CN213304317U

CN213304317U - SMD circulator

Info

Publication number: CN213304317U
Application number: CN202022946965.3U
Authority: CN
Inventors: 吴增聪; 王春明; 田学红; 王昆伦; 谢国辉
Original assignee: Guangdong Feiytong Technology Co ltd
Current assignee: Guangdong Feiytong Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-05-28
Anticipated expiration: 2030-12-07

Abstract

The utility model belongs to the technical field of the circulator, a SMD circulator is disclosed, including ferrite, insulator, magnet, microstrip line and casing, the casing shroud the insulator with the magnet in on the ferrite, the bottom of ferrite is provided with the pad, the top surface center of ferrite is provided with the microstrip piece, the one end of microstrip line connect in the microstrip piece, the other end of microstrip line outwards extends and walks around downwards the perisporium of ferrite with the pad is connected, the insulator set up in the microstrip piece with between the magnet. The utility model provides a SMD circulator passes through the casing and covers the magnet shroud on the ferrite, reduces the magnetic leakage, reduces the insertion loss, improves the performance.

Description

SMD circulator

Technical Field

The utility model relates to a circulator technical field especially relates to a SMD circulator.

Background

The circulator is a multi-port device which transmits incident waves entering any port of the circulator into the next port according to the direction determined by the bias static magnetic field, and has good application in isolators, duplexers and reflection amplifiers.

The existing circulator can be divided into an embedded circulator and a patch circulator according to the structure, the patch circulator has a simple structure, the number of parts is far less than that of the embedded circulator, and the cost is low, so that the application of the patch circulator is wider than that of the embedded circulator. However, the existing patch type circulator has serious magnetic leakage and cannot meet the requirement of high frequency and low insertion loss.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at: the patch type circulator is provided, so that magnetic leakage is reduced, and insertion loss is reduced.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a SMD circulator, includes ferrite, insulator, magnet, microstrip line and casing, the casing shroud the insulator with the magnet in on the ferrite, the bottom of ferrite is provided with the pad, the top surface center of ferrite is provided with the microstrip piece, the one end of microstrip line connect in the microstrip piece, the other end of microstrip line outwards extends and walks around downwards the perisporium of ferrite with the pad is connected, the insulator set up in the microstrip piece with between the magnet.

As an optional technical solution, the microstrip sheet extends circumferentially with at least three tabs, and the insulator is disposed over the tabs in a covering manner.

As an optional technical solution, the number of the microstrip lines is at least three, and one end of each microstrip line connected to the microstrip patch is staggered with the protruding piece.

As an optional technical solution, at least three gaps are formed at one end of the casing close to the ferrite, and the gaps and the microstrip lines are arranged in a one-to-one correspondence manner.

As an optional technical solution, the microstrip line, the microstrip patch, and the protruding piece are integrally formed.

As an optional technical solution, the housing and the ferrite are welded.

As an optional technical solution, the housing is made of ferromagnetic material.

As an optional technical solution, the microstrip line is sputtered on the surface of the ferrite.

As an optional technical solution, the insulator is made of teflon or ceramic.

The beneficial effects of the utility model reside in that:

the utility model provides a SMD circulator sets up the pad in the bottom of ferrite, and outside PIN needle is connected at the pad, can reduce the insertion loss, improves the performance, covers over the magnet on the ferrite through the casing, can reduce the magnetic leakage.

Drawings

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

Fig. 1 is an exploded view of a first view structure of a patch circulator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second view angle of the patch circulator according to the first embodiment;

FIG. 3 is a top view of a patch circulator (housing and magnet not shown) according to one embodiment;

fig. 4 is a bottom view of a patch circulator according to an embodiment;

fig. 5 is a left side view of a patch circulator (housing not shown) according to an embodiment of the invention.

