48 results about "Conical beam" patented technology

The invention discloses a large-size wafer thinning and polishing device and method based on a dynamic line beam, and the device comprises a dynamic beam generation module, a rotary bearing module and a closed-loop control module, and the dynamic beam generation module comprises a laser, a polaroid, a line beam shaping assembly, a reflector, a hollow conical lens and a lifting module. The linear beam shaping assembly is used for shaping a laser beam into a line-shaped linear beam, the hollow conical lens is a hollow conical lens with an open end face and is used for shaping the line-shaped linear beam into an arc-shaped linear beam, and the hollow conical lens is installed on the lifting module to generate a dynamic arc-shaped linear beam; the rotary bearing module is used for fixing and driving a wafer to rotate; and the closed-loop control module is used for controlling the lifting of the lifting module and the movement of the rotary bearing module. The polishing speed can be greatly increased, the polishing uniformity and the polishing quality are also improved, a plurality of wafers can be thinned and polished at the same time, and the polishing device can adapt to wafers of different sizes and shapes.

The invention relates to the technical field of image correction of computed tomography equipment, in particular to a cone beam computed tomography equipment correction method, and aims to solve the problems that geometric parameters projected by existing CBCT equipment are inaccurate, and a three-dimensional image subjected to three-dimensional reconstruction has obvious artifacts. In order to achieve the purpose, the method comprises the following steps: acquiring position coordinates of a marking substance in a phantom coordinate system and projection coordinates of the marking substance on a flat panel detector coordinate system when a conical ray originates from a plurality of positions; based on the position coordinates and the projection coordinates, calculating a projection matrix when the conical ray originates from a plurality of positions; calculating an average internal reference matrix of the plurality of internal reference matrixes based on the plurality of projection matrixes; determining a calculation projection coordinate corresponding to the position based on the average internal reference matrix and the position coordinate; and a nonlinear least square optimization algorithm is adopted to minimize the distance error between the projection coordinates and the calculated projection coordinates, and a calibration projection matrix is obtained. Random errors are suppressed by calculating an arithmetic average of the plurality of internal reference matrices.

The present invention discloses an industrial CT three-dimensional image reconstruction method based on data rearrangement and conjugate rays. The method of the present invention first obtains the projection data of the sample to be measured through circular orbit scanning of industrial cone-beam CT; then, the projection data is rearranged by converting the planar detector into a cylindrical detector, and four-neighbor bilinear interpolation is used to improve the accuracy of the projection data; then, the rearranged projection data is cosine weighted, and a three-dimensional empirical weighting function is constructed by a method based on conjugate rays for secondary weighting; then, the weighted projection data is filtered by a one-dimensional ramp filter, and the reconstruction result is obtained through back-projection. The present invention has strong robustness, can eliminate the reconstruction artifacts of projection data with a large cone angle, and thus improve the accuracy of industrial CT measurement.

The invention discloses an information encryption and reconstruction method based on a spiral cone light beam orbital angular momentum multi-dimensional holographic technology, and relates to the technical field of optical information processing and information encryption. The method comprises the following steps: discretizing a target image, generating an initial hologram through phase recovery, embedding a spiral cone phase represented by a topological charge l and a radial factor r0 in the hologram, and multiplexing different channels in an orbital angular momentum dimension and / or a spatial azimuth angle dimension, and finally, decryption and reconstruction are completed on the Fourier plane by using a spiral cone light beam conjugated with the encrypted phase. Due to the fact that spiral cone light beams corresponding to different channels are different in l, r0 and azimuth angles, more multiplexing channels with higher distinction degree can be constructed in the same optical aperture, and the problems that in the prior art, the information multiplexing dimension and capacity are limited, coupling interference exists between the channels, the system is complex, and confidentiality is insufficient are solved on the whole.

The embodiment of the invention provides a beam decomposition method for electromagnetic acceleration calculation of an electrically large-sized target, and the method comprises the steps: 1, obtaining a sampling data file, and converting the related parameter information when a read antenna pattern is represented by a uniform sampling grid into a data organization form capable of carrying out query processing; 2, performing uniform sampling on a spherical surface through a gold spiral method, and determining a sub-beam center; 3, limiting a Gaussian beam edge amplitude attenuation threshold value, calculating a beam variance as a limiting condition, and controlling the shape width of the Gaussian beam to be used; and 4, completing high-fidelity beam decomposition of the directional diagram by adopting local convolution, amplitude alignment and phase cloning operation, and ensuring that each sub-beam strictly inherits original field characteristics. According to the method, distributed parallel computing of a complex scattering problem is realized through a conical beam decomposition and region mapping mechanism, and the computing efficiency is remarkably improved while the computing precision is ensured.

