41results about "Waveguide horns" patented technology

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 present invention relates to a frequency steered phased array antenna which adjusts beam radiation angle according to frequency for broadband electromagnetic waves, and radiates beams of uniform intensity over a broad range of angles including directly forward. The frequency steered phased array antenna according to the present invention comprises: a directional coupler including a serial feed line that is stacked in n layers and has a plurality of coupling holes formed in one direction in each of the layers; and a radiating module including n horn antennas respectively connected in correspondence to the n layers of the serial feed line, wherein the plurality of coupling holes are formed in each of the layers of the serial feed line at intervals of ¼ of the wavelength (λ) of electromagnetic waves (radio waves) supplied to the serial feed line, and the horn antennas radiate the electromagnetic waves output through the coupling holes of the serial feed line.

The application discloses a medium-gain shaped horn antenna for interplanetary exploration, comprising a radiator assembly and a waveguide assembly, wherein the radiator assembly is fixedly connected to the top of the waveguide assembly. The radiator assembly comprises a multi-degree-of-freedom choke flange, and can realize double-frequency-band, double-circular-polarization and transmit-receive shared pattern shaping performance. The radiator assembly comprises an impedance matching ring, which realizes good impedance characteristics of a small-diameter circular waveguide horn at a low frequency band, and realizes port isolation of more than 25 dB without adding a filter. The radiator assembly and the waveguide assembly are metal structures made of aluminum alloy or magnesium alloy, and the antenna has good environmental adaptability in orbit, and has the advantages of simple structure, good rigidity, high reliability and the like.

The present invention relates to a waveguide arrangement (1) for a radar sensor (16, 19a, 19b, 19c, 19d), comprising a circuit board (2) having at least one high-frequency component with at least one element for directly radiating or receiving radar signals, an antenna (3) having one or more individual antennas for transmitting and / or receiving radar signals with a definable wavelength, wherein the antenna (3) comprises at least one waveguide (4a, 4b) which is bounded by several side walls, and at least one side wall is formed by the circuit board (2) and the side walls comprise a metal layer, in particular a metal coating, wherein at least one recess (5) is provided in at least one side wall of the waveguide (4a, 4b), and a fence structure (6) is provided which is arranged around the recess (5).

To achieve a slot array antenna capable of facilitating manufacturing.SOLUTION: A slot array antenna 4 including a radiating plate 2 and a base plate 1 is provided. The radiating plate 2 has a first surface having a plurality of slots 22 radiating radio waves and a horn shape with both sides of the first surface curved in a shorter side direction. The radiating plate further has first and second connecting members 25, 26 that are protrusions bent in the direction opposite to the direction of radio wave radiation at both ends in the longer side direction of the first surface. The base plate has a U-shape and has first and second notches 14, 15 at both ends in the longer side direction. The first and second connecting members 25, 26 of the radiating plate 2 are inserted into the first and second notches 14, 15 of the base plate 1.SELECTED DRAWING: Figure 4

A radar for a vehicle may include a frame having a waveguide antenna embedded therein and extending in a direction crossing an extension direction of the waveguide antenna, a plated region covering at least a portion of the outer peripheral surface of the frame and formed of a metallic material, and an un-plated region not coated with the metallic material on one surface of the frame, wherein the un-plated region is located to be adjacent to the waveguide antenna. Therefore, the radar for the vehicle can improve the stability of an antenna pattern and a phase.

The application discloses a wide-band hat-type feed antenna and belongs to the technical field of satellite communication antennas. The method adopts a light-wall shaped horn loaded with an outer corrugated slot and a choke slot, improves horn and space matching, realizes expansion of a frequency band from 1.6:1 to 2.8:1, loads a slot at the horn mouth and the edge of the choke slot, realizes equalization characteristics of a feed radiation pattern, adopts a small-size sub-reflector to reduce shielding of the reflector, loads double choke slots in the reflector, reduces diffraction of the sub-reflector, and improves antenna radiation efficiency, and uses spline parameterization of the sub-reflector and the main reflector to realize integrated optimization design, so that the frequency bandwidth of the traditional hat-type feed is expanded, and good side lobe and efficiency performance are realized.

