415 results about "Waveguide antennas" patented technology

The invention relates to a vehicle-mounted radar waveguide antenna structure, which is a waveguide processing piece formed by splicing an upper waveguide processing piece (51) and a lower waveguide processing piece (52) up and down, a first waveguide transmission cavity (1), a waveguide antenna cavity structure, an electromagnetic band gap structure (3) and an electromagnetic band gap avoiding area (4) are arranged in the upper waveguide machining part (51) and the lower waveguide machining part (52). Compared with a conventionally-designed terminal open-circuit waveguide antenna, the vehicle-mounted radar waveguide antenna structure has the advantages that splicing of two layers of waveguide pieces can be achieved, complex waveguide structures are horizontally laid through reasonable design, the distribution characteristics are simplified as much as possible while splicing of the two layers of waveguide pieces is achieved, the machining difficulty is greatly reduced, and the cost is reduced. The cost is reduced while the performance of the commercial vehicle-mounted radar is improved, and the influence of waveguide piece machining errors on the performance can be reduced while the wide impedance bandwidth is kept.

A waveguide antenna system, includes: an electromagnetic, EM, transition portion having a transition region having a signal feed interface and an open waveguide section, the EM transition portion configured to couple EM energy from the signal feed interface to a guided waveguide mode of EM energy to the open waveguide section via the transition region; and a leaky waveguide antenna portion configured and disposed to radiate electromagnetic energy received from the open waveguide section; wherein the EM transition portion is electromagnetically coupled to the leaky waveguide antenna portion, the EM transition portion being configured to support a transfer of electromagnetic energy from a signal feed structure to the leaky waveguide antenna portion.

The embodiment of the utility model 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 discloses a millimeter wave waveguide antenna, which comprises a first metal layer; the second metal layer is arranged on one side of the first metal layer and attached to the first metal layer, and the antenna is characterized in that a waveguide transmission groove and beam width limiting grooves formed in the two sides of the waveguide transmission groove are formed in the side, facing the first metal layer, of the second metal layer; a plurality of radiation slots are formed in the positions, corresponding to the waveguide transmission grooves, of the first metal layer, and limiting slots corresponding to the beam width limiting grooves are formed in the positions, located on the two sides of the radiation slots, of the first metal layer; a waveguide blocking groove is further arranged between the second metal layer and the first metal layer, the wave beam width limiting groove and the waveguide transmission groove are surrounded by the waveguide blocking groove, and the waveguide blocking groove and the first metal layer form a waveguide blocking cavity used for preventing electromagnetic waves from leaking from a gap between the first metal layer and the second metal layer. The waveguide antenna can solve the problem that the existing waveguide antenna which is assembled in a layered mode and is simple in structure is poor in gap tolerance.

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 invention relates to a single-layer waveguide antenna structure which is formed by splicing a PCB main board and a waveguide board, a stand column-mushroom pin composite structure is arranged in the single-layer waveguide antenna structure, mushroom pins are arranged in the PCB main board, stand columns are arranged in the waveguide board, and a transmission waveguide wall, a radiation waveguide wall and a grounding layer are further arranged in the PCB main board; a transmission waveguide cavity and a radiation cavity are also arranged in the waveguide plate; the transmission waveguide wall, the mushroom pin, the transmission waveguide cavity and the stand column form a closed waveguide cavity, and the transmission waveguide wall serves as a bottom H face of the waveguide cavity, so that a single-layer waveguide antenna structure is achieved. By the adoption of the single-layer waveguide antenna structure, the bottleneck problems of high-frequency signal reflection loss, adjacent channel coupling crosstalk and the like caused by a heterogeneous material interface and sensitive assembly tolerance between a traditional waveguide system and a PCB are solved, the number of stand columns in a waveguide plate can be effectively reduced, and the manufacturing difficulty of the waveguide plate can be simplified.

The invention relates to the technical field of waveguide antennas, and particularly discloses waveguide antenna plate polishing equipment and method. The problem that in the prior art, polishing uniformity is poor is solved. Comprising a rack, a polishing station and a polishing assembly, and the polishing station can clamp a waveguide antenna plate and has at least two-degree-of-freedom movement; the polishing assembly is arranged on one side of the polishing station through the mounting assembly and can make contact with the surface of the plate in the vertical direction. The polishing station rotates through the rotating assembly, and the supporting frame moves based on the first moving assembly. And the position of the polishing assembly is adjusted through the second moving assembly, and the polishing assembly is hung on a rotatable second carrying frame so as to achieve high-precision polishing of different areas. And an automatic feeding assembly is further arranged and comprises a grabbing part and a conveying mechanism, and the production efficiency is improved. The polishing method comprises the steps of feeding, fixing, position adjusting and polishing according to preset parameters. According to the equipment and the method, automatic polishing is realized, the uniformity is improved, and the processing quality of the waveguide antenna plate is improved.

