44 results about "Hollow waveguide" patented technology

A microwave filter arrangement (100) for quantum computing applications, the filter arrangement (100) comprising a first port (113) and a second port (114). The microwave filter arrangement (100) comprises a main waveguiding structure (110) arranged between the first (113) and second (114) port, where the main waveguiding structure (110) comprises an inner conductor (111) having a circular cross-section that is surrounded by a hollow outer conductor (112) having a rectangular cross-section with two opposed long sides and two opposed short sides. The waveguiding structure (110) comprises a plurality of hollow waveguides (115) extending away from one or both of the long sides of the outer conductor, the hollow waveguides (115) comprising a dielectric material (122) and being terminated by an electromagnetically absorptive material (124).

An optical hollow waveguide component (25), particularly for homogenizing EUV light, comprises two support elements (26) and two insert elements (28), which are particularly plate-shaped. The insert elements (28) are inserted between the support elements (26) such that a hollow waveguide (11) is formed between the insert elements (28). The hollow waveguide component (25) is particularly suitable for use in an illumination optic for a mask inspection system (1) for use with EUV illumination light. An optical system with such an illumination optic and a mask inspection system with the optical system are also described.

Network elements and methods of use, including a transmitter comprising a client-side input, signal and clock conditioning blocks, a modulation block, and antennas. The client-side input receives baseband signals having client data. The signal conditioning block adjusts signal characteristics of the baseband signals to generate intermediate signals. The clock conditioning block receives a first clock signal having a first clock frequency and adjusts signal characteristics of the first clock signal to generate a second clock signal having a harmonic frequency of the first clock frequency. The modulation block modulates the intermediate signals onto the second clock signal to generate antenna feed signals. The antennas generate radiated signals based on the antenna feed signals and couple the radiated signals into hollow waveguides. The radiated signals are radiated electromagnetic waves configured for coherent detection with a transmission frequency in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz).

A compact feed system (600) is provided which comprises an orthomode transducer or junction (400) and a waveguide H-plane directional coupler (100). The waveguide H-plane directional coupler may comprise two hollow waveguide sections (110, 120) and a coupling section (130) arranged in between the two hollow waveguide sections for coupling a signal from one hollow waveguide section to another hollow waveguide section. In a transverse cross-section of the waveguide H-plane directional coupler, the hollow waveguide sections may be angled towards the coupling section and delimit a recess (20) formed at an inner side of the waveguide H-plane directional coupler. The orthomode transducer or junction (400) may be positioned at least partially in the recess to increase compactness of the feed system.

Transmitters, receivers, transceivers, transport networks, and methods of use are described herein, including a transmitter comprising a client-side input, transmitter circuitry, and antennas. The client-side input receives baseband signals having client data encoded therein. The transmitter circuitry receives the baseband signals from the client-side input and generates antenna feed signals based on the baseband signals. The antennas receive the antenna feed signals from the transmitter circuitry, generate radiated signals based on the antenna feed signals, and couple the radiated signals into hollow waveguides. The radiated signals are radiated electromagnetic waves configured for coherent detection and having one or more frequencies in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz). The antennas include one of a helical antenna, a waveguide probe antenna, a tapered antenna, a patch antenna, and a slot antenna.

The invention discloses a planar integrated hollow rectangular dielectric waveguide, and relates to the field of planar integrated waveguides, and the planar integrated hollow rectangular dielectric waveguide comprises an upper dielectric layer, a middle dielectric layer and a lower dielectric layer which are distributed from top to bottom, and a metal ground plane attached to the lower surface of the lower dielectric layer. The left side air hole area, the middle wave guide area and the right side air hole area are distributed from left to right; the middle wave guide region is provided with an air slot in the center of the middle dielectric layer to form a hollow wave guide structure; a plurality of columns of air holes penetrating through the upper dielectric layer, the middle dielectric layer and the lower dielectric layer are formed in the left air hole area and the right air hole area, and an air hole array is formed. The planar integrated hollow rectangular dielectric waveguide designed by the application has the advantages of low loss, easy realization of integrated design and planar integration, and simple and stable structure.

