CN107248605B - A kind of high-power circulator and its anti-micro discharge design method - Google Patents
A kind of high-power circulator and its anti-micro discharge design method Download PDFInfo
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- CN107248605B CN107248605B CN201710465708.8A CN201710465708A CN107248605B CN 107248605 B CN107248605 B CN 107248605B CN 201710465708 A CN201710465708 A CN 201710465708A CN 107248605 B CN107248605 B CN 107248605B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
- H01P1/383—Junction circulators, e.g. Y-circulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
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Abstract
A kind of high-power circulator, including metal cavity (1), ferrite gyromagnet substrate (2) and medium card slot (3)；Metal cavity (1) includes upper cover, pedestal, and mirror surface symmetric position is fluted in upper cover and pedestal, and upper cover is mounted on the base, and cavity is formed between upper cover and pedestal；Ferrite gyromagnet substrate (2) is located in medium card slot (3)；Medium card slot (3) is mounted in the cavity of metal cavity (1), between upper cover and the groove of pedestal, so that ferrite gyromagnet substrate (2) is adjacent to metal cavity (1).Method of the invention is optimized by preliminary electrical property design first concentrates on by force gyromagnet substrate region for most high field, then in the region, load multilayer concentric medium annulus constitutes dielectric constant with the medium card slot of spatial variations, then the optimization of further progress electrical property and micro discharge simulation optimization, it realizes that micro discharge electron trajectory blocks under the premise of meeting practical electrical property and needing, effectively promotes micro-discharge threshold power.
Description
Technical field
The present invention relates to a kind of circulator and its anti-micro discharge design methods.
Background technique
The high micro discharging risk of spacecraft HIGH-POWERED MICROWAVES component is to influence spacecraft payload long-life, high reliability
Key factor and high-power applications under the maximum single point failure link of satellite.
Traditional micro discharge suppressing method is broadly divided into two classes: physics suppressing method and Chemical Inhibition method.Wherein, physics
Suppressing method, which mainly passes through, increases the raising that metal surface spacing at microwave component maximum field intensity realizes micro-discharge threshold.It is right
For spacecraft microwave component, since its volume and quality are carefully controlled, micro-discharge threshold is improved by increasing physical size
Method there are significant limitations.Meanwhile it can be improved being limited in scope for micro-discharge threshold, volume by increasing physical size
Increase will bring high cost to space application, be impossible approach under many applicable cases.
Chemical Inhibition method is mainly reduced by coating special material, such as A Luoding (Alodine) etc. in metal surface
Metal surface secondary generates, the final inhibition for realizing micro discharge.Such method leads to the generally increase of loss, to micro-
Parts for wave electrical property is affected.
Summary of the invention
The technical problems to be solved by the present invention are: having overcome the deficiencies of the prior art and provide a kind of high-power circulator
And its anti-micro discharge design method, optimized first by preliminary electrical property design and most high field concentrated on by force gyromagnet substrate region,
Then the region load multilayer concentric medium annulus constitute dielectric constant with spatial variations medium card slot, then further into
The optimization of row electrical property and micro discharge simulation optimization, realize the resistance of micro discharge electron trajectory under the premise of meeting actual performance and needing
It is disconnected, effectively promote micro-discharge threshold power.
The technical solution of the invention is as follows: a kind of high-power circulator, including metal cavity, ferrite gyromagnet substrate and
Medium card slot；Metal cavity includes upper cover, pedestal, and mirror surface symmetric position is fluted in upper cover and pedestal, and upper cover is mounted on pedestal
On, cavity is formed between upper cover and pedestal；Ferrite gyromagnet substrate is located in medium card slot；Medium card slot is mounted on metal cavity
Cavity in, between upper cover and the groove of pedestal, so that ferrite gyromagnet substrate is adjacent to metal cavity.
The metal cavity the middle of the base has the metal matching platform of protrusion, and medium card slot is mounted on metal matching platform.
The metal cavity upper cover matches the metal that there is protrusion in platform corresponding position with the metal on metal cavity pedestal
With platform.
The medium card slot includes N number of concentric medium annulus, dielectric cylinder, and N number of medium annulus is sequentially sleeved in medium circle
Outside column, the relative dielectric constant of medium annulus is gradually increased from outermost layer to center, and the relative dielectric constant of dielectric cylinder is greater than N
The relative dielectric constant of a medium annulus；Wherein, N is positive integer.
