided with a detection window, the outer side of the bobbin case is provided with a probe of a sensor, after a stitch on the spool of the bobbin is going to use up to make the light-reflecting detection surface exposed, the probe of the sensor can receive light rays transmitted by the detection window from the light-reflectingdetection surface and transmit the light rays to a sensor controller through optical fiber, the sensor controller judges the stitch margin on the spool according to the intensity of the received reflected light, and when the stitch margin is less than a set threshold, the sensor controller transmits alarm information to a sewing machine controller.

The invention discloses a compact micro-strip balance filter based on slotted line structures. The compact micro-strip balance filter based on the slotted line structures comprises a first filter and a second filter, wherein the first filter and the second filter are formed on a dielectric substrate The first filter and the second filter respectively comprise a micro-strip line structure located on the upper layer of the dielectric substrate and a slotted line located on the lower layer of the dielectric substrate. The first filter and the second filter are the same in structure and are symmetric mutually. The slotted line of the first filter is integrally connected with the slotted line of the second filter. The compact micro-strip balance filter has a very wide difference mode signal passband which internally has the very high common-mode rejection characteristic, a circuit is simple, and machining is easy.

The invention discloses an ultra wide band balance filter based on a slotted line structure. The ultra wide band balance filter comprises a first filter and a second filter, wherein the first filter and the second filter are the same in structure, symmetrical to each other and connected on a symmetry plane. The first filter comprises a microstrip line structure and the slotted line structure. The slotted line structure comprises 2N+1 slotted line resonators of linear structures, the length of the 2N+1 slotted line resonators is half of the corresponding wave length of the center frequency of the balance filter, and the 2N+1 slotted line resonators are evenly ranked at equal distances on a first straight line and a second straight line, wherein N is a natural number larger than one. The first straight line comprises the N slotted line resonators, the second straight line comprises the N+1 slotted line resonators, centers of the N slotted line resonators on the first straight line are arranged on spaced central axes between the N+1 slotted line resonators on the second straight line respectively, the 2N+1 slotted line resonators are coupled with one another, and the 2N+1 slotted line resonators and the microstrip line structure form N+2 order filters. The balance filter has the advantages of ultra wide bands, high common-mode rejection, the simple structure and the like.

The invention discloses an online grooving machine for section bars. The online grooving machine comprises a rack, wherein a rotary shaft is arranged on the rack; a first drive device capable of driving the rotary shaft to automatically rotate is arranged at one side of the rack; a turnover frame capable of rotating along with the rotary shaft is arranged on the rotary shaft; cutting blade shaftswhich are parallel to the rotary shaft and can automatically rotate are arranged on the turnover frame; a cutting blade sleeves each cutting blade shaft; the cutting blade shafts are arranged at intervals side by side around the rotary shaft; a planetary gear is arranged on the end part of each cutting blade shaft at the same side; a solar gear which is separately engaged with each planetary gearis arranged in each planetary gear; each solar gear sleeves the rotary shaft through a bearing; a second drive device capable of driving each solar gear to rotate is further arranged on the rack; a conveying roller way is arranged on the rack below the turnover frame; and a lifting device capable of lifting the conveying roller way is further arranged on the rack. The online grooving machine for section bars can greatly improve production efficiency, and can greatly reduce the production cost.

The invention provides a multilayer power distribution network based on a high-frequency printed board with a resistive film. The multilayer power distribution network based on a copper clad laminate with a resistive film is a multilayer power distribution network formed by laminating multiple layers of copper clad laminates. Each layer of the multilayer power distribution network is set as a stripline structure, the lower medium of the stripline structure is a core board, and the upper medium of the stripline structure is a prepreg; the multilayer power distribution network Ladder grooves are set on the top to lead out the signal lines to facilitate interconnection with other circuits; the power distribution network is mixed and integrated with other circuits by using the printed board multi-layer mixed pressure process. With the above scheme, no liner is needed, and the shielding cavity circuit is small in size and light in weight; the isolation resistor is directly embedded in the multilayer printed board and does not need to be drilled to connect with the surface resistor, and the power distribution network of different layers does not affect each other. More layers of power division network can be done.

The invention discloses an antenna for generating radially propagating radio frequency OAM beams based on a circular traveling wave antenna. The overall structure of the present invention is a metal annular cavity with a ring gap on the side. The metal annular cavity is formed by bending a rectangular waveguide. The width of the metal annular cavity is the wide side of the rectangular waveguide, and the height of the side is the narrow side of the rectangular waveguide. The seam is set in the middle of the narrow side, the perimeter of the metal ring cavity is the longitudinal length of the rectangular waveguide, and the side wall of the metal ring cavity is provided with a ring horn, which is composed of two parts that are symmetrical up and down, and when combined, the ring horn There is a suture at the bottom of the horn, and the gap corresponds to the ring gap in the middle of the narrow side of the annular metal cavity. Combining the rectangular waveguide resonant cavity and the annular traveling wave antenna structure, the invention designs an antenna structure capable of generating radio frequency orbital angular momentum beams capable of radial transmission. The invention can increase the channel capacity of the direct channel, increase the transmission distance, thereby improving the transmission efficiency of the communication system.