The application discloses an antenna technical field and relates to a one-transmitting-one-receiving omnidirectional antenna based on a 3D printing process, which comprises a PCB board and transmitting antennas and receiving antennas arranged on the two sides of the PCB board respectively, and the transmitting antennas and the receiving antennas are of the same structure; the transmitting antenna comprises a circular waveguide structure, a plurality of windows arranged on the side wall of the circular waveguide structure, and a coaxial inner conductor, a waveguide transition structure, a semicircular waveguide structure and an L-shaped bending conversion structure arranged in the circular waveguide structure in sequence, and a baffle for extending to the coaxial inner conductor is arranged on the window; the application combines the 3D printing process requirements, designs a one-transmitting-one-receiving horizontal omnidirectional waveguide antenna, designs a waveguide antenna and a chip feeding structure, can meet the miniaturization and integration requirements, is installed on a wireless sensor, and metal 3D printing does not need a mold; from a three-dimensional model to a finished part, only printing parameter setting, forming and simple post-processing are needed, and the research and development cycle is shortened.

An antenna device (1) including a printed circuit board (2) and a thereon arranged electronic component (3). The antenna device (1) includes at least two individual antenna elements (12) which are interconnected to the electronic component (3) configured to transmit and receive a signal. The antenna elements (12) each include at least one waveguide channel (9) interconnecting in the antenna assembly (6). A first waveguide aperture (10) is arranged at a back face (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 a signal. A second waveguide aperture (11) is arranged at a front face (17) of the waveguide assembly (6) and is also configured to transmit and / or receive a signal.

An antenna array includes at least two antennas with dual polarization, each antenna including: at least one first port intended for a first signal with a first polarization; at least one second port intended for a second signal with a second polarization; a polarizer including a septum for combining the signal on the first port with the signal on the second port; a polarization-preserving evanescent filter, one end of which is directly coupled to the polarizer and the other end is directly coupled to the ether. The evanescent filter includes an internal channel with at least one internal face provided with protuberances to match the impedance of the antenna to that of the ether.

A method for providing frequency selective surface zoning includes selecting a location for positioning a frequency selective surface (FSS) panel along a support arm of a reflector antenna system, and positioning a second feed horn on the support arm on an opposite side of the FSS panel. A number of unit cells are used to populate the FSS panel, and metallic patterns are formed on each unit cell. Multiple zones are subsequently defined on the surface of the FSS panel. Each zone is optimized for a predetermined range of incident angles.

This invention discloses a broadband transmission array antenna incorporating a true time-delay phase transmission line (TDPR), comprising a tunable phase magnetoelectric dipole transmission array and a horn feed. The tunable phase magnetoelectric dipole transmission array includes several periodically arranged antenna elements, each antenna element comprising a true time-delay phase transmission line layer. The transmission phase of each antenna element is determined by the transmission phase of the true time-delay phase transmission line. This invention utilizes the transmission characteristics of the true time-delay phase transmission line, changing its length to alter its transmission phase, and ultimately changing the transmission phase of the magnetoelectric dipole transmission array element. Simulation results demonstrate that the antenna proposed in this invention can achieve high gain and wide bandwidth.

The application discloses a hole bottom processing structure of a feed horn, and relates to the technical field of deep space exploration, weather measurement and satellite remote sensing.The hole bottom processing structure comprises a horn body and a ring-shaped assembly part, and a plurality of corrugated grooves with different diameters are formed in the horn body; a mounting block is arranged on one side of the horn body close to the hole bottom, a mounting cavity is formed in the mounting block, and one side of the mounting cavity is connected with the inside of the horn body. The ring-shaped assembly part is mounted in the mounting cavity, and the ring-shaped assembly part comprises first circular blocks and second circular blocks; five first circular blocks are arranged, the edges of adjacent first circular blocks are attached to each other, and the first circular blocks and the second circular blocks are fixed between the inside of the mounting cavity and the side wall of the mounting cavity through laser welding. The application avoids the problem that a tool cannot be deeply inserted into the hole bottom for processing due to the narrow hole in the horn by designing a split ring-shaped assembly part, and the effect of impedance mutation caused by uneven groove depth is eliminated by using a central hole with different diameters to form a continuous and uniform corrugated groove.

