449results about "Waveguide horns" patented technology

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.

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.

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 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 multi-channel switching antenna based on a translation reconfigurable metasurface array, and relates to a multi-channel switching antenna design technology, in particular to a function of translation regulation and control of a beam deflection angle of a translation reconfigurable metasurface. And therefore, the functions of channel switching, dual-channel output and the like can be achieved. The multi-channel switching antenna comprises a translation reconfigurable metasurface array, a mechanical driving system, a feed circuit and a horn antenna array. The main process of the design method is that phase distribution of the translation reconfigurable metasurface is solved based on the generalized Snell law, the differential equation and the Rayleigh-Sommerfeld formula, then the metasurface unit structure and the translation reconfigurable metasurface which meet the requirements are designed through electromagnetic simulation software, arraying is conducted on the translation reconfigurable metasurface, and finally the translation reconfigurable metasurface is obtained. The multi-channel switching antenna based on the translation reconfigurable metasurface array is obtained, and the functions of channel switching, dual-channel output and the like can be achieved.

The application provides a high-precision flexible reflecting surface antenna device, which comprises a center body, an unfolding mechanism connected with the center body, an antenna arranged on the center body and a locking mechanism arranged below the center body and used for fixing the unfolding mechanism and the antenna. The high-precision flexible reflecting surface antenna device has the advantages of simple structure, small storage envelope, reliable unfolding process, high shape precision after unfolding and the like, and can meet the use requirements of Ka frequency band.

An antenna assembly is provided. The antenna assembly includes a ceramic carrier having a first surface and a second surface, the second surface being opposite the first surface. The antenna assembly further includes an antenna pattern. The antenna pattern includes a first antenna portion positioned at least partially on the first surface of the ceramic carrier. The antenna pattern further includes a second antenna portion comprising a plurality of conductive vias extending through the ceramic carrier from the first antenna portion to the second surface of the ceramic carrier.

The disclosed principles provide novel antennas and corresponding methods of manufacturing thereof. In one aspect, an antenna according to the disclosed principles have a dielectric unit. The dielectric unit may be azimuthally uniform, radially symmetric, or symmetric. The dielectric unit may include a first conducting surface, a second conducting surface, and a non-conducting aperture. The first conducting surface may be located on a first radially interior surface of the dielectric unit and have both convex and concave surfaces. The second conducting surface, oblique to an axis of radial symmetry, may extend radially outward from the axis of radial symmetry. The non-conducting aperture may be located on the radial exterior of the dielectric unit. The first conducting surface and the second conducting surface may define a dielectric volume extending radially toward and terminating in the non-conducting aperture.

A millimeter-wave antenna module includes a circuit board and a plurality of millimeter-wave antenna structures. Each of the millimeter-wave antenna structures includes a substrate assembly, a feeding opening structure, a feeding stripline, and a shielding cover. The feeding opening structure and the feeding stripline are each disposed in the substrate assembly, and a portion of the feeding stripline is exposed in the feeding opening structure. The feeding opening structure is covered by the shielding cover, a side of the shielding cover has an opening, and a height of the shielding cover is increased along a direction toward the opening. The feeding stripline is configured to emit an electromagnetic wave signal in a single and horizontal direction through the feeding opening structure and the shielding cover.

The invention belongs to the technical field of antennas, and discloses a reflection unit based on a metasurface and an array antenna thereof. Comprising a linear polarization horn antenna feed source and a metasurface reflection array. The array is composed of reflection units which are arranged periodically, and each reflection unit comprises a metal resonance layer, a dielectric substrate and a metal back plate from top to bottom. The metal resonance layer comprises a non-uniform line width structure formed by a central metal strip and two symmetrically connected arc-shaped metal arms, namely, the line width of the central metal strip is unequal to that of the arc-shaped metal arms, so that the loss of the reflection unit is effectively reduced, and coupling between amplitude and phase regulation is remarkably reduced. The reflection phase of the reflection unit is realized by adjusting the central angle corresponding to the arc-shaped arm, and the reflection amplitude is realized by adjusting the rotation angle of the whole metal resonance layer around the normal axis of the metal resonance layer. Through joint optimization of parameters and array arrangement of each unit, excellent performance of low sidelobe level, low cross polarization level and high aperture efficiency is finally realized.

