CN212783733U

CN212783733U - Radio frequency insulator vertical transition connection

Info

Publication number: CN212783733U
Application number: CN202021516527.7U
Authority: CN
Inventors: 张家旺; 奚弘佳
Original assignee: Shanghai Wekan Electronic & Technology Co ltd
Current assignee: Shanghai Wekan Electronic & Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-23
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a radio frequency insulator vertical transition connection, which comprises a metal box body, a microstrip line and a vertical transition structure arranged in the inner cavity of the metal box body; the metal box body is characterized in that the upper surface and the lower surface of the metal box body are respectively provided with a microstrip line. Be provided with first air chamber and second air chamber from top to bottom through the insulator, first air chamber and second air chamber respectively set up wall about the metal box inner chamber, and first air chamber and second air chamber are run through respectively and run through metal box body and microstrip line connection in both ends about the insulator, are of value to the practicality that promotes the vertical transition mode, provide at DC ~ 18GHz within range vertical transition structure to have the size little, easily processing characteristics.

Description

Radio frequency insulator vertical transition connection

Technical Field

The utility model relates to a perpendicular transitional coupling of insulator specifically is a perpendicular transitional coupling of radio frequency insulator, belongs to device design and manufacturing technical field.

Background

With the development of science and technology, the demands for miniaturization, light weight and high integration of modules in communication, radar, electronic countermeasure, radio navigation and other systems are continuously increased. Miniaturization requires vertical transition connections between the top and bottom layers of the microwave cavity. The vertical transition connection forms generally include forms of SMP blind sockets, radio frequency cables, radio frequency insulators, and the like. Although the SMP blind socket is low in cost, the SMP blind socket is large in size and cannot be miniaturized. The radio frequency cable connection has complex internal system, multiple signal channels and high-frequency transmission requirement. The internal connection depends on a radio frequency cable and a radio frequency connector, so that the structure is large in size and cannot meet the miniaturization requirement, optimization needs to be provided in the existing radio frequency insulator vertical transition mode, standing waves and insertion loss are reduced, and the influence on system indexes is reduced.

The existing insulator vertical transition on the market has the advantage of small volume, and no good matching exists. The standing wave is greater than 3 at 18GHz and the insertion loss is also greater than 1 dB. This causes transmission performance deterioration for the module. Signal reflection, excitation of high-order modes and radiation generation can even lead to abnormal operation of the whole circuit system and damage of devices. Therefore, the device for protecting the top impact of the hook of the radio frequency insulator vertical transition connection crane is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a radio frequency insulator perpendicular transitional coupling to prior art not enough provides good standing wave and insertion loss for microstrip line connection between the different layers, has that the size is little, easily processing characteristics.

The utility model realizes the purpose through the following technical proposal, a radio frequency insulator vertical transition connection, which comprises a metal box body, a microstrip line and a vertical transition structure arranged in the inner cavity of the metal box body; the metal box body is characterized in that the upper surface and the lower surface of the metal box body are respectively provided with a microstrip line;

the vertical transition structure comprises an insulator, wherein a first air cavity and a second air cavity are arranged on the insulator from top to bottom, the first air cavity and the second air cavity are respectively arranged on the upper wall surface and the lower wall surface of the inner cavity of the metal box body, and the upper end and the lower end of the insulator respectively penetrate through the first air cavity and the second air cavity and penetrate through the metal box body to be connected with the microstrip line.

Preferably, the radius depths of the first air cavity and the second air cavity are not consistent, the radius of the first air cavity is smaller than the maximum radius of the insulator, and the radius of the second air cavity is larger than the maximum radius of the insulator.

Preferably, the insulator is a coaxial line, the microstrip line transmission mode is a quasi-TEM wave, and the coaxial line transmission mode is a TEM wave.

Preferably, the insulator is fixed between the first air cavity and the second air cavity through clamping.

Preferably, the insulator is connected with the microstrip line through soldering tin.

Preferably, the metal box body is a hollow rectangular structure.

Preferably, the microstrip line has a rectangular structure.

The utility model has the advantages that:

1. the utility model discloses a first air chamber and second air chamber are provided with from top to bottom to the insulator, and first air chamber and second air chamber respectively set up wall about the metal box body inner chamber, and the upper and lower both ends of insulator run through first air chamber and second air chamber respectively and run through the metal box body and be connected with the microstrip line, are favorable to promoting the practicality of vertical transition mode, provide the vertical transition structure in DC ~ 18GHz scope, and have the size little, easily processing characteristics;

2. the utility model discloses a coaxial line can be regarded as to the insulator, and microstrip line transmission mode is accurate TEM ripples, and coaxial line transmission mode is the TEM ripples, provides good standing wave and insertion loss for microstrip line connection between the different layers. This has obvious help to the promotion of microwave module index. The microwave module is beneficial to realizing miniaturization and integration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a connection diagram of a modeling model of the present invention;

fig. 3 is a schematic view of the optimized port standing wave structure of the present invention;

fig. 4 is a schematic diagram of the optimized insertion loss of the present invention.

