818results about "Waveguide horns" patented technology

The invention discloses a radiation-receiving type low-profile dual-beam array antenna and a folding decoupling design method. The low-profile dual-beam array antenna is composed of a transmission metasurface, a polarization conversion metasurface and a horn feed source. The transmission metasurface is formed by periodically extending and arranging m * m radiation-receiving units in a plane at equal intervals, and efficient transmission and spin decoupling focusing phase regulation and control of electromagnetic waves of a specific frequency band are achieved. The radiation-receiving unit is composed of three layers of metal and two layers of dielectric plates. The polarization conversion metasurface is formed by periodically extending and arranging n * n polarization conversion units in a plane at equal intervals, and efficient reflection, polarization conversion and wave beam non-mirror image deflection phase regulation and control of electromagnetic waves of a specific frequency band are achieved. The polarization conversion unit is composed of two layers of metal and a layer of dielectric plate. The low-profile dual-beam array antenna provided by the invention can generate two independently regulated orthogonal circularly polarized waves through spin decoupling under the excitation of a circularly polarized wave feed source, and has the remarkable advantages of high aperture efficiency, low profile and the like.

An RF-based material detection device includes an antenna connector, a first interchangeable antenna capable of being releasably coupled to the RF-based material detection device via the antenna connector, an RF transmitter unit operably connected to the antenna connector and configured to transmit an RF signal via the first interchangeable antenna into a first material at a specific resonance frequency for the first material, and an RF receiver unit operably connected to the antenna connector and configured to receive from the first material via the first interchangeable antenna a first modified signal in response to interaction of the RF signal with the first material, wherein the first interchangeable antenna includes one or more design characteristics optimized to detect the first modified signal from the first material.

A communications system may include a first electronic device and a second electronic device that communicate over a high speed short range wireless communications link. To support the link, each device includes one or more antennas that concurrently transmit(s) and receive(s) radio-frequency signals at the same frequency under an in-band full duplex (IBFD) scheme. One device may include a housing wall and a waveguide. The waveguide has an elongated portion facing the antenna(s) and a horn extending from the elongated portion. The waveguide may convey the radio-frequency signals between the antenna(s) and the other device through the wall. The waveguide may serve to mitigate signal leakage from a transmit port onto a receive port of the device while conveying wireless data over the high speed short range wireless communications link. In addition, the waveguide allows flexibility in configuring the antennas and enhances system robustness with larger alignment tolerances.

The invention discloses an interlayer luneberg lens antenna with double-frequency radiation characteristic independent adjustment capability, which comprises a first plane luneberg lens, a second plane luneberg lens and a third plane luneberg lens, and is characterized in that the first plane luneberg lens is positioned on the upper side of the second plane luneberg lens; the third plane luneberg lens is located on the lower side of the second plane luneberg lens, and the structure of the first plane luneberg lens is the same as that of the third plane luneberg lens and different from that of the second plane luneberg lens. According to the invention, by using the planar luneberg lenses with two different structures, the dual-frequency radiation characteristic and the independent adjustment capability on dual frequency bands are realized, the heterogeneous design is beneficial to realizing structure simplification, the design and processing difficulty is effectively reduced, and the influence caused by dimension errors brought by manufacturing tolerance is reduced. The antenna is widely applied to the technical field of antennas.

An RF-based material detection device includes an antenna connector, a first interchangeable antenna capable of being releasably coupled to the RF-based material detection device via the antenna connector, an RF transmitter unit operably connected to the antenna connector and configured to transmit an RF signal via the first interchangeable antenna into a first material at a specific resonance frequency for the first material, and an RF receiver unit operably connected to the antenna connector and configured to receive from the first material via the first interchangeable antenna a first modified signal in response to interaction of the RF signal with the first material, wherein the first interchangeable antenna includes one or more design characteristics optimized to detect the first modified signal from the first material.

