183 results about "Transition line" patented technology

A process for making molds for retroreflective sheeting and like articles includes making a substrate having a structured surface of geometric structures such as cube corner elements. The structured surface is in one embodiment partially replicated from a previous generation structured surface, and partially machined in the substrate. At least one of the faces of the structured surface is a compound face that has one machined portion and one non-machined portion, such as a replicated portion. The process can be used to manufacture substrates with desirable geometry cube corner elements, such as cube corner elements having a hexagonal outline in plan view, without requiring the use of pin bundling techniques or laminae. The process can also be used to manufacture articles having cube corner elements in which at least one face of the cube corner element has two constituent faces disposed on opposed sides of a transition line that is nonparallel to a nondihedral edge of such cube corner element.

An enrobed a core, such as a tablet core, that has a coating made of one or more patterned films each having portions that are visually distinct (e.g., differently colored) from one another and having a transition line segment between these visually distinct portions. At least a portion of an outer surface of the core is covered with the film or films, such that the transition line segments form a substantially continuous transition line on the coating and a film seam is formed which is different from the transition line. Where the patterned films are bi-colored, the resulting enrobed core can be bi-colored, or the resulting enrobed core can have a coating with at least four visually distinct portions alternately arranged thereon, thereby forming a “checkerboard” pattern on the coating. In either case, the film seam of the coating is different from the transition line of the coating.

A motor vehicle headlight reflector and a headlight constructed therefrom, wherein the reflector comprises a plurality of laterally juxtaposed zones bounding transition lines with a break of slope. Each zone has a smooth reflective surface and is adapted to spread light horizontally between two limits obtained in the immediate vicinity of the transition lines. The limits of horizontal spread in each zone varies progressively with displacement along the transition line concerned. The invention also includes a method of making the motor vehicle headlight reflector.

A process for enrobing a core, such as a tablet core, uses a coating that is made of a patterned film having portions that are visually distinct (e.g, differently colored) from one another and having a transition line segment between these visually distinct portions. At least a portion of an outer surface of the core is covered with the film, such that the transition line segment forms a substantially continuous transition line on the coating and such that a film seam is formed which is different from the transition line. Alternatively, the coating is formed from two such patterned films, in which case the outer surface of the core is covered with the two films such that the two transition line segments cooperate to form a substantially continuous transition line on the coating and a film seam is formed which is different from the transition line. Prior to covering the outer surface of the core, the two films may be oriented such that the resulting enrobed core has a bi-colored coating with two visually distinct portions each lying on opposite sides of the transition line of the coating. The two films may also be oriented such that the resulting enrobed core has four alternately arranged colored portions, two of which are of a first color and the other two of which are of a second color, thereby resulting in a “checkerboard” effect.

The invention discloses a dual-polarization strong-coupling ultra-wideband phased-array antenna loaded with an electromagnetic metamaterial. The antenna comprises a strong-coupling folding dipole unit, a feed balun, a metamaterial wide-angle impedance matching layer, a microstrip transition line and a reflection floor, wherein the tail end of the strong-coupling folding dipole unit is slotted forfacilitating the dual-polarization design. A dipole and the designed feed balun are integrated on the same dielectric substrate, and the bottom of the dipole and the bottom of the designed feed balunare vertically embedded in the reflection floor; the wide-angle impedance matching layer is arranged at the top of the strong-coupling dipole unit, and the lower part completes the coaxial electric connection with the balun by bending the microstrip transition line, thereby achieving the impedance matching effect at the same time. The dual-polarization characteristic is achieved through the careful design of the tail end of the dipole, and a strong coupling folded dipole form is introduced; a novel wide-angle impedance matching layer structure is loaded to achieve the physical characteristicsof low profile and light weight and the excellent radiation performance of ultra wide band, low cross polarization and the like.

