29 results about "SMA connector" patented technology

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.

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 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 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 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.

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 application discloses a radio frequency receiving front-end circuit with a shielding cavity and relates to the technical field of radio. The radio frequency receiving front-end circuit comprises a signal processing link, a power supply processing module, a shielding cavity and an interface assembly. The signal processing link and the power supply processing module are integrated on a PCB board. A middle cavity in the shielding cavity is internally provided with a positioning column and a threaded mounting hole for fixing the PCB board. The PCB board is clamped between the middle cavity and a lower cover plate through a cover plate screw. An SMA interface in the interface assembly is connected with a T1 radio frequency amplifier in the signal processing link in input mode. An SMA connector in the interface assembly is connected with a second intermediate frequency filter in the signal processing link in output mode. A U1 first mixer in the signal processing link is connected with an LO1 first local oscillator SMA connector in cooperation. The radio frequency receiving front-end circuit with the shielding cavity has excellent shielding performance, guarantees high-frequency signal integrity and realizes uniform heat dissipation.

The invention discloses a single-energy neutron fluence rate absolute measurement device based on a 6LiF telescope system, and belongs to the technical field of neutron detection, the single-energy neutron fluence rate absolute measurement device comprises a cylinder, a collimation diaphragm is arranged in the cylinder, the collimation diaphragm comprises a first center hole and a second center hole, the first center hole and the second center hole are coaxially arranged and have the same diameter, and the first center hole is communicated with the second center hole. A first center hole is formed in one end of the cylinder, a composite layered neutron conversion body is mounted at the first center hole and comprises an aluminum substrate, a 6LiF active layer is evaporated on the upper surface of the aluminum substrate, a passivation ion implantation planar silicon detector is arranged behind a second center hole and is provided with an SMA connector, and a rear cover is arranged at the other end of the cylinder. The center of the rear cover is provided with a BNC female base leading-out signal line. Based on the structural design of the invention, the absolute measurement of the single-energy neutron fluence rate in the energy region from 1 keV to 100 keV can be realized. The method can be used for establishing the reference research of the single-energy neutron fluence rate in the energy region from 1 keV to 100 keV, and the traceability and accuracy of the measurement result of the single-energy neutron fluence rate are ensured.

The utility model discloses a radio frequency connector for stable connection and signal transmission, which comprises an SMA male head mechanism and an SMA female head mechanism, the SMA male head mechanism comprises a shell, a mounting groove is arranged at the central position in the left side surface of the shell, a main body is arranged at the central position in the shell, an insulator is arranged at the central position in the main body, and the insulator is arranged at the central position in the shell. The outer surface of the insulator is provided with a male head outer conductor, and the leftmost side of the outer surface of the male head outer conductor is provided with a protruding ring cutting groove. Through the arrangement of the protruding ring cutting groove, the protruding ring cutting groove is formed in the leftmost side of the outer surface of the male head outer conductor, so that the male head outer conductor has elasticity, and when the SMA male head mechanism and the SMA female head mechanism are oppositely locked, the male head outer conductor can be inserted into the SMA female head mechanism and can be in close contact with the female head outer conductor; signal jump caused by poor contact is prevented, and the stability of signal transmission of the SMA connector is improved.

This invention provides a broadband three-dimensional Butler matrix for generating vortex waves, comprising eight dielectric substrates, microstrip lines, a metal ground plane, 3dB directional couplers, phase shifters, and SMA connectors. A metal ground plane lies between two dielectric substrate layers, with trace layers above and below, each composed of microstrip lines, 3dB directional couplers, and phase shifters connected in a specific order. Four dielectric substrates are placed horizontally, and four are placed vertically, connected by SMA connectors. Blind slots are provided near the SMA connectors on the dielectric substrates to facilitate SMA connector grounding. The coupler of this invention achieves cross-layer coupling and exhibits broadband characteristics. The large number of ports and the three-dimensional structure avoid complex connections between components, facilitating design, fabrication, and assembly.

This invention discloses a method based on 6 The monoenergetic neutron fluence absolute measurement device for the LiF telescope system, belonging to the field of neutron detection technology, includes a cylindrical body. A collimating aperture is installed inside the cylinder, comprising a first central aperture and a second central aperture. The first and second central apertures are coaxially aligned and have the same diameter. A composite layered neutron converter is installed at the first central aperture. The composite layered neutron converter includes an aluminum substrate, and the upper surface of the aluminum substrate is coated with a... 6 A passivated ion-implanted planar silicon detector is positioned behind the second central hole of the LiF active layer. This detector is equipped with an SMA connector. A rear cover is located at the other end of the casing, with a BNC female connector at its center leading out signal lines. Based on this structural design, absolute measurement of monoenergetic neutron fluence in the energy range of 1 keV to 100 keV can be achieved. This contributes to establishing a benchmark study of monoenergetic neutron fluence in the 1 keV to 100 keV energy range, ensuring the traceability and accuracy of monoenergetic neutron fluence measurement results.

