CN113904187B

CN113904187B - Microwave ferrite circulator based on dielectric adjustable film and assembling method thereof

Info

Publication number: CN113904187B
Application number: CN202111236485.0A
Authority: CN
Inventors: 巴谋兵; 徐春明; 杨燕; 黄国强
Original assignee: Tdg Tech Co ltd
Current assignee: Tdg Tech Co ltd
Priority date: 2021-10-23
Filing date: 2021-10-23
Publication date: 2022-05-03
Anticipated expiration: 2041-10-23
Also published as: CN113904187A

Abstract

The invention discloses a microwave ferrite circulator based on a dielectric adjustable film, which relates to the technical field of ferrite circulators and comprises an end cover, a base and an integrated core, wherein the integrated core is contained in a cavity formed by combining the end cover and the base, and the microwave ferrite circulator also comprises: switching subassembly, switching subassembly is equipped with threely along vertical direction, every switching subassembly is connected with one of them port of center conductor respectively, and mutual independence between the switching subassembly, switching subassembly rotates with the end cover to be connected, with the three-port external connection switching subassembly of traditional circulator, it is adjustable to rotate between switching subassembly and the casing, and simultaneously, the adapter can overturn arbitrary angle, the convenience of being connected with other functional component when having improved the circulator and using, the overall arrangement of the circuit of being convenient for and the integration of having improved the part equipment have reduced the volume of whole equipment.

Description

Microwave ferrite circulator based on dielectric adjustable film and assembling method thereof

Technical Field

The invention belongs to the technical field of ferrite circulators, and particularly relates to a microwave ferrite circulator based on a dielectric adjustable film and an assembling method thereof.

Background

The circulator is a multi-port device, the transmission of electromagnetic waves in the circulator can only be isolated along the circular opposite direction of a single direction, and the circulator is widely applied to a wireless transceiving system as an important microwave ferrite device. The most commercially available at present are circulators based on spinel and garnet ferrites, which are used at high frequencies

The transmission of the microwave signal is controlled by the ferrite. Due to its non-reciprocity, the insertion loss in the forward direction is small, while the energy is absorbed for the most part in the reverse direction. The circulator is mainly used between the output end of the high-frequency power amplifier and the load, and plays the role of mutual independence and mutual isolation. The load impedance does not affect the working state of the power amplifier under the condition of change, even open circuit or short circuit, thereby protecting the power amplifier.

A circulator generally has three ports, and during operation, an incident wave entering one port can be sequentially transmitted to a multi-port device of the next port according to a direction determined by an electrostatic bias magnetic field, for example: signals are input from the 1 port, signals can only be output from the 2 port, signals input from the 2 port can only be output from the 3 port, and the like, so that the circulator is called. According to the different deflection directions, the device can be divided into a forward clock circulator and a backward clock circulator.

The ports of the existing circulator are fixed, the connection limitation between the ports and other components is large when the existing circulator is used specifically, lines are easy to fold and wind, the connection of the lines is unstable, and the assembly efficiency is low, so that the microwave ferrite circulator based on the dielectric adjustable film and the assembly method thereof are provided.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention is directed to a microwave ferrite circulator based on a dielectric tunable film and a method for assembling the same, so as to solve the problems mentioned in the background art.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a microwave ferrite circulator based on adjustable film of dielectric, this circulator adopt microstrip three port structure, includes end cover, base and integrated core, and integrated core is accomodate and is held the intracavity at end cover and base combination, still includes:

the three switching assemblies are arranged in the vertical direction, each switching assembly is connected with one of the ports of the central conductor and independent from one another, the switching assemblies are rotatably connected with the end covers, each switching assembly comprises a switching head, an annular support and a switching piece, the switching heads are communicated with the integrated core body through the switching pieces, the switching heads are arranged on one side of the outer edge of the annular support and rotatably connected with the annular support, the rotating axis of the switching heads is perpendicular to the axis of the annular support, a packaging block is arranged on one side, close to the axis of the annular support, of the switching heads, and the packaging block is used for packaging the switching heads in a short-circuit mode with the switching heads;

and the limiting assembly is used for limiting the axial movement of the annular support and radially pressing the annular support to fix the annular support.

As a further scheme of the invention, the base is provided with an annular block, the annular support is sleeved on the annular block and is rotationally connected with the annular block, the limiting assembly comprises a limiting block, three groups of limiting clamping blocks are uniformly distributed on the limiting block along the vertical direction, an annular groove for accommodating the limiting clamping blocks is formed in the inner annular side of the annular support, the limiting block is accommodated in a convex groove formed in the outer circumferential surface of the annular block in the radial direction, and the limiting block is connected with the convex groove in a sliding manner and slides along the radial direction of the annular block.

