123 results about "Waveguide flange" patented technology

A method for testing a device under test (DUT) is disclosed. The method comprises communicating signals wirelessly from a first plurality of patch antennae disposed on a top surface of the DUT to a second plurality of patch antennae disposed on a printed circuited within a handler device, wherein the handler device is operable to place the DUT in a socket of a tester system, and wherein the tester system comprises the handler device and a test fixture. The method further comprises communicating the signals captured by the second plurality of patch antennae using microstrip transmission lines to a patch antenna on the printed circuit board, wherein a first waveguide is mounted to the patch antenna using a first waveguide flange, and wherein the first waveguide flange is coupled to a first end of the first waveguide.

The invention discloses a low-passive intermodulation waveguide flange conversion device. By constructing a double-sided periodic metal unit array and in combination with a mechanical support structure, a noncontact transitional connection with a double-sided air gap is formed between common waveguide flange surfaces. The structural form, the size and the air gap size of the periodic metal unit are determined through specific steps, a suitable electromagnetic band gap characteristic is obtained, and it is ensured that electromagnetic waves cannot leak from the air gap. Thus, while the normal transmission of the electromagnetic waves is not affected, the internal noncontact effect of the waveguide transitional connection is achieved, the metal contact nonlinearity of the traditional waveguide flange connection is greatly eliminated, and low-passive intermodulation performance is achieved. The conversion device of the invention can realize low-passive intermodulation transitional conversion without changing the original waveguide flange structure, and has good universality. In addition, the device provided by the invention has a wideband working characteristic, can completely cover the corresponding waveguide working bandwidth, and can be applied to various high-power low-intermodulation microwave components and test systems.

The invention relates to a microwave heating device, wherein heating and drying of the microwave heating device are performed through industrial microwaves. According to the novel microwave heating device, intercoupling of a plurality of magnetrons is avoided due to the novel microwave power transmission and energy feedback mode and accordingly the output power and efficiency of the magnetrons is improved, the service life and the reliability of the magnetrons are improved, and accordingly the production is improved, the maintenance cost of the device is reduced, and energy resources are greatly saved. The microwave heating device comprises a rotatable metal outer cylinder and a metal inner cylinder which is provided with a microwave power radiation source; a coaxial annular chamber is formed in the metal outer cylinder; a supporting tube is arranged in the annular chamber; the supporting tube is provided with at least one microwave gap antenna group; the microwave gap antenna group is formed by a plurality of microwave gap antennas which are uniformly arranged surrounding the angular direction of the supporting tube; a waveguide exciter is connected with the microwave gap antennas through a waveguide flange plate; the microwave magnetrons are inserted into the waveguide exciter.

The invention relates to a microwave low-loss waveguide vacuum window, which is hermetically separated from normal temperature and normal pressure at one end of waveguide microwave signal transmission to low temperature and high vacuum at the other end. The window comprises an upper waveguide cavity seat and a lower waveguide cavity seat, wherein the upper waveguide cavity seat is provided with a standard waveguide flange used as a waveguide short joint; the lower waveguide cavity seat is hermetically connected with a vacuum Dewar outer wall; the combination of a double-layer film of polyimide and polytetrafluoroethylene is clamped between two waveguide ports of the upper waveguide cavity seat and the lower waveguide cavity seat to form the microwave vacuum window; and one side of the window is a normal temperature and normal pressure zone, and the other side of the window is a low temperature vacuum zone. The microwave low-loss waveguide vacuum window has good microwave transmission performance, namely low microwave loss and good standing wave in the signal transmission, has high-vacuum sealing performance, is used on a vacuum cover of high-sensitivity signal receiving equipment, and is suitable for sealing the waveguide port from L wave band to 8mm frequency band.

