CN103107406B - Harmonic oscillator, resonant cavity, wave filter and electromagnetic wave device - Google Patents
Harmonic oscillator, resonant cavity, wave filter and electromagnetic wave device Download PDFInfo
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- CN103107406B CN103107406B CN201210580286.6A CN201210580286A CN103107406B CN 103107406 B CN103107406 B CN 103107406B CN 201210580286 A CN201210580286 A CN 201210580286A CN 103107406 B CN103107406 B CN 103107406B
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Abstract
The invention relates to a harmonic oscillator. The harmonic oscillator is characterized by comprising at least two dielectric layers and conducting layers arranged between at least two adjacent dielectric layers. The invention further relates to a resonant cavity which is provided with the harmonic oscillator, a wave filter and an electromagnetic wave device. Due to the fact that the harmonic oscillator is composed of an inner dielectric layer and an outer inner dielectric layer and the conducting layers are arranged between the two dielectric layers, so that the structure of the harmonic oscillator is beneficial for the reduction of resonance frequency of the resonant cavity provided with the harmonic oscillator, the size of the resonant cavity is greatly reduced, and the size of the wave filter provided with the resonate cavity and the size of the electromagnetic wave device are obviously reduced along with the reduction of the size of the resonate cavity.
Description
Technical field
The present invention relates to RF Components and equipment thereof, more particularly, relate to a kind of harmonic oscillator, resonant cavity, filtering device and electromagnetic wave device.
Background technology
Conventional metals harmonic oscillator filter volume is little and can realize the resonance of lower frequency, but the little meeting of volume causes bearing higher power.Traditional dielectric resonance subfilter can be born high power, but if realize low-frequency resonant, the volume of dielectric resonance and the volume of wire chamber can be larger, do not meet the demand of filter miniaturization.How designing that a kind of resonance frequency is low, volume is little and resistance to high-power harmonic oscillator and filter thereof, is to need a problem solving.
Summary of the invention
The object of the invention is to, for the above-mentioned defect of prior art, provide that a kind of resonance frequency is low, volume is little and resistance to high-power harmonic oscillator, resonant cavity, filtering device and electromagnetic wave device.
The technical solution adopted for the present invention to solve the technical problems is: a kind of harmonic oscillator, comprise at least two dielectric layers, and between two adjacent described dielectric layers, be provided with conductive layer.
In harmonic oscillator of the present invention, described dielectric layer and conductive layer all have multiple, and described dielectric layer and conductive layer alternately arrange.
In harmonic oscillator of the present invention, described multiple dielectric layers are tubular and inside and outside sheathed successively, between arbitrary neighborhood two tubular medium cylinders, are equipped with conductive layer.
In harmonic oscillator of the present invention, described conductive layer is tubular, and with described at least two dielectric layers replace successively inside and outside sheathed.
In harmonic oscillator of the present invention, each described conductive layer is a ring-type conductive foil.
In harmonic oscillator of the present invention, each described conductive layer comprises at least one artificial micro-structural.
In harmonic oscillator of the present invention, each described conductive layer comprises multiple artificial micro-structurals that are not electrically connected mutually, and each artificial micro-structural is the structure with geometrical pattern that electric conducting material is made.
In harmonic oscillator of the present invention, the height of different medium layer is identical or incomplete same.
In harmonic oscillator of the present invention, the relative position of different conductive layers is identical or incomplete same.
In harmonic oscillator of the present invention, the artificial micro-structural of different conductive layers is identical or incomplete same.
In harmonic oscillator of the present invention, described dielectric layer is greater than 1 material by dielectric constant and makes.
In harmonic oscillator of the present invention, described dielectric layer is greater than 30 material by dielectric constant and makes.
In harmonic oscillator of the present invention, described dielectric layer is made by ceramic material.
In harmonic oscillator of the present invention, the electric conducting material of described conductive layer is metal.
In harmonic oscillator of the present invention, described electric conducting material is silver, copper or gold, or for containing in silver, copper or gold the alloy of one or both or three kinds.
In harmonic oscillator of the present invention, the electric conducting material of described conductive layer is nonmetal.