As a further scheme of the invention, the convex groove penetrates through the top of the annular block, the inclined wedge is arranged above the limiting block, the limiting block is provided with a T-shaped chute, the inclined wedge is connected with the T-shaped chute in a sliding manner, and the top end of the inclined wedge is fixedly connected with the end cover.

As a further scheme of the invention, a connecting elastic sheet is arranged in the annular groove, the adapter is connected with the connecting elastic sheet through a data line, an elastic sheet is arranged between the connecting elastic sheet and the inner wall of the annular groove, and the connecting elastic sheet is in contact movable connection with the adapter through a contact.

As a further scheme of the invention, the adaptor is in a round rod shape, a bump and a chuck are arranged on the adaptor, the bump and the chuck are connected with the adaptor through key grooves, a second groove for accommodating the bump and a third groove for accommodating the chuck are radially arranged on the outer circumference of the annular block, the bump is rotationally connected with the second groove, the chuck is rotationally connected with the third groove, the third groove is penetrated through the first groove, a first round hole for accommodating the adaptor is axially arranged on the top surface of the annular block, the adaptor is rotationally connected with the first round hole, the first round hole is penetrated through the second groove and the third groove, contacts are arranged on the end part of the bump and the chuck, the chuck is sleeved on the outer side of the port of the central conductor by rotating the adaptor, and the bump is contacted with the connecting elastic sheet.

As a further scheme of the invention, an external thread is arranged at the position, close to the top end, of the adapter, an internal thread is arranged at the position, close to the top end, of the first round hole, and the adapter is in threaded connection with the top end of the first round hole.

As a further scheme of the invention, the limiting block is in a convex shape, second round holes are formed in flanges on two sides of the limiting block, and second springs are arranged in the second round holes.

As a further scheme of the invention, the packaging block is connected with the annular support in a sliding manner, the packaging block is accommodated in a sliding chute formed in the annular support, a first spring is arranged on one side of the packaging block, which is far away from the adapter, one end of the first spring is fixedly connected with the annular support, and the other end of the first spring is fixedly connected with the packaging block;

the adapter is cylindricly, has seted up the tooth's socket on the outer circumference of adapter, the encapsulation piece is close to adapter one side and is circular-arcly, has seted up the outer circumferential tooth's socket block of cooperation adapter in the arc surface of encapsulation piece.

A method for assembling a microwave ferrite circulator based on a dielectric adjustable film comprises the following steps: the method comprises the following steps:

installing a switching assembly, namely respectively installing the lug and the chuck into the second groove and the third groove, and installing the lug in the second grooves with different heights according to the positions of the annular supports, so that each annular support only corresponds to one lug;

inserting the adapter into the first round hole to enable the lug and the chuck to be clamped on the adapter through the key slot at one time;

sequentially sleeving the three groups of annular supports on the annular blocks, and adjusting the positions of the annular supports to enable the adapter on each group of annular supports to respectively correspond to one first groove;

installing a limiting assembly, installing a second spring into the second spring of the limiting block, and pressing the second spring to install the limiting block from the top of the convex groove;

installing an integrated core body, respectively aligning three ports of a central conductor with a first groove and installing the three ports into an inner hole of an annular block, twisting an adapter piece to enable the top of the adapter piece and a first round hole to be screwed and fixed through threads, at the moment, the port of the central conductor is just inserted into a chuck, and meanwhile, the end part of a lug is attached to a connecting elastic sheet;

and installing an end cover, aligning the wedge to the T-shaped chute on the limiting block respectively, pressing downwards, driving the limiting block to move outwards along the radial direction of the annular block by the wedge, clamping the limiting clamping block into the annular groove of the annular support, axially limiting the annular support, and fixing the end cover and the base by screws.

An assembly device of a microwave ferrite circulator based on a dielectric adjustable film comprises: the assembly workbench and the assembly tool are used for executing the assembly method of the dielectric adjustable film based microwave ferrite circulator to assemble and machine the circulator.

