57 results about "SMA connector" patented technology

The invention discloses an anti-interference array antenna of a satellite navigation receiver, which relates to the technical field of satellite navigation and comprises a radiation element, a ceramic substrate, an array element base and a metal bottom plate, a threaded hole is formed in the upper portion of the array element base, and a first slotted pan head screw is arranged in the threaded hole. The array element base is provided with a ceramic substrate and a radiation element through a slotted pan head screw I; the radiation element is positioned above the ceramic substrate; a central antenna array element is mounted at the central position of the top of the metal bottom plate, and a choke ring is arranged on the outer side of the central antenna array element; and an SMA connector is mounted below the slotted pan head screw I. Hardware-level mutual coupling suppression is realized by combining the multilayer microstrip antenna with the EBG choke ring and optimizing the arrangement of the antenna array elements, and by optimizing the hardware structure, the mutual coupling interference between the array elements is reduced from the source, the performance of the antenna is improved, and the interference positioning problem in an unknown mutual coupling environment is solved. Interference can be accurately and quickly positioned and suppressed, and the anti-interference capability of the antenna is improved.

The invention discloses a broadband circularly polarized radiator antenna based on slot gap waveguide, and relates to the technical field of waveguide slot antennae, the broadband circularly polarized radiator antenna based on slot gap waveguide is provided with a circularly polarized radiation slot structure, a slot gap waveguide transmission structure and a microstrip feed structure from top to bottom in sequence; the microstrip feed structure comprises a dielectric substrate and a radio frequency SMA connector, wherein the back surface of the dielectric substrate is coated with copper, and the front surface of the dielectric substrate is etched with a microstrip patch. The slot gap waveguide transmission structure adopts an all-metal slot gap waveguide structure, comprises periodically arranged metal pins and stepped metal ridges, and is used for transmitting electromagnetic waves; the circularly polarized radiation slot structure comprises dumbbell-shaped slots, orthogonal radiation slots and metal fins, and is used for realizing broadband circularly polarized wave radiation. The microstrip patch excitation is adopted to facilitate active high integration, and the broadband circular polarization performance, the out-of-band filtering characteristic and the good heat dissipation characteristic are achieved through the slot gap waveguide transmission structure design and the orthogonal radiation slot design.

The utility model discloses an independent stick-shaped antenna, which comprises an upper cover and a bottom shell which are connected through an ultrasonic welding line structure to form an antenna housing main body, the lower connecting seat is connected with the bottom shell through a pin and is used for supporting and fixing the antenna housing main body; the RP-SMA connector is assembled and connected with the lower connecting base, and an internal cable of the RP-SMA connector penetrates through holes reserved in the bottom of the bottom shell and the bottom of the lower connecting base so as to reach the interior of the antenna housing body; wherein the interior of the radome main body is used for placing a PCB (Printed Circuit Board), and the internal cable is used for being welded on the PCB, so that the PCB carries out antenna signal processing; it can be understood that according to the embodiment of the invention, the antenna housing is designed to be provided with the upper cover and the bottom shell which are detachable, and the upper cover and the bottom shell are connected through the ultrasonic welding technology, so that the installation difficulty of the PCB can be effectively reduced, and the antenna is more convenient and faster to produce, test and maintain.

The invention provides an S-band radio frequency signal transmitting port and a design and assembly method thereof, relates to the technical field of special equipment for radio frequency communication, and solves the problem of insufficient harmonic suppression caused by an infeasible shielding structure or a defect of a connection interface in the existing scheme. The transmitting port comprises a structural cavity, a printed circuit board and a plurality of SMA connectors, the printed circuit board is accommodated in the structural cavity, a transmitting circuit is arranged on the printed circuit board, and the structural cavity is used for providing radio frequency shielding for the printed circuit board; the SMA connectors are assembled on the outer surface of the structural cavity, and pins of the SMA connectors penetrate through the structural cavity and then are connected with the printed circuit board. The peripheral edge of the printed circuit board is provided with a non-solder-resist area with a preset width, and when the printed circuit board is accommodated in the structural cavity, the non-solder-resist area of the printed circuit board is in tight fit connection with the inner surface of the structural cavity. According to the invention, a closed shielding frame body is formed, so that higher harmonic radiation leakage is prevented.

