阅读说明：本技术 一种多层pcb磁性天线 (Multilayer PCB magnetic antenna ) 是由 黄富华 孙振 于 2021-09-27 设计创作，主要内容包括：本发明公开了一种多层PCB磁性天线,包括外壳、三个铁氧体柱、五个铁氧体板、金属线路架、外部电极；本发明的有益效果在于：一、金属线路架为电镀蚀刻PCB表面上的金属带,且金属带成螺旋回圈,共有八层组合而成,围绕第二铁氧体柱,不与三个铁氧体柱互通,可利用PCB多层叠加技术,可让磁性天线集成缩小化,制作成3.2x1.6x0.8mm尺寸,并大幅減少铁氧体使用；二、本设计随着PCB的K值变化不同、金属线路架的层数可自由增減,便于制成不同型号；三、本设计为表面貼片式的元件设计,便于使用；三、PCB基板与多层印刷金属,加铁氧体金属膏填孔柱,便于生产；四、表面印刷或雷射雕刻的方式,便于生产。(The invention discloses a multilayer PCB magnetic antenna, which comprises a shell, three ferrite columns, five ferrite plates, a metal circuit frame and an external electrode, wherein the three ferrite columns are arranged on the shell; the invention has the beneficial effects that: the metal line frame is formed by electroplating and etching metal strips on the surface of the PCB, the metal strips form a spiral loop and eight layers in total, the metal line frame surrounds the second ferrite column and is not communicated with the three ferrite columns, the integration and the miniaturization of the magnetic antenna can be realized by utilizing a PCB multilayer stacking technology, the metal line frame is manufactured into a 3.2x1.6x0.8mm size, and the use of ferrite is greatly reduced; the design can freely increase and decrease the number of layers of the metal circuit frames along with different K value changes of the PCB, and the PCB can be conveniently manufactured into different models; thirdly, the design is a surface sheet type element design, so that the use is convenient; thirdly, the PCB substrate and the multilayer printed metal are added with ferrite metal paste to fill the hole columns, so that the production is convenient; and fourthly, the surface printing or laser engraving mode is convenient for production.)

1. A multilayer PCB magnetic antenna is characterized by comprising a shell (1), three ferrite columns (2), five ferrite plates (3), a metal circuit frame (4) and an external electrode (5); the shell (1) is cuboid; the three ferrite columns (2) are rectangular columns, namely a first ferrite column (21), a second ferrite column (22) and a third ferrite column (23); the five ferrite plates (3) are rectangular parallelepiped plates and are a first ferrite plate (31), a second ferrite plate (32), a third ferrite plate (33), a fourth ferrite plate (34) and a fifth ferrite plate (35); the metal circuit frame (4) is a metal strip-shaped spiral loop and is a rectangular loop; the metal circuit frame (4) is provided with a first layer of semi-square ring (41), a second layer of rectangle (42), a third layer of rectangle (43), a fourth layer of rectangle (44), a fifth layer of rectangle (45), a sixth layer of rectangle (46), a seventh layer of rectangle (47), an eighth layer of rectangle (48), seven connecting rods (49) and a guide rod (40); the guide rod (40) is provided with a leading-out end (401), and the eighth layer rectangle (48) is provided with a leading-in end (481); the external electrode (5) is provided with a first external electrode (51) and a second external electrode (52); the first external electrode (51) is provided with a first front part (511), a first rear part (512) and a first bottom part (513); the second external electrode (52) is provided with a second front part (521), a second rear part (522) and a third bottom part (533); the first ferrite column (21) is arranged at the left part in the shell (1), the second ferrite column (22) is arranged at the middle part in the shell (1), and the third ferrite column (23) is arranged at the right part in the shell (1); the first ferrite plate (31) and the second ferrite plate (32) are respectively arranged on the upper surface and the lower surface of the first ferrite column (21); the third ferrite plate (33) is arranged below the second ferrite post (22); the fourth ferrite plate (34) and the fifth ferrite plate (35) are respectively arranged on the upper surface and the lower surface of the third ferrite column (23); the metal circuit frame (4) is sleeved in the second ferrite column (22), and the metal circuit frame (4) surrounds the second ferrite column (22); the external electrode (5) is arranged in the middle of the shell (1), the first external electrode (51) is connected with the leading-out end (401), and the second external electrode (52) is connected with the channel-in end (481).

2. A multilayer PCB magnetic antenna according to claim 1, wherein the first layer of semi-square loops (41) is mounted above the second layer of rectangles (42) and connected by a connecting bar (49); the second layer of rectangles (42) are arranged above the third layer of rectangles (43) and are connected through a connecting rod (49); the third layer of rectangle (43) is arranged above the fourth layer of rectangle (44) and is connected with the fourth layer of rectangle through a connecting rod (49); the fourth layer of rectangles (44) are arranged above the fifth layer of rectangles (45) and are connected through a connecting rod (49); the fifth layer rectangle (45) is arranged above the sixth layer rectangle (46) and is connected with the sixth layer rectangle through a connecting rod (49); the sixth layer of rectangles (46) are arranged above the seventh layer of rectangles (47) and are connected through connecting rods (49); the seventh layer of rectangles (47) are arranged above the eighth layer of rectangles (48) and are connected through connecting rods (49); one end of the first layer of semi-square ring (41) is connected with the guide rod (40).

