CN102832437B - Medium harmonic oscillator, microwave device and microwave equipment - Google Patents
Medium harmonic oscillator, microwave device and microwave equipment Download PDFInfo
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- CN102832437B CN102832437B CN201210222169.2A CN201210222169A CN102832437B CN 102832437 B CN102832437 B CN 102832437B CN 201210222169 A CN201210222169 A CN 201210222169A CN 102832437 B CN102832437 B CN 102832437B
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Abstract
The invention relates to a medium harmonic oscillator which comprises a medium body and artificial microstructural sets respectively attached onto two end parts or one end part of the medium body, wherein each artificial microstructure set comprises at least one artificial microstructure, and each artificial microstructure is a structure with a geometric pattern formed by a sheet-shaped electric material or a wire-shaped electric material. The invention further relates to microwave device and microwave equipment with the medium harmonic oscillator. The medium harmonic oscillator provided by the invention has the artificial microstructures, a higher dielectric constant is obtained, the resonant frequency is reduced, and the medium harmonic oscillator is distributed at two ends of the medium body, i.e. the positions with weaker electromagnetic fields, so that the loss can be reduced, and a higher Q value can be kept, therefore, the size of the harmonic oscillator body, and the sizes of the microwave device and the microwave equipment with the harmonic oscillator body can be greatly reduced under the condition of equivalent resonant frequency.
Description
Technical field
The present invention relates to microwave regime, more particularly, relate to a kind of dielectric resonance, microwave device and microwave equipment.
Background technology
Dielectric resonance has the advantages such as volume is little, quality light, quality factor (Q value) height, good stability, and be convenient to especially be applied in the various microwave device such as dielectric filter, duplexer, development in recent years is very fast.Conventional dielectric resonance is all the ceramic block of a homogeneous usually, gangs up filter on volume, have miniaturized advantage by its obtained dielectric filter than wire chamber.But the technology of ceramic resonance convergence is ripe, further miniaturization be very difficult in existing Ceramic Dielectric Filter.Meta Materials technology is applied in ceramic dielectric harmonic oscillator, further miniaturization can be realized, because Meta Materials can reach the dielectric constant higher than ceramic dielectric, thus reduce the resonance frequency of resonant cavity; In other words, under the condition realizing identical resonance frequency, the Meta Materials of high-k can reduce the volume of resonant cavity, thus realizes further miniaturized.
Meta Materials comprises medium substrate and is attached to medium substrate on the surface and periodic arrangement, separate man-made microstructure, man-made microstructure by metal as the electric conducting materials such as silver, copper are made, the electromagnetic wavelength that the size of each man-made microstructure will respond at Meta Materials about 1/10th or be less than 1/10th.Each man-made microstructure to through the electric field of this micro-structural, especially can be in this micro-structural institute electric field in the plane and produces response, formation equivalent capacity, thus improve the dielectric constant of whole Meta Materials.But alternating magnetic field, forming induced current at each artificial microstructure portion through during man-made microstructure thus produce loss, is unfavorable for the Q value keeping dielectric resonance higher.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of dielectric constant is high, Q value reducing amount is few, volume is little dielectric resonance, microwave device and microwave equipment.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of dielectric resonance, comprise medium body and be attached to described end, medium body two ends or the man-made microstructure group wherein on end, one end respectively, described man-made microstructure group comprises at least one man-made microstructure, and each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition.
In dielectric resonance of the present invention, the material of described medium body is microwave-medium ceramics.
In dielectric resonance of the present invention, described medium body end refers to that the relatively little medium body part of volume that described medium body obtains is gone to cut in cross section that the distance using one of them end face is not more than medium body total height 1/3rd.
In dielectric resonance of the present invention, on the end face that described man-made microstructure group is attached to described medium body end or be attached to be parallel to described end face plane on.
In dielectric resonance of the present invention, on the side surface that described man-made microstructure group is attached to described medium body two ends or be attached to be parallel to described side surface curved surface on.
In dielectric resonance of the present invention, described medium body is formed by stacking to the other end by multiple identical dieelctric sheet one end along medium body, and the one or more dieelctric sheets being positioned at end, described medium body two ends are attached with described man-made microstructure group on the surface.
In dielectric resonance of the present invention, described medium body is cylindrical shape, and the end face of described medium body end is annular, and each described dieelctric sheet is annular.
In dielectric resonance of the present invention, the described man-made microstructure group on each described dieelctric sheet surface comprises multiple man-made microstructure pair, and described multiple man-made microstructure to the center of circle of annular dieelctric sheet for the center of circle partially forms a circle.
In dielectric resonance of the present invention, sheathedly inside and outside multiple medium cylinders that described medium body is reduced successively by bore to form, the end, side surface two ends being positioned at outer field one or more medium cylinder is attached with described man-made microstructure group.
In dielectric resonance of the present invention, described medium body is reeled by medium belt and forms, the edge, both sides of described medium belt end is attached with respectively a man-made microstructure group, described man-made microstructure group comprises the multiple man-made microstructure be arranged in a row along described medium belt length direction.
