CN109888443A - A kind of microband paste filter - Google Patents
A kind of microband paste filter Download PDFInfo
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- CN109888443A CN109888443A CN201910280518.8A CN201910280518A CN109888443A CN 109888443 A CN109888443 A CN 109888443A CN 201910280518 A CN201910280518 A CN 201910280518A CN 109888443 A CN109888443 A CN 109888443A
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Abstract
The present invention relates to a kind of filter, in particular to a kind of microband paste filter.It includes filter cavity, outer housing and inner housing, ventilation pipe is wherein equipped in the outer housing, heat dissipating layer is equipped in the inner housing, the heat dissipating layer inner surface is equipped with heat-sink shell, the two sides of the outer housing are set there are two fixed cavity, the fixed cavity is fixedly arranged above microband paste, the gas disengaging for being used to control there are two gas valve in ventilation pipe is set below the fixed cavity, it is fluted among the fixed cavity and the filter cavity, the logical spool of connection filtering cavity and microband paste is equipped in the groove, the filter cavity bottom is additionally provided with pedestal.Filter construction provided by the invention is simple, using heat-sink shell, heat dissipating layer and a variety of method combination heat dissipations of snorkel, can greatly enhance the heat dissipation performance of filter.
Description
Technical field
The present invention relates to a kind of filter, in particular to a kind of microband paste filter.
Background technique
Filter is a kind of by the useful signal RF device for passing through, decaying as far as possible to garbage signal as undamped as possible
Part；The general signal transmitting and receiving device or circuit part for being set to communication equipment, to realize the selection index system of communication device signal.It is logical
Often, filter is mainly made of filter cavity and cover board, multiple resonant rods is equipped in filter cavity body, tuning screw one end is worn
Transparent cover plate is opposite with the resonant rod, adjusts the distance between tuning screw and resonant rod by adjusting tool to reach required
RF index.
Microstrip filter is a kind of device for separating different frequency microwave signal.Its main function is to inhibit to be not required to
The signal wanted prevents it from only allowing the signal of needs to pass through by filter.In microwave circuit system, the performance of filter
Have a great impact to the performance indicator of circuit, therefore a filter with high performance, has for microwave circuit system
Critically important meaning.Microstrip circuit has many advantages, such as small in size, light-weight, bandwidth, in recent years in microwave circuit system
It is widely used, wherein making filter with micro-strip is one of main application.
Since the exact requirements selected frequency and filter itself are there are due to temperature drift etc., often needed in work
Guarantee that the temperature in cavity body filter cannot be excessively high, and cavity body filter itself has certain operating power, therefore, one
In a little radio frequency operation units, such as Remote Radio Unit (Radio Remote Unit, RRU), it is often used the cavity with radiator structure
Filter, the cavity body filter with radiator structure is in order to meet the needs that cavity body filter itself radiates and by radiating shell and chamber
The equipment of being made of one of fluid filter.The heat-absorbing material that existing filter generallys use is sheet metal, and heat sink material is most of
For graphite thermal layer, ceramic heat-dissipating layer or copper heat dissipating layer, these materials although thermal coefficient with higher, but thermal diffusivity
Can and the coefficient of expansion when conduct heat it is higher, therefore in order to make substrate, circuit and module etc. be easy high thermalization partly
Conductor module normally works, other than high-fire resistance, it is desirable that material has the higher of preferable thermal diffusivity or low heat expansion
Function, therefore sight is increasingly turned to the thermosetting resin based composites with smaller thermal expansivity by people.
And for the thermosetting resin based composites that needs use under high temperature resistant environment, the resistance to height of matrix resin
Warm nature can determine the high temperature resistance of polymer matrix composite.Epoxy resin because it is good with adhesive strength, shrinking percentage is low,
The features such as electrical insulating property is good, low thermal expansion, and it is applied to high temperature protection Material Field, however epoxy resin is but because of heat transfer energy
The disadvantages of power is bad, matter is crisp and thermal diffusivity is poor can not really be applied to heat conducting material field.
Therefore, develop a kind of high temperature resistant, heat conductivity is good and dilatancy is low composition epoxy resin for filter more
Absorb heat and radiate well be always the industry research hotspot.
