CN213304314U

CN213304314U - High-power L-band isolator

Info

Publication number: CN213304314U
Application number: CN202022740415.6U
Authority: CN
Inventors: 陈毓东; 张孝良; 王曙光
Original assignee: Chengdu Oula Microwave Components Co ltd
Current assignee: Chengdu Oula Microwave Components Co ltd
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-05-28
Anticipated expiration: 2030-11-24

Abstract

The utility model provides a high-power L-band isolator, which comprises an isolator body, wherein a LOAD port is connected with a water LOAD; the water LOAD includes the water cavity, set up No. two water cavity end caps and a water cavity end cap in the water cavity both sides respectively, set up a plurality of water pipes and the allotment ball more than two at least in the water cavity, the LOAD port is connected with the water cavity, No. two water cavity end caps are provided with the water inlet, No. one water cavity end cap is provided with the delivery port, the water inlet is provided with the water swivel that is used for being connected with outside water source, the delivery port loops through the water injection well choke, nickel plating copper pipe and the cooling water path connection in the matching platform of water swivel and isolator body, the other end and the U type copper union coupling in cooling water path, water pipe one end is connected with No. two water cavity end caps, the other end is. The utility model provides a present isolator lead to the overheated fracture of ferrite easily, isolator life is short, and isolator suitable power capacity is low, needs frequently to change the ferrite, problem that use cost is high.

Description

High-power L-band isolator

Technical Field

The utility model relates to a waveguide field, microwave components and parts field, more specifically relate to a high-power L wave band isolator.

Background

The isolator is a microwave passive device, which has two ports, and utilizes the gyromagnetic effect produced by ferrite material under the action of external DC magnetic field to make the microwave incident on the isolator produce deflection at a certain angle and output from output port, but not output at load port so as to implement unidirectional transmission of microwave signal. Isolators, also known as signal isolators, are important components of microwave systems.

The isolator is also called isolator, and is a device for transmitting electromagnetic wave in one direction, when the electromagnetic wave is transmitted in the forward direction, the power can be fed to the load, the reflected wave from the load is greatly attenuated, and the one-way transmission characteristic can be used for isolating the influence of the load change on the signal source. The existing isolator usually absorbs reflected waves by using ferrite, but the ferrite is easily overheated and even cracks, so that the service life of the ferrite is very short, the ferrite needs to be frequently replaced, the use cost is high, inconvenience is brought to a user, the service life of the isolator is short, and the applicable power capacity of the isolator is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-power L wave band isolator to solve present isolator and utilize the ferrite to absorb the reflection usually, but can lead to the ferrite overheated easily, fracture even, make the life of ferrite very short, need frequently change the ferrite, use cost is high, can bring a great deal of inconvenience and lead to isolator life weak point, the low problem of isolator suitable power capacity for the user.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a high-power L-band isolator comprises an isolator body, wherein the isolator body is provided with three ports, namely an IN port, an OUT port and a LOAD port, the IN port, the OUT port and the LOAD port enable the isolator body to form a Y-shaped junction structure, the IN port and the LOAD port are both provided with N-shaped joints, and the LOAD port is connected with a water LOAD;

the water LOAD comprises a water cavity, a second water cavity plug and a first water cavity plug which are respectively arranged on two sides of the water cavity, a plurality of water pipes arranged in the water cavity and at least more than two allocation balls, a LOAD port is connected with the water cavity, the second water cavity plug is provided with a water inlet, the first water cavity plug is provided with a water outlet, the water inlet is provided with a water joint for being connected with an external water source, the water outlet is connected with a cooling water path in a matching table of the isolator body sequentially through a water nozzle, a nickel-plated copper pipe and the water joint, the other end of the cooling water path is connected with a U-shaped copper pipe, one end of each water pipe is connected with the second water cavity plug, and the other end of each water pipe;

the isolator body includes cavity and cavity down, and the both sides upper portion of going up cavity and cavity down and keeping away from each other all is provided with the magnetic circuit board mount pad, and No. one magnetic circuit board is installed to the magnetic circuit board mount pad, connects through setting up No. two magnetic circuit boards between the upper portion of the magnetic circuit board of both sides, and magnetic circuit board mount pad below has set gradually data plate, magnet steel, iron sheet, match platform and ferrite by outer to interior, and it has a plurality of ferrites to match a surface bonding, and a plurality of ferrites make up into regular hexagon or circular.