The invention discloses a waveguide filter, and relates to the field of electromagnetic field and microwave technologies. The waveguide filter comprises a first waveguide flange plate, a second waveguide flange plate, a first waveguide, a second waveguide and four hemispherical resonators, wherein the cavity wall of each hemispherical resonator is provided with a through rectangular groove which is used for suppressing a high-order resonance mode of electromagnetic waves in the hemispherical resonator so as to expand the spurious-free stopband bandwidth of the waveguide filter. The invention further discloses a manufacturing method of the waveguide filter. The structure of the waveguide filter is integrally printed by a selective laser sintering 3-D printer through adopting a metal powdermaterial, does not need assembly and debugging while achieving accurate processing and effectively improves the manufacturing efficiency.

A flexible and twistable terahertz waveguide assembly has a flexible waveguide cable with waveguide flange connectors at its ends. The flexible waveguide cable comprises a segmented tube of a plurality of tube segments which are connected to each other. The tube encloses a dielectric waveguide which is held by means of threads (filaments) at the center of the tube. The individual segments are tiltable and / or pivotable against each other, allowing bending and twisting of the waveguide cable.

The invention provides a planar waveguide, a waveguide filter and an antenna. The planar waveguide comprises a top printed circuit board (PCB), a bottom PCB, a plurality of shielding metal blocks, and a metal plate. A groove is opened at the top PCB, an air waveguide is formed by the grooved and the bottom PCB; and microstrip lines are arranged at the lower surface of the top PCB. The microstrip lines are at two ends of the groove and are arranged along extending lines of the groove. The plurality of shielding metal blocks are arranged along the microstrip lines and extended directions of the groove as well as are arranged at two sides of the microstrip lines and the groove. A first conversion part that is used for realizing signal transmission between the microstrip lines and the air waveguide is arranged between the microstrip lines and the bottom PCB below the groove. And working gravity frequency of the planar waveguide is f0; and under the frequency of the f0, a wavelength lambda of an electromagnetic wave in the air satisfies the following relationship: lambda = c / f0; the height Hb of one of the shielding metal blocks satisfies the following relationship: 0.75*lambda <= Hb <= 1.25*lambda / 4; the width Wb satisfies the following relationship: lambda / 8 <= Wb <= lambda; and a gap Wg between each two of the shielding metal blocks satisfies the following relationship: 0 <= Wg <= lambda / 2.

The invention discloses a low passive intermodulation waveguide flange and a design method thereof. Through designing periodic metal convex bodies on conventional flange surfaces, a non-contact structure is formed by arranging the metal convex bodies with another flange surface at a certain distance; through designing and calculating the parameters such as the size of the metal convex bodies and the distance between flanges, appropriate electromagnetic forbidden band characteristics are obtained; therefore, the suppression of electromagnetic wave leakage in flange clearance is realized, and the waveguide flange which is not contacted internally is formed combined with the mechanical connection structure. According to the passive intermodulation waveguide flange disclosed by the invention,through constructing the non-contact electromagnetic band-gap structure, the non-contact between flanges is realized without affecting the transmission of electromagnetic waves between waveguides, thecontact nonlinearity is eliminated, the passive intermodulation effect is effectively suppressed, and the requirements for materials, electroplating, machining and assembly technology are reduced. Meanwhile, the passive intermodulation waveguide flange disclosed by the invention has a wide working bandwidth, which can completely cover the corresponding waveguide working bandwidth, and can be applied to various high-power low intermodulation microwave components and test systems.

A flexible and twistable terahertz waveguide assembly has a flexible waveguide with waveguide flange connectors at its ends. The flexible waveguide comprises a segmented tube of a plurality of tube segments which are connected to each other. The tube encloses a dielectric waveguide which is held by means of threads (filaments) at the center of the tube. The individual segments are tiltable and / or pivotable against each other, allowing bending and twisting of the waveguide cable.

The invention discloses a waveguide filter, which relates to the technical field of wireless communication. The waveguide filter includes a first waveguide flange, a second waveguide flange and a slotted circular waveguide. A rectangular groove is formed on the side wall of the slotted circular waveguide, which facilitates metal plating on the inner surface of the structure of the slotted circularwaveguide during the machining process, and reduces the quality of the waveguide filter. A manufacture method of the waveguide filter is also disclosed. The waveguide filter structure is integrally printed by adopting a non-metallic material through a stereo photolithography 3-D printer and metal plating of the whole inner and outer surface of the waveguide filter is realized, which realizes precise machining without assembling and debugging, effectively improves the manufacturing efficiency.