The application discloses a dual-mode dual-circularly polarized antenna array, which comprises a dual-mode feed network and a radiation network stacked in order from bottom to top, the dual-mode feed network is used for transmitting electromagnetic waves in the form of TE10 mode and TEM mode input thereto to the radiation network, and the radiation network is used for radiating electromagnetic waves transmitted by the dual-mode feed network to free space, the dual-mode feed network is a hybrid feed network based on a hollow waveguide structure and an SISL structure, and the radiation network is a hybrid radiation network based on a partition structure and a stepped horn structure; the dual-mode dual-circularly polarized antenna array has the advantages of low profile, low sidelobe, simple structure and capability of being applied to a high-gain scene.

The present invention relates to a waveguide member for conducting electromagnetic waves, and more particularly to a hollow waveguide. The waveguide member has a cavity surrounded by a conductive material. The cavity is configured such that the effective width for electromagnetic waves is greater than the actual dimensions of the cavity.

A compact feed system (600) is provided, comprising an orthomodal transducer or junction (400) and a waveguide H-plane directional coupler (100). The waveguide H-plane directional coupler may consist of two hollow waveguide sections (110, 120) and a coupling section (130) disposed between the two hollow waveguide sections to couple a signal from one hollow waveguide section to another. In a cross-section of the waveguide H-plane directional coupler, the hollow waveguide sections may be angled toward the coupling section and define a recess (20) formed on an inner side of the waveguide H-plane directional coupler. The orthomodal transducer or junction (400) may be located, at least partially, within the recess to increase the compactness of the feed system.

The application discloses a kind of based on low-loss anti-resonance hollow waveguide broadband high-efficiency leaky-wave antenna design method and structure, its technical scheme includes: first based on anti-resonance principle design single dielectric wall hollow waveguide;Further introduce second dielectric wall optimization form double dielectric wall anti-resonance hollow waveguide, significantly enhance the transverse restraint to electromagnetic energy in air cavity by cascading reflection effect, realize super low loss transmission;Finally, etching periodic radiation slot in the upper layer metal plate of double dielectric wall hollow waveguide, construct leaky-wave antenna with frequency scanning function.The application uses air as main transmission medium, fundamentally reduces dielectric loss, so that the antenna has ultra-low transmission loss and ultra-high radiation efficiency in wide frequency band, while the structure is simple, process compatibility is strong, only through standard PCB process can be realized, can be widely used in 5G / 6G communication, millimeter wave radar, terahertz imaging and other high-performance wireless systems.

A microwave transmission arrangement, comprising a microwave circuit board including a patch; microwave transceiver circuitry coupled to the patch; an electrically conductive hollow waveguide arranged to guide microwave signals between a first end and a second end; and a separator sheet sandwiched between the microwave circuit board and the first end of the hollow waveguide, the separator sheet being configured to allow passage of microwaves between the patch and the hollow waveguide through the separator sheet. The separator sheet is included in an encapsulation separating an encapsulated interior of the microwave transmission arrangement from an exterior outside the encapsulation, the patch, and the microwave transceiver circuitry being in the encapsulated interior, and the hollow waveguide being in the exterior outside the encapsulation.

To provide a waveguide device capable of reducing the number of operations of a pressurizing device.SOLUTION: According to an embodiment, a waveguide device includes a hollow waveguide and a sheet. The waveguide is provided to be able to guide radio waves between the antenna device and the transmitter, the receiver, or the transceiver. Dry air is supplied to the waveguide from a pressurizing device. The sheet partitions the waveguide between the transmitter, the receiver, or the transceiver and the antenna device. The sheet allows dry air to pass to the antenna device side while the pressure of the dry air on the transmitter, receiver, or transceiver side is higher than the pressure of the dry air on the antenna device side due to the partitioning of the sheet within the waveguide. The pressure of the dry air on the antenna device side is equal to or higher than the atmospheric pressure.SELECTED DRAWING: Figure 1

Radar system for environmental detection, in which there are several high-frequency components that are connected via a common high-frequency signal, the so-called LO signal, wherein the LO signal is at least partially guided in at least one hollow waveguide, for which there is at least one molded part connected to the circuit board and the hollow waveguide is formed by a depression, recess or protrusion in the side of the molded part facing the circuit board and a metallized surface of the circuit board.