The invention discloses a satellite-borne flexible coverage multi-beam antenna and a design method thereof, and the antenna is composed of a reflector and a feed source array. A beam synthesis mode of synthesizing each beam by a full-scale feed source is adopted, antenna parameter configuration is optimized, and a feed source array excitation coefficient is reconstructed to carry out beam flexible coverage design, so that the problems that a traditional satellite-borne passive antenna does not have a beam on-orbit reconfigurable capability, the number of direct radiation array antennas is large, and a system is complex are solved; in-orbit flexibility and variability of antenna coverage size, coverage shape, coverage position, beam scale and the like in a service area are met, and an antenna design theoretical method and key technical support are provided for high-flux flexible load satellites in the future.

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 invention relates to a method for manufacturing an antenna array (1000), the method comprising the following steps: additively manufacturing a first layer (1) on a manufacture support (S) in a manufacture direction (z), the first layer (1) comprising a plurality of radiating elements (10); manufacturing a second layer (2) on top of the first layer (1) in the manufacture direction (z), the second layer (2) comprising a first vertical beamforming network (20) coupled to the plurality of radiating elements (10), characterised in that the first vertical beamforming network (20) is entirely supported by the first layer (1) during its additive manufacture. The invention also relates to an antenna array (1000) obtained using the above method.

The present disclosure is directed to an antenna device (1) comprising a printed circuit board (2) and an electronic component (3) disposed on the printed circuit board (2). The antenna device (1) comprises at least two individual antenna elements (12) interconnected to the electronic component (3) and configured to transmit and receive signals. The antenna elements (12) each comprise at least one waveguide channel (9) interconnecting them in an antenna assembly (6). A first waveguide aperture (10) is disposed on a rear surface (16) of the antenna assembly (6). The first waveguide aperture (10) is interconnected to the electronic component (3) and configured to transmit and / or receive signals. A second waveguide aperture (11) is disposed on a front surface (17) of the waveguide assembly (6) and is also configured to transmit and / or receive signals.

In an embodiment of the invention, a passive beamforming wireless signal repeater includes a Rotman lens having a plurality of input ports and a corresponding plurality of output ports, each output port corresponding to an input port, each input port configured to receive a signal from an uplink antenna and apply a phase change to the signal before emitting the signal from the corresponding output port, and a frequency scanning antenna (FSA) structure comprising a first plurality slots of varying lengths configured to apply a different phase shift at each radiating slot and cause the radiated signals to combine constructively in a certain direction, the FSA configured to receive a signal from the Rotman lens and direct an output signal in a direction determined by the frequency of the signal.

The embodiment of the invention provides a horn antenna, and relates to the field of antennas. The horn antenna comprises an antenna body, the antenna body is in a horn shape, the inner side radius and the axial position of the antenna body meet the function relation of index gradual change, and a plurality of annular tables are arranged on the outer periphery of the antenna body at intervals in the axial direction of the antenna body. The horn antenna provided by the invention has the excellent radiation performance of beam equalization, low side lobe, low cross polarization and the like of a traditional inner corrugated horn antenna, but is easier to process and implement at low cost, and can also avoid the problem of breakdown between inner corrugated walls of the traditional corrugated horn antenna during high-power microwave radiation, thereby improving the electromagnetic wave radiation capability.

The application relates to the technical field of antennas, in particular to a dual-mode high-gain millimeter wave beam scanning antenna, which comprises a bottom dielectric substrate provided with a first excitation port and a second excitation port at two ends; a top dielectric substrate comprising a '+'-shaped dielectric cover layer arranged on the top of the bottom dielectric substrate; parallel plate slot waveguides connected with a first substrate integrated waveguide horn and a second substrate integrated waveguide horn at two ends respectively; a first waveguide transition structure connected with the first excitation port and the first substrate integrated waveguide horn at two ends respectively; and a second waveguide transition structure connected with the second excitation port and the second substrate integrated waveguide horn at two ends respectively. The application can realize wide-range beam scanning including backward end radiation, meanwhile, high-gain single beam scanning is maintained, the application has the characteristics of simple structure, easy integration and processing, high gain and full coverage of the upper half space, and greatly improves the performance of a millimeter wave wireless communication system.