The present invention pertains to a resonant cavity system, more specifically, a resonant system for measuring the dielectric constant of a sample and its method of use. The system and method provide for holding sample materials, which can be in solid, liquid, or powder form, and for reducing the size of the requisite cavity for measurement. The construction incorporates waveguide flange connectors to seal the electromagnetic cavity, which facilitates the measurement of low-loss materials. The design for signal input enables the use of standard calibration techniques and measurement.

The invention discloses a non-flange waveguide connecting structure, which comprises a male connecting part and a female connecting part, and is characterized in that the male connecting part comprises a first waveguide and a periodic metal convex body array, wherein the periodic metal convex body array is arranged on the peripheral surface of the outer wall of the tail end of the first waveguide,and a plurality of metal convex bodies are respectively and uniformly arranged according to a periodic layout rule; the female connecting part comprises a second waveguide and an expanded cavity structure; the expanded cavity structure is arranged at the tail end of the second waveguide, and the end, provided with the periodic metal convex body array, of the male connecting part is inserted intothe expanded cavity structure of the female connecting part to form the whole non-flange waveguide connecting structure. Compared with a traditional waveguide flange, the non-flange waveguide connection structure provided by the invention has the advantages that the size is greatly reduced, the structure layout is more facilitated, and more convenient and flexible assembly can be realized throughthe pluggable design.

Provided is a waveguide feeder. The waveguide feeder includes: a probe aligned at a center of a waveguide aperture at a metal wiring layer of a semiconductor substrate to input and output an electric signal; and an open stub located at a contact surface of a waveguide flange on a ground surface of a semiconductor chip in order to form a ground path of the probe on a surface of the waveguide flange.

The invention discloses a broadband rectangular waveguide microstrip converter. The converter comprises a rectangular waveguide, a waveguide flange plate, a PCB four-layer plate and a substrate integrated waveguide, wherein the waveguide flange plate comprises four mounting holes for fixing the rectangular waveguide on the PCB four-layer plate, and the PCB four-layer plate comprises four layers ofmetal floors, three microwave dielectric substrates and a microstrip circuit; the first metal floor and the second metal floor are provided with windows of the same size, metal patches of different sizes are arranged in the windows respectively, the windows correspond to the rectangular waveguide openings in position, a circle of metallized through holes are formed in the peripheries of the windows, and the third metal floor is provided with two gaps of different sizes; The substrate integrated waveguide is located on the third microwave dielectric substrate and used for a transition part between the rectangular waveguide and microstrip circuit signal transmission, and the designed rectangular waveguide microstrip converter has the advantages of being wide in frequency band and small in loss and has wide application prospects in the fields of millimeter wave radars and communication.

The invention relates to a stacked high-Q dual-mode filter based on a slot waveguide technology. The stacked high-Q dual-mode filter comprises a bottom metal plate, a middle metal plate and a top metal plate which are stacked and fixed up and down, and waveguide flanges are respectively fixed on the bottom metal plate and the top metal plate; a plurality of metal upright posts arranged in a surrounding manner are arranged on the bottom metal plate and the middle metal plate, and resonant cavities are formed by the metal upright posts which are arranged in a surrounding manner and the metal layer on the upper layer of the metal upright posts; an air gaps is formed between the metal upright post on each layer and the metal layer on the upper layer; the middle layer metal plate is provided with a slot which allows upper and lower resonant cavities to achieve electromagnetic energy coupling; the bottom metal plate and the top metal plate are both provided with elongated slots, and the waveguide flanges are provided with openings corresponding to the elongated slots. The stacked high-Q dual-mode filter achieves miniaturization of the filter through the stacked dual-mode design; the slotwaveguide technology is adopted for implementation, and the resonant cavity is filled with air, so that the high no-load quality factor is achieved.