The invention belongs to the technical field of microwaves, and particularly relates to a cosecant square beam forming circular polarizer and a design method. The cosecant square beamforming circular polarizer comprises a waveguide slot antenna array, a cosecant square beamforming metasurface and a polarization conversion metasurface which are concentrically and sequentially arranged from bottom to top along a central axis. According to the circular polarizer for cosecant square beam forming, a cosecant square reflecting surface in the prior art is removed, cosecant square beam forming and circular polarization processing are carried out at the same time, the integration level of the antenna is improved, the size of the antenna is reduced, and the machining difficulty is lowered. In addition, by replacing the dielectric substrate and the metal layer, other beam forming such as broadened beams and tapered beams can be realized, and the product expansion capability is improved.

The invention discloses a pulse neutron generation device for cutting steady-state neutron radiation and a pulse time measurement method. Comprising a steady-state neutron radiation source device, a shielding structure, a supporting frame, a collimator provided with a conical beam limiting diaphragm, a cutting sliding block made of neutron absorbing materials and internally provided with a penetrating beam limiting hole, a sliding block falling stabilizing device, a sliding block height adjusting device, a sliding block releasing device and a detector located on the emergent side. The cutting sliding block freely falls down along a vertical track limited by the falling stabilizing device after being released at a preset height, time cutting is carried out on a steady-state neutron beam passing through the collimator, a reference point is arranged on the supporting frame according to the pulse time measuring method, and a photoelectric probe A, a photoelectric probe B and a timer are arranged near a falling path; in the falling process of the cutting sliding block, the two photoelectric probes are sequentially shielded to trigger the timer to start / stop timing, and the time interval recorded by the timer is determined as the actual pulse width of pulsed neutron radiation.

The present invention relates to the field of laser beam synthesis technology, and in particular to a laser beam synthesis system, comprising: a rotating platform, a laser directional emission system, and a control system; the rotating platform is used to adjust the direction of the laser directional emission system; the laser directional emission system includes a phased array radar, a laser guidance device, and at least one beam array device; the phased array radar is used to detect and track targets; the laser guidance device measures the target distance and speed through laser echoes; the beam array device deflects the beam of the beam array device toward the system's central axis to form a conical beam; the control system drives the rotating platform based on target position information, so that the laser guidance device is aligned with the target, controls the beam array device to align with the target, and strikes the target. The advantage of the present invention is that the laser array adopts a ring array structure composed of multiple fiber lasers. This ring arrangement achieves large-scale integration and improves the total output power by increasing the number of fiber lasers.

The present invention discloses a K / Ka band dual-frequency conical beam antenna, comprising a high-frequency filtering and feeding module, a low-frequency power splitting and feeding module, and a nested horn module; the nested horn module comprises a circular waveguide horn and a coaxial horn nested outside the circular waveguide horn; the high-frequency filtering and feeding module is used to filter and perform mode conversion on input high-frequency electromagnetic energy, and output electromagnetic waves in a coaxial TEM mode; the electromagnetic waves in the coaxial TEM mode are used to excite the circular waveguide horn; the low-frequency power splitting and feeding module is used to perform power distribution on the input low-frequency electromagnetic energy, and output a plurality of electromagnetic waves with equal amplitude and phase; the plurality of electromagnetic waves with equal amplitude and phase are used to symmetrically excite the coaxial horn; the present invention can realize the radiation characteristics of a dual-band dual-conical beam, effectively improving the detection range of the antenna; the filtering function is integrated in the high-frequency filtering and feeding module, effectively improving the anti-interference capability of the antenna; and at the same time, it has high power capacity and radiation efficiency.

The present invention provides a method for obtaining a central orthographic projection image of a detection object, the method comprising: using a ray source to continuously scan a number of detection targets in the detection object to collect cone beam projection data under multiple fields of view covering the orthographic projection directions of all detection targets; rearranging the data of each cone beam projection data to obtain parallel beam projection data at different angles; performing orthographic projection detection on each detection target based on each parallel beam projection data to obtain the orthographic projection data of each detection target; and obtaining a central orthographic projection image of the detection object based on the orthographic projection data of each detection target. The present invention solves the problem that the central orthographic projection image obtained by the existing method has a cone angle effect and cannot simultaneously obtain the orthographic projections of each detection target.

