CN212136656U - Coaxial microstrip circulator - Google Patents

Abstract

The utility model relates to a coaxial microstrip circulator, which comprises a shell with an opening at the top end, wherein notches are arranged around the shell; the microstrip line port is opposite to the notch, integrally embedded into a coaxial port in the shell and a cover plate matched with one end of the shell; an inner conductor of a circulator is arranged at one end in the shell, an inner conductor of a coaxial port is arranged in the coaxial port, and the inner conductor of the circulator is fixedly connected with the inner conductor of the coaxial port; the utility model discloses a port is coaxial port, two other ports are microstrip line port on the casing, and original circulator can be saved to one section microstrip line between the radio frequency connector on the circuit board to this structure, can reduce the microstrip line loss, reduces the whole area of circuit board, promotes the miniaturization and the low-power consumption of equipment.

Description

Coaxial microstrip circulator

Technical Field

The utility model belongs to the technical field of the wireless communication equipment technique and specifically relates to a coaxial microstrip circulator that changes.

Background

Circulators and isolators are commonly used in the communications industry, where a circulator is a multi-port device that transmits an incident wave entering any one of its ports sequentially into the next port, in a direction determined by the static bias magnetic field. The isolator is formed by connecting one end of the circulator to a load.

The existing circulator on the circuit board is usually welded on the surface of the circuit board by adopting a surface mounting technology, so that three ports of the circulator are all microstrip line welded ports. Coaxial ports are typically used for rf connections to other components or circuit boards, and therefore coaxial connectors are typically soldered to the circuit board next to the circulator. With the development of communication technology, the designs of communication devices and communication devices tend to be more and more miniaturized and lower in power consumption.

The radio frequency signal comes out from one port of the circulator and needs to be led to the next radio frequency device or the next circuit board, and the radio frequency coaxial connector is connected with the radio frequency device or the circuit board. Three ports of the existing circulator are microstrip line ports, and radio frequency signals pass through the microstrip line on a section of circuit board after passing through the ports of the circulator and then reach the radio frequency coaxial port on the circuit board. Therefore, a section of microstrip line circuit is added, and a coaxial-to-microstrip conversion is added, so that more circuit board area is occupied, the miniaturization of equipment is limited, and more line loss is brought.

Therefore, how to provide a coaxial microstrip-to-microstrip circulator to solve the problems existing in the prior art is a technical problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a coaxial microstrip-to-microstrip circulator, so as to reduce microstrip line loss, reduce the overall area of a circuit board, and promote miniaturization and low power consumption of the device.

In order to achieve the above object, the present application provides the following technical solutions.

A coaxial to microstrip circulator comprising:

the device comprises a shell with an opening at the top end, wherein notches are formed in the periphery of the shell;

the microstrip line port is opposite to the position of the notch;

the coaxial port is integrally embedded in the shell and has the opposite direction to the microstrip line port;

a cover plate engaged with one end of the housing.

Preferably, a circulator inner conductor is arranged at one end in the shell, a coaxial port inner conductor is arranged in the coaxial port, and the circulator inner conductor is fixedly connected with the coaxial port inner conductor.

Preferably, the circulator inner conductor and the coaxial port inner conductor are vertically arranged, and the circulator inner conductor and the coaxial port inner conductor are fixedly connected in a welding or riveting mode.

Preferably, a first coaxial port insulator contacting with the bottom end of the shell is arranged below the coaxial port inner conductor, and a second coaxial port insulator is arranged above the coaxial port inner conductor.

Preferably, a through hole is provided on the second coaxial port insulator, through which the coaxial port inner conductor passes.

Preferably, a coaxial port outer conductor is disposed on the second coaxial port insulator, and the outer periphery of the coaxial port outer conductor is close to the inner wall of the housing.

Preferably, a functional component is arranged at one end in the shell and is stacked with the circulator inner conductor.

Preferably, a circulator pin is connected to the circulator inner conductor.

Preferably, the number of the microstrip line ports is 2, and the number of the coaxial ports is 1.