The invention relates to a coplanar waveguide feeder ultra wide band folded ring antenna and a manufacturing method thereof; the structure of the antenna is that a top layer subring and a bottom layer subring are respectively positioned at the two sides of a dielectric substrate and are connected with each other by two rows of metalized via holes, so that a complete folded ring is formed; the range of the included angle between a transition line and a horizontal line is 25-35 degrees; a coplanar waveguide feeder is connected with rectangle tuning branchknot by ladder impedance conversion structure, and the coplanar waveguide feeder, the rectangle tuning branchknot and the ladder impedance conversion structure form broadband feeding structure and are positioned at one side of the dielectric substrate together with the top layer subring. The manufacturing method utilizes the technique of a printed circuit board, designs the folded ring on the dielectric substrate with low specific inductive capacity and adopts the structure of a gradual transition ring, so as to reduce the lowest operating frequency and increase the operation bandwidth; on the other hand, the coplanar waveguide and the patch-shaped tuning branchknot are adopted as the feeder; at the same time, the multistage ladder impedance conversion structure is introduced between the branchknot and the feeder. The antenna has the advantages of simple structure, no feeding part attachment, simple manufacturing technique, convenient integration and low cost.

An air amortization piece side wall transition includes a main air cylinder piece consisting of a main body and an amortization wall; the side edge of the main air cylinder piece is provided with a side air cylinder piece which consists of a side body and a folding part. A transition line is arranged between the main body and the amortization wall, and between the side body and the folding part; a folding line is arranged between the main air cylinder piece and the side air cylinder piece; the side air cylinder piece is provided with a folding area block at the crossing position adjacent to the transition line and the folding line. When the main air cylinder piece is turned along the transition line; the side body of the side air cylinder piece is turned along the folding area block; the side air cylinder piece is bended along the folding line, thus forming a space between the main air cylinder piece and the side air cylinder piece, providing the contained objects in the space with the efficacy of six-surface amortization and effectively reducing the manufacturing cost.

The invention relates to a surface weak high-frequency microwave field strength measurement technology, and in particular relates to a device and a method for measuring high-frequency microwave field strength based on an electromagnetic induction transparent effect. The device and the method are technically characterized in that high-sensitivity and high-accuracy detection for the surface weak microwave field strength can be realized by a specially designed sample absorption cell structure, and atomic line splitting is associated with the microwave field strength by a quantum coherent effect of Rydberg state atoms, so that the measurement of the microwave field strength is traced back to the frequency standard of an atomic transition line, and the self-calibration of the device can be realized by utilizing the linear relation of the microwave field strength and the frequency standard of the atomic transition line; furthermore, due to the high-sensitivity response of high Rydberg state to the weak microwave field, the detection sensitivity of the high-frequency microwave field reaches up to 0.1mV / m and even reaches up to 10mV / m. Furthermore, the whole detection device is high in stability of structure and small in microwave turbulence.

The invention relates to an LED product assembling aging and integrating line which integrating the assembling, ageing and packing processes, and in particular relates to an online assembling ageing integrating line of an LED product and an assembling ageing process thereof. The integrating line mainly comprises a multi-speed assembling line, a lifting mechanism, a single-station mechanism, a propping translation mechanism, a multi-speed assembling branched line, a parallel transferring mechanism, a transition line mechanism, a reciprocating lifting mechanism, an ageing line and a packing line. The process mainly comprises the steps of assembling the LED product; ageing the LED product; packing the LED product. With the adoption of the online assembling ageing integrating line of the LED product and the assembling ageing process, a series of processes such as assembling, ageing testing and packaging can be performed for the LED product through one line system; the behindhand traditional production mode is removed ; therefore, the labor cost of an enterprise is decreased; the space of a plant building of the enterprise is saved; meanwhile, the enterprise benefits and the working efficiency can be increased, the working intensity of workers is decreased, and workers can simply, conveniently, quickly and efficiently operate.

An injection moulded part design which may be reflected in a part and the mould for making the part has a continuous alternating arrangement of thicker and thinner panels each extending from a gate area along a direction of flow to a transition line. Beyond the transition line the arrangement of thicker and thinner panels is inverted with the thicker panels continuing as thinner panels and vice versa along the direction of flow.

