261results about "Linear waveguide fed arrays" patented technology

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.

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.

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).

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.

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.

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.

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 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.

In an embodiment, an antenna subsystem includes a sparse receive antenna and an electronically steerable transmit antenna. The sparse receive antenna includes an array of electronically steerable receive elements each configured to receive a respective signal having a wavelength and each spaced apart from each adjacent one of the receive elements by a respective first distance that is more than one half of the wavelength, has an aperture, and is configured to generate a receive beam pattern. And the electronically steerable transmit antenna includes an array of transmit elements each configured to radiate a respective signal having the wavelength and each spaced apart from each adjacent one of the transmit elements by a respective second distance that is less than one half of the wavelength, has an aperture that is significantly smaller than the aperture of the sparse receive antenna, and is configured to filter, spatially, the receive beam pattern.

A chip-implementation of a millimeter wave MIMO radar comprises transmitters for transmitting short bursts of digitally modulated radar carrier signals and receivers for receiving delayed echoes of those signals. Various signal formats defined by the number of bits per transmit burst, the transmit burst duration, the receive period duration, the bitrate, the number of range bins, and the number of bursts per scan, facilitate the choice of modulating bit patterns such that when correlating for target echoes over an entire scan, the correlation codes for different ranges and different transmitters are mutually orthogonal or nearly so as compared to a random selection of codes. In the event of imperfect orthogonality, the subtraction of strong already-detected target signals allows for better detecting of weaker signals or moving targets that are rendered non-orthogonal by their Doppler shift.

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.

The application discloses a kind of based on rectangular waveguide lens terahertz two-dimensional multi-beam antenna, including two-dimensional feed array, rectangular metal cavity and rectangular waveguide lens;Two-dimensional feed array includes first metal substrate, first metal substrate is provided with several rectangular waveguide feed units, each rectangular waveguide feed unit is connected with feed port;Rectangular waveguide lens includes second metal substrate, second metal substrate is provided with several rectangular waveguide phase shift units, and the rectangular waveguide phase shift units of adjacent row are mutually staggered distribution.The application is realized two-dimensional multi-beam scanning by the way of two-dimensional feed array bias feed, with the advantages of two-dimensional scanning angle and gain can be arbitrarily designed, large bandwidth advantage.The application adopts rectangular waveguide array to form metal lens, with the advantages of low high-frequency loss, small size;At the same time, through waveguide array staggered and period compression, mirror image grating lobe is eliminated, with the advantages of low grating lobe, large scanning angle.

A mmWave radar sensor module is proposed, to have a specific structure enabling a 180° Field of View (FoV) with an affordable system cost. The proposed mmWave radar sensor module is put to use in passenger vehicles, commercial vehicles, automated guided vehicles (AGVs), as well as motorcycles and bikes, enabling a variety of application features: smart parking assistance, replacing PDC sensors, determining the distance, speed and angle of targets, including their tracking, detection of people, tracking of people, tailgate and door protection by restricting opening, gesture and kick sensing, and other applications. In the case of two-wheelers and three-wheelers, the same apparatus may cover also blind sport detection application in the affordable system manner.

The present disclosure relates to a radiation assembly, a waveguide antenna sub-arrays, and a waveguide array antenna. The radiation assembly for the waveguide array antenna comprises: a first radiation layer having a plurality of first radiation windows, each of the plurality of first radiation windows has a metal grid to divide the first radiation window into two radiation holes; and a second radiation layer having a plurality of second radiation windows, the plurality of second radiation windows correspond to the plurality of first radiation windows one to one, and the plurality of second radiation windows of the second radiation layer do not have any metal grid, wherein the thickness of the second radiation layer is greater than the thickness of the first radiation layer, and wherein the first radiation layer and the second radiation layer are manufactured independently of each other. The radiation assembly can enhance the polarization purity of the aperture radiation of the waveguide array antenna to which it belongs, so as to achieve a higher antenna cross polarization index.

