CN211045923U

CN211045923U - Single-support medium coaxial adapter with capacitive compensation

Info

Publication number: CN211045923U
Application number: CN202020007014.7U
Authority: CN
Inventors: 李凯; 青春; 冯浩
Original assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Current assignee: AVIC Shenyang Xinghua Aero Electrical Appliance Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-07-17
Anticipated expiration: 2030-01-02

Abstract

The utility model relates to a microwave electronic equipment interconnection technical field, a take coaxial adapter of single supporting medium of capacitive compensation, its characterized in that: including SMA jack casing (1), SMPM contact pin casing (2) and lock pin subassembly, the lock pin subassembly includes interior lock pin (3) and insulating support medium (4) that set up with the axle center, insulating support medium (4) are fixed on the outer peripheral face of interior lock pin (3), the SMA jack casing (1) is inserted by the one end of keeping away from having insulating support medium (4), be equipped with first stair structure (11) in SMA jack casing (1), be equipped with second stair structure (21) in SMPM contact pin casing (2), when SMA jack casing (1) and SMPM contact pin casing (2) are inserting with the state, SMPM contact pin casing (2) pass through threaded connection with SMA jack casing (1), the both ends of insulating support medium (4) respectively with first stair structure (11) and second stair structure (21) looks butt.

Description

Single-support medium coaxial adapter with capacitive compensation

Technical Field

The utility model relates to a microwave electronic equipment interconnection technical field, concretely relates to by coaxial adapter of single medium of SMA commentaries on classics SMPM interface.

Background

A coaxial adapter is a commonly used microwave component, and is one of the most basic components for interconnecting microwave electronic devices. With the current miniaturization trend of the whole system, the rf coaxial connector and the rf coaxial adaptor are also developing towards miniaturization and high frequency, so the SMA and SMPM interface connector is more and more widely applied, and the requirement for the adaptor is higher and higher, so the SMA/SMPM adaptor design is necessary.

In the coaxial adapter, a supporting medium is needed to fix the inner ferrule and the outer housing to each other to form a stable whole, but the supporting medium can cause the change of the relative dielectric constant therein, thereby causing the discontinuity of impedance, while the traditional adapter generally adopts a dual-supporting medium structure, which often causes a larger standing wave ratio. The single insulation medium adapter disclosed in patent No. CN105514794A does not realize the conversion of different interfaces. Therefore, a coaxial adapter for realizing the transition from SMA to SMPM interface is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a take coaxial adapter of single supporting medium of capacitive compensation, it has the advantage that realizes the conversion transition between SMA to the SMPM interface.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a coaxial adapter of single support medium of capacitive compensation, includes SMA jack casing, SMPM contact pin casing and lock pin subassembly, the lock pin subassembly includes interior lock pin and the insulating support medium that sets up with the axle center, the outer peripheral face of lock pin including insulating support medium is fixed, the lock pin subassembly inserts SMA jack casing by keeping away from the one end that has the insulating support medium, be equipped with first stair structure in the SMA jack casing, be equipped with second stair structure in the SMPM contact pin casing, when SMA jack casing and SMPM contact pin casing are inserting and state, SMPM contact pin casing passes through threaded connection with SMA jack casing, the both ends of insulating support medium respectively with first stair structure and second stair structure looks butt.

Preferably, the insulating support medium main body is cylindrical, mounting holes penetrating through the left end face and the right end face are formed in the insulating support medium main body, a concave assembling portion is formed in the outer peripheral surface of the inner plug core head section, and the insulating support medium is fixedly connected with the assembling portion of the inner plug core in an interference fit mode through the mounting holes.

Preferably, the threaded connection part of the SMPM pin shell and the SMA jack shell is coated with threaded locking glue.

Preferably, the left end face and the right end face of the insulating support medium are respectively provided with a symmetrical annular groove, a plurality of through holes extending along the axis direction are further arranged in the insulating support medium, and the left end and the right end of each through hole are respectively provided with openings which are located in the annular grooves and are distributed at equal intervals.

Preferably, the through holes are circular through holes, and the number of the through holes is 6.