The invention discloses a method for measuring a microwave electric field by utilizing a double-dark state system. The method is characterized in that laser provided by an external cavity semiconductor laser is split by a dichroscope into probe laser and coupling laser, and the probe laser and the coupling laser enter a rubidium atom vapor chamber in the same direction through half-wave plates and a polarization beam splitter; the two half-wave plates adjust incident light intensity of a probe laser field and a coupling laser field respectively to enable the control field >> the probe field; the probe laser is locked in a rubidium Rydberg atom 5S1 / 2 (F = 1)-5P3 / 2 transition line, and the control laser is locked in a rubidium Rydberg state atom 5S1 / 2 (F = 2)-5P3 / 2 transition line; a frequency doubling laser provides coupling laser, and adjusts the coupling laser to couple in energy level 5P3 / 2-53D5 / 2 resonance frequency; a microwave analog signal generator provides a power-adjustable microwave signal to couple transition between Rydberg atom state vectors 53D5 / 2-54P3 / 2, and thus transmission peak of EIT of Rydberg atoms splits; and a photoelectric detector detects absorption characteristics of the probe laser, and transmission peak line wide space represents electric field intensity of the microwave signal. The method can greatly narrow transmission peak line width and improve detection precision and sensitivity.

The invention provides a vivaldi antenna array with symmetrical directional diagrams. The vivaldi antenna array comprises array feeding and array antenna radiation arm design and array mounting and feeding mode design, wherein an array feeding part comprises a multi-stage transition line power divider, and width and length of each cascaded power division line are adjusted through software to realize impedance matching; an array antenna radiation arm part adopts a coplanar exponential line radiation arm; an array mounting and feeding mode is as follows: an antenna array is rotated by 180 degrees, and two feed ports are opposite in the leftward and rightward direction and subjected to constant-amplitude inverse feeding through magic T. With adoption of asymmetric design of unit radiation arms, the disadvantage is turned into the advantage, and a feeding network is simple and easy and convenient to design; after rotation and inverse feeding are adopted, radiation of higher-order modes with symmetrical structures cancels, and effective energy concentration radiation is facilitated; due to polarization cancellation of electrical fields in other directions, lateral radiation of the rotated arrays is remarkably reduced.

The invention relates to the technical field of antennas, and particularly relates to a high-gain Vivaldi array antenna loaded with a director. The high-gain Vivaldi array antenna comprises a microstrip SIW conversion structure, an SIW-based one-to-eight power divider and eight Vivaldi antenna units. The microstrip SIW conversion structure converts the electromagnetic waves fed in by a microstripline into the electromagnetic waves of the SIW transmission band. The microstrip SIW conversion structure comprises the microstrip line, a trapezoid microstrip transition line, a metal ground and theSIW transmission band. The SIW-based one-to-eight power divider comprises a metal layer and inductive metal through holes. Each Vivaldi antenna unit comprises a Vivaldi radiation unit, an elliptical metal patch and a semi-elliptical dielectric substrate. The 39.5-46GHz frequency band can be covered and more than 1dB of the antenna gain can be enhanced within the frequency band coverage on the basis of the original array antennas.

The invention discloses a broadband substrate integrated waveguide circulator and belongs to the technical field of microwave devices. The broadband substrate integrated waveguide circulator comprises a rectangular dielectric substrate 5, a back metal floor and a front metal pattern. A metal pattern 1 in a regular triangle shape is positioned in the middle of the front metal pattern, and the metal pattern 1, the dielectric substrate 5 and the back metal floor form a three-port substrate integrated waveguide structure in 120-degree rotational symmetry. The substrate integrated waveguide structure comprises a central round window, and a central junction gyromagnetic ferrite 3 is internally arranged in the round window. Three ports of the substrate integrated waveguide structure are formed by connecting three trapezoidal micro-strip transition lines 2 in quarter central wavelength with three 50-ohm standard micro-strip lines 6 serving as a T-type port and positioned at the edge of the substrate 5. The broadband substrate integrated waveguide circulator has high isolation performance within all X-bands (8.2GHz-12.4GHz), low insertion loss and low port standing waves, and has the advantages of miniaturization, high power, integration and low cost.