The ferrite gyromagnet substrate is mounted in medium annulus, positioned at dielectric cylinder one end or is located at dielectric cylinder
Both ends are bonded with metal cavity upper cover or pedestal.
There is the circular positioning groove for blocking medium card slot in the middle part of the metal matching platform, positioning groove depth is little
In 0.5mm.
The material of the medium card slot is monocrystal material, boron nitride, polyimides or ceramics.
A kind of anti-micro discharge design method of high-power circulator, comprises the following steps that
Step 1: the center operating frequency f of given circulatorr, bandwidth of operation BW, each interport isolation, micro discharge power wants
Ask the secondary electron emission characteristic parameter of P, the material of metal cavity and metal cavity, the unit for electrical property parameters of ferrite gyromagnet substrate
And the secondary electron emission characteristic parameter of ferrite gyromagnet substrate；
Step 2: the center operating frequency f of the circulator given according to step 1r, bandwidth of operation BW, each interport isolation
Circulator is obtained in conjunction with the maxwell equation group that description electromagnetic field develops with the unit for electrical property parameters of ferrite gyromagnet substrate
Structure size；
Step 3: establishing the 3-D geometric model of circulator according to the circulator structures size that step 2 determines, going in ring
The 3-D geometric model of device is divided into m grid cell, and the maxwell equation group to develop with description electromagnetic field is determined and gone in ring
Magnetic distribution in device 3-D geometric model at each each grid cell；M is positive integer；
Step 4: determining most high field according to the magnetic distribution in the circulator 3-D geometric model obtained in step 3
Strong position determines the installation site of medium card slot and determines the number of plies N of medium card slot intermediary matter annulus；
Step 5: repeat the structure size of adjustment circulator and build the 3-D geometric model of circulator again, with retouching
The newly-established circulator 3-D geometric model of maxwell equation group counterweight for stating electromagnetic field evolution carries out electromagnetic-field simulation, and ties
Close the material of the metal cavity determined in step 1 and its secondary electricity of secondary electron emission characteristic parameter, ferrite gyromagnet substrate
Sub- emission characteristics parameter, the Lorentz equation of the maxwell equation group to develop with description electromagnetic field and description electron motion
Group calculates the micro discharge power threshold for obtaining circulator, until the center operating frequency in electromagnetic-field simulation result is equal to step
The center operating frequency f given in oner, bandwidth of operation be greater than or equal to step 1 in give bandwidth of operation BW, each port isolation
Degree is less than or equal to each interport isolation given in step 2, and the micro discharge power threshold of circulator is greater than or equal to step 1
In give micro discharge power requirement P.
The unit for electrical property parameters of the ferrite gyromagnet substrate includes relative dielectric constant εr, relative permeability μr, loss angle just
Cut tan δ, line width LW, magnetic saturation tensor MSWith secondary electron emission characteristic parameter, additional magnetic bias direction and size B0；
Maximum secondary electron emission coefficiency δ when the secondary electron emission characteristic parameter includes electronics vertical incidencemax、
δmaxCorresponding electron impact ENERGY Emax, secondary electron yield corresponding minimum electron impact ENERGY E when being 1min。
The structure size of the circulator includes the port width w of metal cavity, cavity height h, ferrite gyromagnet substrate
Radius r1, height h1, the radius r of medium card slot0, height hr, the radius r of positioning groove0, height h0, the half of metal matching platform
Diameter r2, height h2。
The advantages of the present invention over the prior art are that:
(1) circulator of the invention in traditional circulator design by being added medium card slot, so that electronics is transported in vacuum
Dynamic rail mark is blocked, and eliminates one of the necessary condition of electron multiplication movement in micro discharge, anti-micro discharge design is realized, with existing skill
Art is compared, and has the advantages that structure size is smaller, micro discharge power is higher；
(2) method of the invention proposes the medium card slot being made of N number of concentric dielectric ring and its resists micro- put in circulator
Application and optimization method in electricity design change and micro discharge position most easily occur under the premise of electrical property is kept approximately constant
Ferrite gyromagnet substrate and metal cavity combination, then made most by the Optimal Structure Designing to ferrite gyromagnet substrate
Big field strength and most easy region of discharge concentrate on electron movement path and are blocked region, compared with prior art, are not influencing to go in ring
Under the premise of device loss and remaining unit for electrical property parameters, it is successfully realized increasing substantially for the micro-discharge threshold power of circulator.