Summary of the invention
In order to solve the defects of prior art, the present invention provides a kind of microband paste filters.
A kind of microband paste filter provided by the invention, including filter cavity, outer housing and inner housing, wherein described
It is equipped with ventilation pipe in outer housing, heat dissipating layer is equipped in the inner housing, the heat dissipating layer inner surface is equipped with heat-sink shell, described outer
The two sides of shell are set there are two fixed cavity, and the fixed cavity is fixedly arranged above microband paste, are set below the fixed cavity
There are two gas valves to be used to control the gas disengaging in ventilation pipe, has among the fixed cavity and the filter cavity
Groove, the interior logical spool for being equipped with connection filtering cavity and microband paste of the groove, the filter cavity bottom is additionally provided with bottom
Seat.
Preferably, the heat-sink shell and heat dissipating layer are formed using same material.
Preferably, the material of microband paste is metal material.
It is further preferred that the heat-sink shell and heat dissipating layer material therefor are alumina modified epoxide resin material.
It is further preferred that being passed through nitrogen or carbon dioxide in the snorkel.
It is further preferred that the specific system of epoxide resin material alumina modified used in the heat-sink shell and heat dissipating layer
Make method are as follows:
S1. pre-treatment aluminium oxide:
(1) it weighs 5g alumina nano powder to be contained in crucible, is put into Muffle furnace calcining, 600 are to slowly warm up in 1h
DEG C, keeping temperature 1h again later, natural cooling after taking-up is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol,
It is put into 90 DEG C of baking ovens and dries after filtering, be sealed；
(2) it weighs 1g cerous nitrate (III) hexahydrate and 0.8g polyvinylpyrrolidone is added to 100mL deionized water
In, it is placed on magnetic stirring apparatus, magnetic agitation is until the step of being completely dissolved, 0.5g is added later (1) is processed at room temperature
Aluminium oxide, continue stir 30min, be subsequently poured into ptfe autoclave close after, reaction kettle is put into baking oven, if
Setting oven temperature is 150 DEG C of reaction 12h, is taken out after reaction, and filtering is cooled to room temperature, and collects solids；
(3) solids for collecting step (2) is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol, filtering,
Drying in 90 DEG C of baking ovens is put into be sealed product to get aluminium oxide pre-treatment object；
S2. synthesis gas gel ball
A. object, 10~100mL water, 0.01~0.03mol are handled before aluminium oxide made from 2g step S1 is added in beaker
Aluminum nitride nanometer powder, chelating agent are put on magnetic stirring apparatus and are stirred at room temperature, obtain mixed liquor；
B. production dry ice-propanone bath: first a small amount of dry ice is added into Dewar bottle, wait bottle bodies be cooled to temperature be it is subzero after,
It is slowly added at acetone to bottle body 1/2, continuously adds dry ice, until temperature is reduced to -30 DEG C hereinafter, and the non-shape of liquid in bottle at this time
At it is gelatin, can flow freely；
C. the syringe needle for being 100~5000 microns by diameter with the speed of 10 seconds every drops by mixed liquor obtained in step a,
It instills in the bath of dry ice-propanone made from step b, drop can gradually freeze after touching dry ice-propanone bath and obtain ice gel
Ball sinks to bottom of bottle；
D. ice gel ball made from step c is collected, is put into vacuum oven and is carried out under conditions of 50KPa, 40 DEG C very
Sky is dry to thaw, and obtains airsetting glueballs precursor；
E. 12 will be impregnated in the airsetting glueballs precursor investment dehydrated alcohol obtained after step d processing~for 24 hours, and more every 6h
A dehydrated alcohol is changed, is put into drying box later and is drying to obtain airsetting glueballs for 90 DEG C；
S3. 13.6g epoxy resin is taken, and the airsetting glueballs of 1.5g isopropanol and 11.4g step S2 preparation is added, first
Ultrasonic disperse 30min, then uniform liquid is obtained after stirring 30min on blender, 1.5g curing agent is added, is put into after injection molding
10min in vacuum oven, keeps 60 DEG C of solidification 30min later, demoulding, be placed in drying box under the conditions of 90 DEG C drying to get
Product.