The invention provides a passive microstrip antenna metal crack detector based on phase deviation and a detection method. The detector comprises a high dielectric constant dielectric substrate (2) covering a to-be-detected metal surface (1), a spiral structure microstrip antenna (3) covering the surface of the high dielectric constant dielectric substrate (2), a comb structure microstrip antenna (4) covering the surface of the high dielectric constant dielectric substrate (2), and a one-to-four power divider (5) connecting the spiral structure microstrip antenna (3) and the comb structure microstrip antenna (4). And the impedance matching micro-strip structure (7) is connected with the one-to-four power divider (5) and the SMA connector (6) and is mainly applied to nondestructive crack detection in metal structure health monitoring. The detector detects the phase delay of a reflected signal and the phase angle change of input impedance, and combines a four-quadrant partition positioning algorithm to realize the multi-dimensional detection of the metal surface crack, including the position, length, width and depth of the crack. Experimental results show that the structure of the invention shows.

The utility model relates to an SMA connector with a switch function, and the connector comprises a housing assembly which is provided with an accommodation cavity, one end of the accommodation cavity is provided with a through hole, one side of the accommodation cavity is provided with a first fixed clamping groove, and the other side of the accommodation cavity is provided with a second fixed clamping groove; the movable conductor is in sliding fit with the through hole; the switch conductor comprises a main conductor clamped in the first fixing clamping groove, an elastic part is arranged at the end, close to the through hole, of the main conductor, and the end, away from the through hole, of the switch conductor extends out of the shell assembly to form a first electric connection part; the fixed conductor is arranged in the second fixed clamping groove, and one end, far away from the through hole, of the fixed conductor extends out of the shell assembly to form a second electric connection part; when the movable conductor is not inserted into the accommodating cavity, the elastic part is electrically connected with the fixed conductor; after the movable conductor is inserted into the accommodating cavity, the movable conductor pushes the elastic part to be away from the fixed conductor, the fixed conductor is disconnected from the switch conductor, the movable conductor is electrically connected with the fixed switch conductor, and a disconnection gap is formed between the movable conductor and the fixed conductor.

The utility model discloses a waterproof SMA connector, and relates to the technical field of connectors, the waterproof SMA connector comprises a connector, one end of the connector is fixedly connected with a middle plastic pipe, the middle plastic pipe wraps the peripheral surface of the connector, one end of the connector is in threaded connection with a sleeve, and one end of the sleeve is provided with a sealing assembly; the sealing assembly comprises a lantern ring movably connected to the peripheral surface of the sleeve in a sleeving mode, and a sealing gasket movably connected to the peripheral surface of the sleeve in a sleeving mode is arranged on one face of the lantern ring in an abutting mode. The fixing ring, the arc-shaped block, the limiting rod, the fixing block and the compression spring cooperate, so that the lantern ring continuously compresses the sealing pad at one end of the middle plastic pipe under the elastic force of the spring, the periphery of the connector and the periphery of the sleeve are sealed in an omnibearing mode, and meanwhile the service life of the connector in a humid environment is prolonged in a threaded connection mode.

A small-size ultra-wideband 5G antenna disclosed by the present invention comprises an SMA connector, a rubber sleeve, a built-in sleeve, a coaxial cable and a spiral spring, the rubber sleeve is connected with the SMA connector in a sleeving manner, the built-in sleeve is arranged in the rubber sleeve, the spiral spring sleeves the outer side of one end, far away from the SMA connector, of the built-in sleeve, the coaxial cable is in butt joint with the SMA connector, and the coaxial cable is in butt joint with the SMA connector. The built-in sleeve comprises an outer conductor and an inner conductor, and the inner conductor penetrates through the built-in sleeve and the spiral spring; wherein the part, extending out of the built-in sleeve, of the inner conductor is a high-frequency-band radiator, and the built-in sleeve and the spiral spring are low-frequency-band radiators. Compared with the prior art, the small-size ultra-wideband 5G antenna required to be protected in the application realizes ultra-wideband full coverage of high and low frequency bands by multiplexing a plurality of radiation branch knots in the same space in a monopole antenna mode, and has the advantages of small occupied space, excellent antenna efficiency and wide frequency band.

The invention relates to the technical field of microwave lasing, in particular to a microwave lasing device and method based on a photon time crystal, and the device comprises a dielectric substrate, an annular planar waveguide disposed on the dielectric substrate, an annular gap disposed in the middle of the annular planar waveguide, and a modulation unit disposed at the periphery of the annular planar waveguide. The modulation unit comprises an analog multiplier, a fixed capacitor, an input port and an output port, and the input port comprises a port P1 for receiving an external modulation signal and a port P2 coupled to the annular planar waveguide; an external modulation signal is input to the modulation port P1 through the SMA connector, a port P2 coupled to the annular planar waveguide is connected with the annular planar waveguide through a via hole Via, and an output port of the multiplier is connected back to the annular planar waveguide through the fixed capacitor and the other via hole Via. According to the invention, gain is provided based on the momentum band gap (k-gap) generated by space-time modulation, dependence on a traditional gain medium is completely got rid of, and the antenna can work at room temperature and normal pressure.

