阅读说明：本技术 一种印制电路板式环行器及其实现方法 (Printed circuit board type circulator and implementation method thereof ) 是由 李茂红 周建平 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种印制电路板式环行器,包括印制电路板,印制电路板的上方设有中心导体,中心导体的上方设有铁氧体,铁氧体的上方设有永磁体；本发明还公开了一种印制电路板式环行器的实现方法。本发明中心导体印制在印制电路板的上方,铁氧体与中心导体之间以及铁氧体与永磁体之间均通过胶体粘接,结构简单,装配方便,便于集成；本发明铁氧体与中心导体之间以及铁氧体与永磁体之间均通过胶体粘接,大大节省了组装环节的工序及成本；本发明可直接印制在终端电路板上,在产品性能上降低了环行器与客户终端电路板上引起的阻抗失配偏移误差。(The invention discloses a printed circuit board type circulator, which comprises a printed circuit board, wherein a central conductor is arranged above the printed circuit board, a ferrite is arranged above the central conductor, and a permanent magnet is arranged above the ferrite; the invention also discloses a method for realizing the printed circuit board type circulator. The central conductor is printed above the printed circuit board, and the ferrite and the central conductor as well as the ferrite and the permanent magnet are bonded through the colloid, so that the structure is simple, the assembly is convenient, and the integration is convenient; the ferrite and the central conductor and the ferrite and the permanent magnet are bonded through the colloid, so that the process and the cost of an assembly link are greatly saved; the invention can be directly printed on the terminal circuit board, and reduces the impedance mismatch offset error caused by the circulator and the client terminal circuit board on the product performance.)

1. A printed circuit board circulator, comprising: the magnetic field generating device comprises a printed circuit board, wherein a central conductor is arranged above the printed circuit board, a ferrite is arranged above the central conductor, and a permanent magnet is arranged above the ferrite.

2. The printed circuit board circulator of claim 1, wherein: the center conductor is printed above the printed circuit board.

3. The printed circuit board circulator of claim 1, wherein: and the ferrite and the central conductor and the ferrite and the permanent magnet are bonded through the colloid.

4. The printed circuit board circulator of claim 1, wherein: three pins are arranged on the periphery of the central conductor at equal intervals.

5. The printed circuit board circulator of claim 4, wherein: the end parts of the pins are bent to the bottom of the printed circuit board.

6. The printed circuit board circulator of claim 5, wherein: and a gold plating layer or a silver plating layer corresponding to the end parts of the pins is arranged on the bottom surface of the printed circuit board.

7. The printed circuit board circulator of claim 5, wherein: the part of the pin, which is positioned at the bottom of the printed circuit board, is a bottom welding edge.

8. The printed circuit board circulator of claim 5, wherein: the part of the pin, which is positioned on the side face of the printed circuit board, is a side face welding edge.

9. The method of any one of claims 1-8, comprising the steps of:

printing a central conductor above a printed circuit board;

respectively bending the three pins to the bottom of the printed circuit board or extending to a signal input/output circuit layer of the printed circuit board;

welding the part of the pin positioned at the bottom of the printed circuit board with the printed circuit board;

adhering ferrite to the upper part of the central conductor through colloid;

and (V) bonding the permanent magnet above the ferrite through the colloid.

Technical Field

The invention belongs to the technical field of circulators, and particularly relates to a printed circuit board type circulator and an implementation method thereof.