This invention discloses a detachable electric field probe and calibration method for measuring the specific absorptivity of a vehicle-mounted human body model. The probe includes a metal dipole, a polytetrafluoroethylene (PTFE) ring, a waterproof metal casing, a ferrite magnetic ring, an SMA connector, and a detachable rubber sleeve. To prevent tissue fluid leakage, all components except the radiating element of the metal dipole are housed within the waterproof metal casing. The inner and outer conductors of the SMA connector connect to the upper and lower metal radiating elements, respectively. The ferrite magnetic ring is fitted onto the SMA connector, significantly improving the radiation pattern distortion problem of the electric field probe at low frequencies. The SMA connector connects to an RF receiver and a spectrum analyzer to acquire spectral information and the received power of the electric field probe, which, after calibration, reflects the magnitude of the field strength. This invention enables specific absorptivity measurement over a wide frequency range, featuring small size, low cost, and ease of use. It is suitable for specific absorptivity measurement in vehicle-mounted electromagnetic compatibility testing, medical device evaluation, and related scientific research fields.

The upper die casting structure of the SMA connector comprises an upper die casting, the upper die casting is connected with a lower die casting in a riveting mode, a plurality of vertical line protrusions are arranged on the outer wall face of the lower portion of the upper die casting in an annular array mode, and notches are formed in the middles of the vertical line protrusions. According to the upper die casting structure of the SMA connector, the plurality of vertical stripe protrusions are arranged on the upper die casting, and the corresponding notches are formed in the middles of the vertical stripe protrusions, so that vertical stripe interference points are only concentrated on the upper face and the lower face of the lower portion of the upper die casting, middle vertical stripes are omitted, the vertical stripe proportion of the upper die casting is reduced, it is guaranteed that the riveting force of the upper die casting and the lower die casting is stable, and the yield of the upper die casting is improved. And meanwhile, no cracking is ensured.

The utility model discloses a kind of SMA connector including first body, second body and third body, wherein, third body 45 ° is bent to form first part and second part, first body is screw-connected in the first part of third body, second body is screw-connected in the second part of third body, the inside after first body, second body and third body are connected to form medium passage;Medium passage is equipped with center conductor, the first end of center conductor is installed at first body close by through first insulating medium, the second end of center conductor is installed at second body close by through second insulating medium;The utility model can solve the problem that the angle of traditional SMA radio frequency connector joint is fixed, difficult to adjust direction, so it is often connected with half rigid wire in the mode of throwing wire, and half rigid wire is bent, but, manual bending can lead to angle inaccuracy or bending shape irregular, affect signal transmission performance.

The application discloses a high-speed flexible board connecting assembly, which comprises a flexible printed board, a standard SMA connector arranged at one end of the flexible printed board and used for connecting a vector network analyzer, and a gold finger structure arranged at the other end of the flexible printed board and used for being plugged into a standard VPX socket; the gold finger structure comprises a plurality of gold fingers, and the gold fingers are connected with the corresponding standard SMA connectors through the flexible printed board. Compared with the prior art, the high-speed flexible connecting assembly has the advantages of high speed (20 Gbps), low loss, low cost and good quality consistency, and can be flexibly used for building a VPX architecture test link.

The invention provides an ultra-low field magnetic resonance imaging integrated circular polarization radio frequency transmit-receive coil, and relates to the ultra-low field magnetic resonance imaging technology, the ultra-low field magnetic resonance imaging integrated circular polarization radio frequency transmit-receive coil comprises a medium substrate, split copper sheet ring structures and split straight copper sheet structures, the medium substrate is a cylindrical structure, the medium substrate is uniformly provided with multiple groups of split copper sheet ring structures, and the split straight copper sheet structures are arranged on the medium substrate. The split straight copper sheet structures are vertically and uniformly arranged on the split copper sheet ring structures, and feed ports are formed in the split copper sheet ring structures and connected with coaxial cables through SMA connectors. According to the invention, the transmitting and receiving of the circularly polarized magnetic field are realized through orthogonal feed and the adjustable element, the circularly polarized magnetic field can obviously improve the received signal strength and realize the effective improvement of the signal-to-noise ratio, the parameterized design is adopted, the flexible adaptation of multiple scenes is supported, and the antenna can be applied to different field strengths by adjusting the parameters of the adjustable capacitor, the adjustable resistor and the like. And the application scene is widened.