The chelating agent is ethyl acetoacetate or acetylacetone,2,4-pentanedione；
The particle diameter of the alumina nano powder is 20~100nm；The particle diameter of the aluminum nitride nanometer powder is
20~100nm.
The invention has the benefit that
Filter construction provided by the invention is simple, combines and dissipates using heat-sink shell, heat dissipating layer and a variety of methods of snorkel
Heat can greatly enhance the heat dissipation performance of filter.
The method that the present invention uses aluminium oxide to be modified epoxy resin, to improve the high temperature resistant of epoxy resin, heat passes
The property led makes it be more applicable for heat absorption and heat sink material as filter.Filter heat-sink shell of the invention and heat dissipating layer make
Be same material it is alumina modified epoxy resin preparation, using same material have preferably bonding amalgamation, make be
System combination is even closer, which has the advantages that high temperature resistant, conduct heat fast, rapid heat dissipation.
Heat absorption and radiator due to filter is due to inevitably absorbing some microwaves when work, over time
The performance that heat absorption and heat sink material can be largely effected on afterwards causes material various aspects ability to decline, therefore in preceding processing aluminium oxide
It joined cerous nitrate (III) hexahydrate, the nano-cerium oxide generated enable uniformly to be wrapped in Membranes On Alumina Particles Surface, increase
The strong capability of resistance to radiation of material, and the cerium oxide because of generation is tightly combined with aluminium oxide, keeps the durability of integral material also big
Big enhancing.
The airsetting glueballs specific surface that the heat-sink shell and heat dissipating layer that the present invention uses are fabricated in synthesis using Heat Conduction Material
Product can reach 267.3m2/g, thus can it is compound with epoxy resin after contact even closer, make heat be easier to conduct, and add
Having added a small amount of nano aluminum nitride is the capacity of heat transmission in order to enhance integral material, and nano aluminum nitride additive amount is aluminium oxide pre-treatment
Amount of substance 30% or so when, the capacity of heat transmission is not only substantially improved also and will not influence the mobility of material reactant.Using dry
It, can be by moment when being contacted using the drop and dry ice-propanone of instillation there are the huge temperature difference, drop and liquid level when ice-acetone bath
It absorbs heat and then gradually becomes ice hockey, therefore be absorbed heat during ice hockey gradually falls to bottom of bottle to revolve automatically
Turn, the molding of ice hockey can not only be promoted, and inside also rotates with substance therein by equably to ice hockey when rotated
Freeze.Since the temperature more low viscosity of dry ice-propanone bath is bigger, can be made by the temperature of control dry ice-propanone liquid
The viscosity-modifying of liquid controls the speed of droplet formation landed and rotated in a liquid in ice hockey, to control balling-up size
And uniformity coefficient is to reach requirement.
While what the present invention used is arranged in the thermal coefficient for improving material, the contact area of heat transmitting is also increased,
Further increase thermally conductive and radiating efficiency.In synthesis heat dissipation and heat absorption finished-product material, a small amount of isopropanol is added can not only
Keep the dispersion of the gentle gel ball of resin more uniform, the volatilization of isopropanol can be such that product generates tiny in finally drying product
Stomata, such product is contacted by stomata with ambient atmos at internal high temperature when in use can be rapidly performed by heat dissipation, and
It invents while being also provided with ventilation pipe and being passed through gas, the circulation of entire cooling system can be made to increase in conjunction with stomata
Add, achieves the object of the present invention heat dissipation also more rapidly, finally.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the structural schematic diagram of microband paste filter of the present invention.
Wherein: filter cavity 1, ventilation pipe 2, heat dissipating layer 3, heat-sink shell 4, gas valve 5, patch 6, round tablet 7,
Micro-strip input line 8, pedestal 9, shell 10, inner casing 11 lead to spool 12, groove 101, fixed cavity 201.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device and method being described in detail in claims, some aspects of the invention are consistent.