(3) circulator proposed by the present invention and its anti-micro discharge design method have that small in size, structure is easy to process, micro- puts
Electric threshold power promotes the advantages that significant, while avoiding the risks such as the low pressure discharge as caused by viscose outlet, for boat
Its device high-power circulator has a extensive future.
Detailed description of the invention
Fig. 1 is biplate gyromagnet substrate circulator basic structure of the present invention；
Fig. 2 is monolithic gyromagnet substrate circulator basic structure of the present invention；
Fig. 3 (a) is the parameters of structural dimension of circulator of the invention in section view angle；
Fig. 3 (b) is parameters of structural dimension schematic diagram of the pedestal in depression angle of metal cavity in the present invention；
Fig. 4 is that present media card slot forms structure three-dimensional schematic diagram；
Fig. 5 is that circulator of the present invention with positioning groove optimizes structure.
Specific embodiment
A kind of high-power circulator, including metal cavity 1, ferrite gyromagnet substrate 2 and medium card slot 3；Metal cavity 1 is wrapped
Upper cover, pedestal are included, mirror surface symmetric position is fluted in upper cover and pedestal, and upper cover is mounted on the base, shape between upper cover and pedestal
At cavity；Ferrite gyromagnet substrate 2 is located in medium card slot 3；Medium card slot 3 is mounted in the cavity of metal cavity 1, is located at upper
Between the groove of lid and bottom seat, so that ferrite gyromagnet substrate 2 is adjacent to metal cavity 1.
There is the metal matching platform 5 of protrusion in the middle part of the groove floor of 1 pedestal of metal cavity, medium card slot 3 is mounted on metal
With on platform 5.1 upper cover of metal cavity matches the metal matching that there is protrusion in 5 corresponding position of platform with the metal on 1 pedestal of metal cavity
Platform 5.
Medium card slot 3 includes N number of concentric medium annulus, dielectric cylinder, and N number of medium annulus is sequentially sleeved in dielectric cylinder
Outside, the relative dielectric constant of medium annulus is gradually increased from outermost layer to center, and the relative dielectric constant of dielectric cylinder is greater than N number of
The relative dielectric constant of medium annulus；Wherein, N is positive integer.The material of medium card slot 3 is monocrystal material, boron nitride, polyamides Asia
Amine or ceramics.
As shown in Figure 1 and Figure 2, ferrite gyromagnet substrate 2 is mounted in medium annulus, and quantity is a piece of or two panels, is located at and is situated between
Matter cylinder one end is located at dielectric cylinder both ends, is bonded with 1 upper cover of metal cavity or pedestal.
As shown in figure 5, the circular positioning groove 4 for blocking medium card slot 3 can be processed in the middle part of metal matching platform 5,
4 depth of positioning groove is not more than 0.5mm.
A kind of anti-micro discharge design method of high-power circulator, comprises the following steps that
Step 1: the center operating frequency f of given circulatorr, bandwidth of operation BW, each interport isolation, micro discharge power wants
Ask the secondary electron emission characteristic parameter of P, the material of metal cavity 1 and metal cavity 1, the electrical property of ferrite gyromagnet substrate 2
Parameter and its secondary electron emission characteristic parameter；
The unit for electrical property parameters of the ferrite gyromagnet substrate 2 includes relative dielectric constant εr, relative permeability μr, loss angle
Tangent tan δ, line width LW, magnetic saturation tensor MSWith secondary electron emission characteristic parameter, additional magnetic bias direction and size B0；
Maximum secondary electron emission coefficiency δ when the secondary electron emission characteristic parameter includes electronics vertical incidencemax、
δmaxCorresponding electron impact ENERGY Emax, secondary electron yield corresponding minimum electron impact ENERGY E when being 1min。
Step 2: the center operating frequency f of the circulator given according to step 1r, bandwidth of operation BW, each interport isolation
Circulator is obtained in conjunction with the maxwell equation group that description electromagnetic field develops with the unit for electrical property parameters of ferrite gyromagnet substrate 2
Structure size；
As shown in Fig. 3 (a), Fig. 3 (b), the structure size of the circulator includes port width w, the cavity of metal cavity 1
Height h, the radius r of ferrite gyromagnet substrate 21, height h1, the radius r of medium card slot 30, height hr, the radius of positioning groove 4
r0, height h0, the radius r of metal matching platform 52, height h2。
Step 3: establishing the 3-D geometric model of circulator according to the circulator structures size that step 2 determines, going in ring
The 3-D geometric model of device is divided into m grid cell, and the maxwell equation group to develop with description electromagnetic field is determined and gone in ring
Magnetic distribution in device 3-D geometric model at each each grid cell；M is positive integer；
Step 4: determining most high field according to the magnetic distribution in the circulator 3-D geometric model obtained in step 3
Strong position determines the installation site of medium card slot 3 and determines the number of plies N of medium annulus in medium card slot 3；
Step 5: repeat the structure size of adjustment circulator and build the 3-D geometric model of circulator again, with retouching
The newly-established circulator 3-D geometric model of maxwell equation group counterweight for stating electromagnetic field evolution carries out electromagnetic-field simulation, and ties
Close step 1 in determine metal cavity 1 material and its secondary electron emission characteristic parameter, ferrite gyromagnet substrate 2 it is secondary
Electron emission characteristic parameter, the Lorentz equation of the maxwell equation group to develop with description electromagnetic field and description electron motion
Group calculates the micro discharge power threshold for obtaining circulator, until the center operating frequency in electromagnetic-field simulation result is equal to step
The center operating frequency f given in oner, bandwidth of operation be greater than or equal to step 1 in give bandwidth of operation BW, each port isolation
Degree is less than or equal to each interport isolation given in step 1, and the micro discharge power threshold of circulator is greater than or equal to step 1
In give micro discharge power requirement P.
