20 results about "Waveguide antennas" patented technology

The embodiment of the application relates to the technical field of communication, and discloses an antenna array and a communication device, the antenna array comprises a bearing base body, a waveguide antenna unit, a choke component and a feeding structure, the waveguide antenna unit comprises a plurality of first antenna elements and a plurality of second antenna elements, the first antenna element comprises a first rectangular waveguide cavity and a first radiation aperture arranged on the first rectangular waveguide cavity, the second antenna element comprises a second rectangular waveguide cavity and a second radiation aperture arranged on the second rectangular waveguide cavity, and the choke component is arranged on the waveguide antenna unit. In the above manner, the embodiment of the application can effectively constrain electromagnetic waves to propagate in a specific path, can significantly improve energy transmission efficiency compared with an open radiation structure, effectively suppresses array interference, and provides a high-performance antenna for a 72-78 GHz frequency band communication system.

The present disclosure relates to a radiation assembly, a waveguide antenna sub-arrays, and a waveguide array antenna. The radiation assembly for the waveguide array antenna comprises: a first radiation layer having a plurality of first radiation windows, each of the plurality of first radiation windows has a metal grid to divide the first radiation window into two radiation holes; and a second radiation layer having a plurality of second radiation windows, the plurality of second radiation windows correspond to the plurality of first radiation windows one to one, and the plurality of second radiation windows of the second radiation layer do not have any metal grid, wherein the thickness of the second radiation layer is greater than the thickness of the first radiation layer, and wherein the first radiation layer and the second radiation layer are manufactured independently of each other. The radiation assembly can enhance the polarization purity of the aperture radiation of the waveguide array antenna to which it belongs, so as to achieve a higher antenna cross polarization index.

The utility model relates to a kind of gap waveguide antennas, involve vehicle-mounted radar field.The first structural member of this technical solution is provided with chip interface connected with chip;Second structural member is located above it, is provided with first enclosure wall and first metal column periodically arranged on first enclosure wall, and waveguide transmission channel is formed with the corresponding side surface of first structural member, and the first impedance matching junction corresponding to chip interface is respectively arranged in the inside of channel two ends, and second impedance matching junction and antenna interface;Third structural member is above second structural member, is provided with second enclosure wall and second metal column periodically arranged on second enclosure wall, and antenna radiation cavity is formed with the corresponding side surface of second structural member, and gap radiation port is arranged in the inside of cavity.In this case, the height of metal column is only one tenth to one fourth of wavelength in working frequency band, compared with traditional gap waveguide, it is easier to process, and it is not easy to damage;While simple structure, it can improve the redundancy of assembly error, and the antenna structure also has lower side lobe level.

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 invention discloses a yield detection device and detection method based on a packaged waveguide antenna, and relates to the technical field of antenna detection devices.The yield detection device comprises a conveying mechanism and a detection box installed on the conveying mechanism and used for detecting the packaged waveguide antenna, and the detection box comprises a hemispherical cover rotationally arranged in a box body, low-speed and constant-speed rotation is driven by a driving structure; the plurality of standard detection antennas are fixed on the hemispherical cover in a penetrating manner, and the plurality of standard detection antennas are uniformly dispersed and distributed on the longitude line and the latitude line of the hemispherical cover; according to the detection box, a to-be-detected packaged waveguide antenna is covered by a hemispherical cover of a hemispherical structure, a plurality of standard detection antennas are arranged according to a set track, and rotation of the hemispherical cover is further combined, so that a small number of standard detection antennas can cover a large number of space detection points in a three-dimensional space, dense layout of the standard detection antennas is not needed, and the detection efficiency is improved. And signals sent by the packaging waveguide antenna can be comprehensively collected and detected.

A circuit assembly includes a packaged electronic device having a radio frequency (RF) contact and a shield contact. The circuit assembly additionally includes a substrate coupled to the packaged electronic device and at least partially containing an internal conductive structure electrically coupled to the RF contact and an external conductive structure electrically coupled to the shield contact, the internal and external conductive structures forming a vertical coaxial structure through the substrate. The circuit assembly additionally includes a waveguide antenna electrically coupled to the coaxial structure on a side of the substrate opposite the packaged electronic device. Further embodiments are directed to a device suitable for use in a circuit assembly as described above.

