CN202997029U - Harmonic oscillator and cavity filter thereof, and electromagnetic wave equipment - Google Patents
Harmonic oscillator and cavity filter thereof, and electromagnetic wave equipment Download PDFInfo
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- CN202997029U CN202997029U CN 201220616556 CN201220616556U CN202997029U CN 202997029 U CN202997029 U CN 202997029U CN 201220616556 CN201220616556 CN 201220616556 CN 201220616556 U CN201220616556 U CN 201220616556U CN 202997029 U CN202997029 U CN 202997029U
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Abstract
The utility model relates to a harmonic oscillator, comprising a dielectric body having a cylindrical surface and at least one response unit adhered on the cylindrical surface; wherein the response unit has a structure which is made by a conductive material and has a geometric pattern. The utility model also relates to a cavity filter having the harmonic oscillator and electromagnetic wave equipment. By adopting the harmonic oscillator of the utility model, a dielectric constant can be effectively raised, and a resonant frequency of the cavity filter is reduced, thereby realizing miniaturization, in addition, for a TM-mode electromagnetic wave, the frequency can be reduced without influencing electromagnetic loss.
Description
Technical field
The utility model relates to the radio-frequency devices field, more particularly, relates to a kind of harmonic oscillator and cavity body filter thereof and electromagnetic wave device.
Background technology
Harmonic oscillator claims again dielectric resonator, has that dielectric constant is high, electromagnetic consumable is a bit low, is widely used in various microwave radio devices the duplexer that consists of such as cavity body filter, cavity body filter etc.Usually harmonic oscillator is cylindrical, is formed by microwave-medium ceramics one sintering.
The requirement that dielectric constant is high, electromagnetic consumable is low although microwave-medium ceramics also has, thereby tolerance power advantages of higher meets harmonic oscillator, but along with improving constantly of the development of science and technology, product integrated level, people further improve the miniaturization demand of filter, duplexer.In prior art, volume and the resonance frequency of cavity body filter, duplexer are inversely proportional to, if directly its resonant cavity cavity is reduced volume, its corresponding resonance frequency can increase, thereby can not satisfy the filter function of filter.How can realize miniaturization, not affect again the use function of normal cavity body filter and duplexer, be the common urgent problem of present research staff.
The utility model content
The purpose of this utility model is, for the defects of prior art, provides a kind of and realizes that miniaturization does not affect harmonic oscillator and cavity body filter and the electromagnetic wave device of resonance frequency and other performances simultaneously.
The utility model provides a kind of harmonic oscillator, comprises the medium body with face of cylinder and at least one response unit that is attached on the described face of cylinder; Described response unit is the structure with geometrical pattern that electric conducting material is made.
In harmonic oscillator described in the utility model, described response unit presents positive equivalent refractive index at elect magnetic field corresponding to the operating frequency of described harmonic oscillator.
In harmonic oscillator described in the utility model, described response unit has a plurality of and is not electrically connected to mutually.
In harmonic oscillator described in the utility model, described medium body has a plurality of coaxial and inside and outside nested faces of cylinder, is attached with one or more described response units on one of them face of cylinder.
In harmonic oscillator described in the utility model, described response unit is positioned on one or more faces of cylinder of diameter less than the first preset value, the face of cylinder that described the first preset value is less than or equal to the outermost face of cylinder and innermost layer in described a plurality of face of cylinder both the diameter sum 90%.
In harmonic oscillator described in the utility model, described response unit is arranged on a face of cylinder of described a plurality of faces of cylinder innermost layer.
In harmonic oscillator described in the utility model, the size of the response unit on each face of cylinder is successively decreased along with the increase of face of cylinder diameter.
In harmonic oscillator described in the utility model, described medium body comprises a plurality of inside and outside nested cylinder shape medium cylinders, inner surface and the outer surface of each described medium cylinder are the face of cylinder, are attached with described response unit on the inner surface of at least one described medium cylinder or outer surface.
