CN107946703A - A kind of waveguide junction type ferrite switch of high heat conduction medium - Google Patents
A kind of waveguide junction type ferrite switch of high heat conduction medium Download PDFInfo
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- CN107946703A CN107946703A CN201711158583.0A CN201711158583A CN107946703A CN 107946703 A CN107946703 A CN 107946703A CN 201711158583 A CN201711158583 A CN 201711158583A CN 107946703 A CN107946703 A CN 107946703A
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- China
- Prior art keywords
- dieelctric sheet
- ferrite
- heat conduction
- axial
- junction type
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/11—Auxiliary devices for switching or interrupting by ferromagnetic devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/30—Auxiliary devices for compensation of, or protection against, temperature or moisture effects ; for improving power handling capability
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- Non-Reversible Transmitting Devices (AREA)
Abstract
The present invention relates to a kind of waveguide junction type ferrite switch of high heat conduction medium, including body, the side of the body has three ports, and three ports are to body sunken inside and extend to and interconnected form y-shaped waveguide chamber；The center of the y-shaped waveguide chamber is disposed with axial dieelctric sheet A, ferrite and axial dieelctric sheet B, the ferrite from top to bottom has three lug bosses for being respectively directed to three ports, and the end face of each lug boss is provided with radial direction dieelctric sheet；The ferrite is equipped with multiple threading holes, after excitation coil sequentially passes through each threading hole, is pierced by body from the side wall of the y-shaped waveguide chamber and is connected with drive circuit；Axial direction dieelctric sheet A, axial direction dieelctric sheet B and the radial direction dieelctric sheet are made of boron nitride material.The present invention by using high heat conduction, advanced low-k materials at the same time in axial medium and radial direction medium so that ferrite is improved in heat conduction efficiency axially and radially, so as to improve the power capacity of waveguide junction type ferrite switch.
Description
Technical field
The invention belongs to field of communication technology, is related to a kind of ferrite switch, and in particular to a kind of ripple of high heat conduction medium
Lead junction type ferrite switch.
Background technology
The composition of waveguide junction type ferrite switch generally includes：Cavity, ferrite, axial dieelctric sheet, radial direction dieelctric sheet, swash
Encourage coil and drive circuit.When waveguide junction type ferrite switch works under high power conditions, ferrite produces heat due to loss
Amount, temperature rise, and after temperature rises to a certain extent, waveguide junction type ferrite penalty, can even cause height when serious
Power is struck sparks, and therefore, the power capacity size of waveguide junction type ferrite switch and ferritic heat conduction efficiency are closely related.
Ferritic heat is mainly transmitted on cavity by axial dieelctric sheet and radial direction dieelctric sheet this two paths.Axial dieelctric sheet leads to
Frequently with polytetrafluoroethylene (PTFE), its dielectric constant is 2.1, and relatively low dielectric constant is conducive to impedance matching, but thermal conductivity is
0.33W/mK, thermal conductivity is very poor, is unfavorable for ferritic heat dissipation.Radial direction dieelctric sheet generally use aluminium oxide ceramics, thermal conductivity
For 28-30W/mK, but dielectric constant is 9.0, higher dielectric constant cause when carrying out impedance matching its thickness compared with
It is thin, it is small with ferritic contact area, thus heat transfer efficiency is not high.As it can be seen that axially and radially the heat transfer of this two paths is imitated
Rate is not high, seriously constrains the further lifting of waveguide junction type ferrite switch power capacity.
The content of the invention
Present invention aims at a kind of high heat conduction of offer, the waveguide of the axial dieelctric sheet and radial direction dieelctric sheet of low-k
Junction type ferrite switch, solves since the thermal conductivity of axial teflon plate is poor, radial direction potsherd and ferrite contact area
It is small so that the problem of waveguide junction type ferrite switch power capacity is not easy to be lifted.
