265 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 invention discloses a miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna, which comprises a substrate, wherein the upper surface of the substrate is provided with a first radiation sticker and a second radiation sticker; the first radiation sticker is positioned in the annular hollow of the second radiation sticker, and the first and second radiation stickers have the same center; the lower surface of the substrate is provided with a conductive grounding plate; a coaxial probe feeder vertically passes through the substrate; the upper end of the coaxial probe feeder is coupled with the first radiation sticker, and the lower end of the coaxial probe feeder is connected with a coaxial radio frequency joint; the coaxial probe feeder is directly connected with the first radiation sticker for electrical coupling; the second radiation sticker is electromagnetically coupled with the first radiation sticker; and the sidewall of the substrate is encased with electrodes which are connected with the conductive grounding plate to form back cavity electrodes. The gain of the dual-band dual-polarized microstrip antenna is increased, and the problem that the antenna gain and volume of the antenna are mutually restricted is solved by increasing the back cavity electrodes connected with the ground plane of the antenna on the premise of not increasing the volume of the dual-band antenna, and the thickness and sectional area of the substrate.

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.

Disclosed is a flow meter and method for measuring water cut and salinity of a multiphase mixture. The water-cut meter includes a conduit configured to receive the multiphase mixture, and a probe array configured to measure a cross-sectional area of the conduit. The probe array includes a plurality of coaxial probes connected in parallel. Optionally, the probe array is configured to operate at a single high frequency, for example, 1 to 3 GHz, to minimize conductivity loss relative to capacitance. The flow meter further includes a processor configured to transmit a signal to the probe array and to receive a reflected signal from the probe array using a single channel. The processor is further configured to calculate the water cut and the salinity of the multiphase mixture based on a single complex permittivity of the multiphase mixture calculated from the received reflected signal.

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 discloses a large K-waveband conformal antenna array plane and aims to provide a conformal phased array antenna array plane which does not generate a frequency deviation or a relatively high derotation component, and has a good broadband wide-angle scanning gain characteristics and good broadband wide-angle scanning circular polarization characteristics. The large K-waveband conformal antenna array plane is realized through the following technical scheme: conductor patches are divided into four groups and are arranged on an upper surface of a lower dielectric substrate in a form of a quadrant sequence rotation array, and projections of feeding points of a micro-strip patch antenna on a plane plate are arranged triangularly; the conductor patches are sandwiched between an upper dielectric substrate and the lower dielectric substrate; a radio frequency coaxial connector sequentially passes through the plane plate, a metal cone and the lower dielectric substrate to jointly form the micro-strip patch antenna; the radio frequency coaxial connector carries out coaxial probe feeding on the micro-strip patch antenna; and a pair of orthogonal polarization degenerate modes which have equal amplitudes and a phase difference of 90 degrees are excited on the conductor patches to form the conformal phased array antenna array plane for radiating right-handed circular polarization electromagnetic waves.

The invention discloses a high-isolation dual-polarization E-type microstrip antenna with a spurious wafer. The antenna has the advantages of high isolation, low cross polarization, small size and simple structure. The antenna adopts a double-layer E-type patch form; E-type patches are respectively printed on both upper and lower surfaces of an upper dielectric slab; slotting directions of the E-type patches are orthogonal; and two linear polarizations in the direction of plus and minus 45 degrees are respectively generated by coaxial probe feed. The high-isolation dual-polarization E-type microstrip antenna has the biggest innovations that two E-type patches are respectively printed on both the surfaces of the same dielectric slab; a conventional single-polarization E-type patch antenna is expanded to a dual-polarization E-type patch antenne; and the high isolation and the low cross polarization characteristic are obtained. Under the condition that the return loss is lower than minus 15dB, the bandwidth of 7.7 percent can be reached, the isolation is lower than minus 30dB, a directional diagram is stable, the cross polarization is good, and the gain is in the range of 6.8dBi-7.4dBi. The high-isolation dual-polarization E-type microstrip antenna can be applied to a micro mobile base station.

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.

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.

The invention provides a dual-band wearable antenna with switchable working modes, and belongs to the technical field of antennas. The adopted technical scheme is that the dual-band wearable antenna comprises upper and lower layers of dielectric substrates. A radiation patch is arranged at the upper surface of the upper layer substrate. A grounding plate is arranged at the lower surface of the lower layer substrate. The radiation patch and the grounding plate are connected by segmented metalized through holes. Symmetrically distributed rectangular grooves are arranged at the left and right sides of the metal radiation patch. The segmented metalized through holes are connected by a segment of conductor strip. The antenna adopts a coaxial probe for direct feed. A coaxial internal conductor extends to the radiation patch from the grounding plate. A circle of circular groove is etched around a feeding point so as to increase inductive reactance, and thus impedance matching is facilitated. Problems in the prior art that the wearable antenna cannot meet the requirements of people for miniaturization, integration and wearing facilitating are mainly solved by the dual-band wearable antenna with the switchable working modes.

