95 results about "Coaxial waveguides" patented technology

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.

The utility model discloses an annular megawatt-level power combiner, which comprises two groups of N-path coaxial waveguide power combiners for realizing N-in-one and one group of 2-path power combiners for realizing 2-in-one, each group of N-path coaxial waveguide power combiners comprises N coaxial input ports, N waveguide tubes and N-1 waveguide elbows; the N coaxial input ports are respectively and correspondingly arranged on the N waveguide tubes, and every two waveguide tubes are connected through a waveguide elbow, so that each group of N coaxial waveguide power combiners form a semi-ring structure; the output ends of the two groups of N-path coaxial waveguide power combiners are connected with the input end of the two-path power combiner, and a twisted waveguide is additionally arranged at the output end of the two-path power combiner, so that the output end of the two-path power combiner rotates by 90 degrees to form the output end of the annular megawatt-level power combiner.

The invention provides a relativistic magnetron based on side cavity magnetic coupling coaxial TEM mode extraction, which comprises an anode, a cathode and a magnet, and is characterized in that the anode comprises an outer cylinder, a long anode block, a short anode block, an angular coupling slot, a reflection ring, a coaxial waveguide inner conductor and a coaxial waveguide outer conductor; the long anode blocks and the short anode blocks are alternately distributed in the outer cylinder and are aligned at one end of the outer cylinder, and the other end is alternately distributed in a long-short manner; the short anode blocks, the adjacent long anode blocks and the reflection ring form a fan-shaped edge cavity, and the angular coupling slots are arranged on the outer wall of the fan-shaped edge cavity. The coaxial waveguide outer conductor is connected with the outer cylinder, and the inner conductor is connected with the long anode block. When the magnetron works in a pi mode, the high-frequency magnetic fields of the adjacent resonant cavities are coupled to the coaxial waveguide in an in-phase manner through the angular coupling slots, the TEM fundamental mode is excited to perform axial transmission, and full-cavity microwave energy coupling extraction is realized. Microwave energy is extracted in a side cavity magnetic coupling mode, the output power and efficiency are improved, and the structural design is simplified.

Power-combining devices and more particularly spatial power-combining and related structural arrangements are disclosed. Such structural arrangements involve mechanical connections between center waveguide sections and input and / or output coaxial waveguide sections that provide scalable structures for different operating frequency bands, improved mechanical connections, and / or improved assembly. Exemplary structural arrangements include structures that extend through center waveguide sections and into input and / or output coaxial waveguide sections, integrated mechanical structures within the center waveguide section, compression fit arrangements, dielectric inserts arranged within channels of coaxial waveguide sections, and / or various combinations thereof.

The invention discloses a contact-type terahertz characteristic parameter test system and a test error correction method, and belongs to the technical field of tests.The test system is based on a 110GHz vector network analyzer, adopts a coaxial waveguide converter for frequency bands below 110GHz, and facilitates system integration; for frequency bands above 110 GHz, 110 GHz signals are used as excitation, the link size of the terahertz module is greatly reduced, the signal quality is remarkably improved, and the terahertz module has the characteristics of large dynamic state, high stability and the like by being matched with a material characteristic testing device, and can realize high signal-to-noise ratio acquisition of original signals; according to the test method provided by the invention, while the test precision is ensured, the operation complexity of the test system is reduced, automatic test of characteristic parameters can be realized, and the test precision can reach + / -1%; the power-adjustable terahertz receiving and transmitting integrated module can meet the test requirements of samples with different attenuation characteristics by adjusting the signal power; by using the terahertz detector, the complexity of a traditional test system is reduced, and the test dynamic state of the system is improved.

A relay for a beam of wireless power and a satellite with the relay are disclosed. The relay includes: an array of coaxial waveguide elements, each element including: an input polarizing section, an output polarizing section, and a phase shifting section located between said input and output polarizing sections, wherein said input polarizing section, said output polarizing section, and said phase shifting section are controllably rotatable around a longitudinal axis of said coaxial waveguide; and a processor to control rotation of said input polarizing section, said output polarizing section, and said phase shifting section.

