384results about "Linear waveguide fed arrays" patented technology

Waveguide and / or antenna structures for use in RADAR sensor assemblies for vehicles and the like. In some embodiments, the assembly may comprise an antenna slot array comprising a plurality of antenna slots extending between opposing surfaces of a unitary structure of the antenna assembly, such as a waveguide and / or antenna block. A plurality of elongated grooves may be positioned adjacent to at least one of the antenna slots of the antenna slot array. Each of at least a subset of the plurality of elongated grooves may be defined, at least in part, by a ridge formed along an antenna side of the unitary structure.

Improved waveguides, transitions, and conductors for propagating electromagnetic energy. A device includes a waveguide port, two or more coaxial waveguides, and a transition disposed between the waveguide port and the two or more coaxial waveguides. The transition combines or divides electromagnetic energy propagating between the waveguide port and the two or more coaxial waveguides.

An antenna assembly includes a stack and an antenna structure. The stack includes at least one electrically conductive layer structure and at least one electrically insulating layer structure, and a component, at least partially embedded in the stack. At least a portion of the electrically conductive layer structure is provided at the external side of the stack and is configured to act at least as part of an electromagnetic wave coupling structure. The component is coupled to the electromagnetic wave coupling structure. The antenna structure provides an opening to a channel. The stack and the antenna structure are connected so that the electromagnetic wave coupling structure and the opening to the channel face each other.

A waveguide device and related products relate to the technical field of millimeter wave radars. The waveguide device comprises a first waveguide and N electromagnetic band gap units, wherein the N electromagnetic band gap units are located between the first waveguide and the antenna device, the N electromagnetic band gap units are aperiodically arranged around the first waveguide, signal transmission is carried out between the first waveguide and the antenna device, and N is an integer greater than 0. According to the waveguide device, reliable transmission of signals from the waveguide outlet of the radio frequency chip to the waveguide feed port of the antenna device can be realized through a non-periodic electromagnetic band gap unit arrangement form, and the signal transmission performance and the robustness of the waveguide outlet of the radio frequency chip and the waveguide feed port of the antenna device are improved.

Waveguide and / or antenna structures for use in RADAR sensor assemblies and the like. In some embodiments, an antenna module for a vehicle sensor may comprise a first array of elongated antenna slots and a second array of elongated antenna slots. In some embodiments, at least one of the elongated antenna slots comprises a shifted, elongated antenna slot that is shifted vertically in a vertical direction along an axis of the shifted, elongated antenna slot relative to each of the other elongated antenna slots of a respective array of the shifted, elongated antenna slot.

An antenna system for satellite applications is provide, the antenna system comprising an antenna array and a feed structure, and the antenna array is a passive antenna array configured to have a first state and a second state, the second state being a first deployed state. The feed structure is configured to provide a linearly polarized incident field for the antenna array in the first deployed state. The antenna array comprises a plurality of array elements, and the plurality of array elements forms a polarization conversion surface configured for converting the linearly polarized incident field to a reflected / transmitted circular polarized field. The antenna array is configured so that the radiation pattern of the reflected / transmitted circular polarized field corresponds to a predetermined radiation pattern and an array element geometry and an array element position of each of the plurality array elements are configured to provide the predetermined radiation pattern.

Radar retroreflective (R3) devices including an electromagnetic absorber are provided. The electromagnetic absorber is disposed on selected areas of the device to reduce specular reflection without substantially reducing retroreflection of the device.

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.

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.

An antenna arrangement having a stacked layered structure. The antenna arrangement including a radiation layer having a surface. The surface is delimited by a surface boundary. A first and a second slot extend along a first slot axis and second slot axis, respectively, and are arranged on the surface. The antenna arrangement also includes a distribution layer facing the radiation layer. The distribution layer is arranged to distribute a radio frequency signal to the first and second slots. The distribution layer includes a distribution layer feed and a ridge arranged to form a first ridge waveguide intermediate the distribution layer and the radiation layer. The ridge includes a first section connected to a second section via a curved section. The first section extends along a first ridge axis and the second section extends along a second ridge axis different from the first ridge axis.

The present disclosure relates to an antenna layer (1) having a rear face (2) and a front face (3) and a method for producing an antenna layer (1). The antenna layer (1) comprises at least two waveguide channels (4) extending at the rear face (2), each comprising at least one waveguide hole (5) arranged at the front face (3) for transmitting and / or receiving signals. The waveguide channels (4) each comprise at least one radiation opening (6) which is arranged in the antenna layer (1) and which is interconnected to the waveguide aperture (5) by at least one radiation channel (7). A parting line (8) is arranged in the at least one radiation channel (7) between the rear face (2) and the front face (3), which parting line (8) is spaced apart from the at least one radiation opening (6) towards the at least one waveguide hole (5) by a distance (D) and preferably extends circumferentially within the at least one radiation channel (7). The present disclosure also relates to an antenna assembly (17) comprising the antenna layer (1) and an antenna arrangement (23) comprising the antenna assembly (17).