In harmonic oscillator of the present invention, described electric conducting material is electrically conductive graphite, indium tin oxide or Al-Doped ZnO.
In harmonic oscillator of the present invention, described conductive layer is directly attached to adjacent two dielectric layer surfaces or interval setting with it.
The invention still further relates to a kind of resonant cavity, comprise cavity, be positioned at the above-mentioned harmonic oscillator of described cavity, it comprises at least two dielectric layers, between two adjacent described dielectric layers, is provided with conductive layer.
In resonant cavity of the present invention, described at least two dielectric layers are tubular and inside and outside sheathed successively, between arbitrary neighborhood two tubular medium cylinders, are equipped with conductive layer.
In resonant cavity of the present invention, described resonant cavity also comprises and is contained on described cavity and stretches in described cavity and play tuning tuning plug used, and described tuning plug and described shrinkage pool arrange in opposite directions.
In resonant cavity of the present invention, described tuning plug is that dielectric constant is greater than the screw rod that 1 nonmetallic materials are made.
In resonant cavity of the present invention, described tuning plug is metal screw.
In resonant cavity of the present invention, described dielectric layer Bottomattached has conductor articulamentum.
In resonant cavity of the present invention, the inwall of described conductor articulamentum and described resonant cavity is connected to one by welding or hot pressing or threaded engagement or bonding mode.
In resonant cavity of the present invention, each described conductive layer comprises at least one artificial micro-structural.
The invention still further relates to a kind of filtering device, comprise one or more resonant cavitys, at least one resonant cavity is above-mentioned resonant cavity.
In filtering device of the present invention, described filtering device is filter or duplexer.
In filtering device of the present invention, described conductive layer contacts with ground connection with described resonant cavity.
In filtering device of the present invention, described filtering device comprises multiple resonant cavitys, is provided with a described harmonic oscillator in each resonant cavity, and each harmonic oscillator correspondence is provided with a tuning plug.
In filtering device of the present invention, between the resonant cavity of described filtering device and resonant cavity, be the coupling of windowing, and each position of windowing is provided with coupling bar.
In filtering device of the present invention, described filtering device is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
The invention still further relates to a kind of electromagnetic wave device, comprise signal emission module, signal receiving module and filtering device, the input of described filtering device is connected with described signal emission module, and output is connected with signal receiving module, and described filtering device is filtering device described above.
Described electromagnetic wave device is aircraft, radar, base station or satellite.
Implement the present invention, there is following beneficial effect: harmonic oscillator of the present invention adopts the structure that conductive layer is set between inside and outside two dielectric layers, can obtain a pattern that resonance frequency is lower, be conducive to reduce the resonance frequency of the resonant cavity with this harmonic oscillator, thereby greatly dwindle the volume of resonant cavity, there is the filtering device of this resonant cavity and the volume of electromagnetic wave device also can obviously reduce thereupon.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the vertical view of the harmonic oscillator of first embodiment of the invention;
Fig. 2 is the front view of harmonic oscillator shown in Fig. 1;
Fig. 3 is the cutaway view of the harmonic oscillator of second embodiment of the invention;
Fig. 4 is the vertical view of the harmonic oscillator of third embodiment of the invention;
Fig. 5 is cutaway view embodiment illustrated in fig. 4;
Fig. 6 is the vertical view of the harmonic oscillator of third embodiment of the invention;
Fig. 7 is the perspective view of the harmonic oscillator of fourth embodiment of the invention;
Fig. 8 is the structural representation of resonant cavity of the present invention;
Fig. 9 is the structural representation of electromagnetic wave device of the present invention.
Embodiment
The present invention relates to a kind of harmonic oscillator and there is resonant cavity, filtering device and the electromagnetic wave device of this harmonic oscillator, this harmonic oscillator makes resonant cavity have low-down resonance frequency, thereby much smaller with traditional resonant cavity phase specific volume of identical resonance frequency, can effectively reduce the filtering device being formed by resonant cavity and there is the volume and weight of the electromagnetic wave device of this filtering device.