Furthermore, the cooling water path is used for cooling the ferrite, and the cooling water path forms a continuous multi-section type winding water path in the matching platform.

Furthermore, a clamping sleeve joint is arranged at the joint of the cooling water path and the U-shaped copper pipe.

Furthermore, a first sealing ring is arranged at the joint of the water pipe and the second water cavity plug, and a first sealing ring is arranged at the joint of the water pipe and the first water cavity plug.

Furthermore, a second sealing ring is arranged at the joint of the water cavity and the second water cavity plug, and a second sealing ring is arranged at the joint of the water cavity and the first water cavity plug.

Further, an N-type connection at the IN port is used for input microwave power.

Further, an N-type connection at the LOAD port is used to reflect microwave power.

Further, the water joint is a ZG1/4 water joint.

Further, the nickel-plated copper pipe is a 135-degree nickel-plated copper pipe.

Further, the water nozzle is an M10 water nozzle.

Preferably, the water pipe is made of tetrafluoroethylene or quartz material.

Preferably, there are three dispensing balls.

Compared with the prior art, the utility model discloses following beneficial effect has: the high-power L-band isolator of the utility model is provided with the water load and the cooling water path, and the water load absorbs the microwave energy from the OUT port, thereby preventing the microwave entering from the OUT port from being transmitted to the microwave source, realizing the single-direction transmission and protecting the microwave source; the cooling water path cools and dissipates heat of the ferrite, namely the heat of the ferrite is taken away, and the ferrite is prevented from being overheated to cause cracking; under the combined action of the water load and the cooling water path, the situation that the isolator cannot normally work due to cracking of the ferrite can be prevented to the greatest extent, the service life of the isolator is prolonged, the applicable power of the isolator is improved, the ferrite does not need to be frequently replaced, and the use cost is low.

Drawings

Fig. 1 is a schematic structural diagram of a high-power L-band isolator according to the present invention.

Fig. 2 is a schematic structural diagram of an isolator body of the high-power L-band isolator of the present invention.

Fig. 3 is a schematic view of a cross-sectional view taken along line a-a in fig. 1.

Fig. 4 is a schematic structural diagram of a water cooling device of a high-power L-band isolator according to the present invention.

Fig. 5 is a schematic structural diagram of a cooling plate of a high-power L-band isolator according to the present invention.

Reference numerals: the structure comprises a lower cavity 1, an upper cavity 2, a first magnetic circuit board 3, a second magnetic circuit board 4, a magnetic circuit board mounting seat 5, a nameplate 6, a ferrite 7, a magnetic steel 8, an iron sheet 9, a first water cavity plug 10, a second water cavity plug 11, a water pipe 12, a first sealing ring 13, an N joint 14, a water joint 15, a sleeve joint 16, a water nozzle 17, a cooling water channel 18, a second sealing ring 19, a U-shaped copper pipe 20, a nickel-plated copper pipe 21, a mixing ball 22, a water inlet 23, a water outlet 24, an IN port 25, an OUT port 26, a LOAD port 27, a water outlet 28, a cooling plate 29 and a cooling pipe 30.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention is shown for illustration purposes, and is not limited to the structure.