In the description of the present application, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
Fig. 1 shows a kind of microband paste filter that embodiments herein is related to, as shown in Figure 1,
Including filter cavity, outer housing and inner housing, wherein being equipped with ventilation pipe, the inner housing in the outer housing
Interior to be equipped with heat dissipating layer, the heat dissipating layer inner surface is equipped with heat-sink shell, and the two sides of the outer housing are set there are two fixed cavity, described
Fixed cavity is fixedly arranged above microband paste, sets below the fixed cavity and is used to control in ventilation pipe there are two gas valve
Gas disengaging, it is fluted among the fixed cavity and the filter cavity, connection is equipped in the groove and filters cavity
With the logical spool of microband paste, the filter cavity bottom is additionally provided with pedestal.
Including filter cavity 1, outer housing 10 and inner housing 11, ventilation pipe 2, inner housing are wherein equipped in outer housing 10
Heat dissipating layer 3 is equipped in 11；Heat-sink shell 4 is equipped with inside heat dissipating layer 3, the two sides of outer housing 10 are set there are two fixed cavity 201, fixed
Cavity 201 is fixedly arranged above microband paste 6, sets below fixed cavity 201 and is used to control ventilation pipe 2 there are two gas valve 5
Interior gas disengaging, 1 centre fluted 101 of fixed cavity 201 and filter cavity, groove 101 is interior to be equipped with connection filtering cavity 1
With the logical spool 12 of microband paste 6,1 bottom of filter cavity is equipped with pedestal 9.
Further, heat-sink shell 4 and heat dissipating layer 3 are formed using same material, specially alumina modified epoxy resin
Material；The material of microband paste 6 is metal material；It is passed through nitrogen in ventilation pipe 2 or carbon dioxide is greatly improved heat dissipation effect
Fruit.
Further, heat-sink shell 4 is set as multiple bulge-structures, heat dissipating layer 3 with a thickness of 5~10mm.
Further, in the present embodiment, epoxide resin material alumina modified used in heat-sink shell 4 and heat dissipating layer 3
Specific production method are as follows:
S1. pre-treatment aluminium oxide:
(1) it weighs 5g alumina nano powder to be contained in crucible, is put into Muffle furnace calcining, 600 are to slowly warm up in 1h
DEG C, keeping temperature 1h again later, natural cooling after taking-up is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol,
It is put into 90 DEG C of baking ovens and dries after filtering, be sealed；
(2) it weighs 1g cerous nitrate (III) hexahydrate and 0.8g polyvinylpyrrolidone is added to 100mL deionized water
In, it is placed on magnetic stirring apparatus, magnetic agitation is until the step of being completely dissolved, 0.5g is added later (1) is processed at room temperature
Aluminium oxide, continue stir 30min, be subsequently poured into ptfe autoclave close after, reaction kettle is put into baking oven, if
Setting oven temperature is 150 DEG C of reaction 12h, is taken out after reaction, and filtering is cooled to room temperature, and collects solids；
(3) solids for collecting step (2) is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol, filtering,
Drying in 90 DEG C of baking ovens is put into be sealed product to get aluminium oxide pre-treatment object；
S2. synthesis gas gel ball:
A. object, 10~100mL water, 0.01~0.03mol are handled before aluminium oxide made from 2g step S1 is added in beaker
Aluminum nitride nanometer powder, chelating agent are put on magnetic stirring apparatus and are stirred at room temperature, obtain mixed liquor；
B. production dry ice-propanone bath: first a small amount of dry ice is added into Dewar bottle, wait bottle bodies be cooled to temperature be it is subzero after,
It is slowly added at acetone to bottle body 1/2, continuously adds dry ice, until temperature is reduced to -30 DEG C hereinafter, and the non-shape of liquid in bottle at this time
At it is gelatin, can flow freely；
C. the syringe needle for being 100~5000 microns by diameter with the speed of 10 seconds every drops by mixed liquor obtained in step a,
It instills in the bath of dry ice-propanone made from step b, drop can gradually freeze after touching dry ice-propanone bath and obtain ice gel
Ball sinks to bottom of bottle；
D. ice gel ball made from step c is collected, is put into vacuum oven and is carried out under conditions of 50KPa, 40 DEG C very
Sky is dry to thaw, and obtains airsetting glueballs precursor；
E. 12 will be impregnated in the airsetting glueballs precursor investment dehydrated alcohol obtained after step d processing~for 24 hours, and more every 6h
A dehydrated alcohol is changed, is put into drying box later and is drying to obtain airsetting glueballs for 90 DEG C；
S3. 13.6g epoxy resin is taken, and the airsetting glueballs of 1.5g isopropanol and 11.4g step S2 preparation is added, first
Ultrasonic disperse 30min, then uniform liquid is obtained after stirring 30min on blender, 1.5g curing agent is added, is put into after injection molding
10min in vacuum oven, keeps 60 DEG C of solidification 30min later, demoulding, be placed in drying box under the conditions of 90 DEG C drying to get
Product.