The invention belongs to the technical field of antennas, and particularly discloses an ultra-wide-band low-profile conformal double-ridge horn antenna which comprises a plurality of antenna radiation units which are arranged in a surrounding mode in the circumferential direction of an aircraft platform and can be installed with the aircraft platform in a conformal mode, and each antenna radiation unit comprises a double-ridge assembly and a feed assembly. Wherein the double-ridge assembly comprises a first ridge unit and a second ridge unit which are symmetrically arranged left and right, the opposite inner side surfaces of the first ridge unit and the second ridge unit are of curved surface structures, and the first ridge unit and the second ridge unit jointly form a horn section at the top and a waveguide section at the bottom; and the feed assembly is arranged on the waveguide section and is used for feeding to the first ridge unit and the second ridge unit. According to the horn antenna, through the structural design, the overall structure of the antenna is relatively compact, the size is relatively small, the height and the profile size of the antenna radiation unit can be reduced through the double-ridge curved surface structural design, and meanwhile the excellent frequency band width is achieved.

Provided herein are various enhancements for radio frequency (RF) horn antenna systems and arrays. An example apparatus includes a horn antenna array formed in a single workpiece of material comprising horn antenna elements with integrated feed networks. Each of the integrated feed networks comprise a waveguide interface flange having a port, and a filter element having a serpentine cavity coupled to the port that is at least partially formed by a base section, where a separation interface is established between the base section and an attachable cap that forms a remainder of the serpentine cavity. Each of the integrated feed networks also comprise a polarizer element having a waveguide cavity that couples between the serpentine cavity of the filter element and an associated horn antenna element that forms a signal aperture.

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.

An antenna apparatus includes a board, an integrated circuit chip including a transmitting antenna and a receiving antenna and mounted on the board, a waveguide having a first aperture provided on the board side and surrounding the transmitting antenna and the receiving antenna in aperture view, a second aperture provided on a rear side with respect to the first aperture in a radiation direction of the transmitting antenna, and a first inner wall surface connecting the first aperture and the second aperture, a radio wave lens fixed to the second aperture, and a first radio wave absorber disposed on the first aperture side in a space surrounded by the first inner wall surface. At least part of the first radio wave absorber is located inside a first path of a first direct wave, and the first radio wave absorber is located outside a second path of a second direct wave.

Provided are: an antenna device in which the minimum detection distance is shortened; and a radar device.　The antenna device comprises: a waveguide having a first opening, a second opening that is larger than the first opening when observed in a planar view of the opening, and an inner wall surface connecting the first opening and the second opening; an antenna that is provided inside the first opening so as to be positioned, when observed in a planar view of the opening, inside the first opening, directed toward the inside of the waveguide; and a radio wave lens provided inside the waveguide, the radio lens having a first surface located on the first opening side and located more toward the inside of the waveguide than the first opening, a second surface located on the second opening side and located more toward the inside of the waveguide than the second opening, and an outer edge part which is sized so as to close a gap between the inner wall surface and the outer edge part when observed in a planar view of the opening.

The invention belongs to the technical field of high-orbit satellite communication. A ground station antenna S, Q, V multi-band dual-polarization feed source implementation device comprises an S-band dual-polarization feed source network, the S-band dual-polarization feed source network comprises a polarization switch, first duplexers, first sum-difference networks, a polarizer assembly and an S feed source horn, the polarization switch is connected with the two first duplexers, each first duplexer is connected with the first sum-difference network, and the S feed source horn is connected with the second duplexers. The output of one first sum-difference network is connected to a left-hand polarization port of each polarizer assembly, the output of the other first sum-difference network is connected to a right-hand polarization port of each polarizer assembly, and each polarizer assembly is connected with an S feed source horn; the Q / V frequency band feed source network comprises two second duplexers which are respectively connected with a quadrature device, a polarizer is respectively connected with the quadrature device and a tracker, and the tracker is respectively connected with a difference signal synthesis network and a Q / V corrugated horn; and the S feed source horns are arranged around the Q / V corrugated horns. And the optimal utilization effect of space and signal receiving and transmitting efficiency is achieved.

A broadband 4T4R automobile radar antenna disclosed by the present invention comprises an upper-layer radiation plate and a lower-layer feed plate, the upper-layer radiation plate is provided with a plurality of horn mouths and a plurality of EBG choke grooves, the horn mouths and the EBG choke grooves are distributed at intervals in a staggered manner, each horn mouth is internally provided with a plurality of radiation slots at unequal intervals, and the upper-layer radiation plate is provided with a plurality of feed slots. A waveguide feed port is arranged on the lower surface of the lower layer feed panel; compared with the prior art, in order to ensure the antenna gain, the choke design in the EBG form is adopted between the antenna units, the transmission of surface waves is effectively restrained, and the isolation degree between the antenna units is improved; the horizontal plane realizes a good gain effect by accurately optimizing taper pin distribution of the slot array and amplitude-phase excitation of the feed network, and has better sidelobe envelope directional diagram characteristics; and the width of the lobe on the horizontal plane is adjusted by adjusting the inclination angle of the horn mouth, so that the width reaches 63 + / -3 degrees, and the gain effect is effectively improved.