In harmonic oscillator described in the utility model, the operating frequency of described harmonic oscillator is lower than the resonance frequency of described response unit or higher than the plasma frequency of described response unit.
In harmonic oscillator described in the utility model, the size of described response unit is less than the corresponding electromagnetic wavelength of the operating frequency of described harmonic oscillator.
In harmonic oscillator described in the utility model, the size of described response unit is less than 1/2nd of the corresponding electromagnetic wavelength of operating frequency of described harmonic oscillator.
In harmonic oscillator described in the utility model, the size of described response unit is less than 1/5th of the corresponding electromagnetic wavelength of operating frequency of described harmonic oscillator.
In harmonic oscillator described in the utility model, the size of described response unit is less than 1/10th of the corresponding electromagnetic wavelength of operating frequency of described harmonic oscillator.
In harmonic oscillator described in the utility model, described medium body by dielectric constant greater than 1, loss tangent makes less than 0.1 material.
In harmonic oscillator described in the utility model, described medium body by dielectric constant greater than 10, loss tangent makes less than 0.01 material.
In harmonic oscillator described in the utility model, described medium body by dielectric constant greater than 30, loss tangent makes less than 0.001 material.
In harmonic oscillator described in the utility model, described medium body is made by microwave-medium ceramics.
In harmonic oscillator described in the utility model, described electric conducting material is metal material.
In harmonic oscillator described in the utility model, described electric conducting material is gold, silver, copper, and perhaps described electric conducting material is the alloy that contains gold, silver or copper.
In harmonic oscillator described in the utility model, described electric conducting material is nonmetallic materials.
In harmonic oscillator described in the utility model, described electric conducting material is indium tin oxide, Al-Doped ZnO or electrically conductive graphite.
In harmonic oscillator described in the utility model, described response unit is identical or incomplete same.
In harmonic oscillator described in the utility model, described response unit is axially upper along the described face of cylinder to be reduced gradually or increases to the centre from two ends.
In harmonic oscillator described in the utility model, described response unit is anisotropic structure.
The utility model also relates to a kind of cavity body filter, comprises resonant cavity and the harmonic oscillator that is positioned at described resonant cavity, and described harmonic oscillator comprises the medium body with face of cylinder and at least one response unit that is attached on the described face of cylinder; Described response unit is the structure with geometrical pattern that electric conducting material is made.
In cavity body filter described in the utility model, the first mode of described cavity body filter is the TM pattern, and described response unit is arranged on one or more faces of cylinder, and described one or more faces of cylinder are respectively to be extended and form along direction of an electric field by the one or more magnetic lines of force under described TM pattern.
In cavity body filter described in the utility model, the response unit of described harmonic oscillator at electric field strength on electric field strength maximum to this maximum reduces the face of cylinder between 0.5dB.
In cavity body filter described in the utility model, described response unit is positioned on one or more faces of cylinder of diameter less than the first preset value, the face of cylinder that described the first preset value is less than or equal to the outermost face of cylinder and innermost layer in described a plurality of face of cylinder both the diameter sum 90%.
In cavity body filter described in the utility model, described cavity body filter is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
The utility model also relates to a kind of electromagnetic wave device, comprise signal emission module, signal receiving module and cavity body filter, the input of described cavity body filter is connected with described signal emission module, output is connected with described signal receiving module, described cavity body filter comprises resonant cavity and the harmonic oscillator that is positioned at described resonant cavity, and described harmonic oscillator comprises the medium body with face of cylinder and at least one response unit that is attached on the described face of cylinder; Described response unit is the structure with geometrical pattern that electric conducting material is made.
In electromagnetic wave device described in the utility model, described electromagnetic wave device is the base station.
In electromagnetic wave device described in the utility model, described base station comprises duplexer, and described duplexer comprises post a letter band pass filter and collection of letters band pass filter, and in described post a letter band pass filter and collection of letters band pass filter, at least one is described cavity body filter.