This invention relates to the field of flight technology, specifically to a flexible SMA (Surface Mount Microwave) non-destructive interconnection high-frequency small module test fixture and its usage method. The flexible SMA non-destructive interconnection high-frequency small module test fixture includes a base module, a power-on module, a slide module, and a push rod module. The usage method involves placing the device under test (DUT) in the test area, pushing the two slide modules to align the SMA connector with the signal pins at both ends of the DUT, continuously pushing the slide modules into place to complete the connection between the SMA connector and the signal pins at both ends of the DUT, and then applying a stop lever to the push rod module to apply a constraint force to the DUT against the base module and connect the power-on port of the DUT. Compared to existing designs, this invention employs a floating flexible docking scheme to achieve non-destructive interconnection between the SMA microwave RF connector and the signal pins of the DUT, simulating and replacing the rigid interconnection of the traditional mode. It uses elastic elements to flexibly constrain the DUT to the fixture, and a cam mechanism to achieve flexible constraint of the DUT while simultaneously completing the power-on connection.

The application discloses an SMA structure with a jumper frame and particularly relates to the technical field of SMA connectors, which comprises a frame body, the top end of the front face of the frame body is fixedly connected with a welding sheet, the top of the welding sheet is provided with a pin, the outside of the pin is provided with a fixing mechanism, the fixing mechanism comprises a bottom clamping block, the top end of the bottom clamping block is in contact with the bottom end of the back face of the pin, the top end of the back face of the pin is movably connected with a top clamping plate, the bottom end of one side of the top clamping plate is hingedly connected with an expansion sleeve, one side of the bottom of the expansion sleeve is fixedly connected with a clamping seat connecting plate, one end of the top clamping plate is fixedly connected with an angle plate, the inside of the angle plate is movably connected with a connecting bolt, the top of the connecting bolt movably sleeved with a compression spring, the pin and the frame body are fixed by the fixing mechanism, the dismounting work of the pin is facilitated, and in addition, the two sides of the pin can be uniformly stressed by the bottom clamping block, the top clamping plate and the L-shaped clamping plate, so that the stable signal transmission is ensured.

The invention discloses a low-profile high-gain filtering antenna based on a centrosymmetric parasitic patch structure, which belongs to the technical field of antennas for wireless communication and comprises a radiation network, an F4B dielectric plate and a metal floor which are sequentially arranged from top to bottom, the radiation network is located on the upper surface of the dielectric plate and is composed of a driving patch, two symbiotic patches connected with the driving patch and four parasitic patches which are distributed around the driving patch in a central symmetry mode. Two metal grounding poles are embedded in the dielectric plate, and two ends of the metal grounding poles are respectively connected with the radiation network and the metal floor; an inner conductor of the coaxial feed SMA connector penetrates through the metal floor and the dielectric plate and then is connected with the center diamond-shaped driving patch, and an outer conductor is connected with the metal floor. The filter is of a single-layer low-profile structure, does not need an additional filter circuit, and has the advantages of being simple in structure and easy to process and test.

The utility model provides an anti-loosening structure of an SMA connector. The anti-loosening structure comprises an SMA connector assembly, an anti-loosening piece and an anti-loosening piece, a cable assembly; the rotating mechanism is mounted on the surface of the SMA connector assembly; the elastic pressing assembly is installed on the surface of the SMA connector assembly, the locking assembly is installed on the top side of the elastic pressing assembly, and the locking assembly is installed on the surface of the elastic pressing assembly; and the locking plate is fixedly connected to the inner wall of the locking assembly. Under the action of the elastic pressing assembly, the anti-falling fixing effect of the limiting plate on the fixing cylinder is improved, the connection stability of the cable and the SMA connector is enhanced, stable signal transmission is guaranteed, and the connection of the cable and the SMA connector by external force is reduced.

