19 results about "Meander line" patented technology

The invention relates to the technical field of antennas, and discloses a reconfigurable transflective array antenna applied to non-line-of-sight microwave propagation, which comprises a control circuit, and a first polarization grid layer, a first dielectric layer, M * N resonant sheets, a second dielectric layer and a second polarization grid layer which are sequentially arranged, the resonance piece comprises a radiation part, a grounding wire, four extension parts and two PIN diodes, the four extension parts are symmetrically arranged on the periphery of the radiation part and are connected with the radiation part, and the two PIN diodes are respectively arranged on two adjacent extension parts and are respectively connected with the upper polarization grid layer and the lower polarization grid layer through bending wires on the extension parts and metal columns in the dielectric layer; one end of the grounding wire is connected with the radiation part, and the other end is connected with direct-current ground; and the control circuit controls the connection and disconnection of the PIN diode through the polarization gate layer to realize a transmission mode or a reflection mode. The reconfigurable transflective array antenna applied to non-line-of-sight microwave propagation is relatively simple in structure, and loss can be reduced.

The present invention, as a preliminary process for a bending process simulation, collectively selects a plurality of line segments that are arranged on a straight line and that are subject to a simultaneous bending process. When identifying a line segment to be subjected to the bending process to divide the area with respect to a planar area representing a metal sheet, this jig selects both extreme ends of a plurality of line segments existing on the same straight line, thereby collectively selecting the plurality of line segments.

Provided is a vehicle glass having an antenna. The vehicle glass comprises: a first glass layer; and a metal thin film layer disposed on the first glass layer and having an antenna pattern. The antenna pattern comprises: a first monopole antenna pattern extending from a feeding line in the longitudinal direction to radiate a predetermined first frequency band signal; a first transverse branch pattern extending from an end portion of the first monopole antenna pattern to a first transverse side surface; and a meander radiation pattern extending from a point between a feeding line-connection portion and the end portion of the first monopole antenna pattern to a second transverse side surface, having a meander line, and radiating a second frequency band signal that is lower than the first frequency band.

An optical reflecting assembly includes a reflective member, a reflective element holder and a structure component. The reflective member includes a reflective surface for folding a light. The reflective element holder includes an assembling surface correspondingly disposed to the reflective member. The structure component is made of a metal material and has a three-dimensional structure, at least one portion of the structure component is inserted in the reflective element holder, and the structure component includes a first supporting wall, a second supporting wall and at least one extending wall. The first supporting wall and the second supporting wall are bent to form a first bending line with an angle. The extending wall and the second supporting wall are bent to form an extending bending line being a non-closed line.

The invention discloses a millimeter wave miniaturized dual-frequency dual-polarization filtering antenna. The antenna comprises a miniaturized SIW resonant cavity and two strip-shaped parasitic patches. The dual-frequency work is realized by simultaneously exciting a TE110 mode and a TE210 mode of the SIW resonant cavity, and a half-mode structure and a meandering flow technology are adopted, so that the antenna size is effectively reduced, and the miniaturization design is realized. The four radiation zero points are introduced to the two sides of the passband by using electromagnetic hybrid coupling between the cavities and a cross coupling mechanism between the patch and the cavities, so that the antenna has excellent frequency selectivity under the condition that an independent filter circuit is not added. The antenna is compact in structure and high in integration level, has the characteristics of wide impedance bandwidth, high out-of-band rejection, miniaturization, simple feed structure and dual-frequency and dual-polarization, and is suitable for a millimeter wave integrated wireless system with strict requirements on size and performance.

An optical reflecting assembly includes a reflective member, a reflective element holder and a structure component. The reflective member includes a reflective surface for folding a light. The reflective element holder includes an assembling surface correspondingly disposed to the reflective member. The structure component is made of a metal material and has a three-dimensional structure, at least one portion of the structure component is inserted in the reflective element holder, and the structure component includes a first supporting wall, a second supporting wall and at least one extending wall. The first supporting wall and the second supporting wall are bent to form a first bending line with an angle. The extending wall and the second supporting wall are bent to form an extending bending line being a non-closed line.

The application belongs to the technical field of antennas and relates to a wide-angle scanning co-aperture dual-polarized tight coupling array antenna, which comprises a low-frequency antenna array surface, a low-frequency vertical branch, a low-frequency feed balun, a high-frequency antenna array surface, a low-frequency feed network and a coaxial joint. The application avoids loading of resistive materials by decomposing a traditional ultra-wideband tight coupling array antenna into two antennas with smaller bandwidths and arranging the two antennas in a co-aperture mode. The upper low-frequency antenna unit is divided into multiple sub-units, and a meandering line design is adopted to realize electromagnetic transparency of the lower high-frequency antenna. Loading of the vertical branch further suppresses mutual interference between the high-frequency and low-frequency antennas. The low-frequency sub-units after fractalization are combined into a large unit by a power divider. In a working frequency band of 2GHz-6GHz and 7GHz-18GHz, the average efficiency reaches 85%, and the active standing wave ratio is less than 4 within a scanning range of ±60°, thereby overcoming the problems of the traditional design that cannot simultaneously achieve ultra-wideband, high efficiency, wide-angle scanning and dual polarization.