In electromagnetic wave device described in the utility model, described electromagnetic wave device is aircraft or radar or satellite.
Implement harmonic oscillator of the present utility model and cavity body filter thereof and electromagnetic wave device, have following beneficial effect: harmonic oscillator of the present utility model utilizes response unit to improve dielectric constant, can effectively reduce the resonance frequency of this filter, thereby effectively reduce the volume of filter when realizing the situation of identical resonance frequency; In addition, because response unit is attached on the face of cylinder, effectively eddy current loss has even been avoided in minimizing, thereby avoids the Q value reduction that brings because introducing response unit that electric conducting material makes.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the structural representation of the harmonic oscillator of the utility model the first embodiment;
Fig. 2 is the vertical view of the harmonic oscillator of the second embodiment;
Fig. 3 is the vertical view of the harmonic oscillator of the 3rd embodiment;
Fig. 4 is that response unit of the present utility model is bent into the face of cylinder possible planar structure shape before; ,
Fig. 5 is a kind of concrete dimensional drawing of response unit;
Fig. 6 is the equivalent refractive index of response unit shown in Figure 5 and the relation curve of frequency;
Fig. 7 is the structural representation of another response unit;
Fig. 8 is the equivalent refractive index of response unit shown in Figure 7 and the relation curve of frequency;
Fig. 9 is the structural representation of the cavity body filter in an embodiment;
Figure 10 is the Distribution of Magnetic Field figure under the TM pattern;
Figure 11 is the distribution map of the electric field under the TM pattern;
Figure 12 is the structural representation of response unit when being positioned on the radius larger face of cylinder;
Figure 13 is the structural representation of response unit when being positioned on the radius less face of cylinder;
Figure 14 is that response unit comes on the face of cylinder and the structural representation of quantity when relatively less;
Figure 15 is the structural representation of electromagnetic wave device of the present utility model when being the base station.
Embodiment
The utility model relates to a kind of harmonic oscillator, as shown in Figure 1, as shown in Figure 1, comprises medium body 3 and at least one response unit 4.Medium body 3 middle part usually has through hole and circularizes, and carries out frequency modulation so that the tuning screw of cavity body filter inserts this through hole.Having one or more curved surfaces between the inner surface of medium body 3 or outer surface or inner surface and outer surface is the face of cylinder, and response unit 4 namely is arranged on wherein at least one face of cylinder.
The face of cylinder herein can be actual interface, for example inner surface or outer surface, or medium body 3 comprises inside and outside nested first medium cylinder and second medium cylinder, contact interface both is the face of cylinder, and response unit 4 is attached on this face of cylinder, as shown in Figure 2; The face of cylinder of this paper can be also the face of cylinder that virtual division forms; after for example preparing response unit 4 on first medium cylinder, the medium cylinder contacted face of cylinder; both fuse into one by hot pressing, the mode such as fire; make the interface on this face of cylinder disappear; but response unit 4 remains and distributes along a face of cylinder; as shown in Figure 3, this situation also belongs to protection range of the present utility model.
The material of medium body 3, espespecially be applicable to can be used as in cavity body filter the material of dielectric resonance, these materials have the advantages that dielectric constant is high, loss tangent is low, under the operating frequency of harmonic oscillator, its dielectric constant is usually above 30, and loss tangent is lower than 0.001.Satisfactory common used material is microwave-medium ceramics, for example BaTi
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, except the satisfactory other materials of pottery also can be used as medium body of the present utility model, in to the less demanding situation of resonant cavity miniaturization, the medium body select dielectric constant greater than 10, loss angle tangent gets final product less than 0.01 material.Even, only need the dielectric constant of medium body to get final product less than 0.1 material greater than air (its dielectric constant approximates 1), loss tangent, such as polytetrafluoroethylene, epoxy resin etc.