A waveguide ring flange, a flexible waveguide assembly containing the waveguide ring flange and an assembly method of the flexible waveguide assembly relate to the technical field of waveguide transmission lines and aim at solving the problem that the heat radiation cannot be realized by a traditional flexible waveguide assembly due to the adoption of external cooling equipment. The waveguide ring flange comprises a first ring flange and a second ring flange, wherein a waveguide tube connecting surface is arranged on the inner wall of the first ring flange; the second ring flange consists of a waveguide tube fixing part and an outer jacket which are integrated and communicated with each other; the waveguide tube fixing part is provided with a groove matched with the first ring flange; and water injecting ports of which the output ends are communicated with an inner cavity of the fixing part are formed in the side wall of the fixing part. The flexible waveguide assembly comprises a waveguide tube, the outer jacket and two waveguide ring flanges; two ends of the waveguide tube are respectively connected to the ring flanges; two ends of the outer jacket are respectively connected to the two ring flanges; and the waveguide tube, the outer jacket and two water injecting ports form a cooling water channel. The assembly method comprises the steps of material falling, shaping, waveguide tube welding and outer jacket cold pressing. The waveguide ring flange, the flexible waveguide assembly containing the waveguide ring flange and the assembly method of the flexible waveguide tube assembly, disclosed by the invention, are mainly used in the fields of communication, satellite ground stations, microwave measurement and the like.

The invention discloses a double-load power sensor, which comprises a waveguide flange, two waveguide support arms and two wave absorbers, wherein two installation holes are formed in the waveguide flange, and one installation hole passes through the center of the waveguide flange; one end of each waveguide support arm is inserted in the corresponding installation hole, and the end surface of the other end of each waveguide support arm forms an inclined surface which inclines and extends relative to the axial direction of the waveguide flange; the two wave absorbers are arranged on the two inclined surfaces in one-to-one correspondence, one waveguide support arm (passing through the center of the waveguide flange) and the corresponding wave absorber form a working end, the other waveguide support arm and the corresponding wave absorber form a reference end, each wave absorber comprises a wave absorption layer, a first insulating layer, a circuit layer, a second insulating layer and a shielding layer which are arranged in a laminated manner, the wave absorption layers are in contact with the inclined surfaces, and each circuit layer is provided with a thermistor. The double-load power sensor provided by the embodiment of the invention has the advantages of good broadband matching property, good wave absorbing performance, small standing-wave ratio and good environmental adaptability.

The invention discloses a multi-chip integrated E-band transmitting module which comprises an upper metal base and a lower metal base. A medium-frequency low-pass filter circuit, a local oscillator circuit and an up-conversion circuit are respectively disposed in a cavity formed by the upper metal base and the lower metal base. A standard SMA (shape memory alloy) connector is arranged at a medium-frequency input end. A local oscillator input end is in a standard waveguide flange structure. A radiofrequency output end is in a standard waveguide flange structure. Signal coupling between a waveguide and a microstrip circuit in the module is achieved through a transition structure, and a low-loss substrate circuit and functional gallium arsenide chips are electrically connected by gold wire bonding. The multi-chip integrated E-band transmitting module based on multi-chip integration technology has the advantages of compact structure, high integrity, low cost, high uniformity and convenience in large-scale manufacturing.

The invention discloses a deformed ellipsoidal resonant cavity and a tuning-free dual-mode waveguide filter based on the same. The tuning-free dual-mode waveguide filter of the deformed ellipsoidal resonant cavity structurally comprises a first waveguide flange plate, a second waveguide flange plate and two dual-mode deformed ellipsoidal waveguide resonant cavities; the filter provided by the invention is improved on the basis of a dual-mode spherical resonant cavity filter. Based on the dual-mode spherical resonant cavity filter, the dual-mode resonant cavity is designed by utilizing a pair of polarization merger modes TM110 and TM011, sensitivity of processing error of the structure to dual-mode filter performance is reduced via the coupling and tuning structure, and a halfpace-shaped coupling structure is corrected into a hemispherical recess; the filter is easy to realize integrated processing, and subsequent debugging is not needed; in order to suppress stray generated by the other polarization merger mode TM101, four arc-shaped grooves which are symmetrical about the center of the ellipsoid are formed in the side wall of the dual-mode deformed ellipsoidal resonant cavity andused for suppressing a longitudinal TM101 mode in the deformed ellipsoidal resonant cavity, and therefore stray suppression of a stop band of the filter is achieved.