The present invention discloses a method and system for tracking aggregate motion during concrete mixing based on monocular X-ray imaging. The system comprises: a single X-ray source that generates a cone beam of rays; a flat-panel detector located opposite the X-ray source; a tracer aggregate containing special markings; an image acquisition and processing unit; and a three-dimensional position and attitude calculation unit. The present invention reduces system costs: compared to binocular X-ray systems, the equipment required is halved, significantly reducing construction and maintenance costs. It also simplifies the system structure: a single X-ray source-detector combination reduces space requirements and installation complexity. It also achieves high-precision three-dimensional tracking: XY plane positioning accuracy can reach ±1mm, Z-axis positioning accuracy can reach ±2mm, and attitude calculation accuracy is controlled within ±5°.

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 relates to a single-layer wide-beam patch antenna unit and a wide-angle scanning phased array thereof, the patch antenna unit comprises a single-layer dielectric substrate, a radiator and the ground, the radiator is formed by symmetrically loading two pairs of L-shaped branches with grounding via holes in the center, a plurality of grounding via holes with top loading U-shaped strips and a pair of no-load U-shaped strips on the periphery of an E surface of a U-shaped groove patch. The L-shaped branch widens the E-plane wave beam by prolonging the current path, reducing the patch size and coupling and exciting the center grounding through hole; ten grounding via holes of the top loading U-shaped strip adopt a parallel equivalent inverted F structure, a complementary conical wave beam is introduced through resonance under the height of a single-layer substrate, and an E-plane wave beam is broadened; the no-load U-shaped strip enhances the vertical current of the ten grounding through holes and guides the surface wave, so that the half-power beam width of the E surface reaches 182 degrees. According to the 1 * n phased array composed of the units, decoupling rectangular ring grooves are etched in a printing place, mutual coupling lower than-16dB and 3dB wave beam scanning with the width of + / -76 degrees are achieved, and the 1 * n phased array has the remarkable advantages of being easy to machine, low in profile, low in mutual coupling and wide in scanning range.

The invention discloses a PGAI-NT analysis device and method based on an accelerator conical thermal neutron beam, and the device comprises an accelerator D-Be double-target graphite moderated body neutron source which employs a semicircular Be target design, a D ion beam generated by the accelerator bombards two semicircular Be targets to form two wide energy spectrum neutron sources, and parallel beam thermal neutrons are formed through a graphite moderated body; the neutron beam focusing equipment is used for converging the parallel beam thermal neutrons into conical beam thermal neutrons; the sample table is used for placing a tested sample, so that the conical beam thermal neutrons irradiate the sample; the line collimator is used for collimating gamma rays generated after the sample is irradiated by the conical beam thermal neutrons; the LaBr3 array detector is used for detecting the aligned gamma signal; and the imaging equipment is used for detecting and imaging the conical beam thermal neutrons penetrating through the sample.

The present disclosure relates to a collimator for an X-ray inspection system that is plate-shaped with a bottom side and a top side that is made of a material that is a good absorber of X-rays, with a collimator aperture, the collimator aperture having an inlet surface on the bottom side that has a first center of area and an outlet surface on the top side that has a second center of area. According to the present disclosure, either the collimator aperture, when installed in an X-ray laminography system, is not struck by a central beam of a cone beam emitted by an X-ray tube of this X-ray laminography system, or the first center of area and the second center of area form a collimation axis that forms a collimation angle with the normal of the surface of the collimator 1γ not equal to zero.

The invention provides a dual-imaging detection system and a switching method, and the system comprises a host which is provided with an accommodation cavity which is recessed inwards and is used for installing a transmission imaging system or a back scattering imaging system, and the bottom of the accommodation cavity is provided with a ray source beam outlet; the transmission imaging system is provided with a protection plate, a conical beam modulation structure and a conical protection structure arranged on the back surface of the protection plate, the conical beam modulation structure is embedded in a space formed by the protection plate and the conical protection structure, and the conical protection structure can be embedded into the accommodating cavity of the host; and the back scattering imaging system is provided with a back scattering detector, a chopping structure and a chopping protection structure arranged on the back surface of the back scattering detector, the chopping structure is embedded in a space formed by the back scattering detector and the chopping protection structure, and the chopping protection structure can be embedded into the accommodating cavity of the host. Through the modular design, the transmission / back scattering system can be interchanged for operation, the problem of single function of traditional equipment is solved, and the dual requirements for transmission / back scattering imaging detection in various narrow spaces are met.