This invention discloses a high-gain omnidirectional antenna based on a trapezoidal ridge waveguide, comprising an antenna radiating element and a feeding network. The antenna radiating element includes a first trapezoidal metal waveguide and a second trapezoidal metal waveguide. The feeding network includes a 1-to-2 stripline power divider, two TEM mode-to-TE01 mode conversion power dividers, a rectangular dielectric substrate, and a microstrip line conversion structure. The microstrip line conversion structure includes a coaxial SMA connector, a rectangular microstrip line, and two sets of metal pillars. A first rectangular ridge is introduced in the first trapezoidal metal waveguide, and a second rectangular ridge is introduced in the second trapezoidal metal waveguide to lower the cutoff frequency. A first rectangular slot on the first trapezoidal metal waveguide and a second rectangular slot on the second trapezoidal metal waveguide uniformly couple the existing symmetrical fields to generate an ideal radiation pattern. The two TEM mode-to-TE01 mode conversion power dividers achieve signal interconnection and impedance matching, and the two sets of metal pillars prevent energy leakage. The advantages are that it can achieve complete omnidirectional radiation in the horizontal direction and has stable high gain.

The application provides a passive radio frequency lightning suppressor, and relates to the technical field of lightning protection equipment. It comprises a metal shell, a PCB board, an SMA connector, a jumper, a capacitor, an inductor and a metal cover plate. The PCB board is connected in the interior of the metal shell. The PCB board is provided with a microstrip line. The two ends of the jumper and the two ends of the capacitor are connected with the microstrip line. The two ends of the inductor are respectively connected with the microstrip line and the grounding wire of the PCB board. The two ends of the metal shell in the length direction are respectively connected with an SMA connector to form an input end and an output end. The lightning suppression performance of the passive radio frequency lightning suppressor is excellent, which can realize good protection for the rear-end radio frequency circuit. The radio frequency characteristic is excellent, which can realize the requirements of low standing wave and low insertion loss, and can realize the requirement of low phase noise. In addition, the passive radio frequency lightning suppressor can meet the requirements of severe environment, has the characteristics of light weight and small size, has high reliability, and can prolong the service life of the equipment.

The invention discloses an embedded chlorinated optical fiber sensor for health detection of a power transmission and transformation foundation in a cold region, the embedded chlorinated optical fiber sensor is formed by sequentially connecting a probe, an optical fiber and an SMA connector, and a protective sleeve is fixed outside the probe; a fluorescent patch is fixed at the detection end of the probe, and the fluorescent patch is prepared from a chloride ion sensitive fluorophore MQAE, a fluorophore CF633 insensitive to chloride ions and a calcium-alginate sol-gel matrix. The sensor overcomes the sensitivity of a fluorescent chemical sensor to alkalinity, temperature, leaching and photobleaching through a ratio fluorescence analysis method, so that the sensor still has excellent durability in a severe cold environment. The sensor can be used for detecting the concentration of low chloride ions in a concrete pore solution within the range of 0.045-0.45 M in situ, and a common concentration interval in the pore solution is covered. The sensor can be used for detecting chloride ions with extremely low concentration, so that effective early warning for the initial corrosion stage of the reinforcing steel bar is realized.

The invention discloses an SMA connector model signal integrity simulation method, and particularly relates to the technical field of signal simulation, and the method comprises the steps: collecting actual measurement scattering parameter data and assembly state data for a port position of a tool provided with an SMA connector, and forming a port position connection state sample package; establishing a nominal simulation baseline model to obtain a simulation scattering parameter corresponding to a preset concerned frequency band; constructing a connection degradation comprehensive index based on the actually measured scattering parameter and the cumulative number of plugging and unplugging times, and grading according to a preset threshold; when entering a model calibration process, performing parameter inversion to obtain equivalent contact parameters and calculating model self-calibration credibility, and when the credibility is not lower than a preset credibility threshold, performing recharging to form an instantiated connection state model and a model version identifier; and comprehensively connecting the degradation comprehensive index and the model self-calibration credibility selection model to execute signal integrity simulation, comparing with a preset signal integrity judgment threshold, outputting a signal integrity judgment conclusion and a disposal suggestion, and recording the judgment conclusion and the disposal result to a port file.

This invention relates to the field of superconducting filter technology, and more particularly to a superconducting filter shielding box suitable for low-temperature environments, comprising a bottom shell, a cover plate, a ceramic substrate, SMA connectors, and a base plate. The bottom shell has openings at both ends. The base plate is installed at one opening of the bottom shell. The ceramic substrate is adhered to the base plate using low-temperature conductive adhesive. Two SMA connectors are respectively fixed to opposite side walls of the bottom shell, with one end of the SMA connector inside the bottom shell welded to the ceramic substrate. The cover plate covers the opening at the other end of the bottom shell. The cover plate has two or more evenly distributed mounting holes. Tuning sleeves are fitted inside the mounting holes. A portion of each tuning sleeve contains a metal tuning post, and the remaining portion contains a plastic tuning post, enabling the superconducting filter to operate normally at low temperatures with excellent and stable performance. It also features a manual tuning structure for convenient and direct manual adjustment, greatly improving work efficiency.