47results about "Leaky-waveguide antennas" patented technology

To provide a radar antenna that has the required characteristics and performance while keeping manufacturing costs low.SOLUTION: A radar antenna includes a plurality of radiation stubs 21 that are formed on the front side of a plate-like horizontally elongated housing 2, and are groove-shaped extending approximately perpendicular to the longitudinal direction of the housing 2, and are arranged in parallel along the longitudinal direction of the housing 2, a waveguide portion that is formed within the housing 2, extends along the longitudinal direction of the housing 2, and communicates with each radiation stub 21, and a first dielectric 3 that is provided within each radiation stub 21, and is formed such that the center is thin and both ends are thick in the longitudinal direction of the radiation stub 21.SELECTED DRAWING: Figure 1

An antenna assembly is provided. The antenna assembly includes a ceramic carrier having a first surface and a second surface, the second surface being opposite the first surface. The antenna assembly further includes an antenna pattern. The antenna pattern includes a first antenna portion positioned at least partially on the first surface of the ceramic carrier. The antenna pattern further includes a second antenna portion comprising a plurality of conductive vias extending through the ceramic carrier from the first antenna portion to the second surface of the ceramic carrier.

This application provides a resonant cavity antenna and an electronic device, and relates to the communications field. The resonant cavity antenna includes an antenna cavity, a first gap, and a feeding part. At least one edge of a first surface of the antenna cavity is parallel to a long edge of a display of an electronic device, at least one edge of a second surface of the antenna cavity is parallel to the long edge of the display, a plane on which the first surface is located intersects a plane on which the second surface is located. The first gap is disposed on the first surface and / or the second surface, and at least a part of the first gap extends in a direction of the long edge of the display. The feeding part is located inside the antenna cavity, and in contact with none of surfaces of the antenna cavity.

This invention discloses a design method and structure for a half-mode dielectric ridge parallel plate waveguide dual-beam wide-angle scanning leaky antenna based on PCB technology. Manufactured using a fully printed circuit board process, it includes a core structure of a half-mode dielectric ridge parallel plate waveguide transmission line formed by laminating three dielectric substrates, a metallized via array disposed at the edge of the waveguide's non-radiating open aperture to suppress energy leakage, and a periodic dipole array symmetrically arranged on the radiating open aperture side of the waveguide. This invention solves the technical problems of high manufacturing cost, narrow scanning range, and difficulty in implementing dual beams in traditional leaky antennas, providing a low-cost, high-performance, and easily integrated antenna solution.

An array antenna (100) having a layered structure. The array antenna includes a radiating layer (110) including a plurality of radiating elements (111) and a distribution layer (120) facing the radiating layer. The distribution layer is configured to distribute a radio frequency (RF) signal to the plurality of radiating elements. The distribution layer includes at least one distribution layer feed (121) and at least one first waveguide (122) configured to guide the RF signal between the at least one distribution layer feed and the at least one radiating element. The array antenna further includes at least one second waveguide (130) coupled to the at least one distribution layer feed (121). Either the first waveguide (122) or the second waveguide (130) includes a plastic having a first type of surface treatment (313), the first type of surface treatment including metallization. At least one of the radiating elements is a dummy element terminated by an attenuation section coupled to the dummy element and disposed in one of the plastic-containing waveguides (122, 130). The attenuation section includes a second type of surface treatment (314) configured to attenuate the RF signal.

The application discloses a kind of based on low-loss anti-resonance hollow waveguide broadband high-efficiency leaky-wave antenna design method and structure, its technical scheme includes: first based on anti-resonance principle design single dielectric wall hollow waveguide;Further introduce second dielectric wall optimization form double dielectric wall anti-resonance hollow waveguide, significantly enhance the transverse restraint to electromagnetic energy in air cavity by cascading reflection effect, realize super low loss transmission;Finally, etching periodic radiation slot in the upper layer metal plate of double dielectric wall hollow waveguide, construct leaky-wave antenna with frequency scanning function.The application uses air as main transmission medium, fundamentally reduces dielectric loss, so that the antenna has ultra-low transmission loss and ultra-high radiation efficiency in wide frequency band, while the structure is simple, process compatibility is strong, only through standard PCB process can be realized, can be widely used in 5G / 6G communication, millimeter wave radar, terahertz imaging and other high-performance wireless systems.