Preferably, the cover plate is in threaded fixed connection or interference connection with the shell, and an operation hole for conveniently operating the cover plate is formed in the upper portion of the cover plate.

The utility model discloses the beneficial technological effect who obtains:

1) the utility model solves the problems existing in the using process of the prior circulator, one port of the circulator is a coaxial port, and the other two ports are microstrip line ports, thus reducing the loss of the microstrip line, reducing the whole area of the circuit board and promoting the miniaturization and low power consumption of the equipment;

2) the utility model discloses wholly inlay inside the casing coaxial port, can save one section microstrip line between original circulator to the radio frequency connector on the circuit board, reduce the line loss, dwindle circuit board usable floor area.

The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic structural diagram of a coaxial microstrip-to-microstrip circulator according to an embodiment of the disclosure;

FIG. 2 is a top view of a coaxial to microstrip circulator in an embodiment of the present disclosure;

FIG. 3 is a centerline cutaway view of a coaxial to microstrip circulator in one embodiment of the present disclosure;

figure 4 is an exploded view of a coaxial to microstrip circulator in one embodiment of the present disclosure.

In the above drawings: 100. a housing; 110. a notch; 120. a microstrip line port; 121. a circulator inner conductor; 130. a coaxial port; 131. a coaxial port inner conductor; 132. a first coaxial port insulator; 133. a second coaxial port insulator; 134. a through hole; 135. a coaxial port outer conductor; 140. a cover plate; 141. an operation hole; 150. a circulator pin is inserted; 160. a circulator insulator; 170. and (4) functional components.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

As shown in fig. 1, a coaxial microstrip-to-microstrip circulator includes: the device comprises a shell 100 with an open top end, a microstrip line port 120, a coaxial port 130 and a cover plate 140 matched with one end of the shell 100.

A slot 110 is formed around the housing 100, and the microstrip line port 120 is disposed right opposite to the slot 110 and below the housing 100.

The coaxial port 130 is integrally embedded in the housing 100, and is opposite to the microstrip line port 120.

External threads are arranged on the periphery outside the cover plate 140, and internal threads corresponding to the external threads are arranged on the periphery inside the shell 100, so that the cover plate 140 is fixedly connected with the shell 100.

In one embodiment, a snap ring is disposed around the outer periphery of the cover plate 140, a snap groove corresponding to the external thread is disposed around the inner periphery of the housing 100, and the cover plate 140 is fixed to the housing 100 by extrusion.

In one embodiment, the cover plate 140 is in interference fit with the housing 100.

In one embodiment, an operation hole 141 for conveniently operating the cover plate 140 is formed above the cover plate 140, so that a worker can conveniently maintain and repair the cover plate 140.

As shown in fig. 2, the number of the microstrip line ports 120 is 2, and the number of the coaxial ports 130 is 1.

As shown in fig. 3, a circulator inner conductor 121 is disposed at one end in the housing 100, a coaxial port inner conductor 131 is disposed in the coaxial port 130, the circulator inner conductor 121 and the coaxial port inner conductor 131 are perpendicularly disposed, and the circulator inner conductor 121 and the coaxial port inner conductor 131 are fixedly connected.

The circulator inner conductor 121 and the coaxial port inner conductor 131 are fixedly connected by welding.

In one embodiment, the circulator inner conductor 121 and the coaxial port inner conductor 131 are fixedly connected by riveting.

A functional component 170 is arranged at one end in the shell 100, the functional component 170 is overlapped with the circulator inner conductor 121, the functional component 170 is arranged at the lower end of the cover plate 140, and the functional component 170 comprises a magnet, a magnetic field adjusting sheet, a ferrite, a center conductor, a magnet and the like.

It should be noted that the functional module 170 may further include more or less components according to actual usage requirements.

As shown in fig. 4, a circulator pin 150 is connected to the circulator inner conductor 121, and the circulator inner conductor 121 and the circulator pin 150 are fixedly connected by welding.