The invention discloses a microwave heating energy-feedback antenna and a manufacturing method thereof. The microwave heating energy-feedback antenna for connecting with a waveguide comprises a waveguide flange that is in connection with a port of the waveguide, and a resonance chamber integral in shape of a flat, wherein a layer of sealing mediums is filled into the resonance chamber body; a hole array for radiating microwave out of the resonance chamber is arranged on the wall of the resonance chamber, wherein the waveguide flange is placed on one corner of the resonance chamber; and a motivation angle between the waveguide and the resonance chamber is of 45 degrees. By the microwave heating energy-feedback antenna, the microwave can be transmitted at 45 degrees from the side to the flat shaped resonance chamber by the waveguide flange through the waveguide, and a TMmno mode standing wave is formed by the microwave in the layer of sealing mediums of the resonance chamber, and radiated from the hole array, as a result, the power output efficiency and the coupling efficiency of the microwave can be raised; the heating uniformity can be improved; and discharging can be restrained.

The invention relates to a terahertz soft waveguide tube based on a PTFE material and a forming method of the terahertz soft waveguide tubethereof. The forming method comprises the steps that throughelectromagnetic characteristic simulation analysis, a terahertz soft waveguide tube structure with a cavity made of PTFE serving as a medium is obtained through electromagnetic characteristic simulation analysis; according to the terahertz soft waveguide tube structure, frequency second laser cutting or CNC is adopted for machining according to the terahertz soft waveguide tube structure, and initial forming of the structure is achieved; coating a metal-plated layer is coated on the preliminarily formed structure by adopting a composite laser direct forming technology to obtain a metal-platedlayer structure; enveloping the outer layer of the metal-plated layer structure is enveloped to realize physical protection and obtain an enveloping structure; and connecting the metal layers at the two ends of the enveloping structure are connected with the waveguide flange plate, coating the reserved metal areas at the two ends of the structure are coated with a silver conductive medium adhesive, and realizing adhesion is realized through curing, thereby obtaining the terahertz soft waveguide tube. The forming method is suitable for a soft waveguide tube forming method for transmitting high-frequency electromagnetic signals in a narrow cavity, and is not limited to the rectangular section size and the length size.

The invention provides a structure-integrated circular polarization feed source. Circular polarization signal radiation is achieved through a structure-integrated design. The structure-integrated circular polarization feed source comprises an input waveguide as an input port of a microwave signal and a standard rectangular waveguide flange plate, an impedance conversion segment, a circular polarization segment and a horn radiator, wherein the impedance conversion segment is used for connecting the input waveguide and a circular waveguide of the circular polarization segment; a circular polarizer and an input electric field form an angular relationship of 45 degrees, so that an input linear polarization field is converted into a circular polarization field; and the horn radiator is used for transmitting a circular polarization signal into an external space. Therefore, circular polarization radiation is achieved by using the structure-integrated circular polarization feed source provided by the invention; various parts are of the structure-integrated design; the processing technology is easy to achieve; the reliability is high; and the structure-integrated circular polarization feed source can be used for mass production of array antenna feed source units.