To realize a curved tube which can be freely curved in an arbitrary direction with a low load, and to realize a manufacturing method of the curved tube which can remarkably reduce a manufacturing cost.SOLUTION: The bending tube 1 is a bending tube in which a flexible metal plate 50 is formed in a cylindrical shape and which can be freely bent. The curved tube 1 includes the plurality of ring portions 10 arranged apart from each other in the length direction, and the bendable connecting beam portions 30 to 33 that protrude from the opposing end portions of the adjacent ring portions and connect the adjacent ring portions 10. The connecting beam portions 30 to 33 are disposed at at least two positions facing each other in the outer circumferential direction of the ring portion 10. The curved tube 1 is formed into a tubular shape by punching the connection beam portion 30,31,32,33 in the metal plate 50 to form the developed formed plate 51, bending the developed formed plate 51 at the bending line 52, and joining the developed formed plate 51 at the joint portion 53.SELECTED DRAWING: Figure 1

The invention provides a dual-frequency implantable antenna based on a winding line structure. The dual-frequency implantable antenna is used for solving the technical problem that an existing implantable antenna cannot realize high-frequency-ratio dual-frequency work. Comprising an upper layer substrate used for isolating a radiator and biological tissue, a middle layer substrate used for installing a winding line radiation patch, and a bottom layer substrate reserved with a rectification circuit integration space. The upper layer substrate, the middle layer substrate and the bottom layer substrate are sequentially arranged in a stacked mode from top to bottom, a winding line radiation patch is attached to the middle layer substrate, and the winding line radiation patch comprises more than two asymmetrical winding patch units. And the plurality of winding patch units used for increasing the length of a current path so as to realize a dual-frequency resonant mode are connected in sequence. Synchronous work of a 915 MHz frequency band wireless energy receiving mode and a 2.5 GHz frequency band data telemetering mode can be achieved, and the power supply circuit is suitable for implantable medical equipment needing continuous power supply such as intracranial pressure monitoring and cardiac pacemakers.

A multiband base station antenna having improved beamwidth is disclosed. The disclosed antenna comprises: a reflective plate; a plurality of first low-band radiators arranged on the reflective plate along a first column; a plurality of second low-band radiators arranged on the reflective plate along a second column, which is parallel to the first column and is spaced from the first column; a plurality of high-band radiators arranged on the reflective plate; and a plurality of vertical choke members arranged, between the first column and the second column, in the direction parallel to that of the first column and the second column, wherein the vertical choke members comprise a first substrate, a meander line is formed on the first substrate, and a metal line is formed under the first substrate. According to the disclosed antenna, beamwidth distortion of each radiator, caused by interference between the radiators, can be prevented, and proper isolation characteristics between the radiators can be ensured.

The invention discloses a miniaturized foldable ultra-wideband monopole antenna which comprises a dielectric substrate, a monopole radiation arm, a meander line radiation arm, a short-circuit metal wire, a feed probe and a cylindrical metal body. The monopole radiation arm, the meander line radiation arm and the short circuit metal wire are all attached to the same dielectric substrate, and a corresponding radiator structure can be formed through folding of the dielectric substrate. The monopole radiation arm is formed by bending a gradual change metal sheet and serves as a main radiation structure of the antenna. The feed probe is connected with the monopole radiation arm and provides feed excitation for the antenna; the meander line radiation arm is formed by bending a metal line, and is used as a parasitic loading structure for expanding the bandwidth of the antenna in a low-frequency band; and the meander line radiation arms are connected with the cylindrical metal body through short-circuit metal wires. According to the monopole antenna, the impedance bandwidth of an ultra wide band is achieved, the radiation structure can be formed by bending a single-layer printed circuit board, the monopole antenna has the advantages of being compact in structure and easy to manufacture, and integration with wireless communication equipment is facilitated.