The invention has the beneficial effects that: the three ports of the traditional circulator are externally connected with the switching assembly, the switching assembly and the shell are adjustable in rotation, and meanwhile, the switching head can be turned over at any angle, so that the convenience of connecting the circulator with other functional components in use is improved, the layout of circuits is facilitated, the integration of component assembly is improved, and the volume of the whole equipment is reduced;

meanwhile, the stability and the reliability of line connection are guaranteed, one port can be assembled with the packaging block, the isolator is used, operation is convenient, and switching is simple.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the external structure of the assembly of the present invention;

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

FIG. 3 is a schematic view of the internal structure of the present invention;

FIG. 4 is a schematic structural view of the base of the present invention;

FIG. 5 is a schematic structural diagram of a stop block of the present invention;

FIG. 6 is a schematic view of the construction of the annular seat of the present invention;

FIG. 7 is a schematic structural view of an adapter of the present invention;

FIG. 8 is a cross-sectional view of FIG. 1;

FIG. 9 is a schematic structural view of another operational state of the present invention;

FIG. 10 is a cross-sectional view of FIG. 9;

FIG. 11 is an enlarged schematic view of FIG. 10 at A;

in the figure: an end cover-1, a base-2, an annular block-21, an adapter-3, a data line-31, an annular support-4, a fixed seat-41, a connecting elastic sheet-42, an annular groove-401, an integrated core-5, a connector-501, a central conductor-51, a limiting block-6, a limiting clamping block-61, a second spring-62, a T-shaped chute-601, a second round hole-602, an inclined wedge-7, an adapter-8, a bump-81, a chuck-82, a packaging block-9, a first spring-91, a first groove-201, a convex groove-202, a first round hole 203, a second groove-204, a third groove-205, a second adapter-801, a third adapter-802, a third adapter,

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.

Referring to fig. 1 to 11, in an embodiment of the present invention, a microwave ferrite circulator based on a dielectric tunable thin film adopts a microstrip three-port structure, and includes an end cap 1, a base 2, and an integrated core 5, where the integrated core 5 specifically includes a silicon substrate, a ferrite thick film disposed on the silicon substrate, and a microstrip structure disposed on the ferrite thick film; integrated core 5 is accomodate and is held the intracavity at end cover 1 and the combination of base 2, still includes:

the switching assemblies are arranged in the vertical direction, each switching assembly is connected with one of the ports of the central conductor 51 and independent from one another, the switching assemblies are rotatably connected with the end cover 1, each switching assembly comprises a switching head 3, an annular support 4 and a switching part 8, the switching heads 3 are communicated with the integrated core 5 through the switching parts 8, a fixing seat 41 is arranged on one side of each annular support 4, the switching heads 3 are rotatably connected with the fixing seats 41, the rotating axis of each switching head 3 is perpendicular to the axis of the annular support 4, namely the switching heads 3 can freely turn over any angle in the vertical plane, a packaging block 9 is arranged on one side, close to the axis of the annular support 4, of each switching head 3, and each packaging block 9 is used for packaging the switching heads 3 in a short circuit with the switching heads 3, so that the circulators can be switched;

the limiting assembly is used for limiting the axial movement of the annular support 4 and radially pressing and fixing the annular support 4 to the annular support 4, so that the overall stability of the circulator is ensured. In this embodiment, with the three-port external connection switching subassembly of traditional circulator, it is adjustable to rotate between switching subassembly and the casing, and simultaneously, adapter 3 can overturn arbitrary angle, the convenience of being connected with other functional unit when having improved the circulator and using, the overall arrangement of the circuit of being convenient for and the integration of having improved the part equipment have reduced the volume of whole equipment, guarantee line connection's stability and reliability simultaneously, can also be through assembling one of them port and encapsulation piece 9, thereby play the effect of isolator, high durability and convenient operation, and the switching is simple.

Specifically, as shown in fig. 2 and 4, the annular block 21 is arranged on the base 2, the annular support 4 is sleeved on the annular block 21 and is rotatably connected with the annular block 21, the limiting assembly comprises a limiting block 6, as shown in fig. 5, three groups of limiting fixture blocks 61 are uniformly distributed on the limiting block 6 along the vertical direction, the end portions of the limiting fixture blocks 61 are arc-shaped, an annular groove 401 for accommodating the limiting fixture blocks 61 is formed in the inner annular side of the annular support 4, the limiting fixture blocks 61 are in movable contact with the annular groove 401, the limiting block 6 is accommodated in a convex groove 202 radially formed in the outer circumferential surface of the annular block 21, the limiting block 6 is in sliding connection with the convex groove 202 and radially slides along the annular block 21, that is, after the annular support 4 is installed in place, the limiting block 6 is moved to enable the limiting fixture blocks 61 to be inserted into the annular groove 401, and the annular support 4 can be limited and prevented from being separated.