The present disclosure relates to an antenna device (1) comprising an antenna plate (2) having a front face (3) and a back face (4) and at least one waveguide channel segment (5) having a front section (6) and a back section (7) arranged in the antenna plate (2) extending in a first direction (x) parallel to the front face (3) in the antenna plate (2), waveguide apertures (8) arranged in the antenna plate (2) extending between and interconnecting the front section (6) of the waveguide channel segment (5) and the front face (3) of the antenna plate (2), wherein the front section (6) and / or the back section (7) comprise indentations (9) in the form of protrusions (10) extending from a channel wall (11) into the front section (6) and / or the back section (7) of the waveguide channel segment (5) and wherein the waveguide apertures (8) in the region of their rear end (12) have a cross-section (13) with a longer extension (14) and a shorter extension (15).

An electronic device includes a transmission antenna, a reception antenna, a cover part, and a signal processor. The transmission antenna is configured to transmit a transmission wave. The reception antenna is configured to receive a reflection wave resulting from reflection of the transmission wave. The cover part is configured to cover at least part of at least one of the transmission antenna or the reception antenna. The signal processor is configured to detect an object that reflects the transmission wave based on at least one of a transmission signal transmitted as the transmission wave or a reception signal received as the reflection wave. At least part of at least one of the transmission wave transmitted by the transmission antenna or the reflection wave received by the reception antenna is transmitted and / or received via the cover part. A thickness of the cover part is designed based on magnitude-squared coherence.

An antenna device for automotive radar applications includes a printed circuit board having a front face and a back face and an electronic component which is interconnected to the printed circuit board and an antenna layer having a front face and a back face, which back face is interconnected to the front face of the printed circuit board. At least one waveguide aperture is interconnected to the front face of the antenna layer and is communicatively connected to the electronic component by at least one waveguide channel, wherein the at least one waveguide channel comprises a conductive surface for guiding an electromagnetic field between the electronic component and is formed by a recess arranged between the back face of the antenna layer and the front face of the printed circuit board.

An array antenna (100) having a layered configuration. The array antenna comprises a radiation layer (110) comprising a plurality of radiation elements (111) and a distribution layer (120) facing the radiation layer. The distribution layer is arranged to distribute a radio frequency, RF, signal to the plurality of radiation elements. The distribution layer comprises at least one distribution layer feed (121) and at least one first waveguide (122) arranged to guide the RF signal between at least one distribution layer feed and at least one radiation element. The array antenna further comprises at least a second waveguide (130) connected to at least one distribution layer feed (121). Any of the first (122) and the second (130) waveguides comprises plastics with a first type of surface treatment (313), where the first type of surface treatment comprising metallization. At least one radiation element is a dummy element terminated by an attenuation section, where the attenuation section is arranged on any of the waveguides (122, 130) connected to the dummy element and that comprises plastics. The attenuation section comprises a second type of surface treatment (314) arranged to attenuate the RF signal.

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.

A microstrip patch log periodic antenna (MSPLPA) may include a ground plane, a dielectric material, a printed circuit board comprising a microstrip patches. Each of the microstrip patches may be configured to transmit and / or receive signals. The dielectric material may be disposed between the ground plane and the printed circuit board. Each of the microstrip patches may be frequency scaled.

Base station antennas include a main module that has a first backplane that includes a first reflector. A vertically-extending array of first radiating elements is mounted to extend forwardly from the first reflector, and at least one first RF port is coupled to the vertically-extending array of first radiating elements. These antennas further include a sub-module that is attached to the first backplane. The sub-module includes a second backplane that has a second reflector that is separate from the first reflector. A vertically-extending array of second radiating elements is mounted to extend forwardly from the second reflector and is transversely spaced-apart from the vertically-extending array of first radiating elements. A plurality of second RF ports are coupled to the vertically-extending array of second radiating elements. The vertically-extending array of first radiating elements and the vertically-extending array of second radiating elements are configured to serve a common sector of a base station.

A single-layer broadband vertically polarized endfire magnetoelectric dipole (ME-dipole) antenna and an antenna array. The main radiator of this antenna is a substrate-integrated closed loop, which consists of two horizontal metallic strips printed on the upper and lower surfaces of substrate and a pair of vertical metallic vias. Excited by a double-sided parallel-strip line at the center of the loop, the metallic vias function as electric dipoles while the entire loop aperture works as magnetic dipole. To facilitate integration, this magnetoelectric dipole loop antenna is fed by an open-ended substrate integrated waveguide (SIW), which also works as a backed cavity to enhance the front-to-back ratio. Moreover, rectangular slots are etched at the edges of the SIW aperture to further improve the front-to-back ratio and also the cross-polarization performance. Thus, a vertically polarized endfire ME-dipole loop antenna with a low-profile structure, broad bandwidth, and stable radiation performance is achieved.