The invention relates to an antenna element (1) for an antenna array with a dielectric first antenna bar (3) and a dielectric second antenna bar (4), wherein a converter section (5) is formed in the antenna element (1) in which the first antenna bar (3) tapers in cross-section along a longitudinal direction and the second antenna bar (4) is formed at a distance from the first antenna bar (3) forming a gap (6) and increases in cross-section, and the longitudinally extending gap (6) has a gap medium of a lower permittivity than the permittivity of the first antenna bar (3) and the second antenna bar (4), so that a mode of a signal coupled into the antenna element (1) is guided in the gap (6). In this way, a low-loss, broadband antenna element is provided, in which the propagation time of a signal can be easily adjusted.The antenna element according to the invention is also compact and cost-effective to manufacture and easy to integrate.

To achieve a slot array antenna capable of facilitating manufacturing.SOLUTION: A slot array antenna 4 including a radiating plate 2 and a base plate 1 is provided. The radiating plate 2 has a first surface having a plurality of slots 22 radiating radio waves and a horn shape with both sides of the first surface curved in a shorter side direction. The radiating plate further has first and second connecting members 25, 26 that are protrusions bent in the direction opposite to the direction of radio wave radiation at both ends in the longer side direction of the first surface. The base plate has a U-shape and has first and second notches 14, 15 at both ends in the longer side direction. The first and second connecting members 25, 26 of the radiating plate 2 are inserted into the first and second notches 14, 15 of the base plate 1.SELECTED DRAWING: Figure 4

A radar for a vehicle may include a frame having a waveguide antenna embedded therein and extending in a direction crossing an extension direction of the waveguide antenna, a plated region covering at least a portion of the outer peripheral surface of the frame and formed of a metallic material, and an un-plated region not coated with the metallic material on one surface of the frame, wherein the un-plated region is located to be adjacent to the waveguide antenna. Therefore, the radar for the vehicle can improve the stability of an antenna pattern and a phase.

The utility model belongs to the field of antenna, especially relates to a kind of X wave band low side lobe waveguide slot antenna.The utility model two waveguide slot subarray antenna between the center spacing is 17mm, it is characterized in that waveguide slot antenna input end is connected with waveguide coaxial transducer;Waveguide slot antenna output end is connected with waveguide load;Waveguide cavity wide side size is 22.86mm, waveguide cavity narrow side size is 10.16mm;Each waveguide slot subarray antenna contains multiple slots, and the inclination angle and cutting depth of each slot are not same.The antenna of the utility model has the point of low side lobe, high gain and narrow beam, and is suitable for X wave band wireless communication system.

The application discloses an antenna technical field and relates to a one-transmitting-one-receiving omnidirectional antenna based on a 3D printing process, which comprises a PCB board and transmitting antennas and receiving antennas arranged on the two sides of the PCB board respectively, and the transmitting antennas and the receiving antennas are of the same structure; the transmitting antenna comprises a circular waveguide structure, a plurality of windows arranged on the side wall of the circular waveguide structure, and a coaxial inner conductor, a waveguide transition structure, a semicircular waveguide structure and an L-shaped bending conversion structure arranged in the circular waveguide structure in sequence, and a baffle for extending to the coaxial inner conductor is arranged on the window; the application combines the 3D printing process requirements, designs a one-transmitting-one-receiving horizontal omnidirectional waveguide antenna, designs a waveguide antenna and a chip feeding structure, can meet the miniaturization and integration requirements, is installed on a wireless sensor, and metal 3D printing does not need a mold; from a three-dimensional model to a finished part, only printing parameter setting, forming and simple post-processing are needed, and the research and development cycle is shortened.