The invention 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, a second E-plane feeder, 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 equant feed scheme has the advantages of wide working bandwidth, symmetrical directional diagrams, flexible change of the physical aperture of the antenna and the like, the problem of more pain points can be solved, the feed network of feed is more compact by optimizing impedance matching, the scheme has a larger application scene, and in the aspect of implementation, the application range of the antenna is widened. 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.

A metallic waveguide antenna comprising a waveguide having a waveguide through hole adapted to guide electromagnetic waves; and a dielectric fixture made of a material with a low electrical permittivity attached to a front portion of said waveguide and having a fixture through hole aligned with the waveguide through hole of the attached waveguide.

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 utility model provides a multi-fold radiation slot and a waveguide antenna. The multi-fold radiation slot comprises an upper-layer radiation slot, a transition radiation slot and a lower-layer radiation slot, the upper-layer radiation groove penetrates through the outer surface of the waveguide antenna body, the lower-layer radiation groove is communicated with a waveguide cavity in the waveguide antenna body, and the upper-layer radiation groove and the lower-layer radiation groove are arranged in an offset mode in the direction perpendicular to the top face of the waveguide cavity; and the corresponding side walls of the upper-layer radiation slot and the lower-layer radiation slot are connected through a flat side wall which is obliquely arranged on the transition radiation slot. The multi-fold radiation slot disclosed by the utility model comprises the upper-layer radiation slot, the lower-layer radiation slot and the transition radiation slot, and the upper-layer radiation slot and the lower-layer radiation slot which are arranged in an offset manner are connected through the flat side wall which is obliquely arranged on the transition radiation slot, so that the problems of difficult connection and difficult signal transmission of the upper-layer radiation slot and the lower-layer radiation slot are solved.

The embodiment of the utility model relates to the technical field of electronic devices, provides a waveguide antenna, a waveguide antenna assembly, a radio frequency device, a radar and electronic equipment, and can realize signal transmission between the waveguide antenna and a chip without arranging an additional conversion structure, thereby greatly reducing the structural complexity and the production cost. The waveguide antenna comprises a plurality of waveguide interfaces arranged in an array, and the adjacent waveguide interfaces are orthogonally arranged; the waveguide interface comprises a single ridge-shaped waveguide port, and the single ridge-shaped waveguide port is used for transmitting radio frequency signals radiated and / or received by the waveguide antenna.

A radar apparatus. The radar apparatus includes a printed circuit board and a signal generating circuit which is disposed at least indirectly on the printed circuit board, is electrically coupled to the printed circuit board, and is configured to generate a radar signal. The radar apparatus additionally includes a waveguide antenna device which is disposed at least indirectly on the printed circuit board and is at least partly formed on the basis of injection-molded plastic. The radar apparatus additionally includes a waveguide coupling device, wherein the signal generating circuit is disposed on or in the waveguide coupling device, and the waveguide coupling device is configured to couple the radar signal generated by the signal generating circuit into the waveguide antenna device.

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 low-loss W-waveband radio frequency module based on LoP packaging, the radio frequency module comprises a PCB substrate, and a control module, a local oscillator chip and a transmitting / receiving module which are arranged on the PCB substrate, and the transmitting / receiving module comprises a LoP packaging frequency conversion chip and a 3D waveguide antenna. According to the W-waveband radio frequency module, W-waveband high-frequency-band signal output can be achieved, and the blank of mass-produced chip products used in a W-waveband high-frequency band of a millimeter wave radar system is filled up; according to the invention, the LoP packaging frequency conversion chip is combined with the 3D waveguide antenna, so that the transmission loss is effectively reduced, and the SNR (Signal to Noise Ratio) is improved; the overall transmission path of the radio frequency module is mainly based on a 3D waveguide cavity, and the transmission path is extremely short only on a PCB, so that the PCB does not need to use expensive high-frequency low-loss plates, and the cost is effectively reduced.

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.

The invention discloses a gap waveguide antenna which comprises a gap waveguide antenna body, an LOP chip and a PCB, the gap waveguide antenna body and the LOP chip are located on the two sides of the PCB respectively, and a switching structure metal block is located between the gap waveguide antenna body and the PCB. A switching inlet located on one surface of the switching structure metal block corresponds to a radiation port of the LOP chip, and a switching outlet located on the other surface of the switching structure metal block is connected with a feed port of the gap waveguide antenna body. According to the gap waveguide antenna, compact chip radiation ports can be dispersedly switched, and enough multi-feed-port space is provided for application of the gap waveguide antenna; and the heat dissipation mode is good, and the failure and damage risks caused by contact between the chip and the shell are avoided.

The present invention discloses a waveguide slot antenna with a horn cavity slot, which belongs to the technical field of high-power microwave antennas. The antenna includes a radiation cavity, a feeding waveguide, and a radome, wherein the radiation cavity is composed of a plurality of slotted waveguides. The slotted waveguide has a plurality of slots with horn cavities, and the slots with horn cavities are parallel to the center line of the wide side of the slotted waveguide; a feeding slot is provided at the bottom of each slotted waveguide, and the feeding slot is a rectangular wide slot, located at the center of the slotted waveguide and passing through the feeding waveguide, and the feeding slot is perpendicular to the slot with the horn cavity. The present invention can effectively reduce the maximum electric field strength inside the antenna and improve the power capacity of the antenna, and at the same time has the advantages of low profile, light weight, easy processing and low cost.