Wherein, above-mentioned chelating agent is ethyl acetoacetate or acetylacetone,2,4-pentanedione；The particle diameter of alumina nano powder be 20~
100nm；The particle diameter of aluminum nitride nanometer powder is 20~100nm.
To the high temperature resistance, high thermal conductivity and mechanicalness of the filter heat-sink shell and heat dissipating layer heat-conductive composite material
Can be carried out experimental test, respectively using graphite material, ceramic material, copper material be made into heat-sink shell and heat dissipating layer and the present invention into
Row comparison, the results are shown in Table 1.
The performance comparison of 1 four kinds of materials of table
Can be seen that the thermally conductive composite material of epoxy resin alumina modified used in the present invention from the end value of table 1 has
All there is high temperature resistance with other three kinds of materials, but thermal expansion coefficient is but more much lower than other three kinds, explanation compares
Other three kinds of materials, the present invention used in Heat Conduction Material can achieve the effect that preferably at a high temperature of prevent deformation.Although graphite material
Expect ceramic material and copper material tensile strength with higher, but after certain radiative aging, their stretching retains
Rate and reserved elongation at break are all lower than material therefor of the present invention, illustrate that material therefor of the present invention has better radiation hardness
Property and resistance to ag(e)ing.
Through detecting, the heat-sink shell and heat dissipating layer material thermal conductivity that filter of the present invention uses are up to 2.32W/m
K is higher by 2 times than traditional alumina composite epoxide resin material, it was demonstrated that relative to current material, Heat Conduction Material used in the present invention
It is following that the multiple thermal cycle in certain temperature range is carried out to it with faster thermally conductive and heat dissipation effect, record its thermally conductive system
Several variations, as a result as shown in table 2 below:
The Heat Conduction Material high temperature circulation thermal coefficient of the present invention of table 2 changes (unit: W/mK)
As shown in Table 2, either when temperature change is 25~150 DEG C or 25~200 DEG C, Circularly liftable temperature 50
Secondary, the variation of thermal coefficient is smaller, no more than the 5% of total thermal coefficient, illustrates that heat-conductive composite material used in the present invention exists
25~200 DEG C of temperature ranges have good thermal stability.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (7)
1. a kind of microband paste filter, including filter cavity, outer housing and inner housing, wherein being equipped in the outer housing logical
Feed channel, the inner housing is interior to be equipped with heat dissipating layer, and the heat dissipating layer inner surface is equipped with heat-sink shell, and the two sides of the outer housing are equipped with
Two fixed cavities, the fixed cavity are fixedly arranged above microband paste, set that there are two gas valves below the fixed cavity
For controlling the disengaging of the gas in ventilation pipe, fluted, the groove among the fixed cavity and the filter cavity
The interior logical spool for being equipped with connection filtering cavity and microband paste, the filter cavity bottom is additionally provided with pedestal.
2. a kind of microband paste filter according to claim 1, which is characterized in that the heat-sink shell and heat dissipating layer use
Same material composition, the material of the microband paste are metal material.
3. a kind of microband paste filter according to claim 2, which is characterized in that used in the heat-sink shell and heat dissipating layer
Material is alumina modified epoxide resin material.
