176 results about "Waveguide antennas" patented technology

The embodiment of the invention relates to the technical field of semiconductors, and discloses a radio frequency module, radar and electronic equipment, the radio frequency module comprises a chip packaging body, the chip packaging body is provided with at least one radiation part, and a plurality of salient points are arranged around the radiation part and form a first waveguide channel; a second waveguide channel is arranged at the position, corresponding to each first waveguide channel, of the PCB carrier plate; the waveguide antenna is provided with at least one antenna unit and a third waveguide channel; wherein the first waveguide channel, the second waveguide channel and the third waveguide channel are communicated to form a radio frequency signal transmission channel. According to the scheme, the loss of the module on the feeder line can be effectively reduced, and the waveguide antenna is externally connected to the PCB, so that replacement is convenient to realize.

The invention relates to a double-ridge waveguide antenna array applied to satellite communication, and relates to the technical field of antennas. The antenna comprises a horn radiation layer, a waveguide transmission layer, a low-frequency feed layer and a high-frequency feed layer which are sequentially arranged in the stacking direction. The low-frequency feed layer and the high-frequency feed layer are connected with the horn radiation layer through the waveguide transmission layer and the stepped impedance conversion waveguide; the horn radiation layer comprises dual-band horn common-caliber radiation units, metal blocks and metal strips, the metal blocks and the metal strips are used for constructing ridge waveguide structures, the adjacent dual-band horn common-caliber radiation units are separated by the metal strips, and the ridge waveguide structures constructed by the metal blocks are used for loading and expanding bandwidth; according to the invention, the design complexity of double frequency bands with a large frequency ratio is effectively simplified, and the design compactness of the antenna array is improved.

A vehicular radar sensing system includes a radar sensor that includes (i) at least one transmitter that transmits radio signals, and (ii) at least one receiver that receive radio signals. The radar sensor includes a waveguide antenna and a printed circuit board (PCB) with a transmitter pad and a receiver pad. The transmitter transmits radio signals to the transmitter pad, and the receiver receives radio signals from the receiver pad. The PCB includes a ground plane layer and a plurality of conductive elements that at least partially surrounds at least the transmitter pad. The plurality of conductive elements electrically connects the waveguide antenna to the ground plane layer and attaches the PCB to the waveguide antenna. The waveguide antenna (i) guides the transmitted radio signals from the transmitter pad to the exterior environment and (ii) guides reflected radio signals from the exterior environment to the receiver pad.

The utility model provides a waveguide antenna structure with a frequency selective surface structure and a waveguide radar, and the structure comprises a waveguide antenna which is provided with a waveguide slot array and a frequency selective surface structure; the waveguide slot array is arranged on the waveguide antenna in a penetrating manner, and the frequency selective surface structures are distributed on the peripheral side of the waveguide antenna; the frequency selective surface structure comprises surface structure units, and the frequency selective surface structure is formed by arranging a plurality of surface structure units. According to the utility model, the frequency selective surface structure absorbs reflection between the top surface of the antenna and the antenna housing and reduces distortion of a directional diagram; surface waves can be reduced, space coupling between the antennas is reduced, and the isolation between the antennas is improved; the beam directivity can be adjusted, and beam performance specific directivity can be shaped.

The invention discloses a waveguide antenna structure. The waveguide antenna structure comprises a chip; a PCB substrate, wherein the chip is arranged on the first surface of the PCB substrate; the radiation slot layer is arranged on the first surface; wherein the first surface is provided with a metal ground wire, and the metal ground wire is connected between the chip and the waveguide. According to the waveguide antenna structure, the metal ground wire is arranged on the first surface of the PCB substrate, and the metal ground wire is utilized to realize feeding between the chip and the waveguide, so that the waveguide and the PCB substrate can share the metal ground wire on the first surface of the PCB substrate, a feeding waveguide layer is reduced, the assembly steps are simplified, and the cost is reduced.

The present disclosure relates an antenna assembly that includes an antenna structure and a substrate. The antenna structure may be formed from a single contiguous piece of metal. The antenna structure may include at least one slot antenna formed in the single contiguous piece of metal. The substrate may include at least one dielectric layer, and a waveguide comprising a metallized cavity that extends through the at least one dielectric layer. The antenna structure may be attached to the substrate, may be disposed at an upper surface of the substrate, and may cover the metallized cavity of the waveguide. The substrate may be a printed circuit board (PCB) substrate, an in-mold electronics (IME) substrate, a molded interconnect device (MID) substrate, or another suitable substrate.