3. A multilayer PCB magnetic antenna according to claim 1, characterized in that the material of the three ferrite posts (2), five ferrite plates (3) is ferrite, i.e. a composite oxide of iron group and other metal elements.

4. A multilayer PCB magnetic antenna according to claim 1, wherein the metal wiring frame (4) is made by combining a PCB material with a metal material; the PCB material is a printed circuit board, namely a carrier material for electrical interconnection of electronic components.

5. A multilayer PCB magnetic antenna according to claim 1, characterized in that the material of the outer electrode (5) is conductive silver paste.

Technical Field

The invention relates to the technical field of electronic elements, in particular to a multilayer PCB magnetic antenna.

Background

The magnetic antenna is formed by winding two groups of coils which are not connected with each other on a magnetic rod and is used for receiving electromagnetic waves in a space. The magnetic antenna has good directivity, so that when the radio rotates in a certain direction, the sound is loudest, and the noise is reduced. It features that the loaded magnetic material has a certain magnetic permeability and dielectric coefficient.

The existing magnetic antenna has the following disadvantages: the integration and miniaturization are insufficient, the volume is large, and the ferrite consumption is high; secondly, different models are inconvenient to manufacture; thirdly, the design of the element which is not a surface sheet type element is inconvenient to use; and thirdly, the structure is complex, and the production is inconvenient.

Disclosure of Invention

The invention mainly solves the technical problem of providing a multilayer PCB magnetic antenna which can integrate the miniaturization, surface sheet type element design and is convenient to use; is convenient for production.

In order to solve the above problems, the present invention provides a multilayer PCB magnetic antenna, comprising a housing, three ferrite posts, five ferrite plates, a metal line frame, and an external electrode; the shell is cuboid; the three ferrite columns are rectangular columns, namely a first ferrite column, a second ferrite column and a third ferrite column; the five ferrite plates are cuboid plates and comprise a first ferrite plate, a second ferrite plate, a third ferrite plate, a fourth ferrite plate and a fifth ferrite plate; the metal circuit frame is a metal strip-shaped spiral loop and is a rectangular loop; the metal circuit frame is provided with a first layer of semi-square ring, a second layer of rectangle, a third layer of rectangle, a fourth layer of rectangle, a fifth layer of rectangle, a sixth layer of rectangle, a seventh layer of rectangle, an eighth layer of rectangle, seven connecting rods and guide rods; the guide rod is provided with a leading-out end, and the eighth layer of rectangle is provided with a channel-entering end; the external electrode is provided with a first external electrode and a second external electrode; the first external electrode is provided with a first front part, a first rear part and a first bottom part; the second external electrode is provided with a second front part, a second rear part and a third bottom part; the first ferrite column is arranged at the left part in the shell, the second ferrite column is arranged at the middle part in the shell, and the third ferrite column is arranged at the right part in the shell; the first ferrite plate and the second ferrite plate are respectively arranged on the upper surface and the lower surface of the first ferrite column; the third ferrite plate is arranged below the second ferrite column; the fourth ferrite plate and the fifth ferrite plate are respectively arranged on the upper surface and the lower surface of the third ferrite column; the metal circuit frame is sleeved in the second ferrite column and surrounds the second ferrite column; the external electrode is arranged in the middle of the shell, the first external electrode is connected with the leading-out end, and the second external electrode is connected with the leading-in end.

Furthermore, the first layer of semi-square ring is arranged above the second layer of rectangle and is connected through a connecting rod; the second layer of rectangles are arranged above the third layer of rectangles and are connected through a connecting rod; the third layer of rectangles are arranged above the fourth layer of rectangles and are connected through a connecting rod; the fourth layer of rectangles are arranged above the fifth layer of rectangles and are connected through a connecting rod; the fifth layer of rectangles are arranged above the sixth layer of rectangles and are connected through a connecting rod; the sixth layer of rectangles are arranged above the seventh layer of rectangles and are connected through connecting rods; the seventh layer of rectangles are arranged above the eighth layer of rectangles and are connected through a connecting rod; one end of the first layer of semi-square ring is connected with the guide rod.

Further, the three ferrite columns and the five ferrite plates are made of ferrite, namely, composite oxides of iron group and other metal elements.

Furthermore, the metal circuit frame is formed by combining a PCB material and a metal material; the PCB material is a printed circuit board, namely a carrier material for electrical interconnection of electronic components.

Furthermore, the external electrode is made of conductive silver paste.