In dielectric resonance of the present invention, described electric conducting material is silver, copper, silver alloy, copper alloy, indium tin oxide, Al-Doped ZnO or electrically conductive graphite.
The invention still further relates to a kind of microwave device, there is microwave cavity and dielectric resonance being placed in described microwave cavity, described dielectric resonance attached bag is drawn together medium body and is attached to described end, medium body two ends or the man-made microstructure group wherein on end, one end respectively, described man-made microstructure group comprises at least one man-made microstructure, and each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition.
In microwave device of the present invention, described microwave device is filter or duplexer.
The invention still further relates to a kind of microwave equipment, there is the microwave device processed microwave, described microwave device has microwave cavity and is placed in dielectric resonance of described microwave cavity, comprise medium body and be attached to described end, medium body two ends or the man-made microstructure group wherein on end, one end respectively, described man-made microstructure group comprises at least one man-made microstructure, and each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition.
In microwave equipment of the present invention, described microwave equipment is microwave oven, base station, radar or aircraft.In microwave equipment of the present invention, described microwave equipment is microwave oven, base station, radar or aircraft.
Implement dielectric resonance of the present invention, microwave device and microwave equipment, there is following beneficial effect: dielectric resonance of the present invention can obtain higher dielectric constant, reduce resonance frequency owing to having man-made microstructure, be distributed in the two ends of medium body and the more weak position of electromagnetic field can reduce the wastage, keep higher Q value simultaneously, therefore greatly can reduce the volume of harmonic oscillator itself and there is the microwave device of this dielectric resonance, the volume of microwave equipment under the condition realizing equal resonance frequency.
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 dielectric resonance of first embodiment of the invention;
Fig. 2 be the filter with of dielectric resonance shown in Fig. 1 partly cut open figure;
Fig. 3 is a kind of structural representation of man-made microstructure;
Fig. 4 is the structural representation of another kind of man-made microstructure;
Fig. 5 be the filter of dielectric resonance with the second embodiment partly cut open figure;
Fig. 6 be dielectric resonance of third embodiment of the invention partly cut open figure;
Fig. 7 is the vertical view of of dielectric resonance shown in Fig. 6.
Embodiment
The present invention relates to a kind of dielectric resonance, as shown in Figure 1 and Figure 2, comprise medium body 3 and to be attached on end, medium body 3 two ends or man-made microstructure group 4 wherein on end, one end.Wherein, medium body 3 is preferably made up of the existing microwave-medium ceramics being used for manufacturing dielectric resonance, known BaTi
4o
9, Ba
2ti
9o
20, MgTiO
3-CaTiO
3, BaO-Ln
2o
3-TiO
2system, Bi
2o
3-ZnO-Nb
2o
5systems etc., also can select the material that other dielectric constants are relatively high, loss angle tangent is relatively little, such as F4B material, FR-4 material etc. certainly.
Man-made microstructure group comprises at least one man-made microstructure 4, and each man-made microstructure 4 is the structure with geometrical pattern of sheet or thread electric conducting material composition.Sheet man-made microstructure 4 can be square shape sheet, disc, annular or other laminated structures as shown in Figure 1, and thread man-made microstructure can be the structure etc. of the center of circle partially annular spread around same fixed point for the identical serpentine of I-shaped orthogonal structure, as shown in Figure 4 four divided equally of helix, serpentine line, I-shaped, cross, as shown in Figure 3 two.Multiple man-made microstructure of each man-made microstructure group can be arranged into a rectangular array, and also can circularly arrange, also can Arbitrary distribution, determine according to the actual requirements.Above-mentioned electric conducting material comprises the good metal of various electric conductivity and metal alloy, such as silver, copper, silver alloy, copper alloy; Electric conducting material also can be the nonmetallic materials that can conduct electricity, such as indium tin oxide, Al-Doped ZnO or electrically conductive graphite etc.
The existence of man-made microstructure group and man-made microstructure 4 thereof, when dielectric resonance is worked in microwave cavity, electric field in dielectric resonance passes through or passes man-made microstructure 4, form equivalent capacity, thus be equivalent to the dielectric constant that improve dielectric resonance, reduce resonance frequency, be conducive to the miniaturization of microwave cavity.
Inventive point of the present invention is, on the end, two ends that man-made microstructure group is attached to medium body 3 or wherein on end, one end, here end refers to that the relatively little medium body part of volume that medium body obtains is gone to cut in cross section that the distance using one of them end face is not more than 1/3rd of medium body total height, is exactly an end at this end face place.In fact, it is better that cross section intercepts the closer to end face, and end is preferably the medium body part between each end face and the cross section being less than medium body total height 1/5th to this end face distance.Here two end faces, namely along end face and the bottom surface of short transverse; Short transverse, refer to this dielectric resonance be placed in microwave cavity work and microwave cavity horizontal positioned, input/output terminal also level time this medium body vertical direction.