Example one

As shown IN fig. 1 and 2, the high-power L-band isolator comprises an isolator body, wherein the isolator body is provided with three ports, namely an IN port 25, an OUT port 26 and a LOAD port 27, the IN port 25, the OUT port 26 and the LOAD port 27 enable the isolator body to form a Y-shaped junction structure, the IN port 25 and the LOAD port 27 are both provided with an N-shaped joint 14, and the LOAD port 27 is connected with a water LOAD;

the water LOAD comprises a water cavity, a second water cavity plug 11 and a first water cavity plug 10 which are respectively arranged on two sides of the water cavity, a plurality of water pipes 12 and at least more than two allocation balls 22 which are arranged in the water cavity, a LOAD port 27 is connected with the water cavity, the second water cavity plug 11 is provided with a water inlet 23, the first water cavity plug 10 is provided with a water outlet 24, the water inlet 23 is provided with a water connector 15 used for being connected with an external water source, the water outlet 24 is connected with a cooling water path 18 in a matching table of the isolator body sequentially through a water nozzle 17, a nickel-plated copper pipe 21 and the water connector 15, the other end of the cooling water path 18 is connected with a U-shaped copper pipe 20, one end of each water pipe 12 is connected with the second water cavity plug 11, and the other end of each water;

the isolator body includes cavity 2 and cavity 1 down, go up cavity 2 and cavity 1 both sides upper portion of keeping away from each other down and all be provided with magnetic circuit board mount pad 5, magnetic circuit board 3 is installed to magnetic circuit board mount pad 5, connect through setting up No. two magnetic circuit boards 4 between the upper portion of the magnetic circuit board of both sides, magnetic circuit board mount pad 5 below has set gradually data plate 6 by outer to interior, magnet steel 8, iron sheet 9, match platform and ferrite 7, match platform surface bonding has 7

ferrites

7, 7 ferrites 7 make up into regular hexagon.

Example two

The cooling water path 18 is used to cool the ferrite 7. The cooling water passage 18 forms a continuous multi-stage winding water passage path in the matching table, and the path of the cooling water passage 18 is as shown in fig. 3. A cutting ferrule joint 16 is arranged at the joint of the cooling water path 18 and the U-shaped copper pipe 20. The U-shaped copper pipe 20 is used to discharge water used for cooling to the outside.

Furthermore, a first sealing ring 13 is arranged at the joint of the water pipe 12 and the second water cavity plug 11, and a first sealing ring 13 is arranged at the joint of the water pipe 12 and the first water cavity plug 10. And a second sealing ring 19 is arranged at the joint of the water cavity and the second water cavity plug 11, and a second sealing ring 19 is arranged at the joint of the water cavity and the first water cavity plug 10.

Preferably, the N-type connector 14 at the IN port 25 is used for input of microwave power. The N-junction 14 at the LOAD port 27 is used to reflect microwave power. The N-type connector 14 is an N-K type connector, and the attenuation degree is 50 dB.

Preferably, the water connection 15 is a ZG1/4 water connection. The nickel-plated copper pipe 21 is a 135 ° nickel-plated copper pipe. The water nozzle 17 is an M10 water nozzle. The water pipe 12 is made of tetrafluoroethylene or quartz material. There are three dispensing balls 22.

EXAMPLE III

The utility model discloses a high-power L wave band isolator is used for connecting between microwave source and load, and the microwave source connects IN port 25, and the load connects OUT port 26.

When microwave is input from the IN port 25 and passes through the Y-shaped junction, the ferrite 7 generates a gyromagnetic effect under the magnetization of the magnetic steel 8, and the microwave is transmitted to the OUT port 26.

When the LOAD is not matched and the reflection is large, microwave energy is fed from the OUT port 26, at the moment, the ferrite 7 generates a gyromagnetic effect under the magnetization of the magnetic steel 8, and the microwave is transmitted to the LOAD port 27. At the LOAD port 27, the water LOAD absorbs the microwave energy from the OUT port 26, thereby preventing the microwave entering from the OUT port 26 from being transmitted to the microwave source, realizing unidirectional transmission and protecting the microwave source.

Wherein, the mixing ball 22 with the diameter of 10-25mm and the height of 10-50mm is adopted to mix the absorption performance of the water load, namely, the isolation of the high-power L-band isolator is matched, and the isolation is matched to be below-20 dB, namely, the matching is completed. The high-power L-band isolator is 300mm in height, 250mm in length and 106.4mm in width.