The invention relates to a special gear of whole tooth profile meshing. A convex tooth profile curve of the special gear of the whole tooth profile meshing is an involute, while a concave tooth profile curve is a transition line, and a point S is used as a borderline. The tooth profile is formed by connecting smoothly and orderly a tooth point arc, a tooth angle curve EM, a tooth side special tooth profile curve MS, a transition curve SA between the tooth profile and a tooth root and a tooth root circular arc curve, and the meshing way is the whole tooth profile meshing; and a gear rotor of the special gear of the whole tooth profile meshing is a sealing moulding face of the whole tooth profile meshing, thereby eliminating meshing leakage, and eliminating excellently solidification phenomenon and pyrolysis phenomenon formed by fluid in an enclosed space when polymer is conveyed.

The invention discloses a transition line section tunnel CRD (Cross Diaphragm) construction method. The tunnel face outside the range of core soil of upper bench is closed by C20 concrete (50mm in thickness), before the grouting of the advanced small pipes in each row. A locking anchor pipe is arranged at a steel frame joint, and the anchor pipe is a steel perforated pipe shown in the description,where L is 2.0m. The front-back staggered space between pilot tunnels is not less than 10m, and the specific staggered length is adjusted appropriately according to the cross section length. Residuesbelow the foundation must be cleared before mounting the steel frame, the overexcavation part is filled properly by sprayed concrete, then the steel frame is located on the sprayed concrete cushion layer, so as to prevent overall sinking of the steel frame or sinking of the two non-uniform sides. the running tunnel excavation footage is equal to the grille space; a civil defense section, a transition line section 1, a transition line section 2 and a transition line section 3 are subjected to CRD construction; each pilot tunnel is built by the benching tunneling method; the construction is carried out under the principles of advanced pipe, strict grouting, short footage, strong support, early closing and frequent measurement', thereby guaranteeing safe and smooth tunnel construction.

The present invention relates to an element of transition between a waveguide and a transition line on a substrate. The element of transition comprises a securing flange on the substrate, the flange being dimensioned so that at least, in the direction microstrip line, the width d of the flange is selected in such a manner as to shift the resonant modes away from the useful band. The invention is used particularly for circuits using SMD techniques at millimeter frequencies.

The invention discloses a substrate integrated waveguide bandpass filter with a wide stop-band characteristic. The filter comprises a substrate integrated waveguide and a feed part, wherein the substrate integrated waveguide adopts rectangular substrate integrated waveguide cavities and is commonly defined by a plurality of metal through holes penetrating through a medium substrate and a metal patch on the upper surface of the medium substrate; four rectangular substrate integrated waveguide cavities with the same sizes and a distribution form like the Chinese character 'tian' are formed and comprise a first cavity, a second cavity, a third cavity and a fourth cavity in sequence from the beginning of an input end along the clockwise direction; the output end of the substrate integrated waveguide is connected with the fourth cavity; the feed part comprises a microstrip impedance transition line, an input end, an output end and a coplanar waveguide; the first cavity and the fourth cavity are respectively transited to the microstrip impedance transition lines at corresponding sides through the coplanar waveguide; the microstrip impedance transition lines on the outer sides of the first cavity and the fourth cavity are respectively connected with the input end and the output end. The whole structure of the filter is in an axisymmetric structure about a common side of the second cavity and the third cavity. The filter has the advantages of wide stop-band characteristic and smaller in-band return loss.

A pest control system for bed bugs or similar crawling pests. The system includes at least one intercept wall extending generally perpendicularly to the plane on which the pests are traveling for directing the pests to interact with a trap or a treatment zone. The effect of the intercept wall may be enhanced by provision of at least one substantially smooth guide surface positioned adjacent the intercept wall. When pests come into contact with a smooth surface they experience difficulty in traversing it. This causes the bugs to cling to the more textured surface that they are already traversing. The intercept wall is preferably placed in the direct path of the transition line between the textured surface and the smoother guide surfaces and forces the pests to interact with an adjacent trap or treatment zone.

The invention discloses a two-dimensional electronic scanning antenna. The two-dimensional electronic scanning antenna comprises a two-dimensional antenna array and also comprises first transmission lines, wherein the two-dimensional antenna array comprises at least two radiation unit groups, each radiation unit group at least comprises two radiation units, the first transmission lines are in correspondence to the radiation units, and each first transition line is connected with the two radiation units in one of the radiation unit groups and is used for simultaneously adjusting the phases of the two radiation units. By the two-dimensional electronic scanning antenna, the defect of structural complexity of a traditional two-dimensional electronic scanning antenna is overcome, and a constituent component of the antenna is simplified.

