245 results about "Waveguide antennas" patented technology

The invention discloses a millimeter wave circular polarization ridge gap waveguide antenna. The waveguide antenna comprises a feed waveguide layer, a waveguide gap layer, a grating lobe suppressor, a polarization converter and a radiation cavity layer which are sequentially stacked from bottom to top. The waveguide antenna adopts an interdigital ridge structure, so that electromagnetic wave leakage radiation can be effectively inhibited, the stability of the working mode of the antenna unit is ensured, and the isolation of the antenna in a large-scale array is enhanced; the feed waveguide layer and the waveguide slot layer are spliced to form the interdigital ridge structure, the production and assembly process is simple, the welding process is omitted, and the production cost is reduced; left-hand circular polarization or right-hand circular polarization can be switched on the polarization converter by changing the orientation of the cross-type gap. By feeding from the two ends of the feed waveguide layer, a dual-circular-polarization working mode can also be realized; by adjusting the size of each slot on the waveguide slot layer, the flexibility of grating lobe suppression can be improved, and the side lobe level of the antenna can be reduced. The invention relates to the technical field of antennas.

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.

A waveguide antenna and a related device relate to the technical field of millimeter wave radars. The waveguide antenna comprises at least one power division unit and N waveguides, the at least one power division unit is used for dividing a first signal from a radio frequency chip into N paths of signals, the N paths of signals are transmitted through the N waveguides respectively, at least two waveguides in the N waveguides are different in length, and N is an integer larger than 1. The waveguide antenna can meet different requirements of different application scenes on the detection capability of the antenna at the same time.

The invention relates to the field of millimeter wave radars, and discloses a 45-degree polarized array waveguide antenna for a millimeter wave radar, which comprises a metal groove layer; a slot array element layer; the slot array element layer and the metal slot layer are connected in a vertical lamination mode; the metal groove layer is provided with a plurality of radiation grooves; radiation grooves with the same number are formed in the metal groove layer at the corresponding positions of the slot array elements; the radiation slot indirectly increases the effective radiation aperture area of the antenna. The invention provides a method for solving the problems of low array pattern sidelobe, low gain and wide beam width of the N-element waveguide array antenna in a miniaturized application scene.

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 invention discloses a waveguide antenna structure and a radar, and relates to the field of waveguide antennas. The antenna structure comprises a first substrate and a second substrate, wherein a waveguide cavity is formed by a first waveguide channel arranged on the bottom surface of the first substrate and a second waveguide channel arranged on the top surface of the second substrate; the top surface of the first substrate is provided with a plurality of rows of radiation slots, and each row of radiation slots is communicated with the corresponding first waveguide channel. The radiation slots comprise a first radiation slot and a second radiation slot; each group of first radiation slots comprises two rows of first radiation slots, a first metal ridge is arranged between two adjacent groups of first radiation slots, and a second metal ridge is arranged on the outer side of the outermost row of first radiation slots; a third metal ridge is arranged between two adjacent rows of second radiation slots, and a fourth metal ridge is arranged on the outer side of the outermost row of second radiation slots. According to the invention, the antenna beam width is widened, the beam is stabilized, and the radar can realize a large detection range.

An assembly and method of use are herein disclosed. The assembly comprises a passive guide, an antenna, and an electromagnetic absorber. The passive waveguide has a cross-section dimension, and carries an electromagnetic wave having data encoded within a carrier frequency in a range of 500 GHz to 10 THz wherein the electromagnetic wave having a wavelength. The cross-section dimension of the passive waveguide is in a range of at least 4 wavelengths to 50 wavelengths of the electromagnetic wave. The antenna receives energy from the electromagnetic wave carried by the passive waveguide. And, the electromagnetic absorber is disposed around the antenna so as to avoid interference between the electromagnetic wave and the antenna.

The embodiment of the invention provides a waveguide antenna, a detection method and a related device. The waveguide antenna comprises a waveguide cavity, a feed port and a first radiation port, the waveguide antenna is used for working in at least two working frequency ranges; a signal input by the feed port is transmitted through the waveguide cavity and radiated through the first radiation port; the radiation energy of the first radiation port in different working frequency ranges is different. Therefore, the radiation energy of the first radiation port can be changed by changing the working frequency range of the waveguide antenna to realize different detection ranges, so that the waveguide antenna of the same structure can work in different working frequency ranges to meet the detection requirements in different application scenes; and different antenna structures do not need to be designed to meet detection requirements in different application scenes, so that the complexity and the cost of a hardware structure can be reduced.