Provided are a radio-frequency apparatus, a radio-frequency transmission system, a radio-frequency system, a radio-frequency module, and a radar. The radio-frequency apparatus comprises a packaging body (11) in which an IC bare die is packaged, and a PCB (21), wherein on the surface of the packaging body (11), at least one radiation sheet (119) and a plurality of solder balls (12), which are respectively arranged around each radiation sheet into a circle and form a waveguide channel, are provided, and an inner ring enclosed by the plurality of solder balls (12) comprises at least one ridge portion (121), which protrudes towards the inside of the ring; and the PCB (21) is provided with a first waveguide hole (211), which has the same shape as the inner ring enclosed by the solder balls (12). The radio-frequency transmission system further comprises a waveguide structure (22), which is arranged on the side of the PCB (21) that is away from the packaging body (11), wherein the waveguide structure (22) is provided with a ridge-shaped or rectangular second waveguide hole (221). The radio-frequency apparatus reduces the area occupied by a packaging transition structure, the radio-frequency transmission system realizes the diversification of a radio-frequency signal transmission channel, and the radio-frequency module reduces the loss.

An antenna includes a waveguide structure, a radiating element, and a microstrip structure. The waveguide structure has a first slot and a second slot, and a length direction of the first slot is parallel to a length direction of the second slot. The microstrip structure may include a first microstrip and a second microstrip. A first feeding part of the first microstrip is arranged orthogonally to a second feeding part of the second microstrip. The first microstrip is coupled to the first slot, the first feeding part is connected to the radiating element for feeding, the second microstrip is coupled to the second slot, and the second feeding part is connected to the radiating element for feeding.

Antenna assemblies, such as RADAR sensor antenna assemblies, that incorporate destructive interference elements. In some embodiments, the assembly may comprise one or more waveguides, one or more antenna slots, and a plurality of destructive interference elements. The destructive interference elements may be configured to reduce backscatter radiation by contributing to destructive interference of electromagnetic waves incident upon the destructive interference elements. In some embodiments, the destructive interference elements may comprise at least two distinct types of destructive interference elements arranged adjacent to one another on the outer surface, in some cases in a repeating pattern.

A radar module according to an embodiment includes a substrate; a communication device disposed on the substrate; an antenna unit disposed on the substrate; and a connection line disposed on the substrate and connecting the communication device and the antenna unit, and including at least one stub, wherein the antenna unit includes: a radiator including a feeding slot; and a feeding line connecting the connection line and the radiator, and a direction of a beam radiated from the antenna unit is adjusted by controlling a first variable related to the feeding slot and a second variable related to the stub.

Multibeam base station antennas include first through M first polarization RF ports, an antenna array that includes N columns of radiating elements, and a first polarization beamforming network having M rows and N columns of directional couplers, where each row has a different number of directional couplers, where M and N are natural numbers, wherein the last directional coupler in a top row has a port that is coupled to ground via a matched termination.

A circuit-board interposer includes contacts on a top surface and a bottom surface and includes a millimeter-wave coaxial transition structure formed using contacts on the top surface and vias extending into the interposer. A first via extends into the interposer to a first depth and is surrounded by additional vias that penetrate the interposer to a second depth smaller than the first depth. The interposer also includes a hollow conductive waveguide structure formed within the interposer that extends from the second depth to a third depth that has a first end and a second end. The first via extends into the waveguide at the first end and an aperture is present at the second end. The coaxial transition and the waveguide together are configured to couple millimeter-wave energy from a feed contact on the top surface of the interposer and direct it to the aperture.

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.

An antenna array and a communications device are provided. The antenna array includes a feeding waveguide and a cover that covers the feeding waveguide, where a waveguide port is disposed on the feeding waveguide, and a plurality of radiation slots that are arranged in a length direction of the feeding waveguide and that are configured to transmit signals fed in from the waveguide port are disposed on the cover, and are classified into a first subarray and a second subarray, where at a center frequency of an operating frequency of the antenna array, a difference between a beam direction angle of the first subarray and a beam direction angle required by the antenna array and a difference between a beam direction angle of the second subarray and the beam direction angle required by the antenna array each are less than a specified threshold, and with a change of a frequency of the antenna array, a trend in which the beam direction angle of the first subarray changes with the frequency is contrary to a trend in which the beam direction angle of the second subarray changes with the frequency. Therefore, when the first subarray and the second subarray are combined, a beam direction difference at different frequencies can be better reduced, thereby improving an antenna array communication effect.

An antenna device is provided with a polarization conversion unit (16), a first waveguide line (13), and a second waveguide line (21). The first waveguide line is formed in a cross-sectional shape extending in a pipe height direction (D2) in a line cross-section perpendicular to a pipe length direction (D1), and the second waveguide line is formed in a cross-sectional shape extending in a pipe width direction (D3) in the line cross-section. The first waveguide line extends from a conversion space (17) of the polarization conversion unit to one side in the longitudinal direction of the tube, and the second waveguide line extends from the conversion space to the other side in the longitudinal direction of the tube, and a plurality of antenna openings (24) are connected to the second waveguide line. According to such a structure, the first waveguide tube is provided on one side in the tube length direction with respect to the plurality of antenna openings. Consequently, the specification of the antenna device can be prevented from expanding in the tube width direction.