The utility model discloses a high-precision waveguide antenna calibration device which comprises an analyzer and a connecting element which are used in cooperation with each other. One side of the analyzer is connected with a containing bin in a sliding manner, and the containing bin is used for containing a connecting element; the connecting element comprises a plurality of waveguide wires matched with the analyzer, a plurality of calibration pieces matched with the waveguide wires, and an auxiliary connecting piece; the two ends of the waveguide wire are fixedly connected with a first connector corresponding to a wiring port of the analyzer and a second connector corresponding to the calibration piece respectively, and the calibration piece always tends to get close to the second connector through the auxiliary connecting piece. According to the utility model, the analyzer and the connecting element are placed together through the design of the accommodating bin, the probability that the connecting element is lost is reduced, meanwhile, the connecting element is also internally provided with the auxiliary connecting piece, the tightness and firmness of the connection between the calibration piece and the waveguide antenna are reinforced, the calibration accuracy of the analyzer through the calibration piece is ensured, and the calibration accuracy is improved. Therefore, the accuracy of antenna test calibration is ensured.

The waveguide antenna of the present invention comprises: a first dielectric layer; a second dielectric layer; a third dielectric layer laminated between the first dielectric layer and the second dielectric layer; a first conductor layer laminated between the first dielectric layer and the third dielectric layer; a second conductor layer laminated between the second dielectric layer and the third dielectric layer; and first through holes arranged in a first direction and connecting the first conductor layer and the second conductor layer, the first dielectric layer, the second dielectric layer, and the third dielectric layer extending in the first direction, at least one of the first conductor layer and the second conductor layer being provided with a groove having a void, second end portions of the first conductor layer and the second conductor layer in the first direction are located between first end portions of the first dielectric layer, the second dielectric layer and the third dielectric layer in the first direction and the groove.

The utility model discloses a millimeter wave waveguide anti-leakage interface device. The device comprises a first rectangular waveguide and a PCB substrate. A first waveguide penetrating through the PCB substrate is arranged on the first side of the PCB substrate, and the center of a first waveguide port of the first rectangular waveguide is aligned with the center of a second waveguide port, located on the first side of the PCB substrate, of the first waveguide; a periodic structure is arranged on the layer where the first side of the PCB substrate is located and surrounds a second waveguide port, and when electromagnetic waves are propagated from the first rectangular waveguide to a first waveguide arranged on the PCB substrate through the first waveguide port, the periodic structure forms an ideal magnetic wall PMC on the corresponding surface and surrounds the waveguide port, so that the electromagnetic waves are transmitted to the first waveguide through the first waveguide port. Therefore, electromagnetic waves are prevented from leaking out from gaps between the first waveguide ports, stable transmission of the electromagnetic waves between the first rectangular waveguide and the first waveguide is ensured, the complexity and production difficulty of a waveguide antenna part mold are effectively reduced, and the production cost is reduced.

A Cassegrain antenna comprises a primary reflector dish, a sub-reflector and a first waveguide antenna element disposed as a feed for the sub-reflector. The first waveguide antenna element comprises a waveguide body having a conductive back plate electrically connected to the waveguide body, a first radiator patch, a second radiator patch, and a first planar substrate carrying a ground plane. The first radiator patch, the second radiator patch and the first planar substrate are disposed within the waveguide body and substantially parallel to the conductive back plate. The ground plane comprises a slot on a first side, the first side being disposed towards the second radiator patch, and the first planar substrate carries a feed track corresponding to the slot on an opposite side of the first planar substrate to the side carrying the ground plane.

A radar device is disclosed. The radar device may include a circuit board on which a circuit element that generates or receives electromagnetic waves is placed; a waveguide antenna stacked on one surface of the circuit board, and in which a port through which the electromagnetic waves pass is through-formed; and a plurality of pins spaced apart from each other, in the form of surrounding an opening of the port, on one surface of the waveguide antenna facing the circuit board, and having a pillar shape.