A radar filling level measuring device (1) for detecting the filling level of a low dielectric constant medium (3) present in a container (2) is shown and described, comprising a supply / receiving element (3) located on the outside of the container (2) for generating and receiving electromagnetic radiation (5), a measurement window (6) on the inner wall of the container (2) that allows electromagnetic radiation (5) to pass through, and a waveguide (7) located inside the container (2) and extending over a filling level measurement area, which is immersable in the medium (3), wherein the supply / receiving element (4), the measurement window (6), and the waveguide (7) form a measurement path through which electromagnetic radiation (5) generated by the supply / receiving element (4) during a measurement operation propagates through the measurement window (6) and the waveguide (7), and electromagnetic radiation (9) reflected from the surface (8) of the medium inside the waveguide (7) returns to the supply / receiving element (4) through the waveguide (7) and the measurement window (6).

This invention provides a radio wave lens that is lightweight, simple in shape and structure, and can efficiently control the radiation directivity of a horn antenna. [Solution] A radio wave lens 1 connected to the aperture surface ap1 of a horn antenna a1 that radiates and / or receives radio waves of a predetermined frequency, wherein the radio wave lens 1 is made of a dielectric material, has a constant cross-sectional shape and size, has a cylindrical structure with a length of 1 to 6 times the free-space wavelength of the radio wave, has an inner cross-sectional shape and size substantially identical to that of the aperture surface ap1 of the horn antenna a1, and the thickness of the side wall of the cylindrical structure substantially identical to the wavelength of the radio wave in the dielectric material.

The present application relates to satellite communication antenna technical field, disclose a kind of frequency selective surface deputy high-gain multi-band reflector antenna, comprising: main reflector;Frequency selective surface deputy reflector, etching periodic arrangement of slot structure on the base of deputy reflector and form, the transmission characteristics of low frequency band electromagnetic wave and the total reflection characteristics of high frequency band electromagnetic wave;Deputy support rod, for fixing and supporting frequency selective surface deputy reflector on main reflector;LS broadband feed source, arranged at the top of frequency selective surface deputy reflector, its polarization direction is perpendicular to the long side direction of the slot structure;X / K / EHF feed source system, arranged in the space between main reflector and frequency selective surface deputy reflector, its polarization direction is parallel to the long side direction of the slot structure;Frequency selective surface deputy reflector makes antenna present single reflector radiation form when working in low frequency band, present double reflector radiation form when working in high frequency band, realizes the high efficiency radiation of each frequency band.

The application discloses a low-frequency ultra-wideband four-ridge horn feed source, the aperture of the feed source is greater than 500 mm, and the feed source comprises a feed source skirt structure section, a transition section, a feed source coupling section and four ridge sheets located at the bottom of the feed source, and the bottom of the feed source is sealed; a heat insulation joint is arranged between the feed source coupling section and the transition section. The low-frequency ultra-wideband four-ridge horn feed source separates the current continuous four-ridge horn feed source into sections, separates the smaller volume but larger heat loss rear section of the feed source from the larger volume but smaller heat loss front section, optimizes the high-noise part of the feed source and the specific structure of the refrigeration Dewar, and finally realizes partial refrigeration of the low-frequency ultra-wideband feed source, greatly reduces the noise of a receiver system, improves the sensitivity of a telescope, and further improves the ability of the telescope to discover dim and weak celestial bodies.

This invention relates to a horn-loaded slot antenna, belonging to the field of slot antenna technology, and solves the technical problem of high cost in current millimeter-wave antennas. The horn-loaded slot antenna includes a metal radiating layer and a horn structure. The metal radiating layer has radiating slots and choke slots. The horn structure, formed by multiple plates, is mounted on the metal radiating layer. The radiating slots are located inside the horn structure, and the choke slots are located outside the horn structure. This horn-loaded slot antenna, by using multiple plates to form the horn structure, can reduce losses and improve efficiency. It has advantages such as low VSWR, high bandwidth, and simple structure. It achieves the power-dividing feeding function of traditional waveguide slot antennas, reducing costs. Furthermore, the multiple plate structure of the horn structure is simple and has lower manufacturing costs.