Embodiment one: high-power Y type junction circulator and its anti-micro discharge design method
As shown in figure 5, the high-power circulator includes metal cavity 1, ferrite gyromagnet substrate 2 and medium card slot 3,
In metal matching platform 5 and positioning groove 4 is processed in metal cavity 1, wherein ferrite gyromagnet substrate 2 is located in medium card slot 3,
Ferrite gyromagnet base is clamped in metal cavity 1 for 2 by medium card slot 3；The upper cover of metal cavity 1 is mounted on the base, upper cover
Cavity is formed between pedestal, cavity includes the central area and three ports of a load ferrite gyromagnet substrate 2, three ends
Mouth is connect with outside line respectively, and when the electromagnetic wave incident of certain frequency is to a port, then the electromagnetic wave is next by what is gone in ring
Port output has certain isolation for third port.
Using the high-power circulator and its anti-micro discharge design method, carries out micro discharge and circulator optimization is inhibited to set
Meter, includes the following steps:
(1) the center operating frequency f of circulator is givenrFor 3.25GHz, bandwidth of operation BWFor 50MHz, each interport isolation
It is 1000W for -25dB, micro discharge power requirement P, the material of metal cavity 1 is silver and its secondary electron emission characteristic parameter, iron
The unit for electrical property parameters and its secondary electron emission characteristic parameter of oxysome gyromagnet substrate 2；
The unit for electrical property parameters of ferrite gyromagnet substrate 2 includes relative dielectric constant εrFor 13, relative permeability μrFor 1, loss
Angle tangent tan δ is 0.009, line width LWFor 2, magnetic saturation tensor MSIt is to be revolved perpendicular to ferrite for 600G, additional magnetic bias direction
Magnetic substrate 2, additional magnetic bias size B0It is 0；
Maximum secondary electronics when the secondary electron emission characteristic parameter of ferrite gyromagnet substrate 2 includes electronics vertical incidence
Emission ratio δmaxMaximum secondary electron emission coefficiency δ when for 2.4, vertical incidencemaxCorresponding ENERGY EmaxFor 300eV, secondary electricity
Minimum corresponds to ENERGY E when sub- emission ratio is 1minFor 30eV；
Maximum secondary electron emission system when the secondary electron emission characteristic parameter of metal cavity 1 includes electronics vertical incidence
Number δmaxFor 2.2, corresponding electron impact ENERGY EmaxCorresponding minimum electron impact when for 165eV, secondary electron yield being 1
ENERGY EminFor 30eV；
(2) the center operating frequency f of circulator is given according to step (1)r, bandwidth of operation BW, each interport isolation and iron oxygen
The unit for electrical property parameters of body gyromagnet substrate 2 determines the structure ruler of circulator in conjunction with the maxwell equation group that description electromagnetic field develops
Very little (Zhang Guorong etc., microwave ferrite material and device, Electronic Industry Press, 1993), the structure size of circulator includes
Port width w, the cavity height h of metal cavity 1, the radius r of ferrite gyromagnet substrate 21, height h1, the radius of medium card slot 3
r0, height hr, the radius r of positioning groove 40, height h0, the radius r of metal matching platform 52, height h2；Wherein, hr=h-h2+h0；
(3) the circulator structures size determined according to step (2), establishes the 3-D geometric model of circulator, by foundation
3-D geometric model resolves into several grid cells, and the maxwell equation group to develop with description electromagnetic field is determined and gone in ring
Magnetic distribution in device 3-D geometric model at each each grid cell；
(4) most high field strong position is determined according to the magnetic distribution in step (3) the circulator 3-D geometric model, really
Determine the installation site of medium card slot 3 and determine the number of plies of medium annulus in medium card slot 3, the medium card slot 3 is located at wire chamber
Between body 1, ferrite gyromagnet substrate 2 is included in medium card slot 3 and makes the one side and metal cavity of ferrite gyromagnet substrate 2
1 fitting；As shown in figure 4, medium card slot 3 includes N number of concentric medium annulus, dielectric cylinder, wherein N=1 in the present embodiment,
The relative dielectric constant of i-th of medium annulus is εri(outermost medium annulus is the 1st medium annulus, is successively compiled to center
Number), εr1=2.1；The relative dielectric constant ε of dielectric cylinder at centerr0=5.5.