Wherein the harmonic oscillator of an embodiment as shown in Figure 1 and Figure 2, comprises that two dielectric layers, 3, two dielectric layers 1 are tubular and inside and outside nested, and dielectric layer 3 is tubular, porose 2 structure in the middle of referring to, and this hole 2 can be that through hole can be also blind hole, is not restricted herein.
Between two dielectric layers 3, be provided with conductive layer 1.The material that dielectric layer 3 can be greater than 1 for any dielectric constant, such as polytetrafluoroethylene, epoxy resin, F4B, FR4 material etc., but the material that dielectric constant is higher, loss angle tangent is less is more conducive to electromagnetic resonance and reduces resonance frequency, preferably ceramic material in prior art, for example aluminium oxide can be also such as BaTi of microwave-medium ceramics
4o
9, Ba
2ti
9o
20, MgTiO
3-CaTiO
3, BaO-Ln
2o
3-TiO
2system, Bi
2o
3-ZnO-Nb
2o
5system etc.Certainly as long as the material with higher dielectric constant and lower loss (dielectric constant is greater than 30 conventionally, and loss angle tangent is less than 0.01) all can.
As shown in Figure 1, the dielectric layer 3 of the present embodiment is rectangle square column, and four rib roundings.Certainly harmonic oscillator is not limited to this shape, dielectric layer 3 of the present invention can be the shape that existing any one harmonic oscillator has, for example cylindrical, square shape sheet, truncated cone-shaped, square halfpace, or other any regular or irregularly shaped, the characteristic that this does not have influence on harmonic oscillator of the present invention, is not restricted herein.
The material of the conduction of conductive layer 1 is preferably metal, for example silver, copper or gold, or for containing in silver, copper or gold the alloy of one or both or three kinds.
Or the annular conductive foil that conductive layer 1 is thinner thickness, is attached on the surface between two dielectric layers 3, or is electroplated onto on this surface.Certainly, this annular conductive foil might not cover all surfaces between two dielectric layers 3, can a cover part.And this annular conductive foil can be complete sheet, also can be provided with therein hollow out, for example have elongated gap, hollow out and become latticed etc.
As shown in Figure 7, conductive layer 1 comprises the artificial micro-structural of multiple snowflake types.Certainly, artificial micro-structural can be also other shapes, such as annular, I-shaped, square shape sheet etc.
Harmonic oscillator of the present invention is not limited to dielectric layer 3 and only has two-layerly, and as shown in Fig. 4, Fig. 5, Fig. 6, harmonic oscillator can also comprise the structure more than two dielectric layers 3.
As shown in Figure 4, Figure 5, dielectric layer 3 and conductive layer 1 all have multiple, and dielectric layer 3 alternately arranges with conductive layer 1.Each dielectric layer is tubular and inside and outside sheathed successively, between arbitrary neighborhood two tubular medium cylinders, is equipped with conductive layer.Equally, conductive layer 1 can be to have certain thickness tubular, with dielectric layer 3 replace successively inside and outside sheathed, can be also the conductive foil of thinner thickness.
When dielectric layer 3 and conductive layer 1 all have two-layer or two-layerly when above, harmonic oscillator of the present invention has various ways.For example, the height of different medium layer 3 can be identical, also can be incomplete same.From outside to inside, it successively decreases dielectric layer 3 shown in Fig. 5 highly successively, and the height of conductive layer 1 also successively decreases successively.Vice versa.Certainly, the height of dielectric layer 3 and conductive layer 1 can arbitrarily arrange according to actual needs.
In addition, the relative position of different conductive layers 3 on corresponding two layer medium layer 3 also can be identical or incomplete same.For example, the conductive layer 3 shown in Fig. 5 covers the maximum area contacting between adjacent two dielectric layers, certainly, also can partly cover the area of each contact-making surface, or from outside to inside, the height of conductive layer 1 rises gradually or declines, or arrange at random etc., also do not limit herein.