An antenna system includes an antenna and a passive device for angular deflection of a main radiation lobe of the antenna, characterized in that the device consists of a lens, said lens having a constant thickness and having a progressive relative permittivity between an inner edge of the lens located on the side of the geometric center of the antenna and an outer edge of the lens located on the side of a periphery of the antenna, the profile of the relative permittivity as a function of distance to the geometrical center of the antenna being adapted such that the lens deflects the main radiation lobe of the antenna by a predefined deflection angle over at least a portion of an operating frequency band of the antenna.

An antenna comprises a radially symmetric dielectric unit. A first conducting surface has one of a convex and a concave surface on a first radially interior surface of the dielectric unit. A second conducting surface extends radially outward from an axis of radial symmetry. The second conducting surface is oblique to the axis of radial symmetry. A non-conducting aperture on a radial exterior of the dielectric unit, wherein the first conducting surface and the second conducting surface define a dielectric volume extending radially toward and terminating in the non-conducting aperture.

communication system arranged in a housing and comprising several communication devices (2, 4) that communicate wirelessly with each other, wherein - the multiple communication devices include a specific communication device that is arranged on a mounting surface (501); - the specific communication device has at least one antenna structure, and the at least one antenna structure contains at least one antenna (21, 41); - the at least one antenna structure is arranged between the mounting surface and a predetermined wall surface (301) of the enclosure (200), and the predetermined wall surface is one of the wall surfaces of the enclosure; - which has at least one antenna structure with an outer shell; - a gap between the outer shell of the at least one antenna structure and the predetermined wall surface of the housing is smaller than a wavelength of a radio wave used in the wireless communication of the multiple communication devices; and - the at least one antenna of the specific communication device has a directional effect in a direction parallel to the mounting surface.

A dual-polarized four-ridge horn antenna disclosed by the present invention comprises a horn section and a waveguide section, the horn section comprises a horn shell and four ridges which are located in the horn shell and have the same structure, the four ridges form a cross-shaped structure, two ridges located on the same straight line are a pair, two feeder lines are configured in the waveguide section, and the waveguide section is provided with two feed lines. The two feeder lines respectively excite the pair of ridges at the same time, so that dual polarization is realized. The two pairs of ridges are excited at the same time to realize two polarization directions at the same time, and low-frequency cut-off wavelength is effectively reduced and high-frequency cut-off wavelength is improved by means of smooth transition of the ridge waveguides, so that the bandwidth of the horn antenna is widened.

The application relates to a large-diameter high-power pseudo-Bessel beam generation method and a generation device, and belongs to the technical field of communication. The method comprises the following steps: S100, an electromagnetic beam output by a feed horn is propagated to a first reflecting surface, and a target pseudo-Bessel beam is reversely propagated to a second reflecting surface; S200, the electromagnetic beam is propagated to the second reflecting surface through the first reflecting surface, a phase difference on the second reflecting surface is obtained, and a deformation variable of the second reflecting surface is updated; S300, the target pseudo-Bessel beam is propagated to the first reflecting surface through the second reflecting surface, a phase difference on the first reflecting surface is obtained, and a deformation variable of the first reflecting surface is updated; and S400, steps S100 to S300 are repeated until the relative field distribution of the output electromagnetic beam and the target pseudo-Bessel beam reaches a stable state, and a large-diameter high-power pseudo-Bessel beam is obtained. The application can solve the technical problems of existing media loss and limited power capacity.