The present disclosure provides a dual-band dual-polarization splitter connecting a cross-shaped waveguide power divider to with an E-plane waveguide magic T and an ortho-mode transition through an E / H-plane 90° curved waveguide to form a new type of coaxial waveguide ortho-mode transition, thereby implementing the structure of coaxial circular waveguide feeding in high and low frequencies at the same time, reducing the length of the high-frequency transmission line, and reducing the transmission loss. Meanwhile, the present disclosure implements dual-polarization transmission in each frequency band, and can flexibly switch between vertical polarization and horizontal polarization when the dual-polarization has been converted to the single-polarization.

A system for efficiently generating or originating a tailored electromagnetic (EM) wave having a lower velocity than the speed of electromagnetic waves in free space includes a coaxial waveguide which extends linearly and a sinewave current generator. The coaxial waveguide includes a tubular outer body and a tailored emitting antenna disposed coaxially within the tubular outer body. The tubular outer body is formed of a first conductive material and defines a space therein which may be maintained as vacuum. The tailored emitting antenna is constructed physically and electrically by at least three phase-shifted sub-antennas connected in series, each of the sub-antennas being formed of a second conductive material which is less conductive than the first conductive material. The sinewave current generator generates multiple phase-shifted sinewave currents which are respectively input to the sub-antennas.

Power-combining devices and, more particularly, mechanical fastener arrangements in spatial power-combining devices and related methods are disclosed. Mechanical fastener arrangements promote mechanical connections between center waveguide sections and input and / or output coaxial waveguide sections that provide scalable structures for different operating frequency bands, improved mechanical connections, and / or improved assembly. Exemplary mechanical fastener arrangements attach conductors of input and / or output coaxial waveguide sections to center waveguide sections with mechanical fasteners. Heads of mechanical fasteners are positioned within center waveguide sections and nuts secured to the mechanical fasteners are in positions that are outside center waveguide sections.

The present invention relates to a mode-extracting device (500) for an electromagnetic signal comprising, from upstream to downstream: - a first orthomode junction (1) comprising: - a central core (121) and - a first coaxial waveguide (120) extending to a coaxial transition zone (11); - a second coaxial waveguide (140) extending from the coaxial transition zone (11) to a downstream end (15); - four first output ports (14); - a waveguide (150) extending from the end (15); - four first branches (2a); - a second junction (3, 4) comprising an output waveguide (31, 41), a second output port (311, 411), and four second input ports (33, 43), each connected orthogonally to one of the four second branches (2b) and to the waveguide output waves (31, 41). Figure for the abstract: Fig. 2

The application discloses a compact high-power multilayer coaxial waveguide power divider, and belongs to the field of high-power mode power distribution. The power divider comprises an upper layer coaxial radial power division structure, a lower layer coaxial radial power division structure and a variable inner diameter coaxial line structure. The upper layer coaxial radial power division structure comprises n upper layer output ports, the lower layer coaxial radial power division structure comprises n lower layer output ports, and the variable inner diameter coaxial line structure is used for introducing part of power of an upper layer coaxial input port input signal into a lower layer coaxial line part, and the remaining power enters an upper layer radial line part. Signals entering the upper layer radial line part are equally divided into n paths of output, and signals entering the lower layer coaxial line part are equally divided into n paths of output through a lower layer radial line part. The application can break through the restriction of the number of radial power division, introduce more power division paths in a limited radial radius, and has the advantages of low loss, high power capacity and more compact structure compared with a single layer radial power division system under the premise of the same number of power division.

The present invention discloses a novel plasma coaxial electrodeless ultraviolet lamp system, which relates to the technical field of coaxial electrodeless ultraviolet lamps. The system comprises an inner conductor tube, an ultraviolet lamp tube plugged into one end of the inner conductor tube, and an outer conductor tube sleeved around the inner conductor tube and the outer side of the ultraviolet lamp tube. The inner conductor tube is provided with a feed port on the side away from the ultraviolet lamp tube. A ignition structure for tip discharge is provided on the tube wall of the inner conductor tube, and an adjustable support assembly is provided inside the inner conductor tube. The ignition structure is provided on the inner conductor tube for exciting strong electromagnetic waves, which facilitates the ultraviolet lamp tube to form a plasma excitation structure capable of exciting the ultraviolet lamp tube to generate plasma under the action of a strong electric field. The inner conductor tube is a hollow copper tube. The present invention utilizes the characteristic of significantly enhanced conductivity after plasma excitation to make it the inner conductor of the coaxial waveguide, greatly reducing the weight of the lamp. Multi-physics field simulations were also performed, and the results showed that the electromagnetic field and plasma in the lamp were uniformly distributed after excitation.