The invention provides a method for automatically selecting and reconstructing a central layer, which comprises the following steps of: performing an automatic layer selection step on at least one plane of an x plane, a y plane and a z plane of a cone beam computed tomography system, namely performing rotary scanning on a measured object to obtain at least one original projection drawing, and obtaining a target projection drawing according to the original projection drawing; a preset number of target rows and columns are selected from a pixel point matrix of the target projection drawing, reconstruction rows and columns are obtained according to the target rows and columns and serve as reconstruction center layers of the corresponding planes, and the preset number is a natural number larger than or equal to 1. Through the method provided by the invention, the problem that in the prior art, only manual adjustment can be carried out, and the reconstruction center layer cannot be automatically selected is solved.

The application discloses a Ka-band conical beam antenna, which is composed of a single-layer metal floor, a coaxial probe, a single-layer dielectric substrate and an antenna patch array. The single-layer metal floor is rectangular, a metal through hole is arranged at the center of the floor, an SMA joint is arranged at the bottom of the floor, the SMA joint is in contact with the floor and is connected with the coaxial probe. The upper layer of the dielectric substrate is the antenna patch array. The whole antenna is composed of eight impedance-matched antenna patch units on the dielectric substrate to form a Chinese character-shaped pattern. Each patch unit is composed of a rectangular microstrip antenna, a parasitic capacitance ring, a transmission microstrip line and an impedance-matching microstrip line. The antenna is connected with a signal from the SMA joint through the coaxial probe penetrating through the single-layer dielectric substrate and the single-layer metal floor. The application can realize the design requirements of a wide beam, high gain and low side lobe.

The present application relates to the technical field of micro computer tomography, and discloses a large-aperture parabolic single glass tube micro-CT system and a reconstruction method thereof, the system comprising an X-ray source, a straight-through X-ray shutter, a first lens supported by a lens support to move, a sample supported by a sample stage and an X-ray flat panel detector arranged in sequence along an optical axis; the first lens is a large-aperture parabolic glass tube lens of millimeter level, and the lens support is used for adjusting the angle, pitch and optical axis coaxiality of the first lens; an electric control platform controller is electrically connected with the lens support and the sample stage respectively, and a main control computer controls the sample stage to perform angle scanning, sub-pixel angle jitter sampling and multi-view field splicing scanning through the electric control platform controller. The present application adopts a large-aperture parabolic glass tube lens of millimeter level, and the quasi-parallel beam geometry after system regulation and control enables the micro-CT system to be compatible with parallel beam algorithm, and the image reconstruction quality of the original cone beam algorithm is retained and improved.

The invention discloses an aggregate motion tracking method and system in a concrete mixing process based on monocular X-ray imaging, and the system comprises the following parts: a single X-ray source which generates a cone beam ray; the flat panel detector is positioned on the opposite side of the X-ray source; the tracing aggregate contains special mark points; an image acquisition and processing unit; a three-dimensional position and attitude resolving unit; the system cost is reduced: compared with a binocular X-ray system, the equipment demand is reduced by half, and the construction and maintenance cost is greatly reduced; the system structure is simplified; a single X-ray source-detector combination is adopted, so that the space requirement and the installation complexity are reduced; the positioning precision of an XY plane can reach + / -1mm, the positioning precision of a Z axis can reach + / -2mm, and the attitude calculation precision is controlled within + / -5 degrees.

The present invention relates to a medical assistance device (1) comprising: - a memory (3) arranged to receive pre-procedural image data from one or more areas of interest, - a tool (5) arranged to receive current image data from one or more areas of interest including at least one electromagnetic stimulation needle obtained by cone-beam computed tomography during a percutaneous ablation procedure based on electromagnetic fields, to perform registration of current image data and pre-procedural image data, and to return augmented cone-beam computed tomography image data, and - a simulator (7) arranged to receive augmented cone-beam computed tomography image data and electromagnetic stimulation parameters and to return electromagnetic field simulation data. [Fig. 1]

Disclosed herein is an apparatus comprising: a first radiation source (12) configured to generate a first divergent radiation beam (11) toward an object (50); a second radiation source (14) configured to generate a second divergent radiation beam (13) toward the object (50); and an image sensor (9000); wherein the object (50) is configured to rotate relative to the image sensor (9000), the first radiation source (12), and the second radiation source (14), and wherein the relative positions among the image sensor (9000), the first radiation source (12), and the second radiation source (14) are fixed.