The invention discloses a three-passband micro-band filter with low loss, based on a wedged SIR (Signal to Interference Ratio) structure. The three-passband micro-band filter adopts a coupling feedback structure on a micro-band transmission line with matched 50ohm resistance, and a rectangular defective geo-structure (DGS) is additionally arranged under the lower side of the three-passband micro-band filter; and a resonator adopts an interdigital wedged SIR (Signal to Interference Ratio) structure. The wedged SIR structure adopts a transition line for improving the resistance mutation of the SIR to achieve the smooth effect, and can be equivalent to a limiting form of a multi-order SIR at the same time, and the coupling effect is stronger. The rectangular defective geo-structure (DGS) additionally arranged under 50ohm of a coupling feeder line is equivalent to that one low-pass filter is cascaded at the front end of a post-stage band-pass filter, thereby the performance of the filter under the condition of not increasing the volume of the filter is further optimized. The invention discloses the three-passband micro-band filter with the low loss on the basis of the wedged SIR structure, the structure of the which is smaller than that of a single filter, and the three-passband micro-band filter can better meet the requirement on modern communication of miniaturized three-passband.

The invention relates to an adapter for pressure sensors for monitoring long-term cylinder pressures in internal combustion engines, said adapter comprising a housing 1 with a gas duct 2, a connection 3 to a cylinder cover of an internal combustion engine, a rear opening 11 of the gas duct 2 from the housing 1 with an apparatus 12 for closing this rear opening 11 in a gastight manner, and a connection 4 for inserting a pressure sensor 5 with a sensor membrane 6. The idea underlying the invention is that the transition line 8 of the opening 7 in the gas duct 2, which is reached by the sensor membrane 6 in the inserted state in order to be exposed to the gas pressure in the gas duct 2, is on a plane. The transition line 8 forms the transition from the contour of the gas duct 2 to the connection to the sensor 5. This enables a continuous transition from the sensor membrane 6 to the contour of the gas duct 2.

Provided is a superconductivity flat wave current limiting reactor applicable to high-voltage direct-current transmission. A superconducting magnet composed of a superconducting coil (1), a coil frame (2), a coil upper supporting plate (3), a coil lower supporting plate (4) and a coil fastening screw (5) is arranged inside a low-temperature dewar device composed of a low-temperature dewar drum (7) and a low-temperature dewar upper cover plate (8). The superconducting magnet is cooled through direct evaporating of liquid nitrogen or cooled through the liquid nitrogen added into a refrigerator. The superconducting magnet is installed with the low-temperature dewar upper cover plate (8) through a pull rod (6). The superconducting magnet and a transition line (10) are connected with a direct current power grid through a current lead wire (9). A sleeve heat preservation layer (11), a sleeve low-temperature insulation layer (12) and a sleeve normal-temperature insulation layer (13) are arranged outside the current lead wire (9), good insulation is guaranteed, and heat leakage is reduced. The superconductivity flat wave current limiting reactor has no loss and only a flat wave effect is obtained when the direct current power grid works normally. When the direct current power grid is short-circuited, resistance of the reactor is increased fast, and short-circuit current is restrained to certain level.

A package assembly provides a pair of openable product packets which support consumable products. The product packets are accommodated in a housing. The housing is formed from an elongate planar housing structure having a central wall and a pair of oppositely directed foldable flaps extending from opposite edges of the central wall. A transition line extends longitudinally thereacross. The packets are supported on the central wall on opposite sides of the fold line. The transition line may include a fold line, a severing line or a combination thereof.

The invention provides a method of designing shaping tools for metal containers (such as metal bottles) to minimize the formation of visible transition lines or ripples conventionally produced in such procedures as die necking and outward flaring. The method involves carefully measuring differences between an actual shape produced and a design shape resulting from an original set of shaping tools. The tools are then refined in design to take into account metal spring back and the effect of one shaping stage on the results of previous stages. The redesign goes through several iterations to ensure that each change produces an improvement of the formed container. In this way, the formation of transition lines can be minimized because the actual shape of the container more closely resembles the smooth design shape. Dies designed in this way are then used for commercial shaping operations.