The shape of medium body 3 can have any shape, such as square column type, annular, irregularly shaped etc.According to the difference of the shape of applied resonant cavity, the shape of medium body is also different, so long as the shape of dielectric resonance that has in prior art, all can be used as the shape of medium body 3 of the present utility model.Preferably, medium body 3 is the symmetrical structure of rule, square column type or cylindrical for example, and modal is cylindrical.
The operating frequency of harmonic oscillator above, refer to that this harmonic oscillator is applied in the resonant cavity of a cavity body filter or duplexer, corresponding cavity body filter or the needed operating frequency of duplexer, be for example the resonance frequency of the corresponding electromagnetic field of first mode (holotype) separately; This resonance frequency is usually suitable with the resonance frequency of the medium body 3 of harmonic oscillator.
Electric conducting material herein can be the alloy of metal or metal, and for example silver, copper, gold, perhaps contain silver, copper or gold or the strong alloy of other conductive capabilities, can be also can conduct electricity nonmetal, such as electrically conductive graphite, Al-Doped ZnO, indium tin oxide etc.
In the utility model, response unit 4 is preferably metal micro structure.Because make response unit 4 have separately independently electromagnetic response at elect magnetic field, its size should be in the sub-wavelength scope, be that size is less than the corresponding electromagnetic wavelength of the operating frequency of harmonic oscillator, be generally less than 1/2nd, the smaller the better, preferably less than 1/5th, the best is less than 1/10th.
Certainly, it is shape shown in Figure 1 that response unit 4 in harmonic oscillator of the present utility model does not limit, it can be that the planar structure of arbitrary shape is attached on the face of cylinder and and stereochemical structure that obtain crooked along the face of cylinder, and this plane uniform thickness structure example is as being solid sheet, hollow ring-type or netted, snowflake shape, fork-shaped, polygon, circle or other are irregularly shaped arbitrarily.Fig. 4 shows the possible several flat shapes of response unit.
Response unit can be arranged on a face of cylinder randomly, preferably is arranged on the face of cylinder with certain rule, for example evenly arranges to Equal round heart angle on this face of cylinder around the central shaft on this face of cylinder, as shown in Figure 3.
Response unit also can be arranged on the face of cylinder of a plurality of different radiis, as shown in Figure 1, medium body 3 comprises a plurality of coaxial inside and outside nested medium cylinders, each medium cylinder all has inner cylinder face and external cylindrical surface, each face of cylinder is similarly coaxial inside and outside nested, is attached with one or more described response units on one of them face of cylinder.
The first utility model point of the present utility model is, satisfies the response unit 4 of above-mentioned dimensional requirement, presents positive equivalent refractive index at the corresponding elect magnetic field of the operating frequency of harmonic oscillator.
The equivalent refractive index of each response unit 4 is one and follows the relevant curve of frequency, an any given response unit, and for example shown in Figure 5, unit of each mark is millimeter (mm), electric conducting material is Copper Foil, copper thickness 0.018mm.Limit dielectric constant and the loss tangent of its medium body that adheres to, get for example 2mm of certain thickness, the emulation in simulation software with this response unit and medium body part thereof obtains the relation curve of its equivalent refractive index and frequency, as shown in Figure 6.More specifically to the algorithm of the equivalent refractive index of response unit, can be Ruopeng Liu, Tie Jun Cui, Da Huang, Bo Zhao and David R.Smith and the paper " Description and explanation of electromagnetic behaviors in artificial metamaterials based on effective medium theory " delivered in 2007 referring to the author.
As shown in Figure 6, this response unit its equivalent refractive index in the full frequency band scope be on the occasion of, therefore can use in harmonic oscillator of the present utility model.