In some embodiments, in order to facilitate installation and disassembly, the position of the limiting block 6 is adjusted by adopting the following mode, the convex groove 202 is penetrated through the top of the annular block 21, the wedge 7 is arranged above the limiting block 6, the T-shaped chute 601 is arranged on the limiting block 6, the wedge 7 is connected with the T-shaped chute 601 in a sliding manner, the top end of the wedge 7 is fixedly connected with the end cover 1, namely, when the end cover 1 moves up and down, the limiting block 6 is driven to slide horizontally by the wedge fit between the wedge 7 and the limiting block 6, the structure is stable and reliable, and the installation is convenient.

Specifically, as shown in fig. 6 and 11, be equipped with in the annular 401 and connect the shell fragment 42, adapter 3 passes through data line 31 and is connected with connecting the shell fragment 42, is equipped with the shell fragment between connecting the shell fragment 42 and the annular 401 inner wall, connects shell fragment 42 and adaptor 8 and passes through contact swing joint, and the shell fragment makes the stability of laminating between connecting shell fragment 42 and the adaptor 8, connects through this kind of mode, not only is convenient for install, guarantees simultaneously that annular support 4 keeps closely laminating connection still when rotating.

In some embodiments, as shown in fig. 7, the adaptor 8 is in the shape of a round rod, the adaptor 8 is provided with a protrusion 81 and a chuck 82, the protrusion 81 and the chuck 82 are connected with the adaptor 8 through key slots, the annular block 21 is radially provided with a second groove 204 for accommodating the protrusion 81 and a third groove 205 for accommodating the chuck 82 on the outer circumference, the protrusion 81 is rotatably connected with the second groove 204, the chuck 82 is rotatably connected with the third groove 205, the third groove 205 is penetrated through the first groove 201, the annular block 21 is axially provided with a first circular hole 203 for accommodating the adaptor 8 on the top surface, the adaptor 8 is rotatably connected with the first circular hole 203, the first circular hole 203 is penetrated through the second groove 204 and the third groove 205, the end of the protrusion 81 and the chuck 82 are provided with contacts, by rotating the adaptor 8, the chuck 82 is sleeved outside the port 501 of the central conductor 51, and the protrusion 81 is contacted with the connection elastic sheet 42, i.e. the adaptor 8 is contacted with the central conductor 51 through the chuck 82, then, the data is transmitted to the bump 81 through the internal circuit, the bump 81 is in contact with the connecting elastic sheet 42 in a fitting manner, the connecting elastic sheet 42 is connected with the adapter 3 through the data line 31, and the adapter 8 is made of insulating and magnetism-insulating materials, so that interference is reduced. As shown in fig. 9, since the annular supports 4 are stacked, the height of the projections 81 on each adapter 8 is different, and only one projection 81 is provided on each adapter 8, corresponding to the position of the annular support 4, and the positions of the projections 81 in the second adapter 801 and the third adapter 802 correspond to the positions of the annular supports 4 on the second layer and the top layer.

Preferably, an external thread is disposed at a position of the adaptor 8 close to the top end, an internal thread is disposed at a position of the first circular hole 203 close to the top end, and the adaptor 8 is in threaded connection with the top end of the first circular hole 203, so as to ensure the stability of the fitting of the bump 81 and the connecting elastic sheet 42 and the stability of the fitting of the chuck 82 and the central conductor 51.

Specifically, as shown in fig. 4 and 5, the limiting block 6 is in a shape like a Chinese character 'tu', a second round hole 602 is provided on the flange at the two sides of the limiting block 6, a second spring 62 is provided in the second round hole 602, the second spring 62 enables the limiting block 6 to be attached to the inner wall of the convex groove 202 without the action of external force, and the wedge 7 is aligned with the T-shaped chute 601 when the installation is convenient.

Preferably, as shown in fig. 10 and 11, the encapsulation block 9 is slidably connected to the annular support 4, the encapsulation block 9 is received in a sliding slot formed in the annular support 4, a first spring 91 is disposed on a side of the encapsulation block 9 away from the adapter 3, one end of the first spring 91 is fixedly connected to the annular support 4, and the other end of the first spring 91 is fixedly connected to the encapsulation block 9, when the interface of the adapter 3 is aligned with the encapsulation block 9, the encapsulation block 9 is inserted into the interface of the adapter 3 under the elastic force of the first spring 91, as shown in the state shown in fig. 9, at this time, the circulator is switched to the isolator.

