264 results about "Coaxial probe" patented technology

This invention relates to gas insulation combination electric apparatus partial discharge online detecting and position equipment and its position method. It belongs to electric equipment insulation detecting technique field. This invention includes sensor array consisted by microtrip patch antenna, two groups multiple intelligence selecting switch; two amplify filter, high speed digital collector, computer and control module. The array in this invention is made up by the microtrip patch antennas fixed at GIS basin type insulator, its antenna is made up by rectangular metal patch, medium board, metal platter, coaxial probe type feed line and antenna shielding case. This invention is computer program control, it can online, actual time, quickly, actually poison of GIS inner discharging. This invention can be widely used to electric generator plant booster station and electric network GIS electric substation, it can auto detecting GIS inner partial discharge, and actually poison of partial discharging defect, also it can interconnection run with electric substation and electric generator plant auto monitoring system.

The present invention is directed to structures having a plurality of discrete insulated elongated electrical conductors projecting from a support surface which are useful as probes for testing of electrical interconnections to electronic devices, such as integrated circuit devices and other electronic components and particularly for testing of integrated circuit devices with rigid interconnection pads and multi-chip module packages with high density interconnection pads and the apparatus for use thereof and to methods of fabrication thereof. Coaxial probe structures are fabricated by the methods described providing a high density coaxial probe.

The invention relates to a center-feed ridge waveguide slot antenna. According to the center-feed ridge waveguide slot antenna, a slot array is formed on a ridged face of a ridge waveguide in a manner that two sides of a ridge are slotted in a staggering manner, and metallic tuning blocks are placed at the other side of the ridge opposite to slots, clung to the metallic ridge and a face of the waveguide, and used for adjusting the equivalent admittance of the radiation slots, so that the equivalent susceptance of the radiation slots is enabled to be zero, and the radiation slots are enabled to be in a resonant state; and the excitation of the waveguide adopts a center feeding manner so as to broaden bandwidth, and an excitation position is located on an un-ridged face of the ridge waveguide, so that conventional waveguide feeding manners, such as a coaxial probe bottom feeding manner, a waveguide center inclined slot back feeding manner and the like, can be adopted. According to the center-feed ridge waveguide slot antenna provided by the invention, a new form for a waveguide slot antenna is provided, and the low side-lobe can be realized; and the structure is compact, the feeding manner is simple, and the production is easy, so that the center-feed ridge waveguide slot antenna can serve as an arraying unit of a phased array antenna.

The invention discloses a monolithic integration technology based terahertz frequency mixing circuit. The monolithic integration technology based terahertz frequency mixing circuit comprises a radio frequency 3dB branch waveguide directional coupler, a local oscillation 135-degree phase shift 3dB branch waveguide directional coupler, a coaxial probe, an intermediate coupling ring, an intermediate frequency signal and two terahertz sub-harmonic mixers; each terahertz sub-harmonic mixer comprises radio frequency waveguide-microstrip transition, a monolithic integration Schottky diode pair, a local oscillation waveguide-microstrip transition, an intermediate frequency filter and a local oscillation low-pass filter; and the monolithic integration Schottky diode pair is a diode pair in inverse parallel connection. The harmonic mixers in the erahertz frequency mixing circuit are obtained by adopting a semiconductor technology; the position of diodes and the size of a micro-strip circuit can be controlled precisely; the error is far less than that of manual configuration; the influence from the configuration error to the performance of the frequency mixing circuit is reduced greatly; meanwhile, the frequency mixing circuit can remove local oscillation noise efficiently and improves the noise performance and the efficiency of a system.

The invention discloses a radial linear power divider/synthesizer which comprises a coaxial probe, a radial waveguide cavity and a plurality of paths of stepped waveguides, wherein the coaxial probe is inserted into the central position of the radial waveguide cavity; the radial waveguide cavity is connected with the plurality of paths of stepped waveguides; each path of stepped waveguide is composed of at least one transitional rectangular waveguide and a standard rectangular waveguide; the standard rectangular waveguide is connected with the radial waveguide cavity through the transitional rectangular waveguide; and the transitional rectangular waveguide is wider than the standard rectangular waveguide. Two such radial linear power divider/synthesizers can be assembled in a back-to-back way to form a power amplifier. The radial linear power divider/synthesizer disclosed by the invention is broadened in the work bandwidth in a manner that at least one transitional rectangular waveguide is added.

The invention relates to a single-point coaxial feeding low-profile cavity-backed circularly polarized antenna. Ordinary cavity-backed circularly polarized antennas have complex structures, large volumes, and high manufacturing costs. In the invention, metal layers are plated on both sides of the dielectric substrate, and the upper metal layer is etched with two mutually perpendicular rectangular slits for radiating energy. Through the upper metal layer, the dielectric substrate and the lower metal layer, a plurality of metallized through holes arranged in a circle are opened to form a circular cavity. At the appropriate position of the angle bisector of two mutually perpendicular elongated radiation slots in the cavity area, a coaxial probe is connected through the lower metal layer and the dielectric substrate as a feed structure. Compared with the existing cavity-backed circularly polarized antenna composed of a metal cavity, the cavity of the present invention is manufactured by common PCB technology, so that the antenna has a small profile and low manufacturing cost.