The invention relates to the field of liquid crystal display, in particular to a lateral entrance type reflector plate and a backlight module containing the same. The lateral entrance type reflector plate comprises a mixing portion and an installation portion. The mixing portion and the insulation portion are divided by roulettes. Transmitting openings are formed in the mixing portion, the transmitting openings close to the roulettes are corresponding to an LED light source interval positions. The reflector plate of the mixing portion is attached to an upper surface of a light guide panel by folding the roulettes. Most of light ray of heat pot regions close to the LED light source side is reflected back to the light guide panel to continuously generate reflection, refraction and scattering to enable the integral light guide panel to light uniformly through the arrangement of the transmitting openings, the hot spot phenomenon is avoided, the light utilization ratio is improved, and the backlight module and a liquid crystal displayer having good effect, high energy utilization ratio and narrow frames are produced.

The invention discloses a foldable minimally-invasive artificial retina microelectrode array. The array comprises a foldable soft substrate, wherein a first connecting terminal array area and a second connecting terminal array area are arranged at the two ends of the soft substrate respectively, the first connecting terminal array area is composed of first connecting terminals, the second connecting terminal array area is composed of second connecting terminals, an exciting electrode array area is arranged on the soft substrate and composed of exciting electrodes, the first connecting terminal array area is connected with the exciting electrode array area through a flat cable, the second connecting terminal array area is connected with the exciting electrode array area through a flat cable, suture holes are formed in the edge of the soft substrate, and the exciting electrode array area is of a semispherical structure. The foldable minimally-invasive artificial retina microelectrode array can make good contact with the macular area of the retina, the exciting effect is better, the array is foldable so that the array can be embedded into one eye through a small incision, the wound is small, the array can be conveniently embedded in, wound inflammation can be reduced through contained drugs, and the treatment effect is improved.

The invention discloses a double-mode balance filter based on a micro-strip slotted line structure. The double-mode balance filter based on the micro-strip slotted line structure comprises a first filter and a second filter, wherein the first filter and the second filter are equal in size and symmetrical to each other. The first filter and the second filter respectively comprises a micro-strip line structure located on the upper layer of a dielectric substrate and a slotted line structure located on the lower layer of the dielectric substrate, wherein the micro-strip line structure of the first filter comprises a first feeder line, a second feeder line, a first harmonic oscillator and a second harmonic oscillator, and the slotted line structure of the first filter comprises a first slotted line and a second slotted line. The micro-strip line structure of the second filter comprises a third feeder line, a fourth feeder line, a third harmonic oscillator and a fourth harmonic oscillator, and the slotted line structure of the second filter comprises a third slotted line and a fourth slotted line. A bending structure is adopted by the first harmonic oscillator, the second harmonic oscillator, the third harmonic oscillator and the fourth harmonic oscillator, a part of each harmonic oscillator is located on the upper layer of the dielectric substrate, and the other part of each harmonic oscillator is located on the lower layer of the dielectric substrate. The double-mode balance filter based on the micro-strip slotted line structure has the advantages of being wide in frequency band and high in common-mode rejection, is simple in circuit structure and easy to manufacture, and has high practicability.

The invention discloses a compact micro-strip balance filter based on slotted line structures. The compact micro-strip balance filter based on the slotted line structures comprises a first filter and a second filter, wherein the first filter and the second filter are formed on a dielectric substrate The first filter and the second filter respectively comprise a micro-strip line structure located on the upper layer of the dielectric substrate and a slotted line located on the lower layer of the dielectric substrate. The first filter and the second filter are the same in structure and are symmetric mutually. The slotted line of the first filter is integrally connected with the slotted line of the second filter. The compact micro-strip balance filter has a very wide difference mode signal passband which internally has the very high common-mode rejection characteristic, a circuit is simple, and machining is easy.

An electrical cable assembly including an electrical cable (10) and an electrical connector (12) connected to the electrical cable has a housing (20,22) thereon defining a passage therethrough for the electrical cable and opposed housing ends circumscribing the cable, one of the housing ends being in facing relation to the electrical connector. The housing has an EAS member (42) secured therein aside the housing passage. An article surveillance unit has first and second housing members joined to one another and defining a seam line, one of the first and second housing members defining structure overlapping the seam line.