Preferably, the inner ferrule is made of beryllium bronze gold plating.

Preferably, the material of the insulating support medium is polytetrafluoroethylene.

Preferably, the SMA jack housing and/or the SMPM pin housing are/is made of tin bronze gold plating.

Use the utility model discloses a beneficial effect is: the utility model provides a take single supporting medium coaxial adapter of capacitive compensation, its insulating supporting medium have along a plurality of circular through-holes that the axis direction extends, control both ends and have the annular groove, adopt above-mentioned two kinds of compensation modes to combine together, are favorable to reducing the whole relative dielectric constant of insulating supporting medium, effectively offset the influence of high sense as the capacitive compensation, guarantee the uniformity of impedance, reduce the reflection of electromagnetic wave, promote voltage standing wave ratio index. Meanwhile, the method combining the two compensation methods can better solve the problem that the mechanical strength is greatly reduced due to a single compensation method. In addition, the change from the SMA interface size to the SMPM interface size is realized through the matching of the inner insertion core and the shell, and the transition between the two size interfaces is realized by using a dislocation impedance compensation method in the transformation of the SMA interface and the SMPM interface; simultaneously, the two outer shells are fastened in a mode of adding glue through threads, and the large vibration impact can be borne.

Drawings

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

fig. 2 is a schematic structural diagram of the inner ferrule of the present invention;

FIG. 3 is a schematic structural view of the insulating support medium of the present invention;

fig. 4 is a schematic structural diagram of the SMA jack housing of the present invention;

fig. 5 is a schematic structural diagram of the SMPM pin housing of the present invention;

the reference numerals include:

1-SMA jack housing; 11-a first step structure; 2-SMPM pin housing; 21-a second stepped structure; 3-inner insertion core; 31-an assembly part; 4-an insulating support medium; 41-mounting holes; 42-an annular groove; 43-through hole.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, a single support medium coaxial adapter with capacitive compensation includes an SMA jack housing 1, an SMPM pin housing 2 and a pin assembly, where the pin assembly includes an inner pin 3 and an insulating support medium 4 coaxially disposed, the insulating support medium 4 is fixed on the outer circumferential surface of the inner pin 3, the pin assembly is inserted into the SMA jack housing 1 from one end far away from the end having the insulating support medium 4, a first step structure 11 is disposed in the SMA jack housing 1, a second step structure 21 is disposed in the SMPM pin housing 2, when the SMA jack housing 1 and the SMPM pin housing 2 are in an insertion state, the SMPM pin housing 2 and the SMA jack housing 1 are connected by a thread, two ends of the insulating support medium 4 are respectively abutted against the first step structure 11 and the second step structure 21, the outer circumferential surface of the insulating medium support is abutted against the inner circumferential surface of the SMA jack housing 1, the jack housing 1 and the SMPM pin housing 2 are connected by the inner circumferential surface of the SMA jack housing 1, The cooperation of the first step structure 11 and the second step structure 21 clamps the insulating support medium 4.

The main body of the insulating support medium 4 is cylindrical, the inside of the main body is provided with mounting holes 41 penetrating through the left end surface and the right end surface, the outer peripheral surface of the head section of the inner inserting core 3 is provided with a sunken assembling part 31, and the insulating support medium 4 is fixedly connected with the assembling part 31 of the inner inserting core 3 in an interference fit manner through the mounting holes 41.

The screwed joint of the SMPM pin shell 2 and the SMA jack shell 1 is coated with the screwed locking glue, so that the stable connection between the two shells is realized.

The left end face and the right end face of the insulating supporting medium 4 are respectively provided with a symmetrical annular groove 42, a plurality of through holes 43 extending along the axis direction are further arranged in the insulating supporting medium 4, and the left end and the right end of each through hole 43 are respectively provided with openings which are positioned in the annular grooves 42 and are distributed at equal intervals.

The through holes 43 are circular through holes 43, and the number of the through holes is 6.

The inner insertion core 3 is made of beryllium bronze gold plating, the mechanical strength of the material is high, the stability of the inner insertion core is facilitated, and in addition, due to the skin effect of signals, the surface gold plating can enable the product to have good high-frequency transmission performance.