The invention relates to the field of metamaterial antennas, and provides a directional radiation antenna structure with adjustable power, which aims at solving the problem that the existing beam control or directional diagram reconstruction method generally depends on a mechanical system, a phased array or a reconfigurable metasurface and lacks the capability of dynamically and continuously adjusting the radiation power of a directional antenna on the premise of not changing the beam shape. One end of the metal waveguide A fixes the SMA connector, and the other end is connected with the metal waveguide B; the metal waveguide B is of a cavity structure, an electric regulation and control structure is arranged in an inner cavity of the metal waveguide B. A plurality of openings distributed at equal intervals are formed in the outer side of the emergent face of the metal waveguide C. The resonance characteristic of the electric opening resonance ring is changed by changing capacitance of the variable capacitance diode. The metamaterial antenna with the near-zero dielectric constant can keep high directionality and a stable radiation pattern, and the radiation power of the metamaterial antenna with the near-zero dielectric constant can be remarkably enhanced.

The application discloses a kind of surface-mounted radio frequency relay test tool and its design method, including base, the surface of the base is equipped with installation area and joint installation site, printed board assembly, the printed board assembly is installed in the installation area on base, radio frequency joint, radio frequency joint is set on the joint installation site of base, SMA connector assembly, the SMA connector assembly is inserted in radio frequency joint, for being connected with external test instrument.This application, by the design method of optimization printed board, realize the integration of surface-mounted relay product radio frequency signal output and control signal input, and through the conversion of output interface, without welding can complete surface-mounted radio frequency relay and the connection of test system, completely avoid the damage caused to product in welding and disassembly process, to reduce product scrap rate, simultaneously without welding, also can greatly reduce single test time, improve test efficiency, to meet the full inspection demand of mass production.

A biconical antenna includes a dielectric corset having a first conical chamber defined therein and a second conical chamber defined therein opposite the first conical chamber. The dielectric corset further defines a passage from the second conical chamber to the first conical chamber. A first conical radiating structure is bonded within the first conical chamber of the dielectric corset. A second conical radiating structure is bonded within the second conical chamber of the dielectric corset. An SMA connector is connected to the second conical radiating structure and has a metal pin extending through the passage to electrically contact the first conical radiating structure and provide RF signals thereto.

The utility model belongs to the technical field of partial discharge insulation detection, and particularly discloses a novel anti-interference ultrahigh frequency partial discharge detection circuit, which comprises an antenna, a balun circuit and a band elimination filter, the antenna is used for receiving ultrahigh-frequency electromagnetic wave signals generated by partial discharge, the output end of the antenna is connected with the balun circuit, the output end of the balun circuit is connected with the band elimination filter, and the output end of the band elimination filter is integrated with an SMA connector and used for outputting the ultrahigh-frequency electromagnetic wave signals. According to the utility model, the Balun, the band elimination filter and the antenna are placed together, so that partial discharge signals can be effectively received and processed, external interference signals are suppressed, and accurate detection of partial discharge of electrical equipment is realized.

The utility model discloses a probe card structure used for filter chip testing, and specifically relates to the probe card manufacturing technology field, the probe card structure comprises a shielding needle body and a PCB board, the shielding needle body is installed on the PCB board, the shielding needle body comprises a tungsten steel needle, an insulating layer is arranged outside the tungsten steel needle, a metal outer layer is arranged outside the insulating layer, and the metal outer layer is arranged outside the shielding needle body. One end of the tungsten steel needle is connected with an SMA connector. According to the utility model, the inner conductor of the pin card is replaced by the tungsten steel pin, and the metal sheet is additionally arranged on the epoxy surface, so that the performance of the pin card is greatly improved, the strict requirement of a filter product on high test frequency is effectively met, the anti-interference capability is enhanced, and the accuracy and stability of test data are ensured; all parts and machining modes can be autonomously mastered, dependence on imported products can be avoided, and industrial safety and autonomy are greatly improved.