The technology described herein is directed towards Butler matrix that can be implemented in a monolithic planar structure design for low-cost and scalable manufacturing. One implementation design is for a device that integrates the quadrature couplers, crossover couplers, and fixed phase-shift meandered lines of the Butler matrix, with a switch and an antenna array in a planar layout that eliminates the need for multiple layers of metallization. The implementation uses monolithic nonvolatile phase change material-based radio frequency (RF) switch elements for dynamic beamforming, by routing RF signals through the Butler matrix based on controlling conductive and nonconductive states of the phase change material corresponding to selectable switch ports. This facilitates dynamic, power-efficient reconfiguration within the Butler Matrix for flexible beam steering. Also described are ultra-wideband quadrature couplers and crossover couplers with parametric design optimization variables, which facilitates ultra-compact device designs.

A charged particle trap is disclosed. The charged particle trap comprises a substrate and a layer structure disposed on the substrate, the layer structure including an antenna layer and an electrode layer. The antenna layer comprises a co-planar conductive meander line comprising at least three elongate arms which are parallel and co-planar, and which are symmetrical about a central axis. The electrode layer comprises a set of electrodes arranged to trap charged particles along a trap axis which is parallel to the central axis and to generate a pseudopotential which is symmetrical about the trap axis.

The invention relates to a coplanar waveguide-based high-temperature superconducting quantum voltage standard device and a preparation method thereof. The coplanar waveguide-based high-temperature superconducting quantum voltage standard device comprises a substrate, a coplanar waveguide and a high-temperature superconducting Josephson junction array, the coplanar waveguide comprises a first grounding strip, a second grounding strip and a target center signal strip which is located between the first grounding strip and the second grounding strip and serves as a microwave transmission structure to receive microwave signals; the high-temperature superconductive Josephson junction array comprises N Josephson junctions connected in series with a target center signal band, and is formed by patterning an initial center signal band in a preset area through a focused helium ion beam technology or by adopting a technology of shuttling a bicrystal grain boundary back and forth by a winding line, the residual initial center signal band outside the area is used for forming the target center signal band. Aiming at the problems existing in a high-temperature superconducting quantum voltage standard device of a three-dimensional resonant cavity, a novel device with a compact structure and high stability is provided, efficient and broadband excitation is realized, and meanwhile, the preparation method is low in difficulty, high in repeatability and suitable for batch production.

The invention relates to a laser assembly having at least two edge-emitting laser ridges, each having an active zone integrated therein and a coupling-out plane, wherein the at least two edge-emitting laser ridges have, spatially separated from one another, a common and in particular single-piece semiconductor layer sequence having a contact region and each have a contact connection in particular on a surface of the laser ridge for supplying charge carriers to the active zone. A carrier substrate having at least one contact region is electrically coupled and mechanically connected to the contact region of the common semiconductor layer sequence. Furthermore, a heating element is provided, which is applied to a surface formed of one of the common semiconductor layer sequences and the carrier substrate and comprises two contact connections and a meandering line between the two contact connections.

A substrate integrated waveguide (SIW) cavity antenna is described that enables dual frequency and broadband operation, as well as enhanced protection from radio frequency interference (RFI) that may be present within an electronic device environment. The SIW cavity antenna includes a capacitively-coupled feed that is disposed within the volume of the SIW cavity antenna, which is enclosed on four sides via a set of electrically-conductive plates. The SIW cavity antenna radiates using the remaining two open sides as apertures. The SIW cavity antenna may include a meander line radiator to facilitate the operation of a second frequency band, as well as the use of a tuning stub to further enhance the impedance bandwidth.

The invention relates to a circuit board (100) having a carrier (1) which can be converted from a flat shape into a three-dimensional shape and can be equipped with components, to a method for producing an electronics assembly (200) comprising the circuit board (100), and to an electronic device (300) comprising the electronics assembly (200). The carrier (1) comprises three or more regions (3a, 3b, 3c, 3d). Before the carrier (1) is first converted into the three-dimensional shape, each region (3a, 3b, 3c, 3d) is connected to at least one adjacent region (3a, 3b, 3c, 3d) via two or more bendable and / or breakable connection pieces (5) which are spaced apart from one another along a bending line (K) running between the two adjacent regions (3a, 3b, 3c, 3d). The regions (3a, 3b, 3c, 3d) which are connected to one another via connection pieces (5) before the first-time conversion are connected in each case via two or more flexible connecting bridges (7) which are spaced apart from one another along the bending line (K) running between the two regions (3a, 3b, 3c, 3d).

A wiring board includes a flat band-shaped portion constituted by a flexible printed circuit board and a reinforcing plate having a flat-plate shape and made of metal, a part of which is fixed to the band-shaped portion, and the band-shaped portion and the reinforcing plate are bent at a predetermined position during manufacture of an optical unit with a shake correction function. The reinforcing plate is disposed across a bend line, which is a reference for a bent position of the band-shaped portion, and is fixed to the band-shaped portion only on one side of the bend line.