4. a kind of microband paste filter according to claim 3, which is characterized in that used in the heat-sink shell and heat dissipating layer
The specific production method of alumina modified epoxide resin material are as follows:
S1. pre-treatment aluminium oxide:
(1) it weighs 5g alumina nano powder to be contained in crucible, is put into Muffle furnace calcining, 600 DEG C are to slowly warm up in 1h, it
Keep temperature 1h again afterwards, natural cooling after taking-up is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol, filtering
After be put into 90 DEG C of baking ovens and dry, be sealed；
(2) it weighs 1g cerous nitrate (III) hexahydrate and 0.8g polyvinylpyrrolidone is added in 100mL deionized water, put
It is placed on magnetic stirring apparatus, magnetic agitation is until the step of being completely dissolved, 0.5g is added later (1) processed oxidation at room temperature
Aluminium continues to stir 30min, is subsequently poured into after closing in ptfe autoclave, reaction kettle is put into baking oven, baking oven is arranged
Temperature is 150 DEG C of reaction 12h, is taken out after reaction, and filtering is cooled to room temperature, and collects solids；
(3) solids for collecting step (2) is first rinsed 3 times with deionized water, then is rinsed 3 times with dehydrated alcohol, and filtering is put into
Product is sealed by drying in 90 DEG C of baking ovens to get aluminium oxide pre-treatment object；
S2. synthesis gas gel ball
A. object, 10~100mL water, 0.01~0.03mol nitridation are handled before aluminium oxide made from 2g step S1 is added in beaker
Aluminum nano-powder, chelating agent are put on magnetic stirring apparatus and are stirred at room temperature, obtain mixed liquor；
B. production dry ice-propanone bath: first a small amount of dry ice is added into Dewar bottle, wait bottle bodies be cooled to temperature be it is subzero after, slowly
It is added at acetone to bottle body 1/2, continuously adds dry ice, until temperature is reduced to -30 DEG C hereinafter, and the not formed glue of liquid in bottle at this time
Freeze shape, can flow freely；
C. the syringe needle for being 100~5000 μm by diameter with the speed of 10 seconds every drops by mixed liquor obtained in step a instills step
In dry ice-propanone bath made from rapid b, drop, which can gradually freeze after touching dry ice-propanone bath and obtain ice gel ball, to be sunk to
Bottom of bottle；
D. ice gel ball made from step c is collected, being put into vacuum oven, that vacuum is carried out under conditions of 50KPa, 40 DEG C is dry
Dry defrosting obtains airsetting glueballs precursor；
E. will step d processing after obtain airsetting glueballs precursor investment dehydrated alcohol in impregnate 12~for 24 hours, and every 6h replace one
Secondary dehydrated alcohol is put into drying box later and is drying to obtain airsetting glueballs for 90 DEG C；
S3. 13.6g epoxy resin is taken, and the airsetting glueballs of 1.5g isopropanol and 11.4g step S2 preparation is added, first ultrasound
Disperse 30min, then obtain uniform liquid after stirring 30min on blender, 1.5g curing agent is added, is put into vacuum after injection molding
10min in drying box, keeps 60 DEG C of solidification 30min later, and demoulding is placed in drying box under the conditions of 90 DEG C and dries to get product.
5. a kind of microband paste filter according to claim 4, which is characterized in that the chelating agent is acetoacetate second
Ester or acetylacetone,2,4-pentanedione.
6. a kind of microband paste filter according to claim 4, which is characterized in that the particle of the alumina nano powder
Diameter is 20~100nm；The particle diameter of the aluminum nitride nanometer powder is 20~100nm.
7. a kind of microband paste filter according to claim 1, which is characterized in that the gas being passed through in the snorkel
For one or both of nitrogen and carbon dioxide.