The present invention is achieved by the following technical solutions：
A kind of waveguide junction type ferrite switch of high heat conduction medium, including body, the side of the body have three ends
Mouthful, three ports to body sunken inside and extend to be interconnected form y-shaped waveguide chamber；
The center of the y-shaped waveguide chamber is disposed with axial dieelctric sheet A, ferrite and axial dieelctric sheet B from top to bottom,
The ferrite has three lug bosses for being respectively directed to three ports, and the side of each lug boss is provided with radial direction medium
Piece；
The ferrite is equipped with multiple threading holes, after excitation coil sequentially passes through each threading hole, from the y-shaped waveguide chamber
Side wall be pierced by body and be connected with drive circuit；
Wherein, axial dieelctric sheet A, axial direction dieelctric sheet B and the radial direction dieelctric sheet are made of boron nitride material.
Further, the lug boss is square structure.
Further, the radial direction dieelctric sheet is arranged on each lug boss side opposite with port.
Further, the radial direction dieelctric sheet is adhesively fixed with lug boss.
Further, the ferritic upper and lower surface is adhesively fixed with axial dieelctric sheet A and axial direction dieelctric sheet B respectively,
The upper and lower surface of the upper surface of the axial direction dieelctric sheet A and the lower surface of axial dieelctric sheet B respectively with y-shaped waveguide chamber is glued
Connect fixation.
Further, the threading hole has three, extends through ferritic each lug boss.
Further, the body is rectangular parallelepiped structure, and three ports are respectively on three sides of body.
The present invention, will by using high heat conduction, advanced low-k materials boron nitride at the same time in axial medium and radial direction medium
The medium heat conduction rate of axial path improves, while the ferrite heat dissipation contact area of radial path is improved 1.5 times, and ferrite exists
Axially and radially the heat conduction efficiency on two paths is significantly improved, so that waveguide junction type ferrite be switched
Power capacity lifted more than 1 times.
Brief description of the drawings
Fig. 1 is the structure diagram of the waveguide junction type ferrite switch of the high heat conduction medium of one embodiment of the invention；
Fig. 2 is the exploded view of the waveguide junction type ferrite switch of the high heat conduction medium shown in Fig. 1.
Description of reference numerals：1-body main body；11-y-shaped waveguide groove；2-ferrite；3-axial direction dieelctric sheet A；4-axis
To dieelctric sheet B；5-radial direction dieelctric sheet A；6-radial direction dieelctric sheet B；7-radial direction dieelctric sheet C；8-excitation coil；9-driving electricity
Road；10-cover board.
Embodiment
Carry out the embodiment that the present invention will be described in detail below with reference to attached drawing, illustrated embodiment is served only for explaining the present invention,
It is not intended to limit the scope of the present invention.
A kind of waveguide junction type ferrite switch of high heat conduction medium, including body, the side of the body have three ends
Mouthful, three ports to body sunken inside and extend to be interconnected form y-shaped waveguide chamber；
In one embodiment, the body can be an entirety, and the y-shaped waveguide chamber is to be processed inside body
Forming, the center of the y-shaped waveguide chamber is disposed with axial dieelctric sheet A3, ferrite 2 and axial dieelctric sheet B4 from top to bottom,
The ferrite 2 has three lug bosses for being respectively directed to three ports, and the side of each lug boss, which is provided with, to be radially situated between
Matter piece；
The ferrite 2 is equipped with multiple threading holes, after excitation coil 8 sequentially passes through each threading hole, from the y-shaped waveguide
The side wall of chamber is pierced by body and is connected with drive circuit 9.
In another embodiment, the body is made of the body main body 1 of lower part and 10 two parts of cover board on top,
Y-shaped waveguide groove 11 is machined with inside the body main body 1, three ports of the y-shaped waveguide groove 11 are located at the side of body main body 1
On face, the y-shaped waveguide groove 11 is engaged the y-shaped waveguide chamber in shaper body with cover board 10；The center of the y-shaped waveguide chamber from
Under to axial dieelctric sheet A3, ferrite 2 and axial dieelctric sheet B4 is above disposed with, the ferrite 2 has three and refers to respectively
To the lug boss of three ports, the side of each lug boss is provided with radial direction dieelctric sheet；
The ferrite 2 is equipped with multiple threading holes, after excitation coil 8 sequentially passes through each threading hole, from the y-shaped waveguide
The side wall of chamber is pierced by body and is connected with drive circuit 9.
In both embodiments, axial direction dieelctric sheet A3, axial direction dieelctric sheet B4 and the radial direction dieelctric sheet use nitrogen
Change boron material to be made.