The invention discloses one kind coaxial multi-point bar, including insulation shell. Its characteristics of insulation shell are described with extendable metal axis probe, and a coaxial probe around flexible metal probe mentioned at least, the probes are insulating each other. The extendable metal probe and installed coaxial probe of the invention can detect objects together, and realize the two-point measurement and lots -point measurement at the same time. Lead with gauges measuring internal circuit to eliminate the resistance measurement error, and ensure accuracy. Meanwhile, the metal coaxial probe section is large and can be more current. So, it can be applied to solve the limitations of measurement occasions, and can be applied many signal measurements, especially large current signal measurements.

The invention belongs to the technical field of wireless communication, and discloses a SIW ring slot antenna generating dual-mode OAM vortex electromagnetic waves. The cross section of the SIW ring slot antenna is a circular cross section, and the center of circle is O. The SIW ring slot antenna is composed of an upper metal surface, an intermediate dielectric substrate and a lower metal surface.The SIW ring slot antenna is provided with multiple metalized through holes, a ring radiation slot and three feed coaxial probes which are arranged from outside to inside in turn. Multiple metalizedthrough holes are uniformly arranged along the circumference. The ring radiation slot is etched on the upper metal surface. The three feed coaxial probes are three solid metal columns which are uniformly distributed in the internal side of the ring radiation slot along the circumferential direction. According to the SIW ring slot antenna, the design of the complex feed network can be avoided, thesize of the antenna can be reduced and the compactness and the degree of integration of the antenna can be enhanced.

The invention provides a high-isolation radial power synthesis amplifier with broadband air micro-strips, which comprises a high-isolation radial power divider/synthesizer with broadband air micro-strips and at least one power amplifier module. The high-isolation radial power divider/synthesizer with the broadband air micro-strips comprises an input waveguide, a coaxial transition structure, a radial waveguide, the radial air micro-strips and at least one output waveguide, wherein the coaxial transition structure is arranged between the input waveguide and the radial waveguide, the center of the radial waveguide is connected with the input waveguide through the coaxial probe transition structure, the air micro-strips in radial distribution are connected to the periphery of the radial waveguide, a film resistor disc is pasted between each two adjacent air micro-strips, and each air micro-strip is connected with one output waveguide. The high-isolation radial power synthesis amplifier with the broadband air micro-strips can realize high-efficiency broadband power synthesis with one-division multiplexing and in single-mode operation.

The invention discloses a method for quickly detecting the fat content of bovine milk based on a dielectric spectrum technique. According to the method for quickly detecting the fat content of the bovine milk based on the dielectric spectrum technique, dielectric spectrums (relative dielectric constant spectrums and dielectric loss factor spectrums), in certain one radio-frequency/microwave range of one batch of bovine milk samples are obtained by utilizing a network analyzer (or an impedance analyzer) and a coaxial probe; characteristic dielectric variables which express the fat content of the bovine mink are extracted from the dielectric spectrums; linear or nonlinear detection models for detecting the fat content of the bovine milk are established based on the dielectric spectrums in the whole radio-frequency/microwave range or the extracted characteristic dielectric variables; the models are inspected; the model of which the prediction-set root-mean-square error is minimal is used as an optimal model for detecting the fat content of the bovine milk. The dielectric spectrum of a bovine milk sample of which the fat content is unknown is measured; the numerical values of the characteristic dielectric variables are substituted into the optimal model, so that the fat content of the sample can be calculated. The method for quickly detecting the fat content of the bovine milk based on the dielectric spectrum technique has the advantages that the detection is convenient and quick, the operation is simple, the precision is high, and the on-line and real-time detection can be realized.

The invention relates to an ultra-wide-band dielectric-loaded four-ridge horn feed source. The feed source is a dielectric-loaded wide-band dual-polarized circular-opening four-ridge horn, with a working frequency band of 0.6-4GHz, and applied to a radio telescope ultra-wide-band receiver system. The feed source consists of a four-ridge horn, a four-ridge circular waveguide, ridge film sheets, a dielectric rod, a metal outer edge, a first coaxial probe, a second coaxial probe and a dielectric ring. By adding the ridge film sheets to the circular waveguide, the working bandwidth of the four-ridge circular waveguide is far higher than that of the circular waveguide; then the four-ridge waveguide is made into the four-ridge horn so as to realize the ultra-wide-band and dual-polarized functions and the like; by loading the dielectric rod, the high-frequency gain can be lowered, and by loading the metal outer edge, the low-frequency gain can be improved, so that gain consistency in the working frequency band can be realized; by loading the dielectric ring and changing the cross section of the ridges, the equalization radiation property of a directional diagram can be adjusted; the feed source directional diagram is relatively high in equalization; and an actually measured result is basically identical to a simulation result, so that radio astro observation requirement can be satisfied.