The insulating support medium 4 is made of polytetrafluoroethylene, and the polytetrafluoroethylene can be conveniently machined and can meet certain support strength.

The SMA jack shell 1 and/or the SMPM pin shell 2 are/is made of tin bronze gold plating, the material has good processing performance and can ensure certain mechanical strength, and in addition, due to the skin effect of signals, the surface gold plating can enable the product to have good high-frequency transmission performance.

The utility model provides a coaxial adapter closely cooperates together through the sunken assembly portion 31 on the 3 last with 4 interference fit of insulating support medium of interior lock pin, and insulating support medium 4 carries out the capacitive compensation through the mode of ring channel and through-hole 43 simultaneously, and SMA jack casing 1 closely couples through the mode of screw thread rubber coating with SMPM contact pin casing 2, and passes through fixed insulating support medium 4 of cooperation between the inner structure, is that this kind of adapter can bear great vibration impact. The utility model discloses the part can be made through the machining mode, has higher production efficiency. Meanwhile, the insulating support medium 4 adopts two compensation modes, so that the problem of overlarge voltage standing wave ratio caused by impedance mismatching can be greatly reduced. In addition, a dislocation compensation method is used in the transformation of the SMA interface and the SMPM interface, and the transition between the two size interfaces is realized.

The above description is only a preferred embodiment of the present invention, and many changes can be made in the detailed description and the application scope according to the idea of the present invention for those skilled in the art, which all belong to the protection scope of the present invention as long as the changes do not depart from the concept of the present invention.

Claims

1. A single support medium coaxial adapter with capacitive compensation is characterized in that: including SMA jack casing (1), SMPM contact pin casing (2) and lock pin subassembly, the lock pin subassembly includes interior lock pin (3) and insulating support medium (4) that set up with the axle center, insulating support medium (4) are fixed on the outer peripheral face of interior lock pin (3), the SMA jack casing (1) is inserted by the one end of keeping away from having insulating support medium (4), be equipped with first stair structure (11) in SMA jack casing (1), be equipped with second stair structure (21) in SMPM contact pin casing (2), when SMA jack casing (1) and SMPM contact pin casing (2) are inserting with the state, SMPM contact pin casing (2) pass through threaded connection with SMA jack casing (1), the both ends of insulating support medium (4) respectively with first stair structure (11) and second stair structure (21) looks butt.

2. The single support dielectric coaxial adapter with capacitive compensation of claim 1, wherein: the insulating support medium (4) main part is cylindric, and its inside has seted up mounting hole (41) that run through left and right sides both ends face, have sunken assembly portion (31) on interior lock pin (3) head section outer peripheral face, insulating support medium (4) pass through mounting hole (41) and interior lock pin (3) assembly portion (31) interference fit fixed connection.

3. The single support dielectric coaxial adapter with capacitive compensation of claim 2, wherein: and the threaded connection part of the SMPM pin shell (2) and the SMA jack shell (1) is coated with threaded locking glue.

4. The single support dielectric coaxial adapter with capacitive compensation of any one of claims 1-3, wherein: the insulation support medium (4) is provided with symmetrical annular grooves (42) on the left end face and the right end face respectively, a plurality of through holes (43) extending along the axis direction are further arranged in the insulation support medium (4), and the left end and the right end of each through hole (43) are respectively provided with openings which are positioned in the annular grooves (42) and are distributed at equal intervals.

5. The single support dielectric coaxial adapter with capacitive compensation of claim 4, wherein: the through holes (43) are round through holes (43), and the number of the through holes is 6.

6. The single support dielectric coaxial adapter with capacitive compensation of claim 1, wherein: the inner insertion core (3) is made of beryllium bronze gold plating.

7. The single support dielectric coaxial adapter with capacitive compensation of claim 1, wherein: the insulating supporting medium (4) is made of polytetrafluoroethylene.

8. The single support dielectric coaxial adapter with capacitive compensation of claim 1, wherein: the SMA jack shell (1) and/or the SMPM pin shell (2) are/is made of tin bronze gold plating.