Further, for cooling the ferrite 7 to the maximum extent, the ferrite 7 is a disk ferrite 7, the internal space in the regular hexagon formed by 7 ferrites 7 is the minimum, the contact area between the ferrite 7 and the matching platform can be maximized, that is, the ferrite 7 can be cooled to the maximum extent by the cooling water path 18, and the design is only applicable under the condition that the microwave energy from the OUT port 26 can be absorbed by the water load, that is, the design of 7 disk ferrites 7 is optimized on the basis of the first embodiment, and if there is no combined design of the water load and the cooling water path 18, the 7 disk ferrites 7 are easily cracked due to uneven heating.

In order to enable the water LOAD to absorb the microwave energy from the OUT port 26 to the maximum extent, as shown in fig. 4 and 5, a water cooling device is arranged in the water cavity and comprises a cooling plate 29 and a plurality of cooling pipes 30, a first water cavity plug 10 is provided with a water outlet 28, the cooling plate 29 is connected with a LOAD port 27, the cooling plate 29 is provided with a plurality of through holes, one end of each cooling pipe 30 is communicated with the through hole, the other end of each cooling pipe 30 is closed and is close to the bottom of the water cavity, the water inlet 23 and the water outlet 28 are both communicated with the water cavity, and the water pipes 12 are staggered with the.

Water enters the water chamber from the water inlet 23 and microwave energy enters the cooling tube 30 from the LOAD port 27 through the through holes in the cooling plate 29, the water being in sufficient contact with the cooling tube 30 in the water chamber to carry away heat, i.e. the water LOAD absorbs the microwave energy from the OUT port 26. The plurality of cooling tubes 30 disperse and absorb the microwave energy, so that the contact area with water is maximized, that is, heat absorption is maximized, thereby reducing the load of the ferrite 7. And the water in the water cavity after absorbing heat is discharged from the water outlet 28, namely, the water for cooling the microwave energy of the LOAD port 27 is separately conveyed with the water for cooling the ferrite 7, so that the cooling effect of the two is maximized.

The above-mentioned embodiments are provided for illustration and not for limitation, and the changes of the examples and the replacement of equivalent elements should be understood as belonging to the scope of the present invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein.

Claims

1. A high-power L-band isolator is characterized by comprising an isolator body, wherein the isolator body is provided with three ports, namely an IN port, an OUT port and a LOAD port, the IN port, the OUT port and the LOAD port enable the isolator body to form a Y-shaped junction structure, the IN port and the LOAD port are both provided with N-shaped joints, and the LOAD port is connected with a water LOAD;

2. The high power L-band isolator of claim 1, wherein cooling water paths are used to cool the ferrite, the cooling water paths forming a continuous multi-segment serpentine water path within the mating platform.

3. The high power L-band isolator of claim 1, wherein a ferrule fitting is provided at the junction of the cooling water path and the U-shaped copper tube.

4. The high-power L-band isolator as claimed in claim 1, wherein a first sealing ring is arranged at the joint of the water pipe and the second water cavity plug, and a first sealing ring is arranged at the joint of the water pipe and the first water cavity plug.

5. The high-power L-band isolator as claimed in claim 1, wherein a second sealing ring is arranged at the joint of the water cavity and the second water cavity plug, and a second sealing ring is arranged at the joint of the water cavity and the first water cavity plug.

6. The high power L-band isolator of claim 1, wherein an N-type connection at the IN port is used for input microwave power.

7. The high power L-band isolator of claim 1, wherein the N-junction at the LOAD port is configured to reflect microwave power.

8. The high power L-band isolator of claim 1, wherein the water connection is a ZG1/4 water connection.

9. The high power L-band isolator of claim 1, wherein the nickel plated copper tube is 135 ° nickel plated copper tube.

10. The high power L-band isolator of claim 1, wherein the water nozzle is an M10 water nozzle.