Preferably, adapter 3 is cylindric, has seted up the tooth's socket on the outer circumference of adapter 3, and encapsulation piece 9 is close to adapter 3 one side and is circular-arc, has seted up the tooth's socket block that matches the outer circumference of adapter 3 in the arc surface of encapsulation piece 9, makes encapsulation piece 9 and adapter 3 closely block together under the effect of first spring 91, plays spacing effect from adapter 3, prevents its not hard up rotation, has guaranteed the stability of connecting.

installing the adapter assembly, namely installing the lug 81 and the chuck 82 into the second groove 204 and the third groove 205 respectively, wherein the lug 81 is installed in the second grooves 204 with different heights according to the positions of the annular supports 4, so that each annular support 4 only corresponds to one lug 81;

inserting the adaptor 8 into the first circular hole 203 to make the projection 81 and the chuck 82 pass through the keyway once and be clamped on the adaptor 8;

sequentially sleeving the three groups of annular supports 4 on the annular block 21, and adjusting the positions of the annular supports 4 to enable the adapter 3 on each group of annular supports 4 to respectively correspond to one first groove 201;

installing a limiting assembly, installing the second spring 62 of the limiting block 6 into the second round hole 602, and pressing the second spring 62 to install the limiting block 6 into the convex groove 202 from the top;

installing the integrated core body 5, respectively aligning the three ports 501 of the central conductor 51 with the first grooves 201 and installing the three ports into the inner hole of the annular block 21, and twisting the adapter 8 to ensure that the top of the adapter 8 is screwed and fixed with the first round hole 203 through threads, at the moment, the ports 501 of the central conductor 51 are just inserted into the chuck 82, and meanwhile, the end part of the bump 81 is attached to the connecting elastic sheet 42;

installing the end cover, aligning the wedge 7 to the T-shaped chute 601 on the limiting block 6 respectively, pressing downwards, the wedge 7 driving the limiting block 6 to move along the annular block 21 radially towards the outside, so that the limiting clamping block 61 is clamped into the annular groove 401 of the annular support 4, axially limiting the annular support 4, and fixing the end cover 1 and the base 2 through screws.

An assembly device of a microwave ferrite circulator based on a dielectric adjustable film comprises: the assembly method is used for assembling and processing the circulator. The assembling device for realizing the circulator by combining the tools and matching with the common assembly of the clamp and the manipulator belongs to the protection scope of the embodiment.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", etc., indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the method is simple. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

It will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the spirit and scope of the invention, and any equivalents thereto, such as those skilled in the art, are intended to be embraced therein.

Claims

1. The utility model provides a microwave ferrite circulator based on dielectric adjustable film, this circulator adopt microstrip three port structure, includes end cover (1), base (2) and integrated core (5), and the intracavity is held in the appearance of end cover (1) and base (2) combination in integrated core (5), its characterized in that still includes:

three switching assemblies are arranged along the vertical direction, each switching assembly is respectively connected with one port of the central conductor (51), the switching components are mutually independent and are rotationally connected with the end cover (1), any switching component comprises a switching head (3), an annular support (4) and a switching piece (8), the adapter (3) is communicated with the integrated core body (5) through an adapter piece (8), the adapter (3) is arranged on one side of the outer edge of the annular support (4), the adapter (3) is rotatably connected with the annular support (4), the rotating axis of the adapter (3) is vertical to the axis of the annular support (4), a packaging block (9) is arranged on one side of the adapter (3) close to the axis of the annular support (4), the packaging block (9) is used for packaging the adapter connector (3) in a short circuit mode with the adapter connector (3);

the limiting assembly is used for limiting axial movement of the annular support (4) and radially pressing and fixing the annular support (4) on the annular support (4), an annular block (21) is arranged on the base (2), the annular support (4) is sleeved on the annular block (21) and is rotationally connected with the annular block (21), the limiting assembly comprises a limiting block (6), three groups of limiting fixture blocks (61) are uniformly distributed on the limiting block (6) along the vertical direction, an annular groove (401) for accommodating the limiting fixture blocks (61) is formed in the inner annular side of the annular support (4), the limiting block (6) is accommodated in a convex groove (202) formed in the outer circumferential surface of the annular block (21) in the radial direction, and the limiting block (6) is in sliding connection with the convex groove (202) and slides along the radial direction of the annular block (21);