The present invention discloses a waveguide slot array antenna based on rectangular micro-coaxial technology, which belongs to the field of microwave antenna technology. It includes a metal waveguide slot array antenna, a micro-coaxial transmission line, a coaxial-waveguide conversion transition structure and a Butler matrix. The metal waveguide slot array antenna has four evenly arranged slots distributed on the upper surface of the micro-coaxial structure, and radiates electromagnetic waves to the outer space through the slots. The coaxial-waveguide conversion transition structure is arranged between the metal waveguide slot array antenna and the micro-coaxial transmission line, and is matched to a ridge waveguide through a micro-coaxial gradient structure transition, and then the ridge waveguide is gradually matched to the waveguide to realize the coaxial-waveguide structure conversion. The present invention has the advantages of compact structure, high radiation efficiency, high isolation, small feeding loss, low mutual coupling effect and easy integration.

The utility model discloses a mountain landslide early warning device based on waveguide deformation relates to geological disaster monitoring field, including microwave source, circulator, waveguide, lossy medium, waveguide load, power detection module and signal processing module, the output of microwave source is connected with circulator's Port1 port through radio frequency cable, and Port2 port of circulator is connected with the input of waveguide through coaxial waveguide adapter, and Port3 port of circulator is connected with power detection module through radio frequency cable, the inside chamber end of waveguide is filled with lossy medium, and the outer port of waveguide is fixedly connected with waveguide load, the input of waveguide load is in close contact with lossy medium, and the output of power detection module is connected with the input of signal processing module through AD acquisition circuit. The utility model overcomes the deficiency of prior art, can realize the sensitive capture and accurate evaluation to mountain tiny slip. Thus effectively prevent the occurrence of landslide disaster.

Waveguides, transitions, and conductors for propagating electromagnetic energy. An assembly includes a waveguide transition device comprising two or more coaxial waveguides. The assembly includes a radiating component comprising two or more radiating elements configured to receive or transmit electromagnetic energy through two or more signal ears, wherein each of the two or more signal ears is in communication with a coaxial waveguide of the two or more coaxial waveguides.

The present invention discloses a compact high-power waveguide radial power distributor / synthesizer, the purpose of which is to solve the problems of narrow bandwidth, large lateral size, low power capacity, etc. of the existing power distributor / synthesizer. The present invention is composed of three parts, namely, a conical circular waveguide-coaxial waveguide transition structure, a coaxial waveguide-circumferential rectangular waveguide array transition structure, and a circular curved waveguide array, which are sequentially coaxially connected and arranged in a central rotational symmetric manner along the central axis. The conical circular waveguide-coaxial waveguide transition structure is composed of a circular waveguide, a conical circular waveguide-coaxial transition waveguide, and a coaxial waveguide; the coaxial waveguide-circumferential rectangular waveguide array transition structure is composed of N fan-shaped-rectangular waveguide transition sections arranged circumferentially around the central axis; the upper end of the coaxial waveguide-circumferential rectangular waveguide array transition structure is a section surrounded by N fans, and the lower end is a section surrounded by N rectangles. The circular curved waveguide array is composed of N curved waveguides. The present invention has a wide working frequency band, a small lateral size, and a power capacity of the order of GW.

The present invention provides a single-polarization low-gain horn antenna for 5G testing, including a coaxial waveguide converter, a horn tube, and a radio frequency connector. The coaxial waveguide converter is provided with a straight waveguide cavity with one end open, the horn tube is provided with a horn cavity with two ends open, the coaxial waveguide converter is connected to one end of the horn tube, the straight waveguide cavity and the horn cavity form an antenna cavity, the radio frequency connector is provided with a radio frequency end, the radio frequency connector is fixed on the coaxial waveguide converter, the radio frequency end is provided in the straight waveguide cavity, and the gain value of the horn antenna is not greater than 12dBi. The present invention adopts a combination of a coaxial waveguide converter, a horn tube, and a radio frequency connector to form a monopole antenna, which reduces the difficulty of antenna processing. At the same time, the coaxial waveguide converter can cooperate with different horn tubes to achieve a change in gain value and improve the practicality of the monopole antenna.

