CN215933970U

CN215933970U - SMA connector

Info

Publication number: CN215933970U
Application number: CN202122495290.XU
Authority: CN
Inventors: 朱魏; 郭嘉帅
Original assignee: Shenzhen Volans Technology Co Ltd
Current assignee: Shenzhen Volans Technology Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-03-01
Anticipated expiration: 2031-10-15
Also published as: WO2023061092A1

Abstract

The utility model provides an SMA connector, comprising: a flange plate; the dielectric material is arranged in the flange plate; the central conductor penetrates through the dielectric material and is fixedly connected with the dielectric material; the connector is fixed on the upper surface of the flange plate and is positioned on the outer side of the dielectric material; a column base fixing groove penetrates through the flange plate, a plurality of column bases are detachably arranged in the column base fixing groove, the column bases can move along the column base fixing groove, and the column bases are located on the lower surface of the flange plate; the fixing clamps are oppositely arranged on two sides of the connector and fixed on the upper surface of the flange plate; the fixation clamp comprises a fixation clamp body, a clamping portion and a button, wherein the clamping portion is formed by extending the one end of the fixation clamp body close to the direction protrusion of the connector, and the button is formed by extending the direction protrusion of the connector away from one side of the fixation clamp body. The utility model has convenient fixation and wide application range.

Description

SMA connector

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of electronic equipment, in particular to an SMA connector.

[ background of the utility model ]

The SMA (Sub-Miniature-A) connector is a widely used coaxial connector with small-sized screw connection, and has the characteristics of wide frequency band, excellent performance, reliability and long service life. The SMA connector is suitable for connecting a radio frequency cable or a microstrip line in a radio frequency loop of a microwave device and a digital communication system within a frequency range of 0-26.5 GHz. Applications range from telecommunications, networking, wireless communication, and detection and measurement instruments.

Due to different testing environments, the structures of the used SMA connectors have different specifications, such as a positive foot seat, an inclined angle seat, a flange plate seat and the like. The SMA connector of each specification is only suitable for one test environment and has large limitation. In addition, the traditional coaxial line is fixed by screwing threads, so that the coaxial line is troublesome to use and poor in dismounting effect.

Therefore, there is a need to provide a new SMA connector to solve the above technical problems.

[ Utility model ] content

The utility model aims to overcome at least one technical problem and provide an SMA connector which is convenient to fix, wide in application range and convenient to replace.

In order to achieve the above object, the present invention provides an SMA connector comprising:

a flange plate;

a dielectric material disposed within the flange;

the central conductor penetrates through the dielectric material and is fixedly connected with the dielectric material;

the connector is fixed on the upper surface of the flange plate and is positioned on the outer side of the dielectric material;

a column base fixing groove penetrates through the flange plate, a plurality of column bases are detachably arranged in the column base fixing groove, the column bases can move along the column base fixing groove, and the column bases are located on the lower surface of the flange plate;

the fixing clamps are oppositely arranged on two sides of the connector and fixed on the upper surface of the flange plate;

the fixation clamp comprises a fixation clamp body, a clamping portion and a button, wherein one end of the fixation clamp body is close to the joint portion formed by extending the direction protrusion of the connector, and the button formed by extending the direction protrusion of the connector is far away from one side of the fixation clamp body.

Furthermore, one side of the flange plate is sunken to form a mounting groove, a detection pen is arranged in the mounting groove, and the detection pen is connected with the flange plate through a telescopic metal wire.

Furthermore, the flange surface forming the mounting groove is arranged in parallel with one side surface of the fixing clamp body.

Further, the stylus is a 50 ohm stylus.

Furthermore, the two column base fixing grooves are oppositely arranged, the number of the column bases is four, and two column bases are installed in each column base fixing groove.

Further, the column shoe is mounted in the column shoe fixing groove by a screw.

Furthermore, one side of the flange plate is oppositely provided with a plurality of mounting holes, and the mounting holes are used for placing the screws for dismounting.

Furthermore, the column base fixing groove comprises a positioning groove, the positioning groove is located on the lower surface of the flange plate, and the column base is clamped into the positioning groove.

Further, the column base has a square cross section.

Furthermore, an external thread structure is arranged on the outer wall of the connector.