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 present application relates to a waveguide antenna, a waveguide antenna and a radar antenna, comprising: a metal body, the top surface of which extends in the horizontal direction; the power divider network is arranged in the metal body and comprises a plurality of power divider branches, each power divider branch is bent and extends along the horizontal direction, and a first polarization direction is formed at the tail end of each power divider branch; the antenna units extend from the interior of the metal body to the top surface of the metal body along a normal direction perpendicular to the horizontal direction, and the antenna units are connected to the tail ends of the power divider branches in a one-to-one correspondence manner through the polarization direction switching units; wherein the polarization direction switching unit configures the polarization direction emitted from the antenna units as a second polarization direction perpendicular to the first polarization direction, and the plurality of antenna units are arranged at intervals along the first polarization direction.

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 invention discloses a microwave heating radiation antenna design method for strengthening hydrate development, and relates to the technical field of natural gas hydrate heating strengthening yield increase. A rectangular waveguide antenna is selected as a basic structure of microwave heating radiation antenna design; a slot is formed in the outer wall of the rectangular waveguide antenna, slot parameters are designed, waveguide parameters are calculated according to the waveguide size and the working frequency, and the slot period is determined to optimize the length and the shape of the slot. The rectangular waveguide antenna is adopted as a basic structure, efficient transmission and radiation of microwave energy are achieved by optimizing slotted hole parameters, the rectangular waveguide antenna has good electromagnetic wave transmission characteristics, uniform distribution of the microwave energy in a reservoir can be ensured by combining the designed slotted hole layout, energy loss is reduced, and the energy utilization rate is improved. In the marine hydrate exploitation process, the antenna can rapidly and effectively increase the reservoir temperature, sufficient driving force is provided for hydrate decomposition, and therefore the exploitation efficiency is improved.

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.

The present invention relates to a single-layer waveguide antenna structure. In this structure, it is composed of a spliced PCB main board and a waveguide board, and a column-mushroom pin composite structure is arranged therein. Among them, the mushroom pins are arranged in the PCB main board, and the columns are arranged in the waveguide board. The PCB main board is also provided with a transmission waveguide wall, a radiation waveguide wall, and a grounding layer; the waveguide board is also provided with a transmission waveguide cavity and a radiation cavity; the transmission waveguide wall, the mushroom pins, the transmission waveguide cavity, and the columns form a closed waveguide cavity, and the transmission waveguide wall serves as the bottom H-plane of the waveguide cavity, thereby realizing the single-layer waveguide antenna structure. By adopting the single-layer waveguide antenna structure of the present invention, bottleneck problems such as high-frequency signal reflection loss and adjacent channel coupling crosstalk caused by the heterogeneous material interface and assembly tolerance sensitivity between the traditional waveguide system and the PCB are overcome, the number of columns in the waveguide board can be effectively reduced, and it is beneficial to simplify the manufacturing difficulty of the waveguide board.

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.

The present invention discloses a dielectric rod antenna based on a hybrid radiation mode and a design method thereof, comprising: a ceramic dielectric rod and a dielectric-filled rectangular open waveguide, wherein the dielectric-filled rectangular open waveguide comprises a rectangular metal open waveguide, the open waveguide is filled with a dielectric, and a matching section of the ceramic dielectric rod is embedded in the filling dielectric; an inner conductor portion of a coaxial probe is inserted into the filling dielectric, and the coaxial probe is perpendicular to the transmission surface of the rectangular metal open waveguide; in the antenna structure, the dielectric-filled rectangular open waveguide not only serves as a waveguide feeding structure, but also participates in radiation as an open waveguide antenna, and both the open waveguide antenna and the dielectric rod antenna are end-fire radiation modes; and in the low-frequency band, the antenna structure uses open waveguide radiation as the main radiation mode, and the ceramic dielectric rod is used to improve radiation directivity.

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.

The invention relates to a radar sensor (10) comprising a waveguide antenna (12) for transmitting and / or receiving radar waves (14) with respect to a sensor environment (16), with an antenna surface (20) facing the sensor environment (16) and comprising at least in sections an electrically conductive surface material (22), and with at least one antenna element (24) which is designed as at least one opening (26) in the antenna surface (20) and which lies opposite a protective component (34) arranged in the sensor environment (16), wherein the antenna surface (20) has structured reflection inhibiting means (36) which are designed to inhibit the reflection of scattered waves (38) as radar waves (14) reflected by the protective component (34) between the protective component (34) and the antenna surface (20) at least by wave interference of the scattered waves (38).