Known above, the conductive layer between adjacent two dielectric layers 3 is an independently conductive layer, and each conductive layer can be annular conductive foil entirety, also can be one or more artificial micro-structurals.Artificial micro-structural in each conductive layer can be identical, also can be different.The artificial micro-structural of different conductive layers also can be identical or incomplete same, and shown in Fig. 6, Fig. 7 is all identical situations of artificial micro-structural, and incomplete same situation is appreciated that.
Below in conjunction with the concrete applied environment of harmonic oscillator---advantage that resonant cavity illustrates this harmonic oscillator with and with the difference of existing media ceramic harmonic oscillator.
Resonant cavity as shown in Figure 8, comprises cavity 6, harmonic oscillator and tuning plug 5.Wherein, cavity 6 comprises cavity and the chamber lid that is contained in cavity hatch end, and cavity and chamber lid enclose an enclosure space, and above-mentioned harmonic oscillator is positioned at described enclosure space.Cavity or chamber cover is equipped with tuning plug 5, and tuning plug 5 ends stretch in enclosure space and stretch at least in part a tunning effect in tubular harmonic oscillator.
Tuning plug 4 also can be made for nonmetallic materials, as long as its dielectric constant is greater than 1, and the certainly preferred higher material of dielectric constant.The present invention not material to tuning plug 4 and shape does any restriction, thereby as long as its stretch into that cavity 6 is interior can perturbation chamber in electromagnetic field distribution affect resonance frequency.Tuning plug 5 ends can directly contact with shrinkage pool 2 inwalls or the second conductive layer 3.
In addition, the bottom surface contacting with cavity 6 of dielectric layer 3 can arrange conductor articulamentum, and described conductor articulamentum is that the conductor material identical or different from above-mentioned conductive layer 3 made, and couples together with the second conductive layer 3 on through-hole wall.Now this conductor articulamentum can be fixed with one by hot pressing or welding or other known interconnection techniques and cavity 6.
To the advantage of harmonic oscillator of the present invention be described by specific experiment data below.
Take single chamber resonant cavity with pure ceramic dielectric harmonic oscillator as comparative example, this resonant cavity is cylindrical, this ceramic dielectric harmonic oscillator adopts microwave-medium ceramics, the cylinder that is of a size of external diameter 24mm, internal diameter 8mm, high 16mm, the corresponding through hole of internal diameter, the resonance frequency that experiment records the resonant cavity with this harmonic oscillator is 1.673GHz.
Adopt identical cavity and harmonic oscillator, and this ceramic dielectric harmonic oscillator is divided into the outer media layer 3 of external diameter 24mm, internal diameter 16mm and is set in coaxially interior external diameter 15mm, the internal layer dielectric layer 3 of internal diameter 8mm, between the two, be provided with the annular conductive layer 1 of thickness 1mm, experiment records the resonance frequency of the resonant cavity with this harmonic oscillator and is down to 1.24GHz.As can be seen here, adopt harmonic oscillator of the present invention, resonance frequency can be reduced to about 400MHz, corresponding meaning, when preparing the resonant cavity of identical resonance frequency, cavity volume will significantly reduce.
When the harmonious oscillator of above-mentioned identical cavity, and when this ceramic dielectric harmonic oscillator is divided into the outermost layer dielectric layer 3, the middle dielectric layer 3 of external diameter 20mm, internal diameter 15mm of external diameter 24mm, internal diameter 21mm and the innermost layer dielectric layer 3 of external diameter 14mm, internal diameter 8mm, the conductive layer that is respectively equipped with a layer thickness 1mm between adjacent two dielectric layers, records resonance frequency and is down to 0.58GHz.Resonance frequency is less than the half of the frequency of pure ceramic resonance.
Therefore, adopt harmonic oscillator of the present invention and resonant cavity thereof, its resonance frequency can reduce greatly, and therefore, under the condition that realizes identical resonance frequency, the volume of resonant cavity can significantly reduce.
The feature of the resonant cavity based on above-mentioned single chamber, the invention still further relates to a kind of filtering device, can there is for band pass filter, band stop filter, high pass filter, low pass filter or multiband filter, duplexer or other device of filter function, it comprises at least one resonant cavity, and wherein at least one resonant cavity is above-mentioned resonant cavity.