The invention relates to the technical field of satellite communication, and particularly discloses a Ka frequency band measurement and control antenna and a Ka frequency band measurement and control communication device and method.The Ka frequency band measurement and control antenna comprises a hollow quadrangular frustum pyramid, pyramidal horn antennas are arranged on the four side faces of the quadrangular frustum pyramid, and each pyramidal horn antenna comprises a hollow rectangular feed waveguide and a hollow horn; the rectangular feed waveguide penetrates through the side face of the quadrangular frustum pyramid from the interior of the cavity of the quadrangular frustum pyramid, extends out of the cavity of the quadrangular frustum pyramid and is expanded to form the horn, the beam width of the pyramid horn antenna in the azimuth direction is larger than 90 degrees, and the beam width of the pyramid horn antenna in the pitching direction is larger than 50 degrees. According to the Ka frequency band measurement and control antenna, after the wave beams generated by the pyramid horn antennas arranged on the four side surfaces of the quadrangular frustum pyramid are combined, the space of 0-360 degrees in azimuth and 0-50 degrees in pitch can be covered, and communication between the Ka frequency band measurement and control antenna and high-orbit relay satellites in the earth can be achieved conveniently.

A glass substrate architecture for mounting RF components may be configured for heat dissipation. Existing millimeter wave radiofrequency (RF) systems mount the radiofrequency integrated circuits (RFICs) on a printed circuit board on the opposite side of a heat sink, making it difficult to dissipate heat away from the RFICs during operation. This architecture mounts the RFICs directly to a back side of a glass waveguide substrate, and thermally couples the top side of the RFICs to a conductive pad on the underlying printed circuit board with a thermal pathway to the heatsink. This leads to a much more effective dissipation of heat away from the RFICs and eliminates the need for additional cooling systems or throttling the performance of the radar system.

The present application discloses embodiments that relate to an electromagnetic apparatus. In one aspect, the present apparatus includes a circuit board configured to propagate an electromagnetic signal. The apparatus also includes a waveguide configured to propagate an electromagnetic signal. The apparatus further includes a coupling port configured to couple a signal between the circuit board and the waveguide, where the coupling port has dimensions based on a desired impedance of the port.

This document describes techniques and systems for planar surface features for waveguides and antennas. Two structures are arranged with opposing planar surfaces fixed adjacent to a separation plane dividing a channel (e.g., a waveguide, a feed network) to provide an energy path for propagating electromagnetic energy. Part of the channel is formed between side walls of a recessed groove within one opposing surface; another channel part is formed by an arrangement of surface features spaced and shaped on the other opposing surface. At least two surface features are adjacent protrusions contoured to compliment the sidewalls of the recessed groove. An area on each opposing surface between the recessed groove and the adjacent protrusions is configured to form the energy path through the channel including to prevent energy leakage from the separation plane dividing the channel.

Slotted antenna device, comprising: a first electrically conductive component (110) with a first electrically conductive surface (110b) on a front side and a second electrically conductive surface (110a) on a back side and with at least one slot (112) extending from the first electrically conductive surface (110b) to the second electrically conductive surface (110a); a second electrically conductive component (120) on the back side of the first electrically conductive component (110), wherein the second electrically conductive component (120) has a third electrically conductive surface (120a) on the front side, the third electrically conductive surface (120a) being opposite to the second electrically conductive surface (110a); a rib-shaped waveguide element (122) on the second electrically conductive surface (110a) of the first electrically conductive element (110), wherein the waveguide element (122) has an electrically conductive waveguide surface (122a) that is opposite to the third electrically conductive surface (120a) and extends along the third electrically conductive surface (120a); and an artificial magnetic conductor on at least either the second electrically conductive surface (110a) or the third electrically conductive surface (120a), wherein the artificial magnetic conductor extends on both sides of the waveguide element (122), wherein the third electrically conductive surface (120a), the waveguide surface (122a) and the artificial magnetic conductor define a waveguide in an intermediate space extending between the third electrically conductive surface (120a) and the waveguide surface (122a); the waveguide element (122) has a first rib (122A) and a second rib (122B); one end of the first rib (122A) and one end of the second rib (122B) are opposite each other; viewed from a direction perpendicular to the waveguide surface (122a), at least one slot (112) is arranged between one end of the first rib (122A) and one end of the second rib (122B); which has at least one slot (112) through the first electrically conductive surface (110b) open to an external space and at least either a distance between the third electrically conductive surface (120a) and the waveguide surface (122a) or a width of the waveguide surface (122a) varies along a direction in which the waveguide element (122) extends.