In fig. 1 to 5:

1. a ferrite;

2. an insulator;

3. a magnet;

4. a microstrip line;

5. a housing; 51. a notch;

6. a pad;

7. a micro-strip sheet;

8. a tab.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

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

The first embodiment is as follows:

as shown in fig. 1 to 5, the surface mount circulator provided in this embodiment includes a ferrite 1, an insulator 2, a magnet 3, a microstrip line 4, and a housing 5, wherein the housing 5 covers the insulator 2 and the magnet 3 on the ferrite 1, a pad 6 is disposed at the bottom of the ferrite 1, a microstrip patch 7 is disposed at the center of the top surface of the ferrite 1, one end of the microstrip line 4 is connected to the microstrip patch 7, the other end of the microstrip line 4 extends outward and is connected to the pad 6 by bypassing the peripheral wall of the ferrite 1, and the insulator 2 is disposed between the microstrip patch 7 and the magnet 3. The external PIN needle is connected with pad 6 at the bottom of ferrite 1, can reduce insertion loss, and casing 5 covers magnet 3 on ferrite 1, can reduce the magnetic leakage, improves the performance.

In the present embodiment, the microstrip patch 7 has at least three tabs 8 extending circumferentially, and the insulator 2 is disposed over the tabs 8. The additional arrangement of the lug 8 can improve the transmission efficiency of incident waves, and the insulator 2 can completely cover the lug 8 on the ferrite 1 to avoid the interference on the transmission of the incident waves. In this embodiment, the incident wave includes an electromagnetic wave.

In this embodiment, at least three microstrip lines 4 are provided, one end of each microstrip line 4 connected to the microstrip patch 7 is staggered with the protruding patch 8, and the pads 6 are arranged corresponding to the microstrip lines 4 one by one. In other embodiments, the microstrip lines 4 can be arranged according to actual needs, for example, five microstrip lines 4 can also be arranged.

In this embodiment, at least three notches 51 are formed in one end of the housing 5 close to the ferrite 1, the notches 51 are arranged in one-to-one correspondence with the microstrip lines 4, and the notches 51 are used for avoiding the microstrip lines 4.

In the present embodiment, the microstrip line 4, the microstrip patch 7 and the tab 8 are integrally formed, so as to ensure the use effect and reduce the manufacturing cost.

Preferably, the housing 5 is welded with the ferrite 1, so that the connection strength between the housing 5 and the ferrite 1 is ensured.

Preferably, the housing 5 is made of ferromagnetic material, which can ensure the magnetic shielding effect.

Preferably, the microstrip line 4 is attached to the surface of the ferrite 1 by a sputtering process, so that the attachment force of the microstrip line 4 and the ferrite 1 is ensured, and the microstrip line 4 is prevented from being separated from the ferrite 1 due to vibration.

Preferably, the insulator 2 is made of teflon or ceramic.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a SMD circulator, its characterized in that includes ferrite, insulator, magnet, microstrip line and casing, the casing shroud the insulator with the magnet in on the ferrite, the bottom of ferrite is provided with the pad, the top surface center of ferrite is provided with the microstrip piece, the one end of microstrip line connect in the microstrip piece, the other end of microstrip line outwards extends and walks around downwards the perisporium of ferrite with the pad is connected, the insulator set up in the microstrip piece with between the magnet.

2. The patch circulator of claim 1, wherein the microstrip patch is circumferentially disposed with at least three tabs, and the insulator is disposed over the tabs.

3. The patch-type circulator of claim 2, wherein the number of the microstrip lines is at least three, and one end of each microstrip line connected to the microstrip patch is staggered with the protruding piece.

4. The patch type circulator of claim 3, wherein at least three notches are formed at one end of the housing close to the ferrite, and the notches are arranged in one-to-one correspondence with the microstrip lines.

5. The patch circulator of claim 4, wherein the housing is welded to the ferrite.

6. The patch circulator of claim 2, wherein the microstrip line, the microstrip patch, and the tab are integrally formed.

7. The patch circulator of claim 1, wherein the housing is a ferromagnetic material.

8. The patch circulator of claim 1, wherein the microstrip line is sputtered on a surface of the ferrite.

9. The patch circulator of claim 1, wherein the insulator is a teflon or ceramic material.