A coaxial probe is revealed. A protective sleeve is mounted in a sleeve port of a main sleeve. A leaning flange projecting inward is formed on a bottom end of a sleeve port of the main sleeve. The leaning flange is stopped and positioned by a stopping flange on an upper part of the protective sleeve. A probe is disposed on a sleeve port of the main sleeve and is passed through a sleeve port of a protective hole. Thus the probe is hidden in the protective sleeve. After the protective sleeve being in contact with a coaxial connector to be detected, the probe is moved to project from the protective sleeve for detecting the coaxial connector. Thereby damages of the probe caused by impact force received can be avoided.

Methods and devices for measuring fluid properties include an electromagnetic sensor. The electromagnetic sensor includes a coaxial probe body having a first integral pressure barrier and a second integral pressure barrier formed from coaxial-feedthrough connector. The first integral pressure barrier and the second integral pressure barrier have a desired characteristic impedance.

The invention discloses a dual-linear polarization and dual-circular polarization four-port reconfigurable dielectric resonant antenna, and belongs to the field of wireless communication. The antennasequentially comprises a circular dielectric block, two layers of dielectric blocks, a dielectric feed plate, a dielectric substrate, a coaxial probe and a bottom feed network from top to bottom. Thelower part of the circular dielectric block is fixed with the dielectric substrate through a dielectric feed plate, and a coaxial probe passes through a through hole at the fixed connection part. Thetwo layers of dielectric blocks are fixed in the center of the dielectric substrate, and a gap is reserved in the center of the dielectric substrate. Bottom feed networks are distributed on the lowersurface of the dielectric substrate, and each corner is provided with a port. The circular dielectric block is connected with a bottom feed network through a coaxial probe and correspondingly connected with a first port and a fourth port, linear polarization is excited, and the feed ports are switched to achieve reconfiguration in the horizontal polarization direction and the vertical polarizationdirection. And the two layers of dielectric blocks are coupled with the bottom feed network through gaps, are correspondingly connected with the second port and the third port, excite circular polarization, and switch the feed ports to realize reconfigurable left-handed and right-handed circular polarization. According to the invention, various reconfigurable configurations are realized.

The invention discloses a rectangular microstrip antenna working in a higher-order mode in mobile applications, belongs to the technical field of wireless communication, and aims to provide a method for producing an omni-directional conical beam pattern (OCBP) by utilizing a mode TM02 and a mode TM20 of the rectangular microstrip antenna. The rectangular microstrip antenna comprises a cylindrical medium substrate, an irradiator arranged on the front face of the medium substrate, an earth plate arranged on the back face of the medium substrate and two coaxial probes carrying out feed on the antenna. The rectangular microstrip antenna appropriately selects the mode TM02 or the mode TM20 through dual-port equiamplitude in-phase current excitation and annular gaps, and achieves high isolation and good impedance matching for the two ports. The rectangular microstrip antenna working in the higher-order mode in the mobile applications guarantees a simple antenna form and a simple feed structure while achieving expected targets, and has quite high use value and broad application prospects.

The invention relates to a broadband and reconfigurable OAM antenna. The antenna comprises metal spiral arms (1), a dielectric substrate (2), coaxial probes (3) and a floor (4). The metal spiral arms are arranged on the upper surface of the dielectric substrate, the spiral direction of the metal spiral arms is opposite to the rotation direction of an OAM beam wave finally generated by the antenna, and the quantity of the metal spiral arms can be flexibly set according to needs; the coaxial probes are used for feeding the metal spiral arms, the number of the coaxial probes are equivalent to that of the spiral arms, and the multiple coaxial probes are loaded with uniform-amplitude and in-phase feed signals; and the floor is arranged on the lower surface of the dielectric plate, and the radius of the floor is far smaller than that of the dielectric substrate. The antenna is simple in structure and easy to implement, has broadband operation and pattern reconfiguring capability, and can be expected to be applied to an OAM wireless communication technology, thereby improving spectrum effectiveness and system capacity of the wireless communication system.

The invention provides a coaxial probe for wafer probe cards and a spider using the same, wherein the coaxial probe for wafer probe cards comprises a tungsten or tungsten alloy probe body, one or more insulating layers and a metal conducting layer; the tungsten or tungsten alloy probe body is provided with a first end and a second end, wherein the first end is inclined relative to the probe body and provided with a tip; the insulating layers are deposited on one area of the probe body, wherein the area does not cover the tip of the first end and the second end; and the metal conducting layer is deposited on at least one part of the insulating layers. By means of the invention, the noise produced by the capacitive and inductive coupling between the probes can be shielded, the stability of a test is guaranteed when the test is carried out, and short-circuiting is prevented.