This invention belongs to the field of electrical parameter measurement and discloses a design, single calibration and measurement method for a radio frequency impedance measurement fixture. The design method includes: adopting a symmetrical structure, using a coaxial SMA connector as the port for connection with a vector network analyzer (VNA), using a coplanar waveguide as the connection line between the SMA connector and the device under test (DUT), and setting four surface mount pads on the coplanar waveguide to realize a radio frequency impedance measurement fixture for DUTs with different packages and different impedance ranges.

The utility model discloses a SMA connector with good waterproof performance applied in the field of radio frequency connector, including the connector main part, the inside installation of connector main part has the connecting rod, the inner wall sliding sleeve joint of connector main part has the connector, and the connector is inserted with the connecting rod, the utility model discloses a way that the trapezoidal groove is removed by moving slide cylinder, and the trapezoidal groove removes and makes the steel ball and the joint groove separate the joint, can reach the purpose of convenient assembly and disassembly, reduces the work load, has improved work efficiency, and the elasticity of first spring is changed by rotating the fixed ring, can adjust the pre -tightening force of first spring, guarantees the stability of connection, the utility model discloses a way that the sealing gasket is driven to the connector and is pressed tightly under the action of second spring by telescopic ring, can reach the purpose that the waterproof performance is good, has improved the service life, has guaranteed the stability of connection, and cooperates the rubber sealing ring, has further improved waterproof performance.

The application relates to a particle accelerator beam diagnosis technology, and aims to solve the problem that an existing calibration device cannot calibrate the response of a beam position detector to non-relativistic beams, and provides a calibration device for a beam position detector based on a helix, which comprises a mounting table, a two-dimensional translation table, an electric rotating table, a first through pipe, a second through pipe, a helix assembly and a fixing support; a to-be-measured beam position detector is coaxially connected between the first through pipe and the second through pipe; the helix assembly is coaxially arranged in an internal space formed by the first through pipe, the to-be-measured beam position detector and the second through pipe; the helix assembly comprises a metal cylindrical inner core and an insulating sleeve, a helix is wound on the insulating sleeve, flange type SMA connectors are arranged at two ends of the metal cylindrical inner core, and the inner cores of the two flange type SMA connectors are electrically connected with the helix; one end of the flange type SMA connector is connected with an external signal generator, and the other end of the flange type SMA connector is connected with a matching load.

The invention discloses an ultra-high frequency band low-interference antenna board and a preparation method thereof. The ultra-high frequency band low-interference antenna board comprises a PCB body, an antenna radiation unit integrally formed on the surface of the PCB body, and two coaxial SMA connectors fixedly arranged at preset positions of the PCB body. The PCB body comprises a first solder mask layer, a first copper foil, a first signal layer, a base material layer, a grounding layer, a second signal layer, a second copper foil and a second solder mask layer, the base material layer adopts an IT-150DA high-frequency special base material, the surface treatment is chemical nickel-gold plating, the thickness of the copper foil is 1oz, the two coaxial SMA connectors are respectively arranged at positions J1 and J2 of the PCB body, and the two coaxial SMA connectors are respectively connected with the grounding layer. The antenna radiation unit, the circuit of the PCB body and the grounding layer form an integrated impedance matching network, and the PCB body is also integrated with a spurious signal absorption module. According to the invention, multi-source interferences such as space radiation, in-board crosstalk and connection end invasion can be effectively blocked.