Background

Compared with 4G, 5G is improved in an all-round way, and according to the definition of 3GPP, 5G has the characteristics of high performance, low delay and high capacity, and the advantages are mainly reflected in the technologies of millimeter waves, small base stations, Massive MIMO, full duplex and the like; compared with 4G, the 5G has qualitative improvement in the aspects of network capacity, peak rate, time delay and other technical indexes. Massive MIMO is taken as one of the 5G core technologies, the limitation that the traditional antenna can only provide horizontal dimension is broken through, MIMO in the horizontal direction and the vertical direction can be realized simultaneously by introducing a two-dimensional antenna array, the spatial dimension available for MIMO is further improved, the MIMO multi-antenna technology is pushed to a higher development stage, and more development spaces are provided for comprehensively improving the performance of a wireless communication system; the antenna scale adopted in Massive MIMO sends huge changes, the number of antennas is increased, and the usage of corresponding circulators and isolators is also increased, so that each module in a base station must be miniaturized. Therefore, the requirements of microminiaturization are also put forward on the microwave circulator and the isolator;

the traditional circulator is composed of a metal cavity, a ferrite magnet, a permanent magnet, a central conductor, a ferrule, a dielectric ring, a compensating plate and the like, has a complex structure and a relatively large volume, and cannot slowly meet the practical application requirements of a new generation of products.

Therefore, a miniaturized circulator is required.

Disclosure of Invention

The present invention is directed to a printed circuit board circulator to solve the above problems. The printed circuit board type circulator provided by the invention has the characteristics of simple structure, convenience in assembly and convenience in integration.

The invention also aims to provide a method for realizing the printed circuit board type circulator.

In order to achieve the purpose, the invention provides the following technical scheme: a printed circuit board type circulator comprises a printed circuit board, wherein a central conductor is arranged above the printed circuit board, a ferrite is arranged above the central conductor, and a permanent magnet is arranged above the ferrite.

To save costs and improve efficiency, further, the center conductor is printed on top of the printed circuit board.

In order to facilitate assembly and integration, the ferrite and the central conductor and the ferrite and the permanent magnet are bonded by colloid.

In order to facilitate the welding with the terminal circuit board, furthermore, three pins are arranged on the periphery of the central conductor at equal intervals. The ends of the pins are bent to the bottom of the printed circuit board. The part of the pin at the bottom of the printed circuit board is a bottom welding edge. The part of the pin on the side of the printed circuit board is a side welding edge.

In order to ensure the stability of the connection between the pins and the printed circuit board, a gold-plated layer or a silver-plated layer corresponding to the ends of the pins is further arranged on the bottom surface of the printed circuit board.

Further, the method for implementing the printed circuit board type circulator comprises the following steps:

printing a central conductor above a printed circuit board;

respectively bending the three pins to the bottom of the printed circuit board or extending to a signal input/output circuit layer of the printed circuit board;

welding the part of the pin positioned at the bottom of the printed circuit board with the printed circuit board;

adhering ferrite to the upper part of the central conductor through colloid;

and (V) bonding the permanent magnet above the ferrite through the colloid.

Compared with the prior art, the invention has the beneficial effects that:

1. the central conductor is printed above the printed circuit board, and the ferrite and the central conductor as well as the ferrite and the permanent magnet are bonded through the colloid, so that the structure is simple, the assembly is convenient, and the integration is convenient;

2. the printed circuit board is used as the cavity, so that the traditional metal cavity is omitted, meanwhile, the printed circuit board can be directly printed on the terminal circuit board, and the terminal circuit board does not need to be independently printed, so that the cost is saved, and the efficiency is improved;

3. the ferrite and the central conductor and the ferrite and the permanent magnet are bonded through the colloid, so that the process and the cost of an assembly link are greatly saved;

4. the invention can be directly printed on the terminal circuit board, and reduces the impedance mismatch offset error caused by the circulator and the client terminal circuit board on the product performance;

5. when the invention realizes the clockwise or anticlockwise transmission of the electric signal, the invention can realize that the electric performance index voltage standing wave ratio of the product frequency between 4.7GHz and 5.5GHz is less than or equal to 1.2, the forward loss is less than or equal to 0.4dB, the isolation is more than or equal to 22dB, and the invention has the characteristic of high reliability; compared with the traditional circulator, the circulator of the invention has the advantages of reduced weight by 10-30%, reduced number of parts by about 30%, reduced number of working procedures by about 30%, improved production efficiency by more than 2 times, reduced energy consumption by about 25%, and reduced cost by more than 40%.