The utility model discloses a waveguide antenna and a radar, and the waveguide antenna comprises a radiation layer which is provided with a first surface, a solder resist part is formed at a preset position of the first surface, and a welding area is formed in the solder resist part; the signal transmission layer and the radiation layer are arranged in a stacked mode in the first direction, the signal transmission layer is provided with a second surface, and a gap space is formed between the second surface and the first surface; the soldering tin layer is arranged in the gap space and provided with a first end and a second end in the first direction, the first end of the soldering tin layer is connected to the welding area, and the second end of the soldering tin layer is connected to the second surface. According to the utility model, the solder resist part is arranged on the radiation layer and is used as a reference mark, and the alignment between the radiation layer and the signal transmission layer can be ensured to be more accurate by accurately controlling the position and the shape of the solder resist part, so that the high-precision positioning requirement of the radiation layer and the signal transmission layer of the waveguide antenna is met.

The embodiment of the invention relates to the technical field of electronic devices, provides a waveguide antenna, a chip packaging body, a radio frequency device, a radar and electronic equipment, and can greatly reduce the number of packaged waveguide converters, thereby greatly reducing the packaging area and further greatly reducing the production cost. The waveguide antenna comprises a waveguide interface, a signal separation structure and a plurality of waveguide units. The signal separation structure is respectively connected with the waveguide interface and the plurality of waveguide units; the signal separation structure is used for receiving a plurality of first radio frequency signals transmitted by the waveguide interface, first parameters of the plurality of first radio frequency signals are different, and the plurality of first radio frequency signals are separated to different waveguide units according to the first parameters; and / or receiving a plurality of second radio frequency signals transmitted by the plurality of waveguide units, the second parameters of the plurality of second radio frequency signals being different; and transmitting the plurality of second radio frequency signals to the waveguide interface according to the second parameter.

The invention discloses a waveguide antenna switching structure and a test tool thereof, and belongs to the technical field of waveguides, the waveguide antenna switching structure comprises a bottom layer plate and a top layer plate, the middle side of the top layer plate is fixedly provided with a first rectangular protrusion, and the first rectangular protrusion is provided with a plurality of through waveguide output ports; a plurality of positioning holes are formed in the top layer plate along the diagonal positions of the first rectangular protrusions and used for fixing a waveguide antenna to be tested, so that a waveguide output port is aligned with a waveguide port of the waveguide antenna to be tested, a plurality of first threaded through holes are formed in the outer edge of the top layer plate, and a plurality of arc-shaped waveguide transmission groove lines are formed in the upper surface of the bottom layer plate. Through the mode, the test efficiency and the reliability of a test result after large-scale mass production of waveguide antennas can be improved, the production period and order delivery time of a waveguide antenna product line can be shortened, the one-to-one correspondence relation from waveguide output ports to waveguide ports and a good transmission effect can be realized, and the test efficiency and the test result can be improved. And the waveguide antenna switching structure can be quickly centered and clamped.

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 invention discloses head-mounted display equipment, and relates to the technical field of intelligent display equipment, and the head-mounted display equipment comprises a mirror frame, and a display module and an antenna which are arranged on the mirror frame; the display module comprises an optical machine module and a waveguide electrically connected with the optical machine module; the antenna and the waveguide are overlapped. According to the technical scheme provided by the invention, interference to the antenna can be effectively reduced through the antenna and waveguide overlapping layout design, and overlapping display of the display image and the real world on the eyes of a user is not influenced; the waveguide is used as the lens, and the space size of the equipment can be optimized.

The application relates to a frequency reconfiguration waveguide antenna based on bottom end metasurface switching, which comprises an antenna, a waveguide cavity and a metasurface; the antenna is a rectangular waveguide antenna; the waveguide antenna has a fixed feed port, that is, a coaxial probe penetrating through the waveguide; the waveguide antenna radiation aperture is a rectangular aperture; the metasurface is a surface attached with a special metal structure. A slide rail is embedded outside the bottom end of the waveguide, and the metasurface with a phase modulation structure can be pulled out or pushed in; by pulling out or pushing in the metasurface, the antenna has two working states, that is, working state A and working state B, which correspond to two reconfiguration frequency bands of the antenna respectively. In the application, the waveguide antenna can realize rapid reconfiguration of the working frequency through switching of the bottom end metal surface, and the radiation performance remains stable.