Compared with the prior art, the SMA connector can be suitable for different application scenes by detachably mounting the plurality of column bases on the flange plate; the column base can move along the column base fixing groove so as to match the test requirements of test boards with different thicknesses; when the column base is aged, the column base can be disassembled and replaced, so that the maintenance is convenient; through the relative mount that sets up in the both sides of connector for fixed coaxial line has not twisting of fixation clamp, only need down to press can be blocked by the fixation clamp, and the fixation clamp both sides have two buttons that can the elasticity, convenient to use.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic diagram of the overall structure of an SMA connector provided in the utility model;

FIG. 2 is a schematic structural diagram of an SMA connector provided in the present invention;

FIG. 3 is a schematic structural diagram of an SMA connector provided in the present invention without a column base;

FIG. 4 is a block diagram of an SMA connector bias pin provided in the present invention;

FIG. 5 is a block diagram of a positive foot of an SMA connector provided in the utility model;

FIG. 6 is a schematic structural diagram of an SMA connector provided in the present invention;

FIG. 7 is a first state diagram illustrating the use of a retaining clip of the SMA connector according to the present invention;

FIG. 8 is a second state diagram of the retaining clip of the SMA connector according to the present invention;

FIG. 9 is a diagram of a probe usage state of the SMA connector provided in the utility model;

fig. 10 is a circuit diagram of the test impedance provided by the present invention.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides an SMA connector comprising: flange plate 1, dielectric material 2, central conductor 3, connector 4 and fixation clamp. The dielectric material 2 is arranged in the flange plate 1; the central conductor 3 penetrates through the dielectric material 2 and is fixedly connected; the connector 4 is fixed on the upper surface of the flange plate 1 and positioned outside the dielectric material 2; a column base fixing groove 11 penetrates through the flange plate 1, a plurality of column bases 5 are detachably arranged in the column base fixing groove 11, the column bases 5 can move along the column base fixing groove 11, and the column bases 5 are located on the lower surface of the flange plate 1; the fixing clips 6 are oppositely arranged on two sides of the connector 4 and fixed on the upper surface of the flange plate 1; the fixation clamp includes fixation clamp body 61, by the one end of fixation clamp body 61 is close to the joint portion 62 that the direction protrusion of connector 4 extended and formed and by one side of fixation clamp body 61 is kept away from the button 63 that the direction protrusion of connector 4 extended and formed.

Specifically, the flange 1 is substantially square in shape and is made of copper plated with gold. A through medium material hole is arranged at the center of the flange plate 1, and the medium material 2 is fixed in the medium material hole. The central conductor 3 is in a shape of a long and thin cylinder, the central conductor 3 penetrates through the dielectric material 2, one end of the central conductor 3 extends out of the upper surface of the flange plate 1, and the other end of the central conductor extends out of the lower surface of the flange plate 1. The centre conductor 3 serves for signal conduction when the SMA connector is used for connection. The dielectric material 2 outside the central conductor 3 ensures that the impedance of the central conductor 3 carrying the signal is 50 ohms. Optionally, the dielectric material 2 is PTFE, and the central conductor 3 is made of copper plated with gold.

The connector 4 can connect an external signal source with the SMA connector. The connector 4 is cylindrical in shape, hollow inside and made of copper plated with gold. The inner diameter of the connector 4 is the same as the outer diameter of the dielectric material 2, and the connector 4 is fixed on the upper surface of the flange plate 1 and is positioned outside the dielectric material 2. When the connector 4 is connected with an external signal source, the central conductor 3 is contacted with a signal end of the signal source, so that signal transmission is realized.

The clamping portion 62 is a triangular clamping structure, and clamping and fixing are convenient to carry out.

The flange plate 1 is provided with through screw holes 12, and the screw holes 12 can be used for fixing the flange plate 1.

In this embodiment, one side of the flange plate 1 is recessed to form a mounting groove 14, a probe 7 is arranged in the mounting groove 14, and the probe 7 is connected with the flange plate 1 through a retractable metal wire 8. After the probe 7 is pulled out from the mounting groove 14, the probe 7 is pointed on the EVB test board 9, and the EVB impedance can be calculated by using the connector vector network. By containing the probe 7 in the mounting groove 14, the whole probe is small and exquisite, does not occupy space, and meanwhile, the probe 7 can be protected, so that the service life of the probe 7 is prolonged.

Alternatively, the flange surface forming the mounting groove 14 is disposed in parallel with one side surface of the fixing clip body 61. The installation of the installation groove 14 and the installation and the use of the probe 7 are convenient.

Optionally, the stylus 7 is a 50 ohm stylus.

In this embodiment, the two column base fixing grooves 11 are oppositely arranged, the number of the column bases 5 is four, and two column bases 5 are installed in each column base fixing groove 11. The column foot 5 can move along the column foot fixing groove 11, so that the SMA connector can be suitable for different application scenarios. The position of the column shoe 5 can be easily adjusted by means of the screw 53.