The application discloses a dual-polarized directional standing wave leaky-wave antenna and a design method of a downward inclination angle thereof, and the antenna comprises, from top to bottom, a metal strip layer, a first dielectric layer, a first metal ground and an artificial magnetic conductor reflector plate, the metal strip layer comprises two metal strips which are symmetrically distributed along a central axis in a y direction of the first dielectric layer, the metal strip comprises a matching transition structure on both sides of a center feed and an artificial surface plasmon structure with different slot depths, the first metal ground is etched with periodic composite slots, and the slot periods on both sides of the center feed are different; the artificial magnetic conductor reflector plate is separated from the first metal ground by an air layer; the dual-polarized leaky-wave radiation is realized through period control of the composite slots; in addition, the downward inclination angle can be designed by reasonably designing the slot depths of the artificial surface plasmon structures on both sides of the feed and the slot periods of the first metal ground; and the application is suitable for large-aperture high-gain long-distance mobile communication.

To provide a radar sensor that can be manufactured with high cost effectiveness.SOLUTION: A radar sensor includes at least one high frequency module 16, and at least one waveguide structure 10 in the form of a plastic body having a conductive surface layer 38, and further includes at least one further plastic body 12, 14 having electrically conductive surface layers 28, 40, 30, 32, and the plastic bodies are thermally bonded together at their conductive surface layers.SELECTED DRAWING: Figure 1

A leakage apparatus, a positioning method, and an electronic device are provided. The leakage apparatus (20) includes at least one positioning module (21) and at least one non-positioning module (22), at least one positioning area being provided in the positioning module (21); where, the positioning module (21) is connected with the non-positioning module (22), the positioning area in the positioning module (21) is configured to leak a positioning signal, a range obtained by superimposing a coverage area of the positioning signal leaked by each positioning module (21) in a longitudinal direction covers an area where the leakage apparatus (20) is located, the longitudinal direction referring to an extension direction of the leakage apparatus (20). By arranging the positioning modules (21) in the leakage apparatus (20) at intervals, transmission paths of the positioning signal leaked by different positioning modules (21) are obviously different, so that accurate positioning can be performed on the basis of the characteristics of the transmission paths of the positioning signals.

The application discloses a radar antenna device and a radar element thereof. The radar antenna device, configured for installation on a side surface of a vehicle, comprises: a base having a surface; a first antenna circuit board disposed on the surface; and a second antenna circuit board disposed on the surface. Wherein a first angle is formed between the first antenna circuit board and the side surface of the vehicle, and a second angle is formed between the second antenna circuit board and the side surface of the vehicle, and both the first angle and the second angle are greater than or equal to 15 degrees and less than or equal to 25 degrees.

An antenna structure includes a first ground plane, a first capacitor, a feeding element, a dielectric substrate, and a metal cavity. The first ground plane includes a narrow edge segment and a wide edge segment. The first ground plane has a first slot. The first capacitor is coupled between the narrow edge segment and the wide edge segment. The first slot of the first ground plane is excited by the feeding element. The dielectric substrate has a first surface and a second surface which are opposite to each other. The first ground plane, the first capacitor, and the feeding element are disposed on the first surface of the dielectric substrate. The metal cavity is coupled to the first ground plane. The metal cavity is adjacent to the dielectric substrate.

High-frequency chip arrangement (100), comprising - a high-frequency chip (112) configured to transmit and receive high-frequency waves, - a cavity-enclosing first housing (114, 115) consisting of a housing cover (115) and a support substrate (114), wherein the first housing (114, 115) surrounds the high-frequency chip (112) when the housing cover (115) is attached to the support substrate (114); - wherein the high-frequency chip (112) is arranged on a top side of the substrate such that it radiates the high-frequency waves away from the substrate (114); - wherein the carrier substrate (114), the high-frequency chip (112) and the first package (114, 115) form a module (110); - a second housing (120) that surrounds at least the module (110), wherein a space (121) between the module (110) and the second housing is filled with a potting compound (104) so ​​that the module (110) is completely surrounded by the potting compound (104) and the high-frequency waves pass through the first housing (114, 115), the potting compound (104), and the second housing (120).

