19 results about "Slotted waveguide" patented technology

The utility model discloses a slot waveguide array antenna attached to the outer side of an elastic wall. The slot waveguide array antenna comprises a protection base embedded in the elastic wall and an antenna substrate attached to the outer side of the elastic wall. The bottom of the antenna substrate is welded with a connecting socket, the connecting socket is inserted into the protection base, one side of the upper surface of the antenna substrate is provided with an inclined chamfer, and the upper surface of the antenna substrate is provided with slot guided waves. The utility model provides a detection antenna which is suitable for being used on a missile, can save the space of the whole missile, is high in performance and narrow in radiation pattern of a pitching surface, and in order to improve the available design space of the antenna, reduce the design difficulty and save the space of the whole missile, a transmitting-receiving antenna which is conventionally arranged on the inner side of the missile wall and is conformal with the missile wall is improved into a transmitting-receiving antenna which is attached to the outer side of the missile wall. The available design space of the antenna is increased to a great extent by arranging the antenna on the outer side of the missile wall, so that the design difficulty is reduced, the antenna performance is improved, and the whole missile space is saved.

Structures for a photonics chip that include a photodetector and methods of forming such structures. The structure comprises a photodetector including a pad and a semiconductor layer on the pad. The structure further comprises a waveguiding structure including a first waveguide core, a second waveguide core, a slot between the first waveguide core and the second waveguide core, and a plurality of waveguide core segments. The waveguiding structure is adjoined to a side edge of the pad adjacent to the semiconductor layer. Each of the plurality of waveguide core segments includes a portion that is disposed in the slot.

The utility model relates to the technical field of terahertz radio frequency circuits, solves the technical problems of narrow relative bandwidth and complex processing of a terahertz frequency band waveguide duplexer, and particularly relates to a terahertz multistage coupling type duplexer easy to realize by CNC (computer numerical control). Comprising a duplexer main body structure which is formed by separably combining an E-plane slotted waveguide structural body A and an E-plane slotted waveguide structural body B. The duplexer main body structure is formed by cascading an E-plane Y-type junction with two filters and is provided with an input waveguide, a low-frequency output waveguide and a high-frequency output waveguide. Compared with a traditional T-shaped junction, the T-shaped junction is more suitable for the design of a broadband waveguide duplexer, and the compactness and simplicity of the structure are kept. Actual measurement shows that 24% of total working bandwidth is obtained, and the overall performance of a terahertz communication system is further improved.

The present invention discloses a radio frequency transmit and receive assembly kit comprising a slotted waveguide antenna assembly (100) wherein the slotted waveguide antenna assembly (100) comprises a plurality of sets of slotted waveguide antennas wherein each of the plurality of sets of slotted waveguide antennas comprises antenna feed elements forming a set of a plurality of antenna feed elements; and a circuit arrangement (306) for transmitting and receiving radio frequency (RF) signals wherein the circuit arrangement further comprises one or more circuit connection elements adapted to form an RF feed connection with an antenna feed element of the plurality of antenna feed elements, the slotted waveguide antenna assembly is mountable to the circuit arrangement in a plurality of different orientations, where, in each orientation, a particular one of the antenna feed elements forms an RF feed connection with a respective one of the circuit connection elements.

The application discloses a high-power microwave waveguide slot antenna array, and aims at solving the problem that a rectangular waveguide slot antenna cannot radiate in extreme temperature. The application is composed of a vacuum window sealed power divider, a partition waveguide, N sets of flanges, N curved waveguides and N high-power microwave rectangular waveguide slot antennas with dielectric covers. The microwave is divided by the vacuum window sealed power divider and then input into the partition waveguide, the N sets of microwaves are transmitted through the N sets of flanges and the curved waveguides, and then input into the N high-power microwave rectangular waveguide slot antennas with dielectric covers, and finally radiated. The vacuum window sealed power divider is composed of a power divider main body, a welded cover, a sealing plate and a dielectric window. The partition waveguide is composed of a connecting plate and a partition plate. The curved waveguide is composed of a vertical waveguide and a horizontal waveguide. The high-power microwave rectangular waveguide slot antenna with the dielectric cover is composed of a dielectric cover, a slotted waveguide, a support column and a support rod. The application has the advantages of compact structure, large power capacity and application in extreme temperature.

An apparatus (1) for pasteurizing food products, for example fresh pasta products, the apparatus (1) comprising: - a tunnel structure (2) defining at least one cavity (3); - a conveyor belt (4) for conveying the food products along a conveying direction (A-A) inside the cavity (3); - at least a first group of microwave inlets (5a) and a second group of microwave inlets (5b), the two groups of microwave inlets (5a, 5b) being configured to emit microwave radiations within the cavity (3), each microwave inlet (5a, 5b) of the two groups comprising a slotted waveguide, wherein all the microwave inlets (5a) of the first group are equally inclined with respect to the conveying direction (A-A) and all the microwave inlets (5b) of the second group are equally inclined with respect to the conveying direction (A-A) but differently inclined with respect to the microwave inlets (5a) of the first group.

The invention discloses waveguide equipment with an external sensor and an internal environment real-time detection method thereof. The method comprises the steps that a temperature and humidity sensor and a detection circuit are integrated in a shielding box through a slotted waveguide space synthesizer to form an external sensor, and environment monitoring is achieved through multi-sensor redundancy layout; establishing a temperature and humidity correction model through a least square method, and determining a data effective range in combination with a 3 sigma criterion; after abnormal values of real-time data are removed, the average value is taken to calculate the actual temperature and humidity, and the number of a fault sensor is automatically reported. The device adopts a graded waveguide structure, the microstrip probe and the waveguide cavity are accurately coupled through the unique waveguide slotting design, and the height difference between the bottom plate and the upper cover plate guarantees the center positioning of the probe. According to the invention, waveguide sealing performance and detection compatibility are realized through external sensor layout, the measurement precision is improved by combining a data fusion algorithm, and remote fault positioning and equipment health management are supported.