The invention discloses a multi-mode reconfigurable orbital angular momentum antenna based on a uniform circular array, and relates to the technical field of wireless communication; the multi-mode reconfigurable orbital angular momentum antenna comprises a feed network, an antenna array, a feed probe and a coaxial probe, wherein the feed network comprises a first dielectric substrate, a micro-strip circuit printed on the upper surface of the feed network and a grounded metal plate printed on the lower surface of the feed network; the antenna array comprises a plurality of unit antennas arranged above the feed network, wherein the unit antennas are arranged in a uniform and circular mode; the coaxial probe is connected with the input end of the micro-strip circuit, and the feed probe is arranged between the antenna array and the feed network; the upper end of the feed probe penetrates through the first dielectric substrate and is connected with the input end of a feeder line; the lowerend of the feed probe penetrates through the second dielectric substrate and is connected with the output end of the micro-strip circuit, so that the multi-modal reconfigurable characteristic can be realized; and meanwhile, the problems that the adjusting precision is relatively low, and the switching speed between different modes is relatively low due to the existence of mechanical inertia in theprior art are solved.

A probe connector (1) connects a circuit board (2) and a coaxial plug (3) including an axial terminal (162) and a surrounding terminal (163). A coaxial probe (51) of the probe connector includes a center terminal (52) connected to the circuit board and the axial terminal; and an outer terminal (61) coaxial with the center terminal and connected to the circuit board and the surrounding terminal. The outer terminal includes an cylindrical outer conductor (62) surrounding the center terminal and mated with the surrounding terminal; an anchor (63) formed, as a projection (69), on part of an outer surface of the outer conductor by machining process so that a hole is formed on the part of the outer surface; and a conductive cover (91) covering and closing the hole and electrically conducted to the outer conductor. Thus, the position of the coaxial probe is slightly shifted even when the coaxial plug is inserted thereto or pulled therefrom.

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.

A probe connector (1) connects a circuit board (2) and a coaxial plug (3) including an axial terminal (162) and a surrounding terminal (163). A coaxial probe (51) of the probe connector includes a center terminal (52) connected to the circuit board and the axial terminal; and an outer terminal (61) coaxial with the center terminal and connected to the circuit board and the surrounding terminal. The outer terminal includes an cylindrical outer conductor (62) surrounding the center terminal and mated with the surrounding terminal; an anchor (63) formed, as a projection (69), on part of an outer surface of the outer conductor by machining process so that a hole is formed on the part of the outer surface; and a conductive cover (91) covering and closing the hole and electrically conducted to the outer conductor. Thus, the position of the coaxial probe is slightly shifted even when the coaxial plug is inserted thereto or pulled therefrom.

The invention provides an open-ended coaxial probe and connection cable for measuring a dielectric spectrum property of biological tissues, and a corresponding instrument calibration method according to high-precision and wide-broadband measurement requirements on the dielectric property of in-vitro or in-vivo biological active tissues which are soft, small in volume and irregular in appearance. The open-ended coaxial probe comprises an inner conductor and an outer conductor which are concentrically arranged; the ratio of the radius of the inner conductor to the radius of the outer conductor is 3: 10; polytetrafluoroethylene is filled between the inner conductor and the outer conductor and a plating layer is arranged on the surface of the outer conductor. The connection cable is mainly composed of an N-type connector and a coaxial cable. The probe is calibrated by utilizing a phase cancellation method and is used for measuring the dielectric property of the biological active tissues at 1-200 MHz. Meanwhile, in order to increase the reliability of measured data, a calibration box which is used with the open-ended coaxial probe is provided; and a method for measuring the dielectric property of the biological tissues can be carried out by using the open-ended coaxial probe.

The invention provides a back-cavity slot antenna array on the basis of SIW process and dielectric harmonic device structure. The back-cavity slot antenna array comprises a metal back cavity, two layers of dielectric substrates, an SIW feed network, a wired feed network and a plurality of dielectric harmonic device sets, the metal back cavity is of a cuboid structure, a plurality of rectangular section grooves which are identical and uniformly distributed in the surface of the metal back cavity, the SIW feed network is fixed on the lower surface of a cuboid, the dielectric substrates after being overlapped are fixed on one face, where the grooves are formed, of the metal back cavity, the wired feed network is sandwiched between the dielectric substrates and electrically connected with the SIW feed network through a coaxial probe, and each dielectric harmonic device set comprises two dielectric harmonic devices which are overlapped and fixed on the dielectric substrates. The back-cavity slot antenna array has the advantages of large bandwidth and high efficiency and can be widely applied in broadband radar systems.

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.