Drawings

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

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

in the figure: 1. a printed circuit board; 2. a center conductor; 21. a pin; 3. a ferrite; 4. and a permanent magnet.

Detailed Description

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.

Example 1

Referring to fig. 1-2, the present invention provides the following technical solutions: a printed circuit board type circulator comprises a printed circuit board 1, a central conductor 2 is arranged above the printed circuit board 1, a ferrite 3 is arranged above the central conductor 2, and a permanent magnet 4 is arranged above the ferrite 3.

Specifically, the center conductor 2 is printed above the printed circuit board 1.

Through adopting above-mentioned technical scheme to printed circuit board 1 has saved traditional metal cavity as the cavity, and simultaneously, the circulator of this application can directly be printed on terminal circuit board, does not need individual printing alone, saves the cost, raises the efficiency.

Specifically, the ferrite 3 and the central conductor 2 and the ferrite 3 and the permanent magnet 4 are bonded by the colloid.

By adopting the technical scheme, the structure is simple, the assembly is convenient, and the integration is convenient.

Specifically, three pins 21 are provided at equal intervals on the periphery of the center conductor 2. The ends of the pins 21 are bent to the bottom of the printed circuit board 1. The portion of the lead 21 at the bottom of the printed circuit board 1 is a bottom soldering land. The portion of the lead 21 located on the side of the printed circuit board 1 is a side soldering edge.

By adopting the technical scheme, the circulator and the terminal circuit board can be conveniently welded, and the welding mode of the central conductor 2 depends on the design scheme of the signal of the terminal circuit board.

Specifically, a gold plating layer or a silver plating layer corresponding to the end of the pin 21 is provided on the bottom surface of the printed circuit board 1.

By adopting the technical scheme, the pins 21 are welded with the bottom of the printed circuit board 1, so that the connection stability between the pins 21 and the printed circuit board 1 is ensured.

Example 2

Further, the method for implementing the printed circuit board type circulator comprises the following steps:

firstly, printing a central conductor 2 above a printed circuit board 1;

bending the three pins 21 to the bottom of the printed circuit board 1 or extending to a signal input/output circuit layer of the printed circuit board;

thirdly, welding the part of the pin 21 at the bottom of the printed circuit board 1 with the printed circuit board 1;

fourthly, bonding the ferrite 3 above the central conductor 2 through colloid;

and (V) bonding the permanent magnet 4 above the ferrite 3 through colloid.

In summary, the central conductor 2 is printed above the printed circuit board 1, and the ferrite 3 and the central conductor 2 and the ferrite 3 and the permanent magnet 4 are bonded through the colloid, so that the structure is simple, the assembly is convenient, and the integration is convenient; the printed circuit board 1 is used as the cavity, so that the traditional metal cavity is omitted, meanwhile, the printed circuit board can be directly printed on the terminal circuit board, and the terminal circuit board does not need to be independently printed, so that the cost is saved, and the efficiency is improved; in the invention, the ferrite 3 and the central conductor 2 and the ferrite 3 and the permanent magnet 4 are bonded by the colloid, so that the working procedure and the cost of the assembly link are greatly saved; the invention can be directly printed on the terminal circuit board, and reduces the impedance mismatch offset error caused by the circulator and the client terminal circuit board on the product performance; when the invention realizes the clockwise or anticlockwise transmission of the electric signal, the invention can realize that the electric performance index voltage standing wave ratio of the product frequency between 4.7GHz and 5.5GHz is less than or equal to 1.2, the forward loss is less than or equal to 0.4dB, the isolation is more than or equal to 22dB, and the invention has the characteristic of high reliability; compared with the traditional circulator, the circulator of the invention has the advantages of reduced weight by 10-30%, reduced number of parts by about 30%, reduced number of working procedures by about 30%, improved production efficiency by more than 2 times, reduced energy consumption by about 25%, and reduced cost by more than 40%.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.