The utility model discloses an opposite-feed waveguide antenna array unit and a waveguide antenna array. The opposite-feed waveguide antenna array unit comprises a 180-degree E-plane power divider, a first E-plane feeder line, a second E-plane feeder line, a first E-plane-H-plane waveguide converter, a second E-plane-H-plane waveguide converter, an H-plane waveguide and a radiation slot array. The differential feed and equal feed scheme has the advantages of wide working bandwidth, symmetrical directional diagrams, flexible change of physical aperture of the antenna and the like, the problem of more pain points can be solved, a feed network for feed is more compact by optimizing impedance matching, the scheme has a larger application scene, and in the aspect of implementation, the antenna can be widely applied to the field of wireless communication. The antenna can be realized by welding after two layers of injection molding parts are metalized, and can also be realized by metalizing the same layer of injection molding parts and one layer of thin copper sheet, so that the thickness of the antenna can be obviously reduced.

This invention discloses a microwave non-contact fed strain detection sensor for metal devices, comprising a vector network analyzer and a waveguide antenna connected thereto; a metamaterial array is arranged at a relative position to the waveguide antenna, and a feeding network is arranged on the side of the metamaterial array away from the waveguide antenna; the feeding network receives signals from the metamaterial array and outputs the signals to an interdigital strain sensing probe; the metal device under test is arranged on the side of the interdigital strain sensing probe away from the feeding network; the metamaterial array includes a dielectric substrate and radiating elements arranged in a periodic array on the surface of the dielectric substrate; the radiating elements are circular ring structures with a single opening, and the opening directions of the radiating elements are consistent; this invention has a simple structure, high electromagnetic signal capture efficiency, and an output shaft with an open structure, which can improve the output efficiency by 9.8% compared with traditional feeding networks; the interdigital capacitors provided have a more compact structure, lower profile, and stronger resonance characteristics.

A waveguide antenna device, a radar system and an electronic device, the waveguide antenna device comprises a waveguide structure, the waveguide structure is provided with a transmission cavity and a plurality of radiation ports arranged along a linear direction, the waveguide structure comprises a shielding column array, and the shielding column array surrounds the transmission cavity; the waveguide structure comprises a plurality of first cylinders and a plurality of second cylinders, the plurality of first cylinders and the plurality of second cylinders are located in the transmission cavity, and the plurality of first cylinders are in one-to-one correspondence with the plurality of radiation ports and are alternately arranged on the two sides of the width direction of the corresponding radiation ports; the plurality of second cylinders are arranged at the side parts of the plurality of radiation ports in the width direction, the projection of each first cylinder in the width direction of the radiation port at least partially falls on the second cylinder, and in the width direction of the radiation port, the first cylinders are close to the radiation port relative to the second cylinders. Through the arrangement, effective radiation and beam forming of the antenna can be realized, so that the radar detection range and the angle measurement performance are improved.

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.

The invention relates to an integrated injection-molded gap waveguide antenna for a vehicle-mounted radar, which comprises an injection-molded metal structural body and a PCB substrate stacked below the metal structural body, and is characterized in that a conductive layer is arranged on the surface of the PCB substrate; the metal structure body is integrated with a radiation unit comprising a radiation cavity and a slot radiation unit array arranged at the bottom of the cavity, a resonance unit located below the radiation cavity and provided with an impedance matching part, a feeder unit connected with the resonance unit through a polarization rotation unit, and at least one electromagnetic isolation wall. And the electromagnetic isolation wall is vertically arranged between the adjacent feeder units, and the bottom of the electromagnetic isolation wall is connected with the PCB conductive layer. The invention provides an integrated injection-molded gap waveguide antenna for a vehicle-mounted radar, and solves the problems of complex manufacturing, electromagnetic leakage and high cost of a traditional structure.