The present invention provides a thermal insulation composite piezoelectric ultrasonic transducer structure and its forming process, which belongs to the field of non-destructive testing. The thermal insulation composite piezoelectric ultrasonic transducer structure is composed of an SMA connector, a metal shielding layer, an epoxy resin encapsulation layer, a backing layer, a cavity, a matching layer, a piezoelectric ceramic chip, an inner thermal insulation and sound absorption layer, and an outer thermal insulation and sound absorption layer. The present invention aims to solve the problem of the influence of above-zero and below-zero ambient temperatures (such as ‑20℃‑40℃, etc.) on the performance of the piezoelectric ultrasonic transducer when the piezoelectric ultrasonic transducer is placed outside the concrete structure and the concrete structure is tested by being attached to the surface of the concrete structure or coupled with the air. The piezoelectric ultrasonic transducer has good signal accuracy and reliability when working at different temperatures, and the sensitivity difference of the transducer caused by temperature changes is reduced.

The invention discloses an insertion loss test fixture, which comprises an SMA connector, an insertion loss Kebang and at least one quick-release fixing piece, and is characterized in that the insertion loss Kebang is provided with at least one test area for arranging the SMA connector; the quick-release fixing piece is used for sleeving the SMA connector and fixing the SMA connector in the test area; at least one pair of quick-release structures used for being detachably connected with the two ends of the quick-release fixing piece is arranged on the insertion-loss Kongbang, and the two paired quick-release structures are distributed in the width direction of the insertion-loss Kongbang at intervals. According to the insertion loss test fixture, the SMA connector is fixed in the test area of the insertion loss Kebang through the quick-release fixing piece, and the two ends of the quick-release fixing piece are detachably connected with the quick-release structures on the insertion loss Kebang respectively, so that the mode that the SMA connector is fixed to the insertion loss Kebang in a screw mode is replaced, and the disassembly and assembly efficiency and the test efficiency of the SMA connector in the insertion loss Kebang are improved. The PCB can be widely applied to the technical field of PCBs.

The utility model discloses a universal FPGA data acquisition and processing platform, which is characterized by comprising an FPGA module, an optical fiber transmission module, a gigabit network module, a DDR3 dynamic data storage module, a Flash memory module, an LPC connector interface module, an HPC connector interface module, a universal SMA connector module and a high-precision system programmable clock module, wherein the HPC connector interface module provides a digital signal channel between the FPGA module and external equipment through an HPC connector; the HPC connector is connected with the FPGA module to generate 80 pairs of differential signals based on the LVDS level standard, the HPC connector is connected with the high-precision system programmable clock module to generate 4 pairs of programmable differential clock signals based on the LVDS level standard, and the HPC connector is connected with the two special GTX high-speed data transceivers in the FPGA module to form 16 pairs of GTX high-speed data transceiving links.

The invention discloses an automobile tail door radio station antenna fixing assembly, belongs to the technical field of automobile electronic equipment installation, and aims to solve the problems that an existing vehicle-mounted radio station antenna damages an automobile body structure during installation, is not firm in fixation, cannot be adjusted in angle and is difficult to disassemble in emergency. The assembly comprises an antenna assembly, a vertical connection assembly, a horizontal connection assembly and a feeder line assembly. The antenna assembly comprises an antenna and an antenna sealing ring, the feeder line assembly comprises an upper fixing nut, a lower fixing nut, a tobacco pipe M head, an SMA connector and a sealing piece, the upper fixing nut and the lower fixing nut are connected with the vertical connecting assembly, and the vertical connecting assembly achieves 180-degree adjustment of the vertical face through a fixing bolt. The damping piece can enhance the damping effect and the connecting strength, and the inclined plane connecting piece improves the attaching stability with the horizontal connecting assembly through the inclined plane design; the horizontal connecting assembly comprises a connecting bolt, a pressing piece, a semicircular connecting piece, an automobile body fixing piece and a horizontal rotating piece, the automobile body fixing piece is connected with the tail door through an original automobile bolt (the original automobile structure is not damaged), the semicircular connecting piece and the automobile body fixing piece are connected in a semicircular mode to enhance reliability, and the horizontal rotating piece and the automobile body fixing piece are matched to achieve 360-degree adjustment of the horizontal plane; the M head of the tobacco pipe can be connected with radio station antennas of various lengths to adapt to different signal coverage requirements, and the SMA connector supports quick disassembly and assembly to adapt to emergency scenes. The device does not need to change the original vehicle structure, is firm in fixation, adjustable in angle, emergency and convenient, and is suitable for installation of tail door radio antennas of various vehicle types.