The invention discloses a waveguide power dividing device with a ridge on an H surface and a waveguide antenna, and belongs to the technical field of antennae, the waveguide power dividing device comprises a waveguide power divider, the waveguide power divider adopts a T-shaped structure, the waveguide power divider is provided with a waveguide transmission line, a branch waveguide A and a branch waveguide B, and the ridge is arranged on the H surface of the waveguide power divider; the feed end of the waveguide transmission line is used for feeding, the radiation end of the branch waveguide A and the radiation end of the branch waveguide B are used for radiation, and the electric fields of the radiation end of the branch waveguide A and the radiation end of the branch waveguide B are in the same phase. According to the invention, the problem that the directions of electric fields are opposite when H-plane waveguide feed passes through a one-to-two power divider is solved. According to the waveguide antenna, the waveguide power divider with the H face and the ridge is adopted, the complex structure of waveguide E-to-H is simplified, and meanwhile the profile of the antenna can be further reduced; the waveguide antenna provided by the invention has the characteristics of ultra wide band, wide beam, low side lobe and the like.

The invention discloses a hollow waveguide antenna based on an LOP chip, which comprises a hollow waveguide antenna body, an LOP chip and a PCB, and is characterized in that the hollow waveguide antenna body and the LOP chip are respectively positioned on the same side of the PCB; the PCB is located between a switching structure metal block and the hollow waveguide antenna body, the switching structure metal block is attached to the copper surface of the PCB, and the LOP chip is wrapped by the hollow waveguide antenna body; the surface, facing the PCB, of the switching structure metal block is provided with a switching inlet corresponding to a radiation port of the LOP chip, and the position, right facing the PCB, of a switching outlet located in the same surface with the switching inlet is provided with a PTH hole which is connected with a feed port of the gap waveguide antenna on the other side. According to the gap waveguide antenna, compact chip radiation ports can be dispersedly switched, and enough multi-feed-port space is provided for application of the gap waveguide antenna; and the heat dissipation mode is good, and the failure and damage risks caused by contact between the chip and the shell are avoided.

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 invention provides a single-layer waveguide structure suitable for waveguide signal feed-in and a waveguide transmission line, and the structure comprises a PCB mainboard which is provided with a signal transmission bottom surface and a substrate integrated waveguide; the signal transmission bottom surface is used for being combined with a single-layer waveguide to form a waveguide cavity, and the signal transmission bottom surface forms an H-surface bottom surface of the waveguide cavity; a coupling slot is arranged in the substrate integrated waveguide area, and the coupling slot generates or receives a radio frequency signal fed in perpendicular to the tail end of the bottom surface of the H surface of the waveguide cavity. The upper-layer metallization surface of the PCB mainboard serves as the bottom surface of the H surface of the waveguide cavity, so that a single-layer structure of the waveguide antenna is realized, the structure is more compact, the process is simpler, and the material cost is lower.

The invention provides a signal feed-in structure suitable for a waveguide and a waveguide transmission line, and the structure comprises a PCB mainboard and a waveguide antenna, and the waveguide antenna is provided with a waveguide cavity. A substrate integrated waveguide is formed on the top surface of the PCB mainboard, a coupling slot is formed in the substrate integrated waveguide area, and the waveguide cavity is located at a feed-in port of the bottom surface of the H surface and covers the coupling slot. The signal is fed into the waveguide in a manner of being vertical to the bottom surface of the waveguide H surface through the conversion structure of the coupling slot, so that the problem that the signal fed into the bottom surface of the waveguide H surface from the substrate integrated waveguide is difficult to excite is solved.

The invention discloses a waveguide horn antenna and a millimeter wave radar system, relates to the technical field of antennas, realizes the design of a waveguide antenna scheme and a radar through a step structure which is easy to process and realize, and compared with most schemes at the present stage, has the advantages of fewer processing layers, no waveguide power divider structure in the antenna, suitability for large-scale mass production with lower cost, and low cost. In addition, by designing a cross array air slot structure and an H-shaped array air slot structure, azimuth angle measurement fluctuation and channel consistency fluctuation are improved.

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.

According to the connecting assembly and the waveguide antenna applying the connecting assembly, the connecting assembly comprises a first connecting surface, a second connecting surface and a connecting sealing piece, and the first connecting surface and the second connecting surface are oppositely arranged and are fixedly connected through the connecting sealing piece; the first connecting face is provided with a protruding part, the protruding part abuts against the second connecting face to form a gap, and the gap is filled with the connecting sealing piece to connect the first connecting face and the second connecting face. The connecting assembly can effectively solve the problem of poor performance caused by the fact that connecting or welding quality is affected by connecting gaps and filling sealing pieces existing in current production, so that the production yield is effectively improved, the production cost is reduced, and the production efficiency is improved.