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.

This invention relates to the field of magnesium alloy brazing technology, specifically to a current-assisted vacuum brazing fixture and method for magnesium alloys. A MgAlAg alloy solder was designed and matched, and the main welding process parameters were defined: applied pressure of 10-50 kPa, temperature of approximately 450°C, and holding time of 3-5 minutes, ensuring that the vacuum brazing strength of the magnesium alloy is not less than 65 MPa. This invention provides the current-assisted vacuum brazing process steps for magnesium alloys, which can be applied to radar slotted waveguide antennas, and improves the shear strength of the welded joint by 90% compared to existing methods.

The invention relates to a transport system having a mobile device that can be moved along a road section, in particular a track, in which, for high-frequency data transmission, a slotted waveguide of the transport system is arranged parallel to the road section, said slotted waveguide surrounding a cavity, the invention relates to a mobile device for a motor vehicle, in particular a motor vehicle, comprising a slotted waveguide having a cavity which opens into the environment via a slot of the slotted waveguide which runs through in the direction of a travel route, in particular in the direction of a track, the mobile device having an antenna which projects through the slot of the slotted waveguide into the cavity of the slotted waveguide, in particular for inputting or outputting electromagnetic waves, the slotted waveguide being made of a steel sheet as a bent part.

Structures for a phase shifter and methods of forming such structures. The structure comprises a first waveguide core, a second waveguide core laterally adjacent to the first waveguide core, and a third waveguide core laterally adjacent to the second waveguide core. The second waveguide core and the first waveguide core are separated by a first slot, and the third waveguide core and the second waveguide core are separated by a second slot. The structure further comprises a layer that overlaps with respective portions of the first waveguide core, the second waveguide core, and the third waveguide core. The layer comprises a first electro-optic material.

The invention relates to a transport system having a mobile part movable along a route, in particular a rail, wherein a slotted waveguide of the transport system is laid parallel to the route for high-frequency data transmission and surrounds a cavity which opens into the surroundings by way of a slot of the slotted waveguide that is continuous in the route direction, in particular in the rail direction, wherein the mobile part comprises an antenna which protrudes through the slot of the slotted waveguide into the cavity of the slotted waveguide, in particular for incoupling or outcoupling electromagnetic waves, wherein the slotted waveguide is produced as a stamped and bent part made from a steel sheet metal.

Apparatuses and methods for removing caps, such as NMR rotor caps. The apparatuses and methods may permit caps to be removed in a manner that minimizes damage to equipment and instruments. Microwave waveguides that may include an elongated waveguide, a spline horn, and a slotted waveguide. Analytical instruments that include the waveguides.

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

Transport system with a mobile unit that can be moved along a route, in particular a rail, wherein a slotted waveguide of the transport system for high-frequency data transmission is laid parallel to the track, which surrounds a cavity that opens into the environment via a slot of the slotted waveguide which extends in the direction of travel, in particular in the direction of the rail, wherein the handset has an antenna which projects through the slot of the slotted waveguide into the cavity of the slotted waveguide, in particular for coupling in or coupling out electromagnetic waves, the slotted waveguide is manufactured as a stamped and bent part from a sheet steel part.

A slit waveguide optical switch based on phase change materials, belonging to the field of optoelectronic modulation technology, is used to solve the problem that silicon-based optical switches based on thermo-optical effects and carrier dispersion effects cannot simultaneously achieve low power consumption, compact size, wide operating bandwidth, and low insertion loss. The optical switch includes an incident region, a slit modulation region, and an exit region connected sequentially along the optical transmission path. The first S-shaped slit, the rectangular slit, and the second S-shaped slit are connected sequentially. The incident tapered silicon waveguide, the rectangular vanadium dioxide waveguide, and the exit tapered silicon waveguide are connected sequentially. The incident curved silicon waveguide, the rectangular silicon waveguide, and the exit curved silicon waveguide are connected sequentially, forming a coupling waveguide. The S-shaped slit waveguide structure reduces the coupling loss caused by the optical signal entering and exiting the slit waveguide. The modulation function is achieved by applying external electrical excitation to cause a phase change in vanadium dioxide. This results in a compact size, low insertion loss, and good process tolerance.

Apparatuses and methods for removing caps, such as NMR rotor caps. The apparatuses and methods may permit caps to be removed in a manner that minimizes damage to equipment and instruments. Microwave waveguides that may include an elongated waveguide, a spline horn, and a slotted waveguide. Analytical instruments that include the waveguides.

A radar system includes antenna modules that have a first planar slotted waveguide antenna array configured for radiating electromagnetic waves, and a second planar slotted waveguide antenna array configured for receiving electromagnetic waves. A rotation system is configured for supporting and rotating the antenna modules around a vertical axis, with the antenna modules arranged in a back-to-back position on opposite sides of a plane intersecting the vertical axis of rotation. There is also provided another radar system comprising a first radar antenna module that has a first planar slotted waveguide antenna array configured for radiating electromagnetic waves, and a second planar slotted waveguide antenna array configured for receiving electromagnetic waves, where each of the planar slotted waveguide antenna arrays have several longitudinal extending waveguide columns. The waveguide columns have a front side and a rear side with a plurality of cavity slots on the front side.