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 belongs to the technical field of wireless communication, and particularly relates to a low-profile broadband transmission array antenna based on a multi-resonant structure. The antenna comprises a multi-resonant-structure transmission array surface and a polarization torsion reflection surface. The multi-resonant structure transmission array surface is arranged above the polarization torsion reflection surface through a support frame; the multi-resonant structure transmission array surface comprises a plurality of multi-resonant structure antenna units which are periodically arranged; the multi-resonant-structure antenna unit is of a multi-layer stacked structure, sequentially comprises an upper-layer metasurface layer, an upper-layer dielectric substrate, a middle metal ground layer, a bonding layer, a lower-layer dielectric substrate, a lower-layer metasurface layer and a coaxial structure from top to bottom, and is used for conducting electromagnetic energy; a circular through hole is etched in the center of the middle metal ground layer; the polarization torsion reflection surface comprises a plurality of polarization torsion reflection surface units which are arranged periodically, and the middle of the polarization torsion reflection surface is hollowed out and used for placing a feed source horn.

An electronic device includes a routing structure, an electronic circuit, an antenna, and an RF reflector. The electronic circuit is coupled to a mounting surface of the routing structure above a circuit zone. The antenna is coupled to the routing structure in an antenna zone. The RF reflector is coupled to the mounting surface above a reflector zone. The RF reflector includes an inner boundary portion that is adjacent to the antenna zone, and a circuit-adjacent segment positioned between the inner boundary portion and the electronic circuit. At least part of an upper extent of the inner boundary portion is at a first height above the mounting surface. An upper extent of the circuit-adjacent segment is at a second height above the mounting surface that is greater than the first height. The routing structure may be a printed circuit board or a redistribution layer structure.

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.

The invention relates to the technical field of wireless communication, and particularly discloses an ultra-wideband dual-circularly-polarized horn antenna, which comprises a horn body, a feed cavity and a circular polarizer which are connected in sequence, the horn body is of a square-circle transformation structure, one end, close to the feed cavity, of the horn body is of a square structure, and one end, away from the feed cavity, of the horn body is of a circular structure. According to the invention, ultra-wideband dual-circularly-polarized radiation and reception of the antenna can be effectively realized, and the antenna has the advantages of high structural integration level, light weight, wide working frequency band (relative bandwidth 117%), high radiation efficiency, low axial ratio and the like.

For improved Ku band communications, an antenna system includes a planar antenna surface, at least one waveguide feed network, and a waveguide. The planar antenna surface is coupled to at least one port. The at least one waveguide feed network includes an H plane junction splitter and at least two E plane junction splitters. The H plane junction splitter is disposed on a channel septum in a channel. A splitter axis of the channel septum and the H plane junction splitter is rotated about a P axis. The at least two E plane junction splitters are each disposed on septum and coupled to the H plane junction splitter via the channel. The waveguide is coupled to the waveguide feed network.

The utility model relates to a broadband wide-beam horn antenna, which comprises an antenna main body, a feed port, a feed probe, a polarizer, a waveguide and a beam widening structure, the antenna body is in a cuboid shape with an opening in the upper middle end inside, through holes are formed in the left side face and the right side face of the antenna body, feed ports are connected to the through holes, feed probes are arranged in the feed ports, a polarizer is vertically connected to the bottom face inside the antenna body, and the polarizer is located between the two feed probes. The open end of the antenna main body is connected with a waveguide, and the inner diameter of the waveguide is gradually increased along the direction close to the antenna main body to form a horn shape with a big-end-down opening; the side surface of the waveguide is provided with a wave beam widening structure which extends outwards. The antenna with the structure has the advantages that the antenna with the structure can achieve the wide-beam antenna gain of 1.5 dB within + / -60 degrees and the wide-beam antenna gain of-0.5 dB within + / -70 degrees; and the working bandwidth can reach 10%. And the diameter is only 1.27 times of the wavelength of the lowest working frequency.