The invention discloses a horn antenna device with a reconfigurable wave beam and a using method thereof, and belongs to the technical field of antennae, and the horn antenna device comprises a wave same module which is relatively and fixedly arranged at the tail end of the horn antenna device; the three-axis telescopic framework is connected to the front end of the wave-same module, and the three-axis telescopic framework is at least composed of a transverse electric control telescopic component, a longitudinal electric control telescopic component and a depth direction electric control telescopic component and is used for changing the aperture and the depth size of the horn antenna; the distance feedback device is arranged at the oral surface position of the three-axis telescopic framework and is used for detecting in real time and feeding back the actual oral surface size to the control extension set; and the control extension set is electrically connected with the transverse electric control telescopic component, the longitudinal electric control telescopic component, the depth direction electric control telescopic component and the distance feedback device. The wave beam reconfigurable horn antenna device is simple and small in structure and high in structural strength, can expand various frequency bands and gains, and has high development and use potential.

The invention provides a near-field feed low-complexity reconfigurable antenna system, which belongs to the technical field of millimeter wave communication antennas and comprises a 1-bit phased array, a waveguide feed horn array and an air gap between the 1-bit phased array and the waveguide feed horn array. The 1-bit unit is composed of two magnetoelectric dipoles, and two diodes are integrated in the receiving unit to achieve 1-bit phase control. According to the 1-bit reconfigurable magnetoelectric dipole phased array disclosed by the invention, one horn mouth surface is used as a near-field feed source of the 2 * 2 magnetoelectric dipole sub-array, so that not only is the uniformity of aperture irradiation ensured through near-field coupling, but also the number of required phase shifters is reduced, and the excitation of the 1-bit reconfigurable magnetoelectric dipole phased array is conveniently realized. The waveguide phase shifter is directly integrated in the horn array antenna, by means of the working phase range wide enough, the phase shifter can effectively achieve phase distribution needed by array near-field feed, and mirror lobes in scanning beams are successfully suppressed. The reconfigurable array antenna is high in aperture efficiency, low in profile and simple in structure, and has the broadband scanning capability.

The present application relates to a horn antenna element (100), comprising: a septum polarizer (110) configured to transform a linear polarized input signal (102) into a circular polarized output signal (104) at a common port (112); and a horn radiator (120) comprising: an input geometry formed as a quad-ridge waveguide (121) to receive the circular polarized output signal (104) at the common port (112); and an aperture grid (124) to radiate a grid- based circular polarized output signal (106), wherein the septum polarizer (110) is embedded in the quad-ridge waveguide (121) at the common port (112).

Microwave antenna systems include a parabolic reflector antenna having a feed bore and a feed assembly. The feed assembly includes a coaxial waveguide structure that extends through the feed bore, a sub-reflector, and a first dielectric block that is positioned between the coaxial waveguide structure and the sub-reflector. The coaxial waveguide structure includes a central waveguide and an outer waveguide that circumferentially surrounds the central waveguide. One of the central waveguide and the outer waveguide extends further from the feed bore towards the sub-reflector than the other of the central waveguide and the outer waveguide.

The application discloses a waveguide type Ka-band horn antenna, which comprises a straight waveguide section, a feeding section, a rear feeding cover and an antenna electric connector; the inside of the straight waveguide section is a rectangular waveguide cavity without a spine structure, and a local slot is formed in the matching surface of the feeding section; a feeding structure is designed in the inside of the feeding section, and the feeding structure is a multilayer step with a local protrusion on the matching surface of the straight waveguide section; the straight waveguide section and the feeding section are combined through fasteners, and the matching end surfaces of the straight waveguide section and the feeding section are both designed with blind hole positioning pin holes; the groove of the straight waveguide section is tightly matched with the protrusion structure of the feeding section; the rear feeding cover is locally protruded, and the protrusion structure is tightly matched with the cavity of the feeding section; the antenna electric connector is fixed through double holes, and the fastener passes through the through hole of the rear feeding cover and the antenna electric connector to simultaneously fix the two on the feeding section. The scheme provided by the application can effectively guarantee the design requirements of the antenna cavity, and has low overall manufacturing difficulty and good processability.