The present application provides a wireless transmission system that takes into account both improvement of a radio wave propagation environment and suppression of leakage of radio waves to unnecessary spaces. The wireless transmission system includes: a plurality of electromagnetic wave reflection devices provided on both sides of a passage in a traveling direction of the passage and reflecting radio waves of a prescribed frequency band selected from a range of 1 MHz or more and 300 GHz or less; and a leaky coaxial cable disposed in an area surrounded by the plurality of electromagnetic wave reflection devices provided on both sides of the passage and a ground surface of the passage and connected to a base station.

Embodiments of the present application provide a leaky wave antenna and a communication device, aiming to improve the communication performance of the leaky wave antenna. According to the leaky wave antenna provided by the present application, a waveguide structure comprises a plurality of transmission channels, a plurality of slots are formed in an array on a grounding layer, each row of slots corresponds to one transmission channel, there are a plurality of radiators, and each radiator corresponds to one slot; there are a plurality of variable impedance devices, each variable impedance device corresponds to one slot and is located on the side of the slot facing the transmission channel, one end of each variable impedance device is grounded, and the other end of each variable impedance device is connected to one bias line. By means of a bias line, the variable impedance device connected to the bias line can be controlled so as to control the radiator corresponding to the variable impedance device to emit a signal outward; moreover, each variable impedance device is connected to one bias line, so that individual control over each radiator can be achieved, allowing for individual control of the beam formed by each transmission channel, improving the communication performance of the leaky wave antenna.

The present disclosure provides an antenna device and a manufacturing method, a control method, and an electronic device thereof. The antenna device includes a first substrate structure, a second substrate structure, and a liquid crystal layer between the first substrate structure and the second substrate structure. The first substrate structure includes a first substrate and a plurality of antenna patches on a first side of the first substrate. The second substrate structure is on a side of the plurality of antenna patches away from the first substrate and includes a second substrate and a metal layer having a plurality of slits, the metal layer being on a second side of the second substrate close to the first substrate. One slit corresponds to one antenna patch. A region where a footprint of each slit on the first substrate overlaps with a footprint of the corresponding antenna patch on the first substrate is a first region. A footprint of each slit on the first substrate further includes a second region and a third region, and the first region is between the second region and the third region.

The invention relates to a buffer device (18) with at least one self-propelled shuttle (12, 30, 32) for picking up objects to be buffered, wherein each shuttle is movable along a track and comprises at least two antennas (13, 14, 29, 31, 45, 46), and with two slotted hollow waveguides (1, 2, 23, 39, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86), each comprising segments (3, 4, 5, 6, 24-28, 40-44) arranged one behind the other along the track and designed to accommodate antennas which cooperate with the respective slotted hollow waveguide in which they are accommodated for signal transmission. The first slotted waveguide operates at a first frequency. The second slotted waveguide operates at a second frequency. The first and second frequencies are different.The invention further relates to a method for operating the buffer device (18) comprising inserting the first antenna (13, 29, 31) of a self-propelled shuttle (12, 30, 32) into the first slotted hollow waveguide (1, 23), inserting the second antenna (14, 45, 46) of the self-propelled shuttle into the second slotted hollow waveguide (2, 39), operating the first slotted hollow waveguide at the first frequency, and operating the second slotted hollow waveguide at the second frequency.

This utility model discloses a leaky coaxial cable with a built-in fault detection line, including a coaxial cable body and a top connector at its end; a side threaded layer is provided on the first connecting sheath layer, and a snap-fit ​​bevel post is provided in the plug-in connecting groove; the outer layer of the coaxial cable is plugged in through the plug-fit snap-fit ​​layers on the first and second connecting sheath layers, and after snap-fit, rotation is limited by a rotating adjusting ring. When disassembly is required, the rotating adjusting ring is rotated to disengage from the compression limit, and then the plug-fit snap-fit ​​layer is pressed to move towards the position of the rotating adjusting ring to compress the snap-fit ​​bevel post inward. Then, it is rotated to a position where the snap-fit ​​bevel post is not snapped inward for disassembly. With the improvement of this utility model, a certain length of the outer sheath layer can be spliced ​​together, which can effectively replace a damaged part without replacing the whole cable, thereby effectively saving resources and improving the practicality of the leaky coaxial cable with a built-in fault detection line.