The invention belongs to the technical field of antennas, and particularly relates to an ultrathin full-space metasurface unit with dual-band amplitude-phase regulation and control and a multi-beam generator. In order to solve the problems that component design cost is high, unit amplitude is low, and incident wave energy cannot be efficiently regulated and controlled, the full-space metasurface unit comprises a first metal layer and a second metal layer, the first metal layer is located above the second metal layer, a dielectric plate is arranged between the first metal layer and the second metal layer, and the dielectric plate is located between the first metal layer and the second metal layer. A first C-shaped groove and a double split ring resonator are etched on the first metal layer from outside to inside in a hollowed-out manner, a second C-shaped groove and an elliptical groove are etched on the second metal layer from outside to inside in a hollowed-out manner, and the opening directions of the first C-shaped groove and the second C-shaped groove are perpendicular to each other. And the multi-beam generator is designed based on the total space metasurface unit.

The invention relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom layer dielectric substrate, a first excitation port and a second excitation port are arranged at two ends of the bottom layer dielectric substrate; the top-layer dielectric substrate comprises a +-shaped dielectric covering layer arranged at the top of the bottom-layer dielectric substrate; two ends of the parallel plate slot waveguide are respectively connected with the first substrate integrated waveguide horn and the second substrate integrated waveguide horn; two ends of the first waveguide transition structure are respectively connected with the first excitation port and the first substrate integrated waveguide horn; two ends of the second waveguide transition structure are respectively connected with the second excitation port and the second substrate integrated waveguide horn; according to the invention, large-range beam scanning including backward end radiation can be realized, high-gain single-beam scanning is maintained, the antenna has the characteristics of simple structure, easy integrated processing, high gain and full coverage of the upper half space, and the performance of a millimeter wave wireless communication system is greatly improved.

The invention provides a 45-degree polarized waveguide slot antenna, and the antenna comprises a plurality of metal layers which are seamlessly attached, and the metal layers are a radiation layer, a slot layer, and a feed waveguide layer. The radiation layer is provided with a pair of C-shaped metal walls, and the bottom of the radiation layer is provided with a plurality of horn mouths. The slit layer is provided with a plurality of inclined slits which are arranged and distributed in parallel, the included angle between the longitudinal center line of each inclined slit and the longitudinal center line of the slit layer is 45 degrees, and the plurality of inclined slits correspond to the plurality of horn mouths one by one; the feed waveguide layer is provided with a ridge waveguide resonant cavity, the inner side of the cavity side wall is provided with a plurality of convex blocks, and the center of the bottom of the feed waveguide layer is provided with periodic concave-convex ridges; one end of the narrow side of the cavity side wall is provided with a rectangular feed waveguide port. Through the antenna with the multilayer metallization structure, the radiation performance of large broadband, high gain, low side lobe and low cross polarization is realized, and the antenna can be widely applied to communication systems such as millimeter wave satellites, radars and the like.

An antenna element comprises an upper conductor, first lower conductors, second lower conductors, first leg portions, second leg portions and feeding portions. The upper conductor has a middle portion, a ring portion and coupling portions. The ring portion continuously surrounds the middle portion, and the coupling portions couple the middle portion and the ring portion to each other. The first leg portions extend from the middle portion, and the second leg portions extend from the ring portion. The first lower conductors and the second lower conductors are distinct and separated from one another and are apart from the upper conductor in an up-down direction. The first lower conductors are connected to the first leg portions, and the second lower conductors are connected to the second leg portions. The feeding portions extend from the upper conductor.

The invention provides a desensitization easy-to-process high-power millimeter wave waveguide matching load and application, the desensitization easy-to-process high-power millimeter wave waveguide matching load comprises a circular waveguide horn antenna and a high-loss dielectric block used for absorbing electromagnetic waves, and the circular waveguide horn antenna comprises a standard rectangular waveguide section, a rectangular waveguide-circular waveguide transition structure, a circular waveguide section, a conical horn and a circular waveguide section; the high-loss dielectric block comprises a bottom circular truncated cone, a middle circular truncated cone and a top circular truncated cone structure which are connected in sequence; the top circular truncated cone structure is a gradually-changing solid structure or a core-removing structure with a wedge-shaped block removed, and electromagnetic waves are fed into the circular waveguide horn antenna from the rectangular waveguide and are converted into dielectric loss by the high-loss dielectric block when reaching the tail of the horn antenna, so that incident electromagnetic energy is absorbed, and the dielectric loss of the horn antenna is reduced. The top circular truncated cone structure of the dielectric block is used for impedance matching and reflection reduction; the core circular truncated cone structure of the core-removing structure further reduces the sensitivity of the matching load performance to the precision error of the dielectric block due to the fact that the matching structure is located at the position with a weak electric field.