The invention discloses a compact broadband circularly polarized magnetoelectric dipole array antenna applied to millimeter wave communication, which comprises an upper layer dielectric plate and a lower layer dielectric plate which are connected through plastic screws, a metal radiation patch is adhered to the upper surface of the upper layer dielectric plate, a metal ground layer is arranged on the upper surface of the lower layer dielectric plate, a coupling gap is etched in the metal ground layer, and the coupling gap is communicated with the metal radiation patch. The bottom surface of the metal ground layer is provided with a U-shaped micro-strip feeder line, the terminal of the micro-strip feeder line is connected with a 50-ohm SMA connector, and the SMA connector is connected to the side edge of the lower dielectric plate. Parasitic patches are added during unit design, the working bandwidth of the antenna is improved, a sequential rotation method is used during 4 * 4 array forming, the lengths of feeder lines between feed networks are sequentially different, the 90-degree phase difference is generated between array elements, the necessary condition for forming circular polarization is generated, and the circular polarization characteristic of the whole antenna is greatly improved.

The utility model provides an oscilloscope probe-to-coaxial SMA joint structure, which comprises a sleeve conductor and an SMA joint, and is characterized in that the sleeve conductor comprises an outer conductor, an inner conductor and a dielectric medium, and the dielectric medium is filled between the inner conductor and the outer conductor; the SMA connector is fixed to the end of the sleeve conductor, and the end, close to the sleeve conductor, of the SMA connector is inserted into the inner conductor. The inner conductor is arranged in the outer conductor, the interval is arranged between the inner conductor and the outer conductor, and the dielectric is filled in the interval, so that an inner conductor and an outer conductor are arranged on the sleeve conductor, and the inner conductor and the outer conductor are independent from each other due to the fact that the dielectric is arranged between the outer conductor and the inner conductor. Due to the fact that the outer conductor, the inner conductor and the dielectric medium between the outer conductor and the inner conductor are coaxial to form the double-conductor transmission line, the outer conductor is grounded, and an electromagnetic field is limited between the outer conductor and the inner conductor, the sleeve conductor basically has no radiation loss, and the oscilloscope probe is hardly interfered by external signals.

This utility model discloses an aviation connector clamp, including two quick-release wrenches and two SMA cluster connectors. Each of the quick-release wrenches has a first operating end and a second operating end. The first operating end is arc-shaped with a protrusion, adaptable to the groove on the side wall of the SMA cluster connector. The second operating end is a locking block with a slot, which is either toothed or polygonal, adaptable to a single SMA connector. The SMA cluster connectors are male and female; the male connector has a protruding ring and a locking post, while the female connector has a receiving groove and a limiting port. During mating, precise locking is achieved through the cooperation of the protrusion and groove, and the locking post and limiting port. Multiple SMA connectors on the integrated board correspond one-to-one. This clamp can operate both single and clustered SMA connectors simultaneously, improving operational efficiency and connection stability, and is suitable for connection operations in the aviation connector field.

The invention discloses a double-ridge feed source and a forming method thereof. A high-performance feed source structure is realized through split processing and precise assembly. The method comprises the following steps of: machining half characteristics of a horn cavity and a waveguide cavity of a side plate; linearly cutting the ridge plate and polishing; the side plates and the ridge plates are assembled, and the ridge spacing error is controlled; forming a cavity by adopting silver brazing; processing external features and installing an SMA connector; after the wave-transparent cover is blackened, sealant is poured, and alcohol stands to detect the sealing performance; after the matching block is adjusted, tin soldering, epoxy glue sealing, ventilation and pressure maintaining are conducted, and assembling is completed. The double-ridge feed source structure comprises a left side plate, a right side plate, an upper ridge plate, a lower ridge plate, a matching block, an SMA connector and the like. Through split type design and precise assembly, resonance and sidelobe rising are effectively avoided, and the sealing performance and the signal transmission stability are improved.