The invention discloses a waveguide, a coaxial cable waveguide side feed structure and a coaxial waveguide converter, and belongs to the technical field of radio frequency coaxial and waveguide side feed, the waveguide comprises a waveguide tube, one end of a waveguide port of the waveguide tube is provided with a short circuit block, the waveguide tube is provided with a first mounting port and a second mounting port, a first metal support member is embedded in the first mounting port, and a second metal support member is embedded in the second mounting port; the first mounting port is provided with a first metal supporting piece for the radio frequency cable to be stripped to a core wire area of a core wire or a coaxial inner conductor of the coaxial connector to be embedded, and the second mounting port is provided with a second metal supporting piece for the non-stripped section of the radio frequency cable or the coaxial section of the coaxial connector to be embedded. The coaxial cable waveguide side feed structure comprises a radio frequency cable and the waveguide. The coaxial waveguide converter comprises a coaxial connector and the waveguide. Through the optimization of the structure, the conversion power capacity is at least increased by more than eight times compared with a traditional high-power scheme, and the power reliability is obviously improved in an occasion where the requirement for the power capacity of a user side is high or a low-pressure environment exists.

The utility model discloses a waveguide practical training system. The system comprises a microwave signal generator, a frequency meter, a microwatt power meter, a frequency selective amplifier, a variable attenuator, a fixed attenuator, a waveguide directional coupler, a magic T, a horn antenna, a measuring line, a sliding screw tuner, a crystal detector, a matched load, a coaxial waveguide converter, a short circuit plate, a reflecting plate, a straight waveguide and a frequency expander. According to the utility model, a product modular structure design is adopted, so that each student can understand the basic composition, working principle and simulation analysis of the microwave system, and the function and measurement method of each module in the system.

The application provides a relativistic magnetron based on edge-coupled magnetic coupling coaxial TEM mode extraction, which comprises an anode, a cathode and a magnet, wherein the anode comprises an outer cylinder, long anode blocks, short anode blocks, angular coupling slots, a reflecting ring, a coaxial waveguide inner conductor and a coaxial waveguide outer conductor. The long anode blocks and the short anode blocks are alternately distributed inside the outer cylinder, are aligned at one end of the outer cylinder and are alternately distributed in length at the other end; the short anode blocks, the adjacent long anode blocks and the reflecting ring form a fan-shaped edge cavity, and the angular coupling slots are arranged on the outer wall of the fan-shaped edge cavity. The coaxial waveguide outer conductor is connected with the outer cylinder, and the inner conductor is connected with the long anode blocks. When the magnetron works in a pi mode, the high-frequency magnetic field of adjacent resonant cavities is coupled to the coaxial waveguide through the angular coupling slots in phase, the TEM base mode is excited to be axially transmitted, and the full-cavity microwave energy coupling extraction is realized. The microwave energy is extracted through the edge-coupled magnetic coupling mode, the output power and the efficiency are improved, and the structural design is simplified.

The invention discloses a high-power-capacity power divider based on a mixed mode, and belongs to a power distribution / synthesis technology in the technical field of high-power microwaves. The objective of the invention is to solve the problems of insufficient power capacity and coaxial inner conductor end surface electric field concentration caused by small cross section size when an existing power divider is applied to high frequency. The power divider integrates circular waveguide TM0n mixed mode excitation, conversion from a mixed mode to a coaxial waveguide TEM mode and an inner conductor end face strong field control technology, and comprises an input circular waveguide, inclined plane transition, a large over-mode ratio circular waveguide, a coaxial waveguide, a radial line and a rectangular waveguide, and a groove is formed in the inner conductor end face of the coaxial waveguide. While the waveguide section is increased to improve the power capacity of the main body structure, the end surface electric field peak value is effectively inhibited, and the system power capacity is improved. The invention is mainly applied to a microwave system requiring high power distribution or synthesis, and has the advantages of high power capacity, low surface electric field, high conversion efficiency and wide working bandwidth.