The invention relates to a hollow waveguide element having a channel (10) which has an open side which is delimited by at least one side wall (11, 12). The side wall (11, 12) has a plurality of electric contact surfaces (20) which are spaced apart from one another.

The invention relates to a compact radial high-power microwave generator, and belongs to the technical field of high-power microwaves. The device is composed of a cathode 1, a first drift section 2, a coupling cavity 3, a second drift section 4, a radial slow wave structure 5, an electron beam collector 6, a radial coupling channel 7, a mode converter 8 and an output waveguide 9. The invention relates to a compact radial high-power microwave generator which is of a circumferential symmetrical structure, mainly utilizes interaction between a high-current relativistic electron beam radially emitted by a cathode 1 and a transverse electric mode in a radial slow wave structure 5, and outputs microwaves through outward coupling of a coupling cavity 3 near the cathode side. Therefore, the purposes of reducing the axial size of the radial high-power microwave generator and realizing hollow waveguide single-mode output are achieved.

A radar level gauge system comprising a first microwave unit including a transmitter patch for transmitting a first transmit signal, a receiver patch for receiving a first reflection signal, and processing circuitry for determining a first level measurement; a second microwave unit including a transmitter patch for transmitting a second transmit signal, a receiver patch for receiving a second reflection signal, and processing circuitry for determining a second level measurement; an antenna; and a signal coupling arrangement including a first hollow waveguide directional coupler, a second hollow waveguide directional coupler, and a signal combiner.

The invention relates to a method for determining a permittivity of a medium (3) by means of a calibration device (1) and a radar-based fill level measuring apparatus (2), wherein the method comprises at least the following steps: - providing a reference environment in the hollow waveguide (5), in-coupling a first radar signal having at least one first frequency into the hollow waveguide (5) and out-coupling a first received signal, in-coupling a second radar signal having at least one second frequency into the hollow waveguide (5) and out-coupling a second received signal, - introducing the calibration device (1) into a container (9) containing the medium (3) such that the hollow waveguide (5) is filled with the medium (3), in-coupling the first radar signal into the hollow waveguide (5) and out-coupling a third received signal, - in-coupling the second radar signal into the hollow waveguide (5) and out-coupling a fourth received signal, - determining a permittivity of the medium (3) on the basis of the first, second, third and fourth received signals.

The invention relates to a contact assembly having a circuit board, in particular a multilayer circuit board. The circuit board has an electrically insulating layer and an electrically conductive layer. The circuit board also has a hollow waveguide channel, said hollow waveguide channel being designed and arranged to guide, in particular transversely to the flat extension of the circuit board, electromagnetic waves, in particular microwaves or radar waves formed by microwaves, through the circuit board. The contact assembly also has a microwave component which is connected to the circuit board in the region of the input end of the hollow waveguide channel. The microwave component is designed to generate microwaves and to transmit the microwaves into the hollow conductor. The circuit board has at least one adaptation layer for the thermal expansion behavior or the temperature expansion coefficient of the microwave structural element in the region of the microwave structural element.

An optical hollow waveguide component (25), in particular for the homogenization of EUV light, comprises two support elements (26) and two insertion elements (28), in particular two plate-shaped insertion elements. The insertion elements (28) are inserted between the support elements (26) in such a way that a hollow waveguide (11) is formed between the insertion elements (28). The hollow waveguide component (25) is suitable in particular for use in an illumination optics unit for a mask inspection system (1) for use with EUV illumination light. An optical system having such an illumination optics unit and a mask inspection system having the optical system are also described.