In one embodiment, a socket is disposed below the housing 100, a circular hole is disposed on the socket, the circulator pin 150 passes through the circular hole to be fixedly connected with the circulator inner conductor 121, and a circulator insulator 160 is disposed on the contact side of the circulator inner conductor 121 and the socket.

A first coaxial port insulator 132 is provided below the coaxial port inner conductor 131 to be in contact with the bottom end of the housing 100, and a second coaxial port insulator 133 is provided above the coaxial port inner conductor 131.

The second coaxial port insulator 133 is provided with a through hole 134, and the coaxial port inner conductor 131 passes through the through hole 134.

A coaxial port outer conductor 135 is disposed on the second coaxial port insulator 133, and the outer periphery of the coaxial port outer conductor 135 is close to the inner wall of the housing 100.

In the installation method of the coaxial microstrip circulator, the circulator inner conductor 121 and the coaxial port inner conductor 131 are fixedly connected by welding or riveting, then the parts are sequentially installed, as shown in fig. 4, the cover plate 140 is screwed and fixed in the shell, the coaxial port outer conductor 135 is pressed in, and finally the circulator inner conductor 121 and the circulator pin 150 are welded to complete the assembly of the circulator.

The coaxial microstrip circulator integrally embeds the coaxial port 130 in the shell 100, one port is the coaxial port 130, and the other two ports are the microstrip line ports 120, so that a section of microstrip line between the original circulator and the radio frequency connector on a circuit board can be omitted, the line loss is reduced, the use area of the circuit board is reduced, and the miniaturization and low power consumption of equipment are promoted.

The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. All changes, modifications, substitutions, integrations and parameter changes to the embodiments, which are within the spirit and principle of the invention, can be made by conventional substitution or can realize the same function without departing from the principle and spirit of the invention, and all fall into the protection scope of the invention.

Claims (10)

1. A coaxial to microstrip circulator, comprising:

the device comprises a shell (100) with an opening at the top end, wherein notches (110) are formed in the periphery of the shell (100);

a microstrip port (120) directly opposite the location of the slot (110);

a coaxial port (130) integrally embedded in the housing (100) and having a direction opposite to that of the microstrip line port (120);

a cover plate (140) engaged with one end of the housing (100).

2. The coaxial microstrip circulator of claim 1 wherein a circulator inner conductor (121) is disposed at one end within the housing (100), a coaxial port inner conductor (131) is disposed within the coaxial port (130), and the circulator inner conductor (121) and the coaxial port inner conductor (131) are fixedly connected.

3. The coaxial microstrip circulator of claim 2 wherein the circulator inner conductor (121) and the coaxial port inner conductor (131) are vertically disposed, and the circulator inner conductor (121) and the coaxial port inner conductor (131) are fixedly connected by welding or riveting.

4. The coaxial microstrip circulator of claim 2 wherein a first coaxial port insulator (132) is disposed below the coaxial port inner conductor (131) and contacts the bottom end of the housing (100), and a second coaxial port insulator (133) is disposed above the coaxial port inner conductor (131).

5. The coaxial microstrip circulator of claim 4 wherein said second coaxial port insulator (133) has a through hole (134) disposed therein, said coaxial port inner conductor (131) passing through said through hole (134).

6. The coaxial microstrip circulator of claim 4 wherein said second coaxial port insulator (133) has a coaxial port outer conductor (135) disposed thereon, said coaxial port outer conductor (135) having an outer circumference proximate to an inner wall of said housing (100).

7. The coaxial microstrip circulator of claim 2 wherein a functional component (170) is disposed at one end within said housing (100), said functional component (170) being stacked on said circulator inner conductor (121).

8. The coaxial microstrip circulator of claim 2 wherein a circulator pin (150) is attached to the circulator inner conductor (121).

9. The coaxial microstrip-to-microstrip circulator of claim 1 wherein the number of microstrip line ports (120) is 2 and the number of coaxial ports (130) is 1.

10. The coaxial microstrip circulator of claim 1 wherein the cover plate (140) is in a screw-threaded or interference fit connection with the housing (100).

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