(5) structure size of adjustment circulator is repeated, and builds circulator 3-D geometric model again, using business electromagnetism
Simulation software HFSS carries out electricity to the circulator 3-D geometric model with the maxwell equation group that description electromagnetic field develops
Magnetic field simulation makes the center operating frequency in electromagnetic-field simulation result be equal to the central task of the circulator given in step (1)
Frequency fr, bandwidth of operation be greater than or equal to step (1) give bandwidth of operation BW, each interport isolation be less than or equal to step (1)
Given each interport isolation；And material and its secondary electron emission characteristic ginseng for the metal cavity 1 for combining step (1) to determine
The secondary electron emission characteristic parameter of number, ferrite gyromagnet substrate 2 is used using the particle simulation operating room of business software CST
The Lorentz equation group for describing maxwell equation group and description electron motion that electromagnetic field develops, calculates and obtains the micro- of circulator
Discharge power threshold value is 3200W, the micro discharge power requirement P given much larger than step (1).
Realize the anti-micro discharge design of high-power circulator, high-power circulator values of the structural parameters is as shown in table 1；
Using the method for the present invention design high micro-discharge threshold circulator and traditional design circulator unit for electrical property parameters with it is micro-
Discharge threshold comparison is as shown in table 2.
1 high-power circulator values of the structural parameters of table
The comparison of 2 circulator micro discharge optimization design experimental results of table
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.
Claims (9)
1. a kind of high-power circulator, which is characterized in that including metal cavity (1), ferrite gyromagnet substrate (2) and medium card slot
(3)；Metal cavity (1) includes upper cover, pedestal, and mirror surface symmetric position is fluted in upper cover and pedestal, and upper cover is mounted on the base,
Cavity is formed between upper cover and pedestal；Ferrite gyromagnet substrate (2) is located in medium card slot (3)；Medium card slot (3) is mounted on gold
In the cavity for belonging to cavity (1), between upper cover and the groove of pedestal, so that ferrite gyromagnet substrate (2) is adjacent to metal cavity
(1)；The medium card slot (3) includes N number of concentric medium annulus, dielectric cylinder, and N number of medium annulus is sequentially sleeved in dielectric cylinder
Outside, the relative dielectric constant of medium annulus is gradually increased from outermost layer to center, and the relative dielectric constant of dielectric cylinder is greater than N number of
The relative dielectric constant of medium annulus；Wherein, N is positive integer.
2. a kind of high-power circulator according to claim 1, which is characterized in that metal cavity (1) the middle of the base
There is metal matching platform (5) of protrusion, medium card slot (3) is mounted in metal matching platform (5).
3. a kind of high-power circulator according to claim 2, which is characterized in that metal cavity (1) upper cover and gold
Belong to metal matching platform (5) that there is protrusion in metal matching platform (5) corresponding position on cavity (1) pedestal.
4. a kind of high-power circulator according to claim 3, which is characterized in that ferrite gyromagnet substrate (2) peace
In medium annulus, positioned at dielectric cylinder one end or dielectric cylinder both ends are located at, with metal cavity (1) upper cover or pedestal
Fitting.
5. a kind of high-power circulator according to claim 3, which is characterized in that have in the middle part of metal matching platform (5)
For blocking the circular positioning groove (4) of medium card slot (3), positioning groove (4) depth is not more than 0.5mm.