A waveguide antenna has a plurality of waveguide channels. Each waveguide channel is formed by a lateral wall structure and is arranged to couple out electromagnetic waves from an open output region of the waveguide channel. For each waveguide channel, a circumferential air slot is configured in an outer region of the lateral wall structure. Air slots of adjacent waveguide channels share a common air slot section.

The application discloses an S / X / K / Ka multi-band feed for VLBI, and relates to the technical field of satellite communication, comprising an S / X / K / Ka coaxial horn, an S-band circularly polarized feed network, an X-band integrated composite circularly polarized network, a K / Ka-band circular polarizer, a quadrature device and a diplexer. The S / X / K / Ka coaxial horn adopts a K / Ka-band dielectric horn which is coaxially nested in three layers from inside to outside, an X-band coaxial horn and an S-band corrugated horn, so that spatial separation receiving of four-band signals is realized. The S-band circularly polarized feed is composed of a magic T and an electric bridge; the X-band adopts integrated design to realize circularly polarized composition and miniaturization; the K / Ka-band completes polarization formation and band separation through the circular polarizer, the quadrature device and the diplexer. The application has compact structure, does not need mechanical feed switching, can realize simultaneous observation of S / X / K / Ka four bands, and is suitable for a new generation of VLBI system and a multi-band TT&C station.

To provide an efficient, low-profile, lightweight fixed-beam (constant angle of departure) aperture antenna.SOLUTION: An aperture antenna 10 includes an array of horn radiators 2 coupled to a waveguide diplexer 6 by means of a stripline distribution network. The stripline distribution network is embedded in a printed wiring board 18 sandwiched between a radiator plate 12 and a diplexer plate 14. The diplexer plate 14 and a backside cover plate 16 form the waveguide diplexer. Each horn radiator 2 has a respective circular opening at one end adjacent to the printed wiring board 18. The diplexer plate 14 includes an array of circular waveguide backshorts 24 which are congruent and respectively aligned with the circular openings of the horn radiators 2. The radiator plate 12 further includes a rectangular waveguide backshort 22 which is congruent and aligned with a rectangular port of the diplexer plate 14.SELECTED DRAWING: Figure 2

The present disclosure provides an omnidirectional antenna and a distributed antenna system, which relates to the technical field of antennas. The omnidirectional antenna includes an upper taper oscillator, a lower taper oscillator, a medium plate and an auxiliary branch; the upper taper oscillator and the lower taper oscillator are arranged separately in a first direction, and a taper vertex of the upper taper oscillator and a taper vertex of the lower taper oscillator are opposite to each other; the medium plate is perpendicular to the first direction, the medium plate includes a plurality of radiating components, and the plurality of radiating components are arranged in a circular array around the taper vertex; and the auxiliary branch is made from a conductor, and the auxiliary branch is connected to one or more of the upper taper oscillator, the lower taper oscillator and the medium plate.

An antenna (10) is provided. Said antenna (10) comprises a monocone feed (11a) for inputting an input signal and / or outputting an output signal, and a reflecting surface (12a) comprising a parabolic shape for transmitting the input signal as an electromagnetic output wave and / or receiving an electromagnetic input wave as the output signal.

A system for mounting an accessory on a helmet that enables data communication. The mounting system includes a helmet bracket (18) configured to be mounted on the helmet (14), a fastening assembly (20) for the removable attachment of the accessory (12) to the helmet bracket (18), and a wireless communication device (30) comprising at least one radio communication assembly (32) configured for the transmission of radio signals between the helmet bracket (18) and the accessory (12), each radio communication assembly (32) having a first antenna (36) disposed on the accessory (12) and a second antenna (42) disposed on the helmet bracket (18). Figure for the abstract: 1