In the figure: 1. a microstrip line; 2. an insulator; 3. a metal case; 4. a first air chamber; 5. a second air chamber.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, a vertical transition connection of a radio frequency insulator 2 includes a metal box 3, a microstrip line 1, and a vertical transition structure disposed in an inner cavity of the metal box 3; the device is characterized in that the upper surface and the lower surface of the metal box body 3 are respectively provided with a microstrip line 1;

the vertical transition structure comprises an insulator 2, a first air cavity 4 and a second air cavity 5 are arranged on the insulator 2 from top to bottom, the first air cavity 4 and the second air cavity 5 are respectively arranged on the upper wall surface and the lower wall surface of an inner cavity of a metal box body 3, and the upper end and the lower end of the insulator 2 respectively penetrate through the first air cavity 4 and the second air cavity 5 and penetrate through the metal box body 3 to be connected with the microstrip line 1.

The radius depths of the first air cavity 4 and the second air cavity 5 are not consistent, the radius of the first air cavity 4 is smaller than the maximum radius of the insulator 2, the radius of the second air cavity 5 is larger than the maximum radius of the insulator 2, so that the practicability of a vertical transition mode is improved, a vertical transition structure in a DC-18 GHz range is provided, and the vertical transition structure has the characteristics of small size and easiness in processing; the insulator 2 can be regarded as a coaxial line, the transmission mode of the microstrip line 1 is a quasi-TEM wave, and the transmission mode of the coaxial line is a TEM wave, so that good standing wave and insertion loss are provided for the connection of the microstrip line 1 between different layers. This has obvious help to the promotion of microwave module index. The microwave module is beneficial to realizing miniaturization and integration; the insulator 2 is fixed between the first air cavity 4 and the second air cavity 5 through clamping; the insulator 2 is connected with the microstrip line 1 through soldering tin, and the soldering tin connection is more stable and firm; the metal box body 3 is of a hollow rectangular structure; the microstrip line 1 is a rectangular structure.

When the utility model is used, the electric elements appearing in the application are externally connected with a power supply and a control switch when in use, firstly, a first air chamber 4 and a second air chamber 5 are respectively arranged above and below the insulator 2, the first air chamber 4 and the second air chamber 5 are respectively arranged on the upper wall surface and the lower wall surface of the inner cavity of the metal box body 3, the upper end and the lower end of the insulator 2 respectively penetrate through the first air chamber 4 and the second air chamber 5 and penetrate through the metal box body 3 to be connected with the microstrip line 1 through soldering tin, the radial depth of the first air chamber 4 and the second air chamber 5 is inconsistent, the radius of the first air chamber 4 is smaller than the maximum radius of the insulator 2, the radius of the second air chamber 5 is larger than the maximum radius of the insulator 2, the insulator 2 is fixed between the first air chamber 4 and the second air chamber 5 through clamping, which is beneficial to improving the practicability of a vertical transition mode, and provides a vertical, and has the characteristics of small size and easy processing.

It is well within the skill of those in the art to implement, without undue experimentation, the present invention does not relate to software and process improvements, as related to circuits and electronic components and modules.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A radio frequency insulator vertical transition connection comprises a metal box body, a microstrip line and a vertical transition structure arranged in an inner cavity of the metal box body; the metal box body is characterized in that the upper surface and the lower surface of the metal box body are respectively provided with a microstrip line;

2. A radio frequency insulator vertical transition connection according to claim 1, wherein the first air cavity and the second air cavity are of non-uniform radial depth, the radius of the first air cavity being less than the insulator maximum radius, and the radius of the second air cavity being greater than the insulator maximum radius.

3. A radio frequency insulator vertical transition connection according to claim 1, wherein the insulator is a coaxial line, the microstrip line transmission mode is a quasi-TEM wave, and the coaxial line transmission mode is a TEM wave.

4. The vertical transition connection of a radio frequency insulator according to claim 1, wherein the insulator is secured between the first air cavity and the second air cavity by a snap fit.

5. The radio frequency insulator vertical transition connection according to claim 1, wherein the insulator is connected to the microstrip line by solder.

6. A radio frequency insulator vertical transition connection as claimed in claim 1, wherein said metal box is a hollow rectangular structure.

7. A radio frequency insulator vertical transition connection according to claim 1, wherein said microstrip line is a rectangular structure.