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| CN201910280518.8A CN109888443B (en) | 2019-04-09 | 2019-04-09 | Microstrip patch filter |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444772A (en) * | 2000-07-31 | 2003-09-24 | 勒克西姆公司 | Plasma lamp with dielectric waveguide |
| CN103059576A (en) * | 2012-12-30 | 2013-04-24 | 深圳市鸿富诚屏蔽材料有限公司 | High-heat-conductivity flexible silica gel gasket and preparation method thereof |
| WO2014071721A1 (en) * | 2012-11-08 | 2014-05-15 | 华为技术有限公司 | Filter, receiver, transmitter and transceiver |
| JP2014143517A (en) * | 2013-01-23 | 2014-08-07 | Nippon Hoso Kyokai <Nhk> | High frequency filter |
| CN204179187U (en) * | 2014-11-21 | 2015-02-25 | 江苏特兴通讯科技有限公司 | The fin of descending cavity body filter is suppressed for GSM |
| JP2015171004A (en) * | 2014-03-07 | 2015-09-28 | 古河電気工業株式会社 | High frequency module |
| CN106299563A (en) * | 2016-08-24 | 2017-01-04 | 苏州优浦精密铸造有限公司 | A kind of assembling casing of filter with heat sinking function |
| CN107151146A (en) * | 2017-06-15 | 2017-09-12 | 铜陵安博电路板有限公司 | It is a kind of for PCB enhanced alumina-based ceramic of high heat conduction type Zirconium oxide fibre CNT and preparation method thereof |
| CN206506815U (en) * | 2017-01-17 | 2017-09-19 | 安科瑞电气股份有限公司 | A kind of good modular active filter of thermal diffusivity |
| EP3240100A1 (en) * | 2016-04-28 | 2017-11-01 | Alcatel Lucent | A radio frequency filter comprising a chamber, and a method of filtering |
| CN206674415U (en) * | 2017-04-01 | 2017-11-24 | 邵阳学院 | A kind of adopting surface mounted LED loop filter |
| CN207458773U (en) * | 2017-10-25 | 2018-06-05 | 贺兴辉 | A kind of Combined type pottery porcelain condenser |
| CN108335831A (en) * | 2018-03-30 | 2018-07-27 | 江西欧美亚电子有限公司 | A kind of patch type filter |
-
2019
- 2019-04-09 CN CN201910280518.8A patent/CN109888443B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1444772A (en) * | 2000-07-31 | 2003-09-24 | 勒克西姆公司 | Plasma lamp with dielectric waveguide |
| WO2014071721A1 (en) * | 2012-11-08 | 2014-05-15 | 华为技术有限公司 | Filter, receiver, transmitter and transceiver |
| CN103059576A (en) * | 2012-12-30 | 2013-04-24 | 深圳市鸿富诚屏蔽材料有限公司 | High-heat-conductivity flexible silica gel gasket and preparation method thereof |
| JP2014143517A (en) * | 2013-01-23 | 2014-08-07 | Nippon Hoso Kyokai <Nhk> | High frequency filter |
| JP2015171004A (en) * | 2014-03-07 | 2015-09-28 | 古河電気工業株式会社 | High frequency module |
| CN204179187U (en) * | 2014-11-21 | 2015-02-25 | 江苏特兴通讯科技有限公司 | The fin of descending cavity body filter is suppressed for GSM |
| EP3240100A1 (en) * | 2016-04-28 | 2017-11-01 | Alcatel Lucent | A radio frequency filter comprising a chamber, and a method of filtering |
| CN106299563A (en) * | 2016-08-24 | 2017-01-04 | 苏州优浦精密铸造有限公司 | A kind of assembling casing of filter with heat sinking function |
| CN206506815U (en) * | 2017-01-17 | 2017-09-19 | 安科瑞电气股份有限公司 | A kind of good modular active filter of thermal diffusivity |
| CN206674415U (en) * | 2017-04-01 | 2017-11-24 | 邵阳学院 | A kind of adopting surface mounted LED loop filter |
| CN107151146A (en) * | 2017-06-15 | 2017-09-12 | 铜陵安博电路板有限公司 | It is a kind of for PCB enhanced alumina-based ceramic of high heat conduction type Zirconium oxide fibre CNT and preparation method thereof |
| CN207458773U (en) * | 2017-10-25 | 2018-06-05 | 贺兴辉 | A kind of Combined type pottery porcelain condenser |
| CN108335831A (en) * | 2018-03-30 | 2018-07-27 | 江西欧美亚电子有限公司 | A kind of patch type filter |
Non-Patent Citations (1)
| Title |
|---|
| 李文芳 等: "改性纳米氧化铝增韧环氧树脂的研究", 《胶体与聚合物》 * |
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