The utility model discloses a coaxial waveguide converter, and belongs to the technical field of microwave passive devices. The novel coaxial waveguide converter comprises a waveguide cavity and further comprises a matching cover plate, the matching cover plate is installed on the waveguide cavity, a coaxial connector shell is horizontally inserted in one side of the waveguide cavity, a coaxial connector jack is horizontally inserted in the other side of the waveguide cavity, and the coaxial connector shell is connected with the coaxial connector jack. The coaxial connector shell and the coaxial connector jack are respectively arranged at two sides of the waveguide cavity, the axes of the coaxial connector shell and the coaxial connector jack coincide, the coaxial connector shell and the waveguide cavity are welded into a whole through silver brazing to form a combined body, an insulating medium in a traditional coaxial connector is removed, a pure air medium structure is adopted, and the coaxial connector shell and the coaxial connector jack are integrated to form the combined body. The coaxial waveguide converter is ensured to be stable in electrical performance index and reliable in mechanical performance in a high-temperature environment above 400 DEG C.

The invention discloses a terminating type coaxial waveguide adapter and an optimization method thereof.The terminating type coaxial waveguide adapter comprises a coaxial connector, a waveguide adapter lower cavity and a waveguide adapter upper cavity, the coaxial connector is provided with an inner conductor, the waveguide adapter lower cavity is provided with a primary waveguide cavity, a metal diaphragm and a standard rectangular waveguide which are sequentially arranged, and the waveguide adapter upper cavity is provided with an outer conductor. The inner conductor extends into the primary waveguide cavity for a set length along the center of the wide side of the primary waveguide, and the center of the inner conductor keeps a set distance from the short circuit surface of the waveguide cavity; the metal diaphragm is integrally formed in the lower cavity of the waveguide adapter and is used for realizing impedance matching between the primary waveguide and the standard rectangular waveguide and deflecting a signal by 90 degrees along the transmission direction of the waveguide; the upper cavity of the waveguide adapter is in contact with the lower cavity of the waveguide adapter in a plane crimping mode, so that the structure of the waveguide is closed. According to the invention, the structure complexity, the assembly difficulty and the production cost are greatly reduced while the properties of large bandwidth and low loss of the adapter are maintained.

The utility model relates to the technical field of electromagnetic wave conduction, in particular to a coaxial-waveguide power synthesis device, which comprises a waveguide tube, an inner conductor and a coaxial, the waveguide tube comprises an open end and a closed end, the coaxial penetrates through the closed end and is connected with the inner conductor, the coaxial-waveguide power synthesis device further comprises a short-circuit block, one end of the short-circuit block is connected with the closed end, and the other end of the short-circuit block is connected with the inner conductor. One end of the waveguide tube is connected with the closed end, the other end of the waveguide tube is connected with the inner conductor, the inner conductor, the closed end and the inner wall of the waveguide tube are arranged at intervals, and the coaxial-waveguide power synthesis device can transmit heat of the inner conductor to the waveguide tube so as to dissipate the heat, reduce reflection and improve electromagnetic performance.

This invention provides a Ka / V band dual-frequency conical beam antenna for millimeter-wave detection, comprising an upper square metal structure, a lower square metal structure, a coaxial waveguide, an open circular waveguide, and a feed network. The open circular waveguide is the main radiating part, transitioning from the coaxial waveguide to the open circular waveguide, allowing the open circular waveguide to operate in TM mode to generate a radially symmetrical electric field distribution. By adjusting the size of the open circular waveguide, TM01 and TM02 modes exist within it, respectively generating Ka / V band electromagnetic waves. This invention utilizes a shielded microstrip line to excite the fundamental TEM mode of the coaxial waveguide before transitioning to the TM mode of the circular waveguide, which can suppress other unwanted modes, thereby making the omnidirectional radiation of the antenna more uniform. The coaxial waveguide is a stepped coaxial waveguide with varying radius. The stepped structure of the waveguide inner diameter can achieve good impedance matching. The structure is simple, easy to implement, and has dual-frequency, dual-tilt radiation characteristics.

