CN217134640U

CN217134640U - Low-resilience central conduction band structure

Info

Publication number: CN217134640U
Application number: CN202220499727.9U
Authority: CN
Inventors: 杨勤; 赵春美; 张华峰
Original assignee: CETC 9 Research Institute
Current assignee: CETC 9 Research Institute
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-08-05
Anticipated expiration: 2032-03-09

Abstract

The utility model discloses a center conduction band structure of low resilience, including ground plane, transmission line and welding plate, the transmission line is used for wrapping up the ferrite, and every transmission line is buckled from ferrite lower surface border department for the first time, is buckled to ferrite offside upper surface border department for the second time, buckles to ground plane lower surface department for the fourth time, buckles to the third time and is equipped with a transition portion on the transmission line of buckling the room for the third time for the second time, transition portion is between the several along being close to the direction branch that the third time buckled, and every interval is rectangular shape, and the width steadilys decrease in proper order. The utility model discloses the transmission line is at the fashioned resilience force of welding part in the well guide die is constituteed, has still reduced the area of welding dish. The material cost of the middle guide module can be reduced, the deformation of the middle guide module is reduced, the production qualification rate of the middle guide module is improved, the reliability of corresponding products is improved, and the fault rate of welding of an upper plate at the rear end of a user is reduced; the consistency of the impedance of the product ports is improved.

Description

Low-resilience central conduction band structure

Technical Field

The utility model relates to a central conduction band structure of circulator especially relates to a central conduction band structure of low resilience.

Background

Communication equipment manufacturers have more urgent needs for low-cost and high-reliability lumped parameter circulator isolators, and manufacturers of various large components propose lumped parameter circulator isolators with PCBs as carriers based on the reduction of cost. The PCB type lumped parameter circulator isolator puts requirements on the coplanarity of three transmission line welded ports and a ground plane on the shaping of the intermediate conducting module due to the change of the structural design. The current design is that a central conduction band wraps a central junction circuit to form a middle conduction module, the central conduction band mainly comprises a welding disc, a transmission line and a ground plane, and the welding surface of the transmission line and the ground plane of the central conduction band in the middle conduction module are in the same plane after the central conduction band is formed, so that the welding reliability of the middle conduction module is ensured. This requires three transmission lines, each of which encloses a central junction circuit, which has the following problems:

1. the current central conduction band adopts the copper foil of 0.05mm thick to make the shaping well guide die group, and the effect is not good after the shaping, kick-backs easily after the shaping of the topmost transmission wire of well guide die group.

2. During the welding of the middle guide module, the false welding or missing welding of the welding pad of the uppermost transmission line of the middle guide module is easily caused.

3. The fashioned product of well guide module of current center conduction band design, the condition that the resilience force is too big to lead to the inside appearance of device to open a way of upper plate welding center conduction band shaping department exists when user's rear end uses.

4. After the current central conduction band is designed and formed, the consistency of the electrical performance of the device is influenced after the device is installed, and the port impedance of the device is high in dispersity.

5. The material thickness of the central conduction band is reduced, the resilience force of the middle guide module after forming can be reduced, and the qualification rate of the middle guide module is improved. However, when the experiment finds that the thickness of the central conduction band is reduced to 0.03mm, the input end transmission line of the middle conduction module is in the risk of fusing when the high-peak power experiment of the low-frequency lumped-parameter circulator is carried out.

Disclosure of Invention

An object of the utility model is to provide a solve and lead the welding pin shaping difficulty of module in the lumped parameter circulator isolator of PCB type, the resilience volume is big, has the rosin joint in the welding and does not weld the problem, a central conduction band structure of low resilience.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a center conduction band structure of low resilience, includes ground plane and three transmission lines, and a bonding pad is connected to the one end that the ground plane was kept away from to the transmission line, the transmission line is used for wrapping up the ferrite of ground plane upper surface, and every transmission line is followed ferrite lower surface border department and is buckled, is buckled to ferrite offside upper surface border department for the second time, buckles to ground plane lower surface department for the fourth time, buckles to be equipped with a transition portion on the transmission line of buckling for the third time within a definite time for the second time, the transition portion is close to the third time and buckles the department to divide into the several interval along the direction of buckling near the third time, and every interval is rectangular shape, and the width subtracts progressively in proper order.

Preferably, the method comprises the following steps: each zone is arranged coaxially.