Fig. 7 has provided another response unit, is opening resonance loop structure, and this structure is to realize the typical structure of negative magnetoconductivity, negative refraction.The equivalent refractive index of this split ring resonator and the response curve of frequency are as shown in 8.Wherein, equivalent refractive index is resonance frequency f by the frequency that is 0 when transferring negative value to
0, equivalent refractive index by negative value transfer on the occasion of the time be that 0 frequency is plasma frequency f
1Satisfy equivalent refractive index for just, require the operating frequency of harmonic oscillator less than resonance frequency f
0Or greater than plasma frequency f
1
Therefore, there is the response unit of negative value in whole frequency range for equivalent refractive index, make response unit present positive equivalent refractive index at the corresponding elect magnetic field of the operating frequency of harmonic oscillator, the operating frequency of this harmonic oscillator should be lower than the resonance frequency of described response unit or higher than the plasma frequency of described response unit.
When the equivalent refractive index of response unit has a plurality of resonance frequencys and plasma frequency about the curve of frequency, in the resonance frequency or plasma frequency or the frequency range between last plasma frequency and this plasma frequency higher order resonances frequency subsequently greater than maximum of the operating frequency of harmonic oscillator less than minimum.
Positive equivalent refractive index mean dielectric constant and magnetic permeability be on the occasion of, as long as in dielectric constant and magnetic permeability, one of them value is negative value, be negative equivalent refractive index.The response unit of positive equivalent refractive index is applied on harmonic oscillator, and equivalence is for having improved the average dielectric constant of harmonic oscillator.The known dielectric constant is higher, and the resonance frequency of the applied resonant cavity of harmonic oscillator is lower, and the cavity volume when realizing identical resonance frequency is less, thereby realizes further miniaturization.
Therefore, the utility model is also protected the cavity body filter with this harmonic oscillator, as shown in Figure 9, comprises resonant cavity 2 and the above-mentioned harmonic oscillator that is positioned at this resonant cavity 2.Described cavity body filter can be band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
The below only draws the harmonic oscillator in one of them resonant cavity and this resonant cavity for simplified schematic.Those skilled in the art are easy to expect, cavity body filter may have four resonant cavitys, six resonant cavitys, eight resonant cavitys or more resonant cavity.Can place harmonic oscillator of the present utility model in a resonant cavity therein, adopt traditional sucrose harmonic oscillator or metal harmonic oscillator in other chambeies; Also all adopt harmonic oscillator of the present utility model in several resonant cavitys or all resonant cavitys therein.
As shown in Figure 9, preferably harmonic oscillator is placed on the centre of resonant cavity 2, also can directly be placed on harmonic oscillator on the bottom surface of resonant cavity 2 inner surfaces.
The Distribution of Magnetic Field of TM pattern as shown in figure 10, the direction of arrow and size represent direction and the size of field strength.As shown in Figure 10, magnetic field is around the horizontal circle of the axis of resonant cavity.The Electric Field Distribution of TM pattern as shown in figure 11,
Represent the vertical paper direction of electric field,
Size represent the size of electric field strength.
With harmonic oscillator take magnetic field around center line be the axis, the circumference that surrounds take arbitrary magnetic line of force is as cross section, this circumference extends along direction of an electric field, namely obtain a face of cylinder, the magnetic line of force circumference of different radii can obtain the different faces of cylinder, the medium body of harmonic oscillator namely has a plurality of coaxial and inside and outside nested faces of cylinder, and each face of cylinder is to having a magnetic field intensity and electric field strength.Be attached with one or more response units on one of them face of cylinder.
Two most important parameters of cavity body filter are respectively resonance frequency and Q value.Wherein, resonance frequency is relevant with the effective dielectric constant of harmonic oscillator.Therefore, preferred response unit is arranged on one or more faces of cylinder of electric field strength greater than the second preset value, make effective dielectric constant reach maximum, reduce substantially the resonance frequency of cavity body filter, thereby can reduce the resonant cavity volume when realizing identical resonance frequency.
Under the TM pattern, on each point of harmonic oscillator, an electric field strength is arranged, and have a maximum in these electric field strength, get this second preset value and subtract greater than this maximum the value that 0.5dB obtains.