The application belongs to the technical field of antennas, and discloses a waveguide antenna and a radar system. The application provides a waveguide antenna. The waveguide antenna comprises an antenna body, an antenna unit and a separation structure. The antenna unit is arranged on the antenna body, and the antenna unit has a radiation port on a radiation surface of the antenna body. The separation structure is arranged on the antenna body and at least partially protrudes from the radiation surface. The antenna unit is correspondingly provided with one separation structure. The orthographic projection of the separation structure on the radiation surface along a first direction divides the radiation port into two symmetrically arranged sub-radiation ports. The first direction is perpendicular to the radiation surface. The size of the part of the separation structure protruding from the radiation surface in the first direction is h, and the following condition is met: h 2 ≥ λ 2 -d 2 / 4. λ represents the wavelength corresponding to the working frequency of the waveguide antenna, and d represents the size of the radiation port in a second direction. The waveguide antenna and the radar system provided by the application can be applied to a scene with low energy requirement in the front direction and high energy requirement on the left and right sides.

The invention relates to a shielding device (100), wherein the shielding device (100) has at least one printed circuit board (102), electronic components (104) attached to the printed circuit board (102), a waveguide antenna (106) attached to the printed circuit board (102), and a metal heat distribution element (108), wherein the metal heat distribution element (108) is electrically conductively connected to the waveguide antenna (106), and wherein the waveguide antenna (106) and the metal heat distribution element (108) enclose the electronic components (104) attached to the printed circuit board (102) and are designed such that a Faraday cage (110) results from the waveguide antenna (106) and the metal heat distribution element (108).

This utility model discloses a waveguide antenna and a vehicle-mounted radar, comprising: a carrier; a carrier having a connected radiating slot and a waveguide cavity inside; the radiating slot is a molded cavity, comprising multiple sequentially connected radiating sub-slots; the waveguide cavity has a metal ridge; the waveguide cavity is a molded cavity, comprising a feed cavity and a power divider cavity; the power divider cavity comprises multiple sequentially connected sub-cavities; the feed cavity, sub-cavities, and radiating slots are connected from bottom to top; wherein, the multiple sub-cavities and the metal ridge constitute a one-to-many power divider, and the number of output paths of the one-to-many power divider is the same as the number of radiating slots and corresponds one-to-one. This technical solution sets the radiating slot and waveguide cavity as molded cavities, so that there is a parting line between the waveguide cavity and the radiating slot. Therefore, this waveguide antenna can be manufactured using a double-layer mold, and the resulting waveguide antenna has low cost, small error, and high signal transmission accuracy.

This invention relates to a waveguide antenna, comprising a waveguide channel, the waveguide channel including a waveguide input cavity, a waveguide power divider cavity, a T-ridge power divider, and multiple radiation slots. The waveguide power divider cavity extends from the distal end of the waveguide input cavity to both sides. The T-ridge power divider is placed within the waveguide input cavity and the waveguide power divider cavity and integrates impedance adjustment and power division. The multiple radiation slots communicate with the waveguide power divider cavity and are positioned above the waveguide power divider cavity.

An interface device for performing off-chip coupling in optical waveguides includes an optical waveguide core for propagating light of a particular wavelength or a plurality of wavelengths and an array of radiative elements configured to change the propagation direction of the light. The optical waveguide core is configured to control the effective refractive index of the propagation mode of the light. The device can thus serve as an optical antenna for coupling between a waveguide mode and a free-space propagating beam or a plurality of free-space propagating beams in an arrayed configuration.

A waveguide antenna has a plurality of waveguide channels. Each waveguide channel is formed by a lateral wall structure and is arranged to couple out electromagnetic waves from an open output region of the waveguide channel. For each waveguide channel, a circumferential air slot is configured in an outer region of the lateral wall structure. Air slots of adjacent waveguide channels share a common air slot section.

This invention discloses a gapped waveguide antenna array, a frequency tuning kit, and a frequency correction method. The gapped waveguide antenna array includes a gapped layer that transitions from a first surface to a second surface along its thickness direction. The gapped layer has coupling holes. Both the first and second surfaces are provided with frame borders and multiple pins. A first cover plate is connected to the frame border of the first surface and has a radiation window. A second cover plate is connected to the frame border of the second surface and has a waveguide window. Multiple tuning dielectric blocks are included and can contact the pins of the gapped layer. The tuning dielectric blocks are replaceable. By providing replaceable tuning dielectric blocks, the frequency offset of the entire gapped waveguide antenna array can be adjusted according to actual conditions. Therefore, even if thermal or mechanical deformation occurs in the waveguide structure during production or use, the frequency offset can be compensated for later, maintaining high stability and reliability of the system.