The present disclosure provides a tunable waveguide attenuator comprising a base structure with a bottom wall, a first side wall, and a second side wall, wherein the first side wall and the second side wall are arranged on opposite sides of the bottom wall, and wherein the bottom wall, the first side wall, and the second side wall enclose a hollow waveguide channel on three sides. The tunable waveguide attenuator further comprises a movable cover for the hollow waveguide channel that on a surface facing the bottom wall comprises a first section and a second section with different surface loss properties, wherein the movable cover is movable such that the area of the hollow waveguide channel that is covered by the first section and the second section changes with the movement of the movable cover.

There is provided a system for contactless signal transmission through a rotary joint, comprising a transmitter and a receiver wherein the transmitter is on a first part of the rotary joint and the receiver is on a second part of the rotary joint, the first part and the second part being opposite and separated by an air gap, the surface of the first part and the surface of the second part facing each other are perpendicular to the rotating shaft of the rotating joint; and a choke coil in the air gap contacting one of the first component and the second component, the choke coil including a printed circuit board having a through-hole coaxial with the rotation axis and an electromagnetic chip, each of the transmitter and the receiver including a hollow waveguide, at least the transmitter including a waveguide polarizer, the diameter of the waveguide polarizer is smaller than the diameter of the circular hollow waveguide, and two longitudinal radially opposed grooves are in the wall of the waveguide polarizer.

The invention relates to a buffer device (18) with at least one self-propelled shuttle (12, 30, 32) for picking up objects to be buffered, wherein each shuttle is movable along a track and comprises at least two antennas (13, 14, 29, 31, 45, 46), and with two slotted hollow waveguides (1, 2, 23, 39, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86), each comprising segments (3, 4, 5, 6, 24-28, 40-44) arranged one behind the other along the track and designed to accommodate antennas which cooperate with the respective slotted hollow waveguide in which they are accommodated for signal transmission. The first slotted waveguide operates at a first frequency. The second slotted waveguide operates at a second frequency. The first and second frequencies are different.The invention further relates to a method for operating the buffer device (18) comprising inserting the first antenna (13, 29, 31) of a self-propelled shuttle (12, 30, 32) into the first slotted hollow waveguide (1, 23), inserting the second antenna (14, 45, 46) of the self-propelled shuttle into the second slotted hollow waveguide (2, 39), operating the first slotted hollow waveguide at the first frequency, and operating the second slotted hollow waveguide at the second frequency.

The invention discloses a liquid viscosity detection system and method based on double-interface guided waves. The system comprises a hollow waveguide tube, an external liquid storage container, a signal transceiving unit I, a signal transceiving unit II and a signal processing unit, the hollow waveguide tube is arranged in the signal transceiving unit I and the signal transceiving unit II in a penetrating mode, the signal transceiving unit I and the signal transceiving unit II are arranged at intervals in the axial direction of the hollow waveguide tube, and the signal processing unit is electrically connected with the signal transceiving unit I and the signal transceiving unit II. To-be-measured fluid is arranged in the external liquid storage container and the hollow waveguide tube, and one end of the hollow waveguide tube extends into the external liquid storage container and is immersed below the to-be-measured fluid in the external liquid storage container. According to the invention, the sensing area is increased by using the inner interface and the outer interface, the detection sensitivity and the signal-to-noise ratio are effectively improved, the performance of the sensor can be optimized by optimizing structural parameters, and the sensor has the advantages of accurate measurement and strong anti-interference capability.

This document describes a transmission network, network elements, and usage methods, including a transmitter comprising a client-side input, a transmitter circuitry, and an antenna. The client-side input is configured to receive a baseband signal encoded with client data. The transmitter circuitry is configured to receive the baseband signal from the client-side input and generate an antenna feed signal based on the baseband signal. The antenna is configured to receive the antenna feed signal from the transmitter circuitry, generate a radiated signal based on the antenna feed signal, and couple the radiated signal into a hollow waveguide. Each radiated signal is a radiated electromagnetic wave configured for coherent detection and having a frequency in the range of 300 GHz to 10 THz.