The present invention provides an antenna device that operates in the leakage wave region without forward-propagating and backward-propagating radio waves canceling each other out, even when the size is adjusted to match the tag monitoring range. [Solution] Reflectors 53 and 72 are provided at both ends of the microstrip line 60, and the unit cell 61 has a strip conductor 62 and a stub conductor 63, and is arranged so that a predetermined gap 64 is interposed between the strip conductors 62, thereby reducing the capacitance component C caused by the gap 64, etc. L The series branch circuit 61a, which equivalently includes the inductor component L caused by the stub conductor 63, etc. L The system is configured to include a parallel branch circuit 61b that equivalently includes the above, and the length of the transmission line along the predetermined direction is L ant When the wavelength of a radio wave in a vacuum is λ0, the absolute value of the effective refractive index of the transmission line is |n eff The various parameters of the unit cell 61 are set such that | is less than 1 and satisfies the above equation (1).

Provided is an antenna device comprising a dielectric substrate and a transmission line in which a plurality of unit cells are arranged in a prescribed direction at one surface of the dielectric substrate, wherein: reflectors are provided at both ends of the transmission line; each of the plurality of unit cells has a strip conductor extending in the prescribed direction and a stub conductor branched from the strip conductor; a prescribed gap is interposed between the strip conductor and the strip conductor of an adjacent unit cell; and when the length of the transmission line in the prescribed direction is Lant and the wavelength of a radio wave in vacuum is λ0, each parameter of the plurality of unit cells is set so that the absolute value |neff| of the effective refractive index of the transmission line is less than 1, and the expression |neff|<λ0／(4Lant) is satisfied.

This invention discloses a near-field antenna with high focusing characteristics based on a symmetrical rectangular leaky waveguide, relating to the field of microwave antenna technology. It includes a first short leaky waveguide unit and a second short leaky waveguide unit, both with identical structures and synchronized feed phases. The electric field vector polarization directions of the first and second short leaky waveguide units at a preset focal point S are also consistent. Through coherent superposition of symmetrical beams, the field strength amplitude at the focal point is significantly enhanced, resulting in a significant improvement in detection sensitivity. When applied to non-destructive testing of composite materials, a stronger incident field can excite stronger defect scattering signals, thereby enabling the detection of deeper and smaller internal defects. The symmetrical structure naturally compensates for the directional deviation of the unidirectional leaky wave antenna, resulting in a more uniform distribution of the focused spot in both the longitudinal and lateral directions, thus improving the spatial resolution of the detection.

A radar sensor is described that utilizes electromagnetic bandgap structures on a waveguide antenna surface. The radar sensor comprises a monolithic microwave integrated circuit (MMIC) and a printed circuit board (PCB) coupled to the MMIC. The radar sensor also includes a waveguide antenna coupled to the PCB, featuring waveguide structures extending through the antenna to a surface of the antenna, with the surface facing the PCB. The waveguide antenna also includes electromagnetic bandgap (EBG) double-post structures arranged adjacent to and flush with the broad sides of the waveguide structures on the antenna surface.

RADAR sensor assemblies / modules, particularly those for vehicles. In some embodiments, the assembly may comprise a plurality of waveguides, each waveguide of the plurality of waveguides being defined by a waveguide groove. A slot may be positioned to extend along an axis of each of the plurality of waveguide grooves. Each of the waveguides may be further defined, at least in part, by a periodic feature that extends back and forth in a periodic manner along at least a portion of its respective waveguide and a plurality of periodic signal confinement structures, a first periodic signal confinement structure of which may extend adjacent to a first side of each of the plurality of waveguides, and a second periodic signal confinement structure which may extend along a second side of each of the plurality of waveguides opposite the first side.