6. a kind of high-power circulator according to claim 1, which is characterized in that the material of the medium card slot (3) is
Monocrystal material, boron nitride, polyimides or ceramics.
7. a kind of anti-micro discharge design method of high-power circulator as described in any claim in claim 1~6,
It is characterized in that, comprises the following steps that
Step 1: the center operating frequency f of given circulatorr, bandwidth of operation BW, each interport isolation, micro discharge power requirement P,
The material of metal cavity (1) and secondary electron emission characteristic parameter, the electrical property of ferrite gyromagnet substrate (2) of metal cavity (1)
The secondary electron emission characteristic parameter of energy parameter and ferrite gyromagnet substrate (2)；
Step 2: the center operating frequency f of the circulator given according to step 1r, bandwidth of operation BW, each interport isolation and iron
The unit for electrical property parameters of oxysome gyromagnet substrate (2) obtains the knot of circulator in conjunction with the maxwell equation group that description electromagnetic field develops
Structure size；
Step 3: the 3-D geometric model of circulator is established, by circulator according to the circulator structures size that step 2 determines
3-D geometric model is divided into m grid cell, and the maxwell equation group to develop with description electromagnetic field determines circulator three
Tie up the magnetic distribution in geometrical model at each grid cell；M is positive integer；
Step 4: determining the strong position of most high field according to the magnetic distribution in the circulator 3-D geometric model obtained in step 3
It sets, determine the installation site of medium card slot (3) and determines the number of plies N of medium annulus in medium card slot (3)；
Step 5: repeating the structure size of adjustment circulator and building the 3-D geometric model of circulator again, with description electricity
The newly-established circulator 3-D geometric model of the maxwell equation group counterweight that magnetic field develops carries out electromagnetic-field simulation, and combines step
In rapid one determine metal cavity (1) material and its secondary electron emission characteristic parameter, ferrite gyromagnet substrate (2) it is secondary
Electron emission characteristic parameter, the Lorentz equation of the maxwell equation group to develop with description electromagnetic field and description electron motion
Group calculates the micro discharge power threshold for obtaining circulator, until the center operating frequency in electromagnetic-field simulation result is equal to step
The center operating frequency f given in oner, bandwidth of operation be greater than or equal to step 1 in give bandwidth of operation BW, each port isolation
Degree is less than or equal to each interport isolation given in step 2, and the micro discharge power threshold of circulator is greater than or equal to step 1
In give micro discharge power requirement P.
8. a kind of anti-micro discharge design method of high-power circulator according to claim 7, it is characterised in that: the iron
The unit for electrical property parameters of oxysome gyromagnet substrate (2) includes relative dielectric constant εr, relative permeability μr, losstangenttanδ, line width
LW, magnetic saturation tensor MSWith secondary electron emission characteristic parameter, additional magnetic bias direction and size B0；
Maximum secondary electron emission coefficiency δ when the secondary electron emission characteristic parameter includes electronics vertical incidencemax、δmaxIt is right
The electron impact ENERGY E answeredmax, secondary electron yield corresponding minimum electron impact ENERGY E when being 1min。
9. a kind of anti-micro discharge design method of high-power circulator according to claim 8, it is characterised in that: the ring
The structure size of row device includes the port width w of metal cavity (1), cavity height h, the radius r of ferrite gyromagnet substrate (2)1、
Height h1, the radius r of medium card slot (3)0, height hr, the radius r of positioning groove (4)0, height h0, the half of metal matching platform (5)
Diameter r2, height h2。
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| CN116315546B (en) * | 2022-12-12 | 2024-05-14 | 西安空间无线电技术研究所 | Design method of surface microprotrusion high-power ferrite circulator |
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| US4205281A (en) * | 1975-05-10 | 1980-05-27 | Tsukasa Nagao | Ferrite composite circulator |
| CN1146643A (en) * | 1995-09-25 | 1997-04-02 | 东南大学 | Milimeter wave double high-order mode double-frequency waveguide Y junction circulator |
| CN202333102U (en) * | 2011-11-03 | 2012-07-11 | 成都信息工程学院 | X-waveband high-power waveguide junction circulator |
| CN103515681A (en) * | 2012-06-25 | 2014-01-15 | 中国航天科工集团第二研究院二十三所 | Rectangular waveguide junction circulator with one piece of ferrite |
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2017
- 2017-06-19 CN CN201710465708.8A patent/CN107248605B/en active Active
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