There is provided a method for generating broadband radiation, the method comprising providing a hollow waveguide having an entrance and an exit and comprising a molecular gas; varying an electric field within the hollow waveguide to alter a rotational energy state of the molecular gas from a first state to a second state; and providing the pump radiation to the entrance of the hollow wave guide to 5 generate the broadband radiation at the exit by Raman scattering from the molecular gas in the second state.

Optical hollow waveguide assembly (11b) has an optical hollow waveguide (11a) for guiding illumination light (3) with a base body (21) having a continuous waveguide cavity (22) with a waveguide inlet (12) and a waveguide outlet (14), wherein a waveguide cavity inner wall of the waveguide cavity (22) is designed to be highly reflective for the illumination light (3), at least under grazing incidence. The hollow waveguide assembly (11b) further comprises a waveguide purging device (26, 34; 42) for purging the waveguide cavity (22) with a purging gas (29), comprising a purging gas connection (27; 35; 43; 54) and at least one nozzle (28) downstream of the purging gas connection (27) in order to supply the purging gas (29) at least indirectly to the waveguide outlet (14) in order to generate a purging gas flow from the waveguide outlet (14) to the waveguide inlet (12).

This invention relates to a radar system for detecting the surrounding environment, comprising: - a circuit board carrying at least one high-frequency component having at least one element for direct transmission or reception; and - a molded part having one or more single antennas on its upper side for transmitting and / or receiving radar signals; - wherein the connection between at least one transmitting or receiving element of the high-frequency component and the at least one single antenna on the upper side of the molded part is at least partially achieved through an embedded hollow waveguide. The transmitting / receiving element of the high-frequency component transmits along the direction of the circuit board, and the circuit board is permeable to radar waves in this region. The molded part is electrically connected to the circuit board by soldering and / or conductive adhesive. The waveguide is input from a permeable portion of the circuit board, and the molded part is constructed of a single layer of at least partially metallized plastic components.

A microwave system includes a molding compound layer having opposing first and second surfaces, an integrated circuit device at least partially surrounded by said molding compound layer to define a fan-out area located laterally outside the integrated circuit device's outline, a plurality of through-mold vias within said fan-out area extending through said molding compound layer between said first and second surfaces, a re-distribution layer stack extending parallel to said second surface and comprising conducting signal paths, and a substrate comprising a first surface extending parallel to the molding compound layer. The re-distribution layer stack is positioned on top of an array of solder balls carried by the substrate. The system also includes two coupling slots arranged on different levels to resonantly couple with each other, and at least one hollow waveguide with an open (coupling) aperture at one end in direct proximity of one of said two coupling slots.

The application provides an omnidirectional antenna and a radio frequency module based on a waveguide structure, wherein antenna radiation is provided on both upper and lower sides of a PCB circuit board, so that the overall antenna radiation can cover an almost omnidirectional range, and the omnidirectional radiation characteristic of the antenna is realized. The omnidirectional beam coverage effect can be realized by a single antenna, and the combination with the PCB circuit board is good in stability, so that the integration of the module as a whole is increased, thereby the product is small in size, low in cost, regular in shape, and beneficial to installation; in addition, since electromagnetic waves are transmitted through a hollow waveguide transmission path in the application, the selection of the board material of the PCB circuit board does not need to consider the high-frequency characteristic requirement of the antenna, and a conventional PCB circuit board material can be used, which will further reduce the product cost, and make the module more economical and practical; finally, the directional diagram of the omnidirectional antenna has strong adjustability, and can be customized and adjusted according to the application scene requirement, so that the market applicability is strong.

A radar sensor. The radar sensor has a hollow waveguide structure and a high-frequency module, which are arranged on opposite sides of a printed circuit board, and has a coupling device for transmitting microwave signals between the high-frequency module and the hollow waveguide structure, the coupling device having a dielectric waveguide manufactured separately from the printed circuit board.