The invention discloses a multilayer PCB magnetic antenna, which comprises a shell, three ferrite columns, five ferrite plates, a metal circuit frame and an external electrode, wherein the three ferrite columns are arranged on the shell; the invention has the beneficial effects that: the metal circuit frame is formed by electroplating and etching metal strips on the surface of a PCB, the metal strips form a spiral loop, eight layers of metal strips are combined, the metal strip surrounds a second ferrite column and is not communicated with three ferrite columns, the integration and the miniaturization of a magnetic antenna can be realized by utilizing a PCB multilayer stacking technology, the size of the magnetic antenna can be made to be 3.2x1.6x0.8mm, and the use of ferrite is greatly reduced; the design can freely increase and decrease the number of layers of the metal circuit frames along with different K value changes of the PCB, and the PCB can be conveniently manufactured into different models; thirdly, the design is a surface sheet type element design, so that the use is convenient; thirdly, the PCB substrate and the multilayer printed metal are added with ferrite metal paste to fill the hole columns, so that the production is convenient; and fourthly, the surface printing or laser engraving mode is convenient for production.

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, and it is obvious that the drawings in the description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is an external view schematically showing the present invention.

Fig. 2 is a schematic view of the internal anatomy of the present invention.

FIG. 3 is a schematic view of the assembly of three ferrite posts with five ferrite plates according to the present invention.

Fig. 4 is a schematic view of the metal wiring rack of the present invention.

Fig. 5 is a schematic view of an external electrode of the present invention.

The objectives, features, and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, 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 some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 5, the present invention provides a multilayer PCB magnetic antenna, which includes a housing 1, three ferrite posts 2, five ferrite plates 3, a metal wiring frame 4, and an external electrode 5; the shell 1 is cuboid; the three ferrite columns 2 are rectangular columns, namely a first ferrite column 21, a second ferrite column 22 and a third ferrite column 23; the five ferrite plates 3 are rectangular parallelepiped plates, and include a first ferrite plate 31, a second ferrite plate 32, a third ferrite plate 33, a fourth ferrite plate 34, and a fifth ferrite plate 35; the metal circuit frame 4 is a metal strip-shaped spiral loop and is a rectangular loop; the metal circuit frame 4 is provided with a first layer of semi-square ring 41, a second layer of rectangle 42, a third layer of rectangle 43, a fourth layer of rectangle 44, a fifth layer of rectangle 45, a sixth layer of rectangle 46, a seventh layer of rectangle 47, an eighth layer of rectangle 48, seven connecting rods 49 and a guide rod 40; the guide rod 40 is provided with a leading-out end 401, and the eighth layer rectangle 48 is provided with a leading-in end 481; the external electrode 5 is provided with a first external electrode 51 and a second external electrode 52; the first external electrode 51 is provided with a first front part 511, a first rear part 512 and a first bottom part 513; the second external electrode 52 is provided with a second front portion 521, a second rear portion 522 and a third bottom portion 533; the first ferrite column 21 is arranged at the left part in the shell 1, the second ferrite column 22 is arranged at the middle part in the shell 1, and the third ferrite column 23 is arranged at the right part in the shell 1; the first ferrite plates 31 and the second ferrite plates 32 are respectively arranged on the upper and lower surfaces of the first ferrite posts 21; the third ferrite plate 33 is installed under the second ferrite posts 22; the fourth ferrite plate 34 and the fifth ferrite plate 35 are respectively arranged on the upper surface and the lower surface of the third ferrite column 23; the metal line frame 4 is sleeved in the second ferrite column 22, and the metal line frame 4 surrounds the second ferrite column 22; the external electrode 5 is arranged in the middle of the housing 1, the first external electrode 51 is connected with the lead-out end 401, and the second external electrode 52 is connected with the lead-in end 481.

As shown in fig. 2 and 4, the first layer of semi-square rings 41 is arranged above the second layer of rectangles 42 and is connected through a connecting rod 49; the second layer of rectangles 42 are arranged above the third layer of rectangles 43 and are connected through a connecting rod 49; the third layer of rectangles 43 are arranged above the fourth layer of rectangles 44 and are connected through a connecting rod 49; the fourth layer of rectangles 44 are arranged above the fifth layer of rectangles 45 and are connected through a connecting rod 49; the fifth layer rectangle 45 is arranged above the sixth layer rectangle 46 and is connected with the sixth layer rectangle through a connecting rod 49; the sixth layer of rectangles 46 are arranged above the seventh layer of rectangles 47 and are connected through connecting rods 49; the seventh layer of rectangles 47 are arranged above the eighth layer of rectangles 48 and are connected through a connecting rod 49; one end of the first layer of semi-square ring 41 is connected with the guide rod 40.

As shown in fig. 2 and 3, the three ferrite posts 2 and the five ferrite plates 3 are made of ferrite, i.e., a composite oxide of an iron group and other metal elements.

As shown in fig. 2 and 4, the metal circuit frame 4 is formed by combining a PCB material and a metal material; the PCB material is a printed circuit board, namely a carrier material for electrical interconnection of electronic components.

As shown in fig. 1, 2 and 5, the material of the external electrode 5 is conductive silver paste.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.