The invention relates to an online cleaning device and an online cleaning method for a trench type liquid distributor in the petrochemical engineering field. The cleaning device is arranged above the trench type liquid distributor and comprises main flushing pipes (3) and flushing branch pipes (4), wherein one ends of the main flushing pipes (3) are connected with pipe nozzles (2) arranged on the tower wall, and the other ends of the main flushing pipes (3) are fixedly connected with the tower wall; secondary distributing trenches (6) of the trench type liquid distributor are suspended on the main flushing pipes (3); one ends of the flushing branch pipes (4) are communicated with the main flushing pipes (3), and the other ends of the flushing branch pipes (4) stretch into the bottoms of the secondary distributing trenches (6). Flushing fluid enters the main flushing pipes (3) through the pipe nozzles, then enters the flushing branch pipes (4) and is finally sprayed out so as to flush the secondary distributing trenches (6). According to the device and the method, sediments produced by the trench type liquid distributor in use can be effectively cleaned, and the liquid distributing effect of the trench type liquid distributor can be improved, the production period of the device is prolonged and the good application prospect is achieved.

The invention provides a high isolation slot line duplexer applied to an ultra-wideband channel and a narrow-band channel. The high isolation slot line duplexer comprises a first filter and a second filter, wherein the first filter and the second filter share a dielectric substrate and has a slotted line structure and a microstrip line structure; the slotted line structure is positioned on the lower layer of the dielectric substrate, and the microstrip line structure is positioned on the upper layer of the dielectric substrate; the bandwidth of the first filter is controlled through coupling among a U-shaped slotted line resonator, a first open stub and a second open stub, and can be controlled by adjusting intervals g1 among the U-shaped slotted line resonator, the first open stub and the second open stub; and the mode of resonance of the second filter can be controlled by loading the length of the stubs, accordingly the bandwidth of the second filter can be adjusted by adjusting the size of l5. According to the high isolation slot line duplexer, the bandwidths of the two filters can be adjusted independently; and the high isolation slot line duplexer is compact in structure, simple in circuit and high in frequency selectivity.

The present invention discloses a "Z" -shaped pattern slotting structure applicable to a thin-film PERC battery. The "Z" -shaped pattern slotting structure comprises a silicon substrate, a passivationfilm arranged on the back surface of the silicon substrate, and slotted lines arranged on the passivation film; the slotted lines comprise a plurality of equally spaced horizontal laser slots and a plurality of equally spaced vertical laser slots; the horizontal laser slots and the vertical laser slots have the same length; the horizontal laser slots and the vertical laser slots are connected endto end to form "Z" -shaped slotted lines; a plurality of slotted lines are equidistantly arranged on the surface of the passivation film. According to the slotting structure of the passivation film on the back surface of the PERC solar battery provided by the present invention, the aluminum paste on the back surface of the battery is in good contact with the silicon wafer, and the battery efficiency is slightly improved, efficiency improvement is more reflected in the increase of the open-circuit voltage and the filling, especially for thin silicon wafers; and the crushing rate of the slottedpattern batteries is reduced, and the warpage is reduced.

The invention discloses an ultra wide band balance filter based on a slotted line structure. The ultra wide band balance filter comprises a first filter and a second filter, wherein the first filter and the second filter are the same in structure, symmetrical to each other and connected on a symmetry plane. The first filter comprises a microstrip line structure and the slotted line structure. The slotted line structure comprises 2N+1 slotted line resonators of linear structures, the length of the 2N+1 slotted line resonators is half of the corresponding wave length of the center frequency of the balance filter, and the 2N+1 slotted line resonators are evenly ranked at equal distances on a first straight line and a second straight line, wherein N is a natural number larger than one. The first straight line comprises the N slotted line resonators, the second straight line comprises the N+1 slotted line resonators, centers of the N slotted line resonators on the first straight line are arranged on spaced central axes between the N+1 slotted line resonators on the second straight line respectively, the 2N+1 slotted line resonators are coupled with one another, and the 2N+1 slotted line resonators and the microstrip line structure form N+2 order filters. The balance filter has the advantages of ultra wide bands, high common-mode rejection, the simple structure and the like.

The invention relates to a construction method of a two-wall sandwiched plastic film for sandy soil dike foundation seepage cutoff. A sandy soil dike foundation seepage cutoff curtain at least built by an anti-seepage slot (1), the plastic film (2), backfill clay (3), an upstream side stirring pile unit wall (4), a downstream side stirring pile seepage cutoff wall (5) and lap-joint stirring pile seepage cutoff walls (6) on the two sides is closed. The construction method is characterized by comprising the following specific steps that first, a vertical laying plastic slotted line is determined; second, vertical laying plastic construction is conducted; third, stirring pile construction is conducted; and fourth, the upstream side stirring pile unit wall (4) and the downstream side stirringpile seepage cutoff wall (5) are closed and connected in a lapped mode. The problem of lap-joint treatment of a vertical laying plastic seepage cutoff curtain and a deep-layer stirring pile seepage cutoff curtain can be solved, so that a more economical and practical combined seepage cutoff curtain is formed. The construction method has the remarkable application benefits and very wide market promotion prospects.