The invention discloses a filter loading broadband three-gap coupling output cavity structure and relates to the microwave technology. The structure comprises cavities, a cavity cover, cavity sheets, a filtering diaphragm, an output cavity waveguide 1, an output cavity waveguide 2, an output waveguide segment and an output waveguide flange. The cavities and the cavity sheets form a clasp structure and a small-size coupling slot structure is formed. High intensity dispersion copper is taken as raw material. One cavity cover, two cavities, two cavity sheets, the output cavity waveguide 1 and the output cavity waveguide 2 share one central axis channel and an electronic beam passes through the channel. The output cavity waveguide 1, the output cavity waveguide 2, the filtering diaphragm and the output waveguide flange form an output segment. The cavity cover, cavities, the output cavity waveguide 1, the output cavity waveguide 2, the output waveguide segment and an output waveguide flange are fixedly connected with each other by using a circumscribed slot welding mode.

The invention discloses a V-waveband traveling-wave tube energy transmission structure, and belongs to the field of vacuum electron devices. The upper portion of the energy transmission structure is a cap-shaped waveguide flange beneficial to being matched in welding, a waveguide bottom with the bottom in a slope gradual-changed shape and a waveguide cover welded with the waveguide bottom are connected with the waveguide flange, and the lower portion of the waveguide bottom and the lower portion of the waveguide cover are connected with a rod-shaped energy transmission inner conductor and a tee-joint integrated converting head. A manufacturing method comprises the process steps of preliminarily determining the sizes of the parts of the waveguide energy transmission structure, establishing a three-dimensional energy transmission structure model, carrying out simulation and optimization, determining structure parameter sizes, processing and manufacturing all the parts of the energy transmission structure, carrying out deoiling and acid pickling on the parts, carrying out technology assembling on all parts, carrying out hydrogen furnace soldering on silver and copper solders, and measuring the reflected voltage standing wave ratio of the energy transmission structure. The method reduces the reflected voltage standing wave ratio of the energy transmission structure, is beneficial for improving the efficiency of a traveling-wave tube, and the reflected voltage standing wave ratio of the energy transmission structure in a 5GHz working bandwidth is reduced to be lower than 1.5.

The invention discloses a high power microwave radial line mode conversion slot antenna. The problems of being loose, limited power capacity and the like of a high power microwave antenna are solved.The antenna provided by the invention consists of a coaxial waveguide, a radial line leaky waveguide, a flange plate and a mode conversion lens. The radial line leaky waveguide is composed of a radialline bottom plate, a radial line middle plate, a short circuit cylinder, a slot array actinal surface and a waveguide wall. The slots of the slot array actinal surface are capsule-shaped slots whichare uniformly arranged in the circumferential direction. An annular protrusion step is added between adjacent slots to form a radiation branch. The mode conversion lens is composed of a first matchinglayer, a metal disc, a filling medium and a second matching layer. The metal disc is formed by combining mode conversion units arranged in the shape of a honeycomb. The mode conversion units are formed by punching inside a prismoid. According to the invention, the high power microwave radial line mode conversion slot antenna has the advantages of compact structure and high power capacity and gain; and the problem that the high power microwave antenna has limited power capacity and is difficultly used in a high frequency band is solved.

The invention discloses a substrate integrated waveguide filter with independently adjustable double bands. The substrate integrated waveguide filter comprises a resonant cavity and a perturbation body on the resonant cavity, wherein the resonant cavity comprises a ground plane, a dielectric plate, a top-layer surface and metal wall via holes; the top-layer surface and the ground plane are located at the upper part and the lower part of the dielectric plate; the metal wall via holes are distributed in the periphery of the resonant cavity in an array at equal distances to form a wall; the hole pitch between two metal wall via holes is smaller than or equal to 2.5 times of the diameter of each metal wall via hole; the perturbation body comprises a perturbation trough, perturbation metal via holes and connecting troughs; the perturbation trough is located at the center position of the top-layer surface of the resonant cavity; the connecting troughs are symmetrically arranged about the perturbation trough; the perturbation metal via holes in each resonant cavity are symmetrical about the perturbation trough and correspondingly located in the connecting troughs; and the numbers of the connecting troughs and the perturbation metal via holes are even numbers. The SIW filter with the independently adjustable double bands has the advantages of being simple in structure, relatively large in return loss, independently adjustable in double bands and simple in operation.