Specifically, the body main body 1 and cover board 10 can be rectangular parallelepiped structure, or other shapes, such as just
Hexagon structure, three ports are respectively on three sides of cuboid body, or regular hexagonal prism shape body main body 1
On mutual non-conterminous three sides, three ports are square structure, are specifically as follows square or rectangular structure, preferably
Rectangle structure.The y-shaped waveguide groove 11 is is process inside body main body 1, the y-shaped waveguide groove 11 and 10 phase of cover board
The y-shaped waveguide chamber in body is cooperatively formed, three ports have respectively constituted three openends of the y-shaped waveguide chamber.Structure
Into preferably 120 ° of angle between three chambers of the y-shaped waveguide chamber, if because contour structures need, angle is alternatively other angles
Degree.But the angle between three chambers, when being other angles, the electric property of device declines, for example transmission loss is big, frequency band
Width is narrow.It is disposed with axial dieelctric sheet A3, ferrite 2 and axial medium from top to bottom at the center of the y-shaped waveguide chamber
Piece B4, the lower surface bonds of the upper surface of the axial direction dieelctric sheet A3 and the upper surface of y-shaped waveguide chamber cover board 10 in other words are fixed,
The lower surface of the axial direction dieelctric sheet B4 and the lower surface bonds of y-shaped waveguide chamber are fixed, the axial direction dieelctric sheet A3, axial medium
Gluing fixation between piece B4 and ferrite 2.The axial direction dieelctric sheet A3 and axial direction dieelctric sheet B4 is circular configuration, is adhered to iron oxygen
The center of body 2.The ferrite 2 has three lug bosses, and each lug boss is respectively directed to a port, and each
A radial direction dieelctric sheet is adhesively fixed with the lug boss end face opposite with port, is so conducive to carry out impedance with three ports
Matching, good electric property.Each lug boss of the ferrite 2 is equipped with a threading hole, extends through each of ferrite 2
Lug boss, after one end of excitation coil 8 sequentially passes through each threading hole on ferrite 2 according to circumferential direction, both ends are from the Y
The side wall of shape waveguide cavity is pierced by body main body 1 and is connected with the positive and negative anodes of drive circuit 9, when excitation coil 8 and drive circuit 9 are connected
Afterwards, the electric current of generation makes ferrite 2 be magnetized.
The ferrite 2 of the present invention is Y-shaped structure, and the ferrite 2 of the Y-shaped structure can be directly constituted by three lug bosses,
Also can be made of central part and lug boss, the central part is triangle, and the lug boss is outside from three sides of central part
Extension, forms the ferrite 2 of Y-shaped structure together with central part.The lug boss is square structure, is preferably rectangle structure.
The radial direction dieelctric sheet is arranged on each lug boss end face opposite with port, is respectively radial direction dieelctric sheet
A5, radial direction dieelctric sheet B6 and radial direction dieelctric sheet C7.The radial direction dieelctric sheet is rectangular parallelepiped structure, its be adapted with lug boss
End face is adhesively fixed.The present invention sets a radial direction dieelctric sheet, these radial direction media on the end face of each 2 lug boss of ferrite
Piece adds the Filled Dielectrics of y-shaped waveguide chamber so that the microwave cutoff frequency of y-shaped waveguide chamber declines, and can compress y-shaped waveguide chamber
The size in section so that device miniaturization, by adjusting spacer dimension, can cause ferrite 2 to turn with high power Waveguide coaxial
The good microwave matching of swap-in row.