And then the present invention also protects a kind of electromagnetic wave device with above-mentioned filtering device, this electromagnetic wave device can be any equipment that need to use filtering device, such as aircraft, radar, base station, satellite etc.These electromagnetic wave devices can receive and transmitted signal, and carry out filtering after receiving or before sending, so that the signal that institute receives or sends satisfies the demands, therefore electromagnetic wave device at least also comprises the signal emission module being connected with the input of filtering device, the signal receiving module being connected with the output of filtering device.
For example, as shown in Figure 9, electromagnetic wave device is base station, and base station comprises the duplexer as filtering device, and duplexer comprises post a letter band pass filter and collection of letters band pass filter.Post a letter band pass filter input connect sender, output connect antenna for base station; The input of collection of letters band pass filter connects antenna for base station, and output connects receiver.
, for the band pass filter of posting a letter, its signal emission module is sender, and signal receiving module is antenna for base station.And for collection of letters band pass filter, its signal emission module is antenna for base station, signal receiving module is receiver.
The present invention is owing to adopting inside and outside wall to have the harmonic oscillator of conductive layer, preferably conductive layer is annular tubular structure, be conducive to reduce the resonance frequency of the resonant cavity with this harmonic oscillator, thereby greatly dwindle the volume of resonant cavity, there is the filtering device of this resonant cavity and the volume of electromagnetic wave device also can obviously reduce thereupon.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (29)
1. a harmonic oscillator, is characterized in that, described harmonic oscillator comprises:
At least two dielectric layers;
Wherein, between two adjacent described dielectric layers, be provided with conductive layer;
Described at least two dielectric layers are tubular and inside and outside sheathed successively, between arbitrary neighborhood two tubular medium cylinders, are equipped with conductive layer;
Described conductive layer is tubular, and with described multiple dielectric layers replace successively inside and outside sheathed;
Each described conductive layer comprises multiple artificial micro-structurals that are not electrically connected mutually, and each artificial micro-structural is the structure with geometrical pattern that electric conducting material is made.
2. harmonic oscillator according to claim 1, is characterized in that, described dielectric layer and conductive layer all have multiple, and described dielectric layer and conductive layer alternately arrange.
3. harmonic oscillator according to claim 1, is characterized in that, each described conductive layer is a ring-type conductive foil.
4. harmonic oscillator according to claim 2, is characterized in that, the height of different medium layer is identical or incomplete same.
5. harmonic oscillator according to claim 2, is characterized in that, the relative position of different conductive layers is identical or incomplete same.
6. harmonic oscillator according to claim 1, is characterized in that, the artificial micro-structural of different conductive layers is identical or incomplete same.
7. harmonic oscillator according to claim 1, is characterized in that, described dielectric layer is greater than 1 material by dielectric constant and makes.
8. harmonic oscillator according to claim 1, is characterized in that, described dielectric layer is greater than 30 material by dielectric constant and makes.
9. harmonic oscillator according to claim 8, is characterized in that, described dielectric layer is made by ceramic material.
10. harmonic oscillator according to claim 1, is characterized in that, the electric conducting material of described conductive layer is metal.
11. harmonic oscillators according to claim 10, is characterized in that, described electric conducting material is silver, copper or gold, or for containing in silver, copper or gold the alloy of one or both or three kinds.
12. harmonic oscillators according to claim 1, is characterized in that, the electric conducting material of described conductive layer is nonmetal.
13. harmonic oscillators according to claim 12, is characterized in that, described electric conducting material is electrically conductive graphite, indium tin oxide or Al-Doped ZnO.
14. harmonic oscillators according to claim 1, is characterized in that, described conductive layer is directly attached to adjacent two dielectric layer surfaces or interval setting with it.
15. 1 kinds of resonant cavitys, comprise cavity, are positioned at the harmonic oscillator of described cavity, it is characterized in that, described harmonic oscillator is the harmonic oscillator as described in claim 1 to 14 any one.
16. resonant cavitys according to claim 15, is characterized in that, described resonant cavity also comprises and be contained on described cavity and stretch in described cavity and play tuning tuning plug used, and described tuning plug and shrinkage pool arrange in opposite directions.