The invention discloses a construction method for changing a monolithic track bed to a floating slab track bed in a subway operation line tunnel. The construction method comprises the following steps that 1, first-stage concrete breaking and removing is conducted; 2, second-stage concrete breaking and removing is conducted, a temporary steel sleeper transition line is installed, and passage is recovered; 3, third-stage concrete breaking and removing is conducted; 4, foundation concrete construction is conducted; 5, steel bars are tied, and new foundation rapid hardening concrete is poured; 6, floating slabs are laid. A laid track bed is cut through low-noise rope saws and wall saws, cut laid slabs are lifted and conveyed through researched cantilever cranes in a subway tunnel, the new floating slabs are laid, and then the laid monolithic track bed is changed. By the adoption of the construction method, noise is low, the operation line does not stop during construction, safety and reliability are achieved, and the requirements for urban civil construction, operation line transportation, operation line safety and construction efficiency are met.

The invention provides a broadband Quari-Yagi antenna applied to a multi-band frequency wireless communication system. The broadband Quari-Yagi antenna comprises a dielectric substrate, a metal earth plate, a SMA connector, metal symmetrical dipoles, a metal impedance transition line, a metal director dipole and a metal impedance matching branch. The metal earth plate covers the dielectric substrate and is connected with the metal impedance transition line. The SMA connector is arranged on one side of the metal earth plate and is connected with the metal impedance transition line. Two pairs of metal symmetrical dipoles are respectively connected with the metal impedance transition line and cover the two faces of the dielectric substrate. The metal impedance matching branch is arranged between the metal earth plate and the metal symmetrical dipoles, and the metal impedance matching branch is connected to the metal impedance transition line. The metal director dipole is arranged on the rear portion of the metal symmetrical dipoles. The broadband Quari-Yagi antenna can be applied to the integrated multi-band frequency wireless communication system, an operation bandwidth can cover all communication frequency bands within 1.7GHz-4.1GHz, and the characteristics of good gains and directional diagrams are achieved.

The invention discloses an exposure time adjusting method for earth observation frame transfer area array CCD image motion matching and relates to a frame transfer area array CCD exposure time adjusting method for solving the problem that when the exposure time is too short, the signal to noise ratio is too low, and when the exposure time exceeds one equivalent line period, obvious image blurringoccurs, so that the dynamic transfer function declines along the orbit direction in the existing earth observation imaging application. The method comprises the steps of (1) light-sensitive area useless charge frame transfer phase; (2) controllable-time image motion matching exposure phase; (3) light-sensitive area useful charge frame transfer and original storage area same-line useless charge dumping phase; (4) storage area residual useless charge and light-sensitive area transition-line charge dumping phase; and (5) storage area useful charge frame reading phase. According to the method, theinterval of two times of frame transfer in the light-sensitive area is changed to control the exposure time, a mechanical shutter is not needed, and the original hardware circuit is not modified; andin addition, the image blurring problem under long exposure time is effectively solved.

The invention discloses an injection-molded optical transparent cover for a surveillance camera. The injection-molded optical transparent cover is characterized in that the injection-molded optical transparent cover is in a semi-elliptical shape and accordant with a curve equation that (x<2> / a<2>)+(y<2> / b<2>)=1, wherein b is larger than a which is larger than 0, and y is larger than or equal to 0, and an origin of coordinates is O (0, 0); the height of the outer surface of the cover is b, and a radius of an opening is a, wherein b:a is larger than or equal to 1.1:1 and smaller than or equal to 1.4:1. Since the height of a semi-ellipse in the long axis direction is larger than that of a circle, the optical transparent cover can be higher under the condition of the same opening diameter; ghosting and blooming in long focus in the horizontal direction (-10 degrees to 5 degrees) can be avoided; transition lines are avoided, a whole section is formed by a complete geometrical curve and most approximate to a circle. The injection-molded optical transparent cover for the surveillance camera has the advantages that transition lines are avoided when a camera lens passes through the area of the cover for imaging, and imaging quality can be optimal.