Response unit is positioned on one or more faces of cylinder of electric field strength greater than the second preset value, be also that response unit is positioned on one or more faces of cylinder of diameter less than the first preset value, preset value preferably be less than or equal to two faces of cylinder of outermost layer and innermost layer in a plurality of faces of cylinder of above-mentioned harmonic oscillator the diameter sum 90%.Preferably, response unit is located immediately on a face of cylinder of harmonic oscillator innermost layer, diameter minimum.Along face of cylinder axis vertically on, response unit can reduce gradually or increases gradually or reduce gradually or increase simultaneously to the centre from two ends, is all feasible.Response unit on each face of cylinder can be identical, can be not identical yet, and this paper does not limit.
The below is with concrete experimental data explanation contrast situation.
At the cavity body filter that the harmonic oscillator of a pure pottery is arranged in, the internal diameter 6mm of harmonic oscillator integral body, external diameter 24mm, height 16mm.Harmonic oscillator does not have response unit, and the resonance frequency that records the first mode of cavity body filter is 1.3075GHz, and the Q value is 10201.
In above-mentioned harmonic oscillator and cavity body filter, as shown in figure 12, other conditionally completes are constant, and harmonic oscillator comprises inner surface and the outer surface that inside and outside nested first medium cylinder 31 and 32, two medium cylinders 31 of second medium cylinder, 32 all have the face of cylinder.Response unit is positioned on the external cylindrical surface of second medium cylinder 32, and the external diameter of second medium cylinder 32 is 20mm, and each response unit is the square metal sheet that shakeouts into the plane.The resonance frequency that records the first mode of this cavity body filter is 1.1860GHz, and the Q value is 1379.
Can be found out by above-mentioned two Comparative Examples, on the face of cylinder of medium body, response unit is set, can reduce resonance frequency, for example reduce 180MHz in this Comparative Examples, but the loss of Q value is too large.
In another embodiment, the external diameter of second medium cylinder 32 is decreased to 8mm, and response unit also is the sheet metal identical with above-mentioned example after shakeouing, arranging as shown in figure 13.The resonance frequency that records the first mode of this cavity body filter is 0.9798GHz, and the Q value is 2887.
This shows, response unit is arranged on the position of axis, the close face of cylinder, the resonance frequency that obtains is lower, and the Q value is also relatively high simultaneously.
In order further to improve the Q value, can suitably reduce the quantity of response unit.For example shown in Figure 14, on the basis of embodiment shown in Figure 13, other condition parts reduce upper and lower two row response units, and the resonance frequency that records cavity body filter is 1.0896GHz, and the Q value is 4626.The size of the response unit on preferred each face of cylinder is successively decreased with the increase of face of cylinder diameter.
In addition, in the utility model, preferred described response unit 4 is anisotropic structure.Anisotropy herein is isotropic opposite.Isotropism, refer to a stereochemical structure, have three mutually perpendicular planes of symmetry in twos, this stereochemical structure is so that wherein the arbitrary plane of symmetry is symmetrical, and this stereochemical structure is identical and partially overlap with adjacent one after the boundary line 90-degree rotation of any two planes of symmetry by eight parts of these three plane of symmetry cuttings simultaneously.The structure that does not meet this requirement is anisotropic structure very.For example very thin thickness, the structure that is approximately the plane must be anisotropic structure, and response unit of the present utility model, the structure of preferred almost plane, thus be anisotropic structure.
The utility model also relates to a kind of electromagnetic wave device with above-mentioned cavity body filter, and this electromagnetic wave device can be the equipment that the various needs such as aircraft, base station, radar, satellite are used cavity body filter.These electromagnetic wave devices can receive and transmitted signal, and carry out filtering after receiving or before sending, so that institute's signal of receiving or sending satisfies the demands, so electromagnetic wave device at least also comprises the signal emission module that is connected with the input of cavity body filter, the signal receiving module that is connected with the output of cavity body filter.