This utility model belongs to the field of radar technology and discloses a waveguide antenna and radar. The waveguide antenna includes an antenna body, a raised structure, and a radiating slot group. The raised structure is disposed on a first surface of the antenna body and has a ramp surface and a back slope surface, with the ramp surface facing the target. The radiating slot group includes a cavity and radiating slots. The cavity is disposed in the antenna body, and the radiating slots include a first sub-slot disposed in the cavity and a second sub-slot disposed on the ramp surface. The first sub-slot communicates with the cavity and the second sub-slot. The waveguide antenna and radar provided by this utility model can reduce interference between waveguide antennas, improve the anti-interference capability of the waveguide antenna, and ensure the angle measurement accuracy of the waveguide antenna.

A waveguide antenna comprising a waveguide body element (10) made of a solid material and a layer (20) of a conductive material covering at least a portion of a surface of the waveguide body element (10) and being provided with at least one aperture (21) for transmitting and / or receiving electromagnetic waves, wherein the waveguide body element (10) is provided with at least one cavity (30) adjacent to the at least one aperture (21), the at least one cavity (30) being open into the at least one aperture (21).

The application discloses a waveguide antenna weld defect detection method, device, equipment and medium. The method comprises the following steps: X-ray scanning is performed on a waveguide antenna weld area to obtain a plurality of first data; computer tomography reconstruction is performed on the plurality of first data to obtain a plurality of second data; weld area segmentation is performed on the plurality of second data to obtain third data corresponding to each second data, which indicates the area where the waveguide antenna weld exists; according to the plurality of second data, the third data corresponding to each second data and a preset defect feature, the second area of each second data and the corresponding defect type are determined; according to the second area of each second data and first information, the third area of each second data, i.e. the area where the defect exists inside the waveguide antenna weld, is determined; and according to the third area of each second data and the defect type corresponding to each third area, a defect detection report of the waveguide antenna weld is generated. The application can improve the accuracy and reliability of waveguide antenna weld defect detection.

The application discloses a waveguide antenna assembly precision visual calibration method and system, and belongs to the technical field of waveguide antenna assembly. In the state that the waveguide antenna and the docking component are not in contact, a multi-view high-resolution industrial camera and a structured light projection are used to synchronously collect a waveguide flange surface image, and a three-dimensional appearance is reconstructed through phase demodulation; based on the image and the point cloud, a port center axis, a waveguide flange surface normal vector and a positioning reference are extracted, and flatness and edge continuity are calculated; geometric features are matched with a standard assembly model, a six-degree-of-freedom pose deviation is solved through singular value decomposition, visual guidance instructions are generated according to a preset tolerance threshold, a closed-loop dynamic calibration is driven by an adjustment platform, and the process is paused when there is an edge defect. The application changes the assembly calibration from a posteriori mechanical contact to a prospective geometric alignment based on visual detection, realizes intelligent assembly of non-contact real-time guidance, and significantly improves the assembly precision and consistency of the waveguide system.

The utility model discloses a simple, efficient, broadband's waveguide structure of polarization orthogonal conversion belongs to waveguide antenna technical field, including waveguide conversion device, and waveguide conversion device includes H face waveguide transmission line, polarization orthogonal torsion ware and E face waveguide transmission line. Through above -mentioned mode, polarization orthogonal torsion ware changes waveguide transmission line of transmission horizontal polarization electromagnetic wave into waveguide transmission line of propagation vertical polarization electromagnetic wave, and the same reason can also realize vertical polarization becomes horizontal polarization, and the electromagnetic wave of H face waveguide transmission line transmission can be converted into vertical polarization electromagnetic wave through polarization orthogonal torsion ware and can be transmitted in H face waveguide transmission line, wherein H face waveguide transmission line and cavity antenna, slot antenna are connected, and this connecting mode not only can reduce the profile height of waveguide antenna, reduce the space occupied, and still can reduce the processing difficulty of waveguide antenna, improve production efficiency, reduce production cost.