The utility model provides a multimode resonant waveguide slot antenna structure and a waveguide radar, and the structure comprises a waveguide antenna which is provided with a waveguide channel; the waveguide channel comprises a waveguide input cavity, a waveguide power division cavity, a waveguide extension cavity and a multimode coupling window; the waveguide input cavity is vertically connected with the waveguide power division cavity; the plurality of waveguide extension cavities are in offset connection with the two ends of the waveguide power division cavity respectively, the waveguide power division cavity and the waveguide extension cavities are communicated through the multimode coupling window, and the opening of the multimode coupling window is smaller than the widths of the waveguide power division cavity and the waveguide extension cavities; and a plurality of radiation slots penetrate through the top of the waveguide channel. According to the utility model, the multimode coupling window is additionally arranged between the waveguide power division cavity and the waveguide extension cavity, and the opening width of the multimode coupling window is smaller than the widths of the waveguide power division cavity and the waveguide extension cavity, so that a dual-mode or multimode resonant mode is excited, and the bandwidth is greatly broadened; and the increase of manufacturing difficulty and cost caused by a complex power division structure or a power division network in the structural design is also avoided.

A method for manufacturing a component (100) of a lighting unit (120) of a vehicle. A metallized plastic waveguide antenna element (102) for a radar sensor of a vehicle is integrated into a component (100). The method comprises providing a component (100) of a lighting unit (120) made of plastic. A portion (104) of a metallized plastic waveguide antenna element (102) is provided. The provision of the portion (104) comprises metallizing a portion of the front side (106) of the component (100), the component (100) comprising the portion (104) of the metallized plastic waveguide antenna element (102) as a unitary portion.

The embodiment of the invention provides a ridge waveguide, a waveguide power divider and a waveguide antenna. The ridge waveguide comprises a waveguide body, a waveguide cavity is formed in the waveguide body, a ridge part is arranged on one cavity wall of the waveguide cavity in a protruding mode or ridge parts are arranged on the two opposite cavity walls of the waveguide cavity in a protruding mode, and a groove is formed in the ridge part in the side, away from the cavity wall where the ridge part is located, of the ridge part. Opposite arc-shaped grooves are formed in groove openings of the groove walls of the two opposite sides of the groove. According to the ridge waveguide, waveguide transmission performance can be improved, and the size of a waveguide port is reduced. According to the waveguide power divider and the waveguide antenna provided by the embodiment of the invention, the miniaturization of a feed network can be realized, and the low sidelobe of a directional diagram is realized.

The application discloses a waveguide antenna processing technology for a millimeter wave radar and belongs to the technical field of millimeter wave radars.The processing technology comprises the following steps: forming a non-metal base material through extrusion processing, and processing a plurality of signal channels on the non-metal base material, wherein each of the signal channels is in a broken line shape, one end of the plurality of signal channels is close to each other, the other end of the plurality of signal channels is parallel and spaced, and the plurality of signal channels all penetrate through the non-metal base material; coating a metal layer on the surface of the non-metal base material, wherein the metal layer is uniformly arranged on the outer surface of the non-metal base material and the inner wall of the signal channels; and performing signal attenuation testing on the waveguide antenna to ensure that the signal attenuation of the waveguide antenna is not more than 1 dB.The waveguide antenna processing technology for the millimeter wave radar provided in the embodiment of the application can not only make the waveguide antenna have the non-metal weight, but also achieve the conductive performance of the metal.

The invention relates to a method for manufacturing a waveguide antenna (1), in which at least one antenna section (2a, 2b) of the waveguide antenna (1) is placed in a mold (3) and a casting material (4) is fed into the mold (3). The invention further relates to a waveguide antenna (1).

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 light and thin substrate integrated waveguide antenna with high gain and oblique front detection, which comprises a radiation slot array layer, a substrate integrated waveguide layer, a metal floor and a coaxial line inner core electrically connected with the radiation slot array layer, the radiation slot array layer is a copper foil layer etched with slot arrays and comprises two slot arrays which are arranged in parallel, each slot array comprises a plurality of slots which are uniformly arranged at intervals, the positions of the slot arrays are arranged corresponding to the one-to-two waveguide cavities of the substrate integrated waveguide layer, and the slot arrays are arranged in parallel. And the coaxial line inner core vertically passes through the substrate integrated waveguide layer and the metal floor from top to bottom and is arranged in an insulating manner. The substrate integrated waveguide antenna is light and thin in structure, small in size and high in gain, has the characteristic of oblique detection, and can be installed on the side face of a mobile carrier to detect the forward direction.