When the waveguide junction type ferrite switch of the present invention works under high power conditions, ferrite 2 produces heat due to loss
Amount, by high heat conduction, axially and radially dieelctric sheet is transmitted on wave-guide cavity wave heat.In order to improve the present invention axially and radially this
The heat conduction efficiency of two paths, axial dieelctric sheet A3, axial dieelctric sheet B4, radial direction dieelctric sheet A5, radial direction dieelctric sheet B6 and footpath
It is made to dieelctric sheet C7 of high heat conduction, advanced low-k materials boron nitride.The thermal conductivity of boron nitride is 27W/mK, about
The heat conduction efficiency of 80 times of polytetrafluoroethylene (PTFE) (0.33W/mK), i.e. axial path improves 80 times.The dielectric constant of boron nitride
For 4.0, about the 44% of ceramics, in the case where impedance matching is roughly the same, its thickness is probably potsherd thickness
1.5 times, i.e., be original 1.5 times with the contact area of ferrite 2, thus the heat conduction efficiency of radial path improves 1.5 times.Therefore
The ferrite switch of the present invention is significantly improved in the heat conduction efficiency axially and radially on two paths, for
For the ferrite switch of waveguide bore BJ100, actual measurement mean power capacity is more than 250W, more than the 100- of traditional approach
120w, mean power Capacity Ratio traditional design lift more than 1 times.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of waveguide junction type ferrite switch of high heat conduction medium, including body, it is characterised in that the side tool of the body
There are three ports, three ports are to body sunken inside and extend to be interconnected and form y-shaped waveguide chamber；
The center of the y-shaped waveguide chamber is disposed with axial dieelctric sheet A, ferrite and axial dieelctric sheet B from top to bottom, described
Ferrite has three lug bosses for being respectively directed to three ports, and the end face of each lug boss is provided with radial direction dieelctric sheet；
The ferrite is equipped with multiple threading holes, after excitation coil sequentially passes through each threading hole, from the side of the y-shaped waveguide chamber
Wall is pierced by body and is connected with drive circuit；
Wherein, axial dieelctric sheet A, axial direction dieelctric sheet B and the radial direction dieelctric sheet are made of boron nitride material.
2. the waveguide junction type ferrite switch of high heat conduction medium according to claim 1, it is characterised in that the lug boss
For square structure.
3. the waveguide junction type ferrite switch of high heat conduction medium according to claim 2, it is characterised in that the radial direction is situated between
Matter piece is arranged on each lug boss end face opposite with port.
4. the waveguide junction type ferrite switch of high heat conduction medium according to claim 3, it is characterised in that the radial direction is situated between
Matter piece is adhesively fixed with lug boss.
5. the waveguide junction type ferrite switch of high heat conduction medium according to claim 1, it is characterised in that the ferrite
Upper and lower surface be adhesively fixed respectively with axial dieelctric sheet A and axial direction dieelctric sheet B, the upper surface of the axial direction dieelctric sheet A and axis
Upper and lower surface to the lower surface of dieelctric sheet B respectively with y-shaped waveguide chamber is adhesively fixed.
6. switched according to the waveguide junction type ferrite of claim 1-5 any one of them high heat conduction media, it is characterised in that institute
Threading hole is stated with three, extends through ferritic each lug boss.
7. switched according to the waveguide junction type ferrite of claim 1-5 any one of them high heat conduction media, it is characterised in that institute
It is rectangular parallelepiped structure to state body, and three ports are respectively on three sides of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158583.0A CN107946703A (en) | 2017-11-20 | 2017-11-20 | A kind of waveguide junction type ferrite switch of high heat conduction medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711158583.0A CN107946703A (en) | 2017-11-20 | 2017-11-20 | A kind of waveguide junction type ferrite switch of high heat conduction medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107946703A true CN107946703A (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711158583.0A Pending CN107946703A (en) | 2017-11-20 | 2017-11-20 | A kind of waveguide junction type ferrite switch of high heat conduction medium |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956535A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band quick switch capable of bearing high average power |
| US20150207196A1 (en) * | 2014-01-21 | 2015-07-23 | Honeywell International Inc. | Waveguide circulator having stepped floor/ceiling and quarter-wave dielectric transformer |
| CN107248605A (en) * | 2017-06-19 | 2017-10-13 | 西安空间无线电技术研究所 | A kind of high-power circulator and its anti-micro discharge design method |
-
2017
- 2017-11-20 CN CN201711158583.0A patent/CN107946703A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150207196A1 (en) * | 2014-01-21 | 2015-07-23 | Honeywell International Inc. | Waveguide circulator having stepped floor/ceiling and quarter-wave dielectric transformer |
| CN103956535A (en) * | 2014-04-01 | 2014-07-30 | 涞水县涞磁凯立特磁业有限公司 | X-band quick switch capable of bearing high average power |
| CN107248605A (en) * | 2017-06-19 | 2017-10-13 | 西安空间无线电技术研究所 | A kind of high-power circulator and its anti-micro discharge design method |
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Application publication date: 20180420 |