The invention provides an ultra-wideband multimode self-tracking coaxial four-ridge horn feed source and a feed source system, and relates to the field of satellite communication, satellite measurement and control and electronic reconnaissance. The feed source comprises a coaxial horn, four same ridge pieces are arranged at the positions of 0 degree, 90 degrees, 180 degrees and 270 degrees on the inner wall of an outer conductor of the coaxial horn in the circumferential direction, a probe perpendicular to the axis direction of the horn is arranged at the tail of each ridge piece, and a reflection cavity is formed between each probe and a bottom plate at the tail of the coaxial horn. The coaxial horn inner conductor is of a conical structure with the radial height gradually reduced, and the coaxial horn inner conductor extends out of the coaxial horn mouth surface. According to the invention, a dual-mode sharing technology combining a TE11 mode and a TEM mode in a coaxial waveguide is adopted, and a communication function and a self-tracking function can be realized at the same time in a quintuple-frequency bandwidth. The ultra-wideband monopulse self-tracking feed source system is excellent in sum and difference mode performance, compact in structure and wide in application scene, and is a novel and easy-to-implement ultra-wideband monopulse self-tracking feed source system.

An example of a plasma device includes: a coaxial waveguide having an inner conductor and an outer conductor surrounding the inner conductor, wherein a first gap is provided between the outer conductor and the inner conductor, the coaxial waveguide having a shape branched at a plurality of branch portions; a plurality of rods having a conductor and a dielectric surrounding the conductor, wherein a second gap is provided between the dielectric and the conductor, the plurality of rods connecting both ends of the coaxial waveguide branched at the branch portion to connect the first gap and the second gap; and a conductive post provided at a branch portion of the coaxial waveguide obtained by branching at the branch portion, the conductive post being insertable into and removable from the first gap.

The utility model discloses a kind of straight-through coaxial waveguide radial power combiners, including outer cavity, inner cavity, cover plate, probe, medium, output end connector, input end connector, output connector mounting screw, cover plate mounting screw, input connector mounting screw, the probe is set in the bottom of inner cavity, the outer cavity, inner cavity, cover plate are sequentially connected from top to bottom, medium is sleeved on probe, output end connector is set above outer cavity by output connector mounting screw, the input end connector is set in the bottom of cover plate by input connector mounting screw.The utility model input connector and output connector are on the line of direction opposite in length direction, save the space of chassis in height direction, make chassis height lower;Save the space of chassis in width direction, make power amplifier module, power module better realize layout.

The invention discloses a compact broadband circular waveguide TM01 mode bending structure, and aims to solve the technical bottleneck that an existing circular waveguide TM01 mode bending structure is difficult to consider the aspects of bandwidth, structural compactness and power capacity at the same time. The antenna is composed of two circular waveguide TM01 mode power dividers, two E-plane U-shaped folded waveguide arrays and two E-plane rectangular bent waveguide arrays. The coaxial waveguide TEM mode and the multi-path rectangular waveguide TE10 mode are adopted as the middle transition mode of the antenna, and the problem of mode competition in a traditional bending structure is effectively solved. Meanwhile, by utilizing an E-plane U-shaped folded waveguide phase compensation technology, the length of each rectangular waveguide transmission path between the two circular waveguide TM01 mode power dividers is ensured to be consistent, the relative working bandwidth of which the transmission efficiency of a bent structure is greater than 95% is widened to be more than 40%, the power capacity is improved to the GW magnitude, and the distance between input / output ports is shortened to be within 5 times of the central wavelength.

The application discloses a kind of hole microwave irradiation auxiliary rock breaking method and device, comprising: S1, the rotating center of the cutting head end of heading machine is set with a hole;S2, a rack is arranged in the main shaft of heading machine, drill pipe and coaxial waveguide are placed side by side in the rack, wherein drill pipe and coaxial waveguide can rotate with main shaft;S3, lifting component and telescopic component are arranged in the main shaft, lifting component is used to drive rack to move in the main shaft along the radial direction of main shaft, so that drill pipe and coaxial waveguide are aligned with hole respectively, telescopic component is used to push the end of drill pipe or coaxial waveguide aligned with hole to extend out of cutting head;Wherein, multiple openings are set on the lateral side of coaxial waveguide.The application integrates "microwave cracking" into heading machine, the device is highly integrated, realizes drilling-microwave-heading integration, and the efficiency of heading is high;Unlike surface microwave cracking, hole microwave cracking has greater depth, longer distance for assisting rock breaking, and higher energy utilization rate.