17. resonant cavitys according to claim 16, is characterized in that, described tuning plug is that dielectric constant is greater than the screw rod that 1 nonmetallic materials are made.
18. resonant cavitys according to claim 16, is characterized in that, described tuning plug is metal screw.
19. resonant cavitys according to claim 18, is characterized in that, described dielectric layer Bottomattached has conductor articulamentum.
20. resonant cavitys according to claim 19, is characterized in that, the inwall of described conductor articulamentum and described resonant cavity is connected to one by welding or hot pressing or threaded engagement or bonding mode.
21. resonant cavitys according to claim 15, is characterized in that, each described conductive layer comprises at least one artificial micro-structural.
22. 1 kinds of filtering devices, comprise one or more resonant cavitys, it is characterized in that, at least one resonant cavity is the resonant cavity as described in claim 15 to 21 any one.
23. filtering devices according to claim 22, is characterized in that, described filtering device is filter or duplexer.
24. filtering devices according to claim 22, is characterized in that, described conductive layer contacts with ground connection with described resonant cavity.
25. filtering devices according to claim 22, is characterized in that, described filtering device comprises multiple resonant cavitys, are provided with a described harmonic oscillator in each resonant cavity, and each harmonic oscillator correspondence is provided with a tuning plug.
26. filtering devices according to claim 25, is characterized in that, be the coupling of windowing, and each position of windowing are provided with coupling bar between the resonant cavity of described filtering device and resonant cavity.
27. filtering devices according to claim 22, is characterized in that, described filtering device is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
28. 1 kinds of electromagnetic wave devices, comprise signal emission module, signal receiving module and filtering device, the input of described filtering device is connected with described signal emission module, output is connected with signal receiving module, it is characterized in that, described filtering device is the filtering device as described in claim 22 to 27 any one.
29. electromagnetic wave devices according to claim 28, is characterized in that, described electromagnetic wave device is aircraft, radar, base station or satellite.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210580286.6A CN103107406B (en) | 2012-11-20 | 2012-11-30 | Harmonic oscillator, resonant cavity, wave filter and electromagnetic wave device |
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| CN201210472162.6 | 2012-11-20 | ||
| CN201210472162 | 2012-11-20 | ||
| CN201210580286.6A CN103107406B (en) | 2012-11-20 | 2012-11-30 | Harmonic oscillator, resonant cavity, wave filter and electromagnetic wave device |
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| CN103107406A CN103107406A (en) | 2013-05-15 |
| CN103107406B true CN103107406B (en) | 2014-04-16 |
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| CN107394333A (en) * | 2017-06-21 | 2017-11-24 | 安徽华东光电技术研究所 | Coaxial cavity dielectric oscillator and its preparation method and application |
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| CN1326270A (en) * | 2000-05-25 | 2001-12-12 | 株式会社村田制作所 | Coaxial resonator, filter, duplexer and communication device |
| CN102165640A (en) * | 2008-04-14 | 2011-08-24 | 阿尔卡特朗讯 | Suspended dielectric combline cavity filter |
| CN202275917U (en) * | 2011-09-16 | 2012-06-13 | 深圳光启高等理工研究院 | Resonant cavity |
| CN102723570A (en) * | 2012-05-30 | 2012-10-10 | 深圳光启创新技术有限公司 | Ceramic dielectric harmonic oscillator |
-
2012
- 2012-11-30 CN CN201210580286.6A patent/CN103107406B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326270A (en) * | 2000-05-25 | 2001-12-12 | 株式会社村田制作所 | Coaxial resonator, filter, duplexer and communication device |
| CN102165640A (en) * | 2008-04-14 | 2011-08-24 | 阿尔卡特朗讯 | Suspended dielectric combline cavity filter |
| CN202275917U (en) * | 2011-09-16 | 2012-06-13 | 深圳光启高等理工研究院 | Resonant cavity |
| CN102723570A (en) * | 2012-05-30 | 2012-10-10 | 深圳光启创新技术有限公司 | Ceramic dielectric harmonic oscillator |
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