Alternatively, the column shoe 5 is mounted in the column shoe fixing groove 11 by a screw 53. The column base 5 is provided with a plurality of column bases 5, and the column bases 5 are detachably arranged on the lower surface of the flange plate 1 through column base fixing grooves 11. The stub 5 may be connected to the test board by means of welding. In this embodiment, the column shoe 5 is mounted on the shoe fixing groove 11 by a screw 53. The column base 5 may be connected to the column base fixing groove 11 by other means, such as a snap-fit manner, which is not limited by the present invention.

As shown in fig. 3, the SMA connector is not provided with a post 5, which corresponds to a conventional SMA connector without a post. The test environment for which the SMA connector without mounting stub 5 is suitable is when the SMA connector is used in a metal shielded cavity. In order to conduct the signal in the metal shielding cavity, the SMA connector is usually fixed to the sidewall of the metal shielding cavity, and the central conductor 3 for transmitting the signal extends into the metal shielding cavity. At this time, the stud 5 of the SMA connector is removed, and the SMA connector is fixed on the metal shielding cavity through the screw hole 12.

As shown in fig. 4, four column bases 5 are mounted on the SMA connector, wherein the column base 51 is located at an end of the column base fixing groove 11, and the column base 52 is located at a middle of the column base fixing groove 11. Such SMA connectors correspond to conventional biassed SMA connectors. The biased-foot type SMA connector is used in research and development tests, and the position of the column foot 52 is moved according to the thickness of the test board by fixing the column foot 51 to the end of the column foot fixing groove 11 by a screw. After the location of the pedestal 52 is determined, the pedestal is welded to the test board.

As shown in fig. 5, four column bases are mounted on the SMA connector, and a column base 51 is located at one end of the column base fixing groove 11, and a column base 52 is located at the other end of the column base fixing groove 11. Such SMA connectors correspond to conventional positive-legged SMA connectors. The positive-pin type SMA connector is mostly used in mass production tests, the positions of the equipment and the connecting line are mostly vertical, and in order to not occupy the area, a positive-pin welding mode is often required to be used on a test board.

In this embodiment, a plurality of mounting holes 13 are oppositely arranged on one side of the flange plate 1, and the plurality of mounting holes 13 are used for placing the screws 53 for disassembly.

In this embodiment, the column base fixing groove 11 includes a positioning groove 111, the positioning groove 111 is located on the lower surface of the flange plate 1, and the column base 5 is snapped into the positioning groove 111. When the column base 5 needs to be installed, the column base 5 is clamped into the positioning groove 111, and the positioning groove 111 can prevent the column base 5 from rotating unnecessarily.

Optionally, the cross section of the column base 5 is square. The square column foot 5 is convenient for processing and manufacturing. The pedestal 5 may have other shapes, and the present invention is not limited thereto.

In this embodiment, an external thread structure is provided on the outer wall of the connector 4. The external thread structure can be used for connection with other components.

In this embodiment, as shown in fig. 10, left term 50 ohm in the figure is the connecting head of the SMA, the Mlin in the middle is the EVB to be tested, and the right 50 ohm is the probe, which constitutes a circuit for testing impedance, and the real part and the imaginary part of the impedance value can be obtained by connecting the SMA through the vector network. Thereby optimizing the EVB impedance.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the utility model.

Claims

1. An SMA connector, comprising:

a flange plate;

a dielectric material disposed within the flange;

2. The SMA connector of claim 1, wherein one side of the flange plate is recessed to form a mounting groove, and a probe is disposed in the mounting groove and connected to the flange plate by a retractable wire.

3. The SMA connector according to claim 2, wherein a flange surface forming the mounting groove is disposed in parallel with a side surface of the fixing clip body.

4. The SMA connector of claim 2, wherein the stylus is a 50 ohm stylus.

5. The SMA connector of claim 1, wherein the two stub fixing grooves are oppositely disposed, the four stubs are provided, and two stubs are installed in each stub fixing groove.

6. The SMA connector of claim 5, wherein the stub is mounted in the stub fixing groove by a screw.

7. The SMA connector of claim 6, wherein a plurality of mounting holes are provided on an opposite side of the flange for receiving the screws for removal.

8. The SMA connector of claim 1, wherein the stub securing slots comprise detents located on a lower surface of the flange plate, the stubs snapping into the detents.

9. The SMA connector of claim 8, wherein the stub has a square cross-section.

10. The SMA connector of claim 1, wherein the outer wall of the connector is provided with an external thread structure.