For example, as shown in figure 15, electromagnetic wave device is the base station, and the base station comprises the duplexer as filtering device, and duplexer comprises post a letter band pass filter and collection of letters band pass filter.The input of band pass filter of posting a letter connects sender, and output connects 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, and signal receiving module is receiver.Posting a letter, at least one is above-mentioned cavity body filter in band pass filter and collection of letters band pass filter, can effectively reduce the volume of duplexer, and then be conducive to the base station miniaturization.
In sum, harmonic oscillator of the present utility model utilizes response unit to improve dielectric constant, thereby effectively reduces the volume of filter when realizing the situation of identical resonance frequency; In addition, because response unit is attached on the face of cylinder, effectively eddy current loss has even been avoided in minimizing, thereby avoids the Q value reduction that brings because introducing response unit that electric conducting material makes.
The above is described embodiment of the present utility model by reference to the accompanying drawings; but the utility model 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 utility model; not breaking away from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (32)
1. a harmonic oscillator, is characterized in that, described harmonic oscillator comprises:
The medium body, this medium body has the face of cylinder;
Be attached at least one response unit on the described face of cylinder;
Wherein, described response unit is the structure with geometrical pattern that electric conducting material is made.
2. harmonic oscillator according to claim 1, is characterized in that, described response unit presents positive equivalent refractive index at elect magnetic field corresponding to the operating frequency of described harmonic oscillator.
3. harmonic oscillator according to claim 1, is characterized in that, described response unit has a plurality of and is not electrically connected to mutually.
4. harmonic oscillator according to claim 1, is characterized in that, described medium body has a plurality of coaxial and inside and outside nested faces of cylinder, is attached with one or more described response units on one of them face of cylinder.
5. harmonic oscillator according to claim 4, it is characterized in that, described response unit is positioned on one or more faces of cylinder of diameter less than the first preset value, the face of cylinder that described the first preset value is less than or equal to the outermost face of cylinder and innermost layer in described a plurality of face of cylinder both the diameter sum 90%.
6. harmonic oscillator according to claim 4, is characterized in that, described response unit is arranged on a face of cylinder of described a plurality of faces of cylinder innermost layer.
7. harmonic oscillator according to claim 4, is characterized in that, the size of the response unit on each face of cylinder is successively decreased along with the increase of face of cylinder diameter.
8. harmonic oscillator according to claim 1, it is characterized in that, described medium body comprises a plurality of inside and outside nested cylinder shape medium cylinders, and inner surface and the outer surface of each described medium cylinder are the face of cylinder, are attached with described response unit on the inner surface of at least one described medium cylinder or outer surface.
9. harmonic oscillator according to claim 1, is characterized in that, the operating frequency of described harmonic oscillator is higher than the plasma frequency of described response unit or lower than the higher order resonances frequency after described plasma frequency.
10. harmonic oscillator according to claim 1, is characterized in that, the size of described response unit is less than the corresponding electromagnetic wavelength of the operating frequency of described harmonic oscillator.
11. harmonic oscillator according to claim 1 is characterized in that, the size of described response unit is less than 1/2nd of the corresponding electromagnetic wavelength of operating frequency of described harmonic oscillator.
12. harmonic oscillator according to claim 1 is characterized in that, the size of described response unit is less than 1/5th of the corresponding electromagnetic wavelength of operating frequency of described harmonic oscillator.
13. harmonic oscillator according to claim 1 is characterized in that, described medium body by dielectric constant greater than 1, loss tangent makes less than 0.1 material.
14. harmonic oscillator according to claim 1 is characterized in that, described medium body by dielectric constant greater than 10, loss tangent makes less than 0.01 material.
15. harmonic oscillator according to claim 1 is characterized in that, described medium body by dielectric constant greater than 30, loss tangent makes less than 0.001 material.
16. harmonic oscillator according to claim 1 is characterized in that, described medium body is made by microwave-medium ceramics.
17. harmonic oscillator according to claim 1 is characterized in that, described electric conducting material is metal material.