the adapter (8) is in a round bar shape, a convex block (81) and a chuck (82) are arranged on the adapter (8), the convex block (81) and the chuck (82) are connected with the adapter (8) through key slots, a second groove (204) for accommodating the convex block (81) and a third groove (205) for accommodating the chuck (82) are radially formed in the outer circumference of the annular block (21), the convex block (81) is rotationally connected with the second groove (204), the chuck (82) is rotationally connected with the third groove (205), the third groove (205) is penetrated through the first groove (201), a first round hole (203) for accommodating the adapter (8) is axially formed in the top surface of the annular block (21), the adapter (8) is rotationally connected with the first round hole (203), the first round hole (203) is penetrated through the second groove (204) and the third groove (205), contacts are arranged on the end part of the convex block (81) and the chuck (82), the chuck (82) is sleeved outside the port (501) of the central conductor (51) by rotating the adapter (8), and meanwhile, the bump (81) is contacted with the connecting elastic sheet (42);

the packaging block (9) is connected with the annular support (4) in a sliding mode, the packaging block (9) is contained in a sliding groove formed in the annular support (4), a first spring (91) is arranged on one side, away from the adapter (3), of the packaging block (9), one end of the first spring (91) is fixedly connected with the annular support (4), and the other end of the first spring (91) is fixedly connected with the packaging block (9);

adapter (3) are cylindricly, have seted up the tooth's socket on the outer circumference of adapter (3), encapsulation piece (9) are close to adapter (3) one side and are circular-arcly, have seted up the outer circumferential tooth's socket block of cooperation adapter (3) in the arc surface of encapsulation piece (9).

2. The microwave ferrite circulator as claimed in claim 1, wherein the convex groove (202) penetrates through the top of the annular block (21), a wedge (7) is arranged above the limiting block (6), a T-shaped chute (601) is formed in the limiting block (6), the wedge (7) is slidably connected with the T-shaped chute (601), and the top end of the wedge (7) is fixedly connected with the end cap (1).

3. The microwave ferrite circulator as claimed in claim 1, wherein a connection spring (42) is arranged in the ring groove (401), the adapter (3) is connected with the connection spring (42) through a data line (31), a spring is arranged between the connection spring (42) and the inner wall of the ring groove (401), and the connection spring (42) is movably connected with the adaptor (8) through contact.

4. The microwave ferrite circulator as claimed in claim 3, wherein the adaptor (8) is provided with an external thread near the top end, the first circular hole (203) is provided with an internal thread near the top end, and the adaptor (8) is in threaded connection with the top end of the first circular hole (203).

5. The microwave ferrite circulator as claimed in claim 2, wherein the stopper (6) is in a shape of a convex, the flanges at two sides of the stopper (6) are provided with second circular holes (602), and the second circular holes (602) are provided with second springs (62).

6. An assembly method for the dielectric tunable film based microwave ferrite circulator of any of claims 1-5: the method is characterized by comprising the following steps:

installing a switching assembly, namely installing the lug (81) and the chuck (82) into the second groove (204) and the third groove (205) respectively, and installing the lug (81) into the second grooves (204) with different heights according to the positions of the annular supports (4) so that each annular support (4) only corresponds to one lug (81);

inserting the adapter (8) into the first round hole (203) to enable the lug (81) and the chuck (82) to be clamped on the adapter (8) through the key slot at one time;

sequentially sleeving the three groups of annular supports (4) on the annular block (21), and adjusting the positions of the annular supports (4) to enable the adapter (3) on each group of annular supports (4) to respectively correspond to one first groove (201);

installing a limiting assembly, installing a second spring (62) of the limiting block (6) into the second round hole (602), and pressing the second spring (62) to install the limiting block (6) into the convex groove (202) from the top;

installing an integrated core body (5), respectively aligning three ports (501) of a central conductor (51) with a first groove (201) and installing the three ports into an inner hole of an annular block (21), twisting an adapter (8) to enable the top of the adapter (8) to be screwed and fixed with a first round hole (203) through threads, at the moment, the ports (501) of the central conductor (51) are just inserted into a chuck (82), and meanwhile, the end part of a bump (81) is attached to a connecting elastic sheet (42);

the end cover is installed, the inclined wedge (7) is respectively aligned to the T-shaped inclined grooves (601) in the limiting blocks (6) and is pressed downwards, the inclined wedge (7) drives the limiting blocks (6) to move outwards along the radial direction of the annular blocks (21), the limiting clamping blocks (61) are clamped into the annular grooves (401) of the annular support (4), the annular support (4) is limited in the axial direction, and the end cover (1) is fixed with the base (2) through screws.