The invention relates to the technical field of wireless communication, and particularly discloses an ultra-wideband high-power dual-polarized horn antenna, which comprises a horn body with a ridge inside, a feed cavity arranged at the flange end of the horn body, and an N-type connector mounted on the feed cavity and connected with the ridge, the flange end of the horn body is of a quadrilateral structure; the radiation end of the horn body is of an octagonal structure, and a quadrangular structure is gradually transited into the octagonal structure in the radial direction of the octagonal structure. The antenna has the advantages of being wide in working frequency band, large in tolerance power (larger than 500 W), low in standing wave, capable of linearly increasing the gain along with the frequency and the like.

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.

The invention discloses a low-cost dual-band circularly polarized multi-beam coverage antenna based on a single-layer structure and a design method thereof. According to the antenna, a parabolic antenna and a reflective array antenna are combined, so that the original excellent radiation performance of the parabolic antenna is reserved, and coverage of a plurality of circularly polarized beams in two different frequency bands is successfully realized; the antenna structure is composed of a double-frequency double-circular-polarization horn feed source and a paraboloid type reflection array, wherein a plurality of reflection units specially customized for a K wave band and a Ka wave band are regularly embedded in the array surface of the reflection array. The antenna designed by the invention can respectively radiate two circularly polarized wave beams with different rotation directions in the K and Ka wave bands, and effectively realizes effective isolation of the transmitting and receiving circularly polarized wave beams in frequency and polarization dimensions.

The invention provides a transmission metasurface multi-subarray beam forming method and device. The device comprises a support used for supporting, a subarray type transmission metasurface module used for transmitting electromagnetic waves and achieving beam forming, a multi-feed-source antenna module used for radiating the electromagnetic waves and a multi-feed-source control module used for wavefront modulation. Through the multi-feed-source control module, the consistency of the amplitude and the phase of signals input into the horn antenna unit is achieved, the whole array is formed by splicing the transmission metasurface subarrays in the same arrangement, meanwhile, the subarrays correspond to horn antennas of the multi-feed-source antenna module in a one-to-one mode, system beam forming is achieved, and the directivity and the quality of beams are remarkably improved. According to the embodiment of the invention, multi-feed-source radiation energy is converged by using a joint subarray idea, the signal transmission intensity of the transmission metasurface is improved, and wavefront regulation and beam forming with higher gain can be realized at a 10GHz frequency.

A four element folded slot-based multiple-input-multiple-output (MIMO) antenna for use with CubeSats is described. The MIMO antenna includes a dielectric circuit board, and a metallic layer that covers a top side of the dielectric circuit board and covers a first portion and a second portion of a bottom side. A first meandering slot wraps from the top side, over the first edge and into the first portion on the bottom side. A second meandering slot wraps from the top side, over the second edge and into the second portion of the bottom side. A first feed horn is directed towards the first meandering slot. A second feed horn is directed towards the second meandering slot. A first capacitor is connected to the metallic layer across a slot section of the first meandering slot. A second capacitor connected to the metallic layer across a slot section of the second meandering slot.

The invention discloses a throwing sensor integrated with a millimeter-wave radar and a use method. The sensor comprises a shell, a millimeter-wave radar detection module and a printed circuit board, wherein the millimeter-wave radar detection module and the printed circuit board are located in the shell; wherein the millimeter wave radar detection module comprises an antenna, a radiation patch, an RDL layer and a control chip; a radiation window is arranged on the printed circuit board; the antenna is located on one side face of the printed circuit board, and the antenna and the printed circuit board are connected in an embedded mode through a first metal through hole. The radiation patch, the RDL layer and the control chip are positioned on the other side surface of the printed circuit board; the radiation patch and the control chip are located on the two side faces of the RDL layer respectively, and the radiation patch is further located in the radiation window. The RDL layer is provided with a first signal window, and the control chip is connected with the radiation patch through the first signal window. The control chip feeds power to the antenna radiation structure, so that the transmission loss is reduced, and the transmission efficiency is improved.