The present invention relates to a collimator 1 for an X-ray inspection system, which is plate-shaped with a bottom side 14 and a top side 17, which is made of a material that absorbs X-rays well, and has a collimator opening 11, wherein the collimator opening 11 has an inlet surface 15 on the bottom side 14, which has a first centroid 16, and an outlet surface 18 on the top side 17, which has a second centroid 19. According to the invention, either the collimator opening 11, when installed in an X-ray laminography system, is not struck by a central beam 7 of a cone beam 6 emitted by an X-ray tube 4 of this X-ray laminography system, or the first centroid 16 and the second centroid 19 form a collimation axis 20, which encloses a collimation angle γ not equal to zero with the normal to the surface of the collimator 1. Furthermore, the invention relates to an X-ray laminography system with a collimator 1 according to the invention and to the use of a collimator 1 according to the invention in an X-ray laminography system for reducing the dose load for a test object 2 to be examined.

The invention discloses a light absorber for conical light beam shaping and a light absorption method, and solves the problems that the existing shaping mode of an optical fiber output light beam is limited through a proper through hole, so that generated miscellaneous light is uncontrollable and possibly becomes harmful light of an optical system. The device comprises a metal reflection circular truncated cone with the taper angle of 50-70 degrees and tubular absorption glass. The metal reflection circular truncated cone is arranged in the absorption glass, the end with the large outer diameter is connected with one end of the absorption glass in a sealed mode, an expansion channel which is gradually enlarged is formed in the metal reflection circular truncated cone in the light beam transmission direction, and the outer wall of the metal reflection circular truncated cone and the inner wall forming the expansion channel form a blade edge structure; the outer surface of the metal reflection circular truncated cone and the inner wall of the absorption glass form a reflection channel of the miscellaneous light, when the miscellaneous light enters the surface of the absorption glass, most of the miscellaneous light is absorbed, a small part of the miscellaneous light is reflected to the outer surface of the metal reflection circular truncated cone to be reflected again, and the miscellaneous light can be removed through multiple times of reflection and absorption.

The invention relates to the technical field of CT image reconstruction, and discloses a cone beam CT scanning image rapid reconstruction system and method based on deep learning, and the system comprises a dual-ray generation module, a scanning module, a deep learning reconstruction module, and a result output module. The dual-ray generation module comprises two ray generators, a beam outlet of one ray generator is provided with a 0.1 mm low atomic number material aluminum to filter an X-ray ultra-low energy part, and the other beam outlet is provided with a 0.1 mm high atomic number material copper to attenuate the X-ray low energy part. According to the method, the dual-energy-spectrum projection data is obtained through the dual-ray generator, the tissue linear attenuation coefficient is solved through fitting by taking PMMA and aluminum as base materials, background interference is corrected in combination with air reference data, the error of the reconstructed CT value in the soft tissue area is smaller than or equal to + / -10 HU, the error of the reconstructed CT value in the cortical bone area is smaller than or equal to + / -30 HU, and compared with traditional CBCT, the method is more accurate, and a reliable foundation is laid for preventing power ratio calculation.

The present invention discloses a low-profile broadband conical beam antenna, which includes a cylindrical metal back cavity, a circular copper sheet, four L-shaped copper sheets, a metal single cone, and an SMA coaxial probe. A frustum-shaped cavity is provided on the cylindrical metal back cavity, and the frustum-shaped cavity is coaxial with the cylindrical metal back cavity. The circular copper sheet is arranged in the frustum-shaped cavity, and the metal single cone is located in the frustum-shaped cavity. The metal single cone includes a first frustum, a second frustum, a cylindrical copper sheet, and four identical rectangular copper sheets. The first frustum, the second frustum, and the cylindrical copper sheet are arranged in sequence from bottom to top. The four rectangular copper sheets are evenly spaced around the cylindrical copper sheet in a circle. The four L-shaped copper sheets are located in the frustum-shaped cavity and are evenly spaced around the metal single cone in a circle. The SMA coaxial probe passes through the circular copper sheet and is fixedly connected to the lower bottom surface of the first frustum. The advantages are that while being able to generate a conical beam, it has a wide bandwidth, a low profile, and a high gain.