18. harmonic oscillator according to claim 17 is characterized in that, described electric conducting material is gold, silver, copper, and perhaps described electric conducting material is the alloy that contains gold, silver or copper.
19. harmonic oscillator according to claim 1 is characterized in that, described electric conducting material is nonmetallic materials.
20. harmonic oscillator according to claim 21 is characterized in that, described electric conducting material is indium tin oxide, Al-Doped ZnO or electrically conductive graphite.
21. harmonic oscillator according to claim 1 is characterized in that, described response unit is identical or incomplete same.
22. harmonic oscillator according to claim 21 is characterized in that, described response unit is axially upper along the described face of cylinder to be reduced gradually or increases to the centre from two ends.
23. harmonic oscillator according to claim 1 is characterized in that, described response unit is anisotropic structure.
24. a cavity body filter is characterized in that, comprises resonant cavity and the harmonic oscillator as described in claim 1 to 23 any one that is positioned at described resonant cavity.
25. cavity body filter according to claim 24, it is characterized in that, the first mode of described cavity body filter is the TM pattern, and described response unit is arranged on one or more faces of cylinder, and described one or more faces of cylinder are respectively to be extended and form along direction of an electric field by the one or more magnetic lines of force under described TM pattern.
26. cavity body filter according to claim 24 is characterized in that, the response unit of described harmonic oscillator at electric field strength on electric field strength maximum to this maximum reduces the face of cylinder between 0.5dB.
27. cavity body filter according to claim 24, it is characterized in that, described response unit is positioned on one or more faces of cylinder of diameter less than the first preset value, the face of cylinder that described the first preset value is less than or equal to the outermost face of cylinder and innermost layer in described a plurality of face of cylinder both the diameter sum 90%.
28. cavity body filter according to claim 24 is characterized in that, described cavity body filter is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
29. electromagnetic wave device, it is characterized in that, comprise signal emission module, signal receiving module and cavity body filter as described in claim 24 to 28 any one, the input of described cavity body filter is connected with described signal emission module, and output is connected with described signal receiving module.
30. electromagnetic wave device according to claim 29 is characterized in that, described electromagnetic wave device is the base station.
31. electromagnetic wave device according to claim 30, it is characterized in that, described base station comprises duplexer, and described duplexer comprises post a letter band pass filter and collection of letters band pass filter, and in described post a letter band pass filter and collection of letters band pass filter, at least one is described cavity body filter.
32. electromagnetic wave device according to claim 29 is characterized in that, described electromagnetic wave device is aircraft or radar or satellite.
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| CN 201220616556 CN202997029U (en) | 2012-11-20 | 2012-11-20 | Harmonic oscillator and cavity filter thereof, and electromagnetic wave equipment |
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| CN 201220616556 CN202997029U (en) | 2012-11-20 | 2012-11-20 | Harmonic oscillator and cavity filter thereof, and electromagnetic wave equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022624A (en) * | 2012-11-20 | 2013-04-03 | 深圳光启创新技术有限公司 | Harmonic oscillator as well as cavity filter and electromagnetic wave equipment thereof |
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2012
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022624A (en) * | 2012-11-20 | 2013-04-03 | 深圳光启创新技术有限公司 | Harmonic oscillator as well as cavity filter and electromagnetic wave equipment thereof |
| CN103022624B (en) * | 2012-11-20 | 2014-02-19 | 深圳光启创新技术有限公司 | Harmonic oscillator as well as cavity filter and electromagnetic wave equipment thereof |
| WO2014079280A1 (en) * | 2012-11-20 | 2014-05-30 | 深圳光启创新技术有限公司 | Harmonic oscillator and cavity filter and electromagnetic wave device thereof |
| US9711832B2 (en) | 2012-11-20 | 2017-07-18 | Kuang-Chi Innovative Technology Ltd. | Harmonic oscillator and cavity filter and electromagnetic wave device thereof |
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