Preferably, the method comprises the following steps: the transmission line is made of copper foil with the thickness of 0.05 mm.

Preferably, the method comprises the following steps: the welding disc is integrally formed on the transmission line, and the width of the welding disc is the same as that of the transmission line at the fourth bending position.

Compared with the prior art, the utility model has the advantages of:

the transition part is arranged and is close to the third bending part, the transition part can change the width of the transmission line on the two sides of the third bending part, the transmission line is divided into an anterior section facing the second bending part and a posterior section facing the fourth bending part, the anterior section is wide and is used for ensuring the electrical performance design, the posterior section is narrow and is used for welding, the resilience force of the transmission line formed at the welding position in the middle guide die set is reduced, and the area of a welding disc is also reduced.

The utility model discloses still adopt the copper foil that 0.05mm is thick to carry out the design of central conduction band, lead the material cost of module in the reduction.

The utility model discloses can lead the shaping quality of module in improving, lead the deformation of module in reducing, lead module production qualification rate in improving.

The utility model discloses can improve the reliability of corresponding product, reduce user's rear end upper plate welded fault rate.

The utility model discloses can improve the uniformity of product port impedance, promote product electrical property uniformity, improve the qualification rate of product.

Drawings

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

FIG. 2 is a schematic view of the present invention;

FIG. 3 is a schematic diagram of a central conduction band of the prior art;

fig. 4 is a schematic representation of the use of a central conduction band of the prior art.

In the figure: 1. a ground plane; 2. a transmission line; 3. welding a disc; 4. a first bending part; 5. a second bending part; 6. bending for the third time; 7. a fourth bending part; 8. a transition section; 9. ferrite.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1: referring to fig. 1-2, a low-resilience central conduction band structure comprises a ground plane 1 and three transmission lines 2, wherein one end, far away from the ground plane 1, of each transmission line 2 is connected with a welding disc 3, the transmission line 2 is used for wrapping a ferrite 9 on the upper surface of the ground plane 1, each transmission line 2 is bent from the lower surface edge of the ferrite 9 for the first time, is bent from the upper surface edge of the ferrite 9 for the second time to the upper surface edge of the ferrite 9 for the third time and is bent from the lower surface of the ground plane 1 for the fourth time, a transition part 8 is arranged on the transmission line 2 between the second time bending and the third time, the transition part 8 is close to the third time bending part 6 and is divided into a plurality of intervals along the direction close to the third time bending, each interval is a long strip shape, and the width is gradually decreased. For convenience of description, the first bending, the second bending, the third bending and the fourth bending are respectively referred to as a first bending 4, a second bending 5, a third bending 6 and a fourth bending 7.

In this embodiment, each section is coaxially disposed, and the transmission line 2 is made of a copper foil with a thickness of 0.05 mm. The welding disc 3 is integrally formed on the transmission line 2, and the width of the welding disc 3 is the same as that of the transmission line 2 at the fourth bending part 7. In practice, the number of intervals may be 1-3, and 2 are shown in fig. 1 and 2.

Referring to fig. 3 and 4, comparing fig. 1 and 3 for the structure of the central conduction band in the prior art, it can be seen that, after the transition part 8 is provided, the transmission line 2 at the rear end of the transition part 8 is narrowed, and the size of the welding disc 3 is also reduced.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a center conduction band structure of low resilience, includes ground plane and three transmission lines, and a bonding pad is connected to the one end that the ground plane was kept away from to the transmission line, the transmission line is used for wrapping up the ferrite of ground plane upper surface, and every transmission line is followed ferrite lower surface border department and is buckled for the first time, is buckled for the second time to upper surface border department, buckles to ferrite offside upper surface border department for the third time, buckles to ground plane lower surface department for the fourth time, its characterized in that: the transmission line between the second bending and the third bending is provided with a transition part, the transition part is close to the third bending and is divided into a plurality of intervals along the direction close to the third bending, each interval is in a long strip shape, and the width is gradually decreased.

2. A low rebound central conduction band structure as set forth in claim 1 wherein: each zone is arranged coaxially.

3. A low rebound central conduction band structure as set forth in claim 1 wherein: the transmission line is made of copper foil with the thickness of 0.05 mm.

4. A low rebound central conduction band structure as set forth in claim 1 wherein: the welding disc is integrally formed on the transmission line, and the width of the welding disc is the same as that of the transmission line at the fourth bending position.