A four-frequency-band directional vehicle-mounted antenna comprises a metal floor, a dielectric substrate, a slotted radiation patch unit, a coaxial feeding structure and two T-shaped monopole branches. The slotted radiation patch unit is a circular patch, four L-shaped slots are formed on the circumferential edge of the circular patch, the L-shaped slots can change the current distribution of the high-order mode of the circular patch, reshape the irregular conical beam, and form a directional inclined double beam; meanwhile, the introduction of the L-shaped slots can increase the current path and thus reduce the resonance frequency of high frequency. The two T-shaped monopole branches are oppositely and equally spaced on the two sides of the slotted radiation patch unit, used to excite the equivalent magnetic current on the two end edges of the circular patch, and the equivalent magnetic current is symmetric about the center, thus forming a directional inclined double beam with higher gain value.

The invention discloses an aspherical lens with high coupling efficiency for shaping a 510nm-535nm laser light source and a light source coupling module, the aspherical lens sequentially comprises a front surface, a side surface and a rear surface from a light emitting end to a light receiving end, and the aspherical lens is used for shaping a laser light source with the wavelength of 510-535nm, the size of a light emitting surface of 2 mu m * 6 mu m and the light emitting surface of 510-535nm. Laser with the divergence angle Y direction being 22.5 degrees and the divergence angle X direction being 6.3 degrees of emergent light beams is converged into 9.0 mu m * 3 mu m light spots at a light receiving end 4.88 mm away from a light emitting end, the light spots are coupled with a single-mode optical fiber with the vertical aperture NA being 0.15, and conical light beams with the light emitting area being 9 mu m and the light emitting angle being 17 degrees are formed after the light beams are transmitted through the single-mode optical fiber. The light source coupling module comprises the aspheric lens, the optical axis of the aspheric lens, the light-emitting chip of the green laser tube and the fiber core of the single-mode optical fiber are aligned with the packaging line of the module, and one end of the green laser tube, one end of the aspheric lens and one end of the optical fiber are packaged in a packaging shell. According to the high-coupling-efficiency aspherical lens for 510-535 nm laser light source shaping and the light source coupling module, it can be guaranteed that light spots at the output end are circle center light spots, energy distribution is uniform, and brightness is uniform.

The present invention discloses a conical beam antenna based on a Fabry-Perot resonant cavity. The antenna comprises a first dielectric substrate, a second dielectric substrate, a first metal layer, a second metal layer, and a single-port feed. A first metal printed circuit is printed on the side of the first dielectric substrate facing the second dielectric substrate, and a second metal printed circuit is printed on the side of the second dielectric substrate facing the first dielectric substrate. An FP cavity is formed between the first and second metal printed circuits, and the first metal layer. The second metal layer is disposed on a side of the second dielectric substrate facing away from the second metal printed circuit. A metal E-shaped cavity is formed by partially removing the metal between the second metal layer and the second dielectric substrate. The single-port feed is disposed at the center of the bottom of the second dielectric substrate and passes through the metal E-shaped cavity and the second metal layer. The present invention utilizes peripheral feeding to achieve high gain, a simple structure, and ease of implementation.

The invention relates to the field of ultra-precision optical manufacturing, and provides an electromagnetic and permanent magnet combined gradient magnetic field regulated magnetorheological jet polishing head which comprises a supporting assembly, a servo motor, a sliding ring assembly, a permanent magnet assembly and a polishing assembly. The servo motor is arranged on the supporting assembly through a motor support, and the output end of the servo motor is connected with an input port of the rotating end of the hollow servo platform. The slip ring assembly comprises an electro-hydraulic slip ring, a hydro-electric slip ring supporting plate, a hollow servo platform connecting plate and a hollow servo platform. An electric slip ring of the electro-hydraulic slip ring is connected with the supporting assembly through the hydro-electric slip ring supporting plate, the hollow servo platform connecting plate and the center control servo platform. Through compact integration of the hollow servo platform and the electro-hydraulic slip ring, stable positioning of the tweezers-shaped magnet yoke structure, independent cooling layout of double coils, multi-layer isolation sealing and optimal design of a conical beam, the compactness, stability and liquid recovery efficiency of the device are remarkably improved, and modular disassembly and assembly are achieved through a quick connector.