Man-made microstructure group being attached on the end of medium body 3, is in order to Loss reducing.Because, when dielectric resonance is placed in the work of microwave cavity centre, two ends electromagnetic field from from dielectric resonance subcenter (being also microwave cavity center) to short transverse weakens gradually, magnetic field is stronger, and the loss caused when man-made microstructure 4 is larger, the end of medium body 3 is away from dielectric resonance subcenter, therefore man-made microstructure 4 is attached to the may of medium body 3 in reducing the loss because man-made microstructure 4 causes, and puies forward high q-factor, and then is conducive to the miniaturization of microwave cavity.Simultaneously, dielectric resonance from namely its axis (also microwave cavity axis) radially outward electromagnetic field weaken gradually, therefore man-made microstructure is attached to the side surface of medium body outside or is conducive to reducing the loss brought because of man-made microstructure 4 close to the position of side surface.Man-made microstructure group of the present invention is preferably attached to end, medium body two ends and is on the position of medium body 3 side surface or close side surface.
Dielectric resonance of the first embodiment, as shown in Figure 2, medium body 3 is cylindrical, and centre is provided with the through hole of concentrically line, has two man-made microstructure groups, is attached to respectively on the end face of end, medium body 3 two ends, be respectively top end face and bottom face.As shown in Figure 1, each man-made microstructure group comprises multiple identical man-made microstructure pair, these man-made microstructure to be the center of circle with the center of circle of end face, arrangement mode that arbitrary neighborhood two man-made microstructure is all equal to formed central angle forms a circle, and the right center of man-made microstructure is not less than 1/2nd of medium body 3 radius to the distance in the above-mentioned center of circle, preferably be not less than 2/3rds of this radius, with the side surface (the namely outside face of cylinder) as far as possible near medium body 3, the electromagnetic field at this place is relatively weak, and the loss therefore produced is also less.Each man-made microstructure is to comprising two identical and parallel square shape sheet man-made microstructure 4 side by side.
The medium body 3 of the first embodiment is integrated by microwave-medium ceramics, as shown in Figure 5, medium body 3 also can be formed by stacking to the other end by multiple identical dieelctric sheet one end along medium body, certainly, the shape of each dieelctric sheet, highly to can be the same or different.In the present embodiment, medium body 3 is cylindrical shape, and the end face of medium body 3 two ends is annular, and each dieelctric sheet is also annular.
The one or more dieelctric sheets being positioned at medium body two ends are attached with described man-made microstructure group on the surface, also namely man-made microstructure group be positioned at medium body end face on and be parallel in the plane of end face.
In dielectric resonance shown in Fig. 5, dieelctric sheet one has eight, the two panels of the superiors and the surface of undermost two panels are attached with man-made microstructure group as shown in Figure 1, namely each man-made microstructure group comprises multiple man-made microstructure pair, and these man-made microstructure to the center of circle of annular dieelctric sheet for the center of circle partially forms a circle.
Dielectric resonance of first, second embodiment above-mentioned usually be all the harmonic oscillator of TE pattern, because electric field is horizontal circle during TE pattern, and can fully through man-made microstructure thus raising dielectric constant; And for the harmonic oscillator of TM pattern, electric field centrally axially outer around, being vertical direction substantially through the dielectric resonance period of the day from 11 p.m. to 1 a.m, therefore for the harmonic oscillator of TM pattern, in order to improve dielectric constant as much as possible, needing to make man-made microstructure become vertical direction.
Therefore, in the third embodiment, as shown in Figure 6, Figure 7, multiple medium cylinders that medium body 3 is reduced successively by bore are from inside to outside sheathed successively to be formed, and the side surface two ends being positioned at outer field one or more medium cylinder are attached with described man-made microstructure group.Each man-made microstructure group is attached in the cylindrical side of the end, two ends of outermost one deck or which floor medium cylinder, comprises multiple man-made microstructure pair equally, and each man-made microstructure is to having two identical square shape sheet man-made microstructure 4.
Obtain the man-made microstructure of vertical direction, also can by by bonding or sinter medium body into after a medium belt winding, the edge, both sides of medium belt end is attached with man-made microstructure group, then the sub-side surface of the dielectric resonance made and be parallel to side surface and also can adhere to into the man-made microstructure 4 of vertical direction in the curved inner surface of side surface.
Adopt dielectric resonance of said structure, the existence of man-made microstructure can improve harmonic oscillator dielectric constant, reduce resonance frequency while, man-made microstructure 4 is arranged on the relatively weak medium body two ends of electromagnetic field field intensity and close outer surface, the loss because electromagnetic field produces through man-made microstructure can be reduced, improve the Q value of harmonic oscillator.
The present invention also protects the microwave device with above-mentioned dielectric resonance; as shown in Fig. 2, Fig. 5; microwave device shown in figure is filter, comprise cover 1 microwave cavity surrounded by cavity 2 and chamber, be contained in input on two sidewalls faced of cavity 2 and output, inner Centromedian dielectric resonance of cavity 2 and the supporting base 5 that supports bottom harmonic oscillator.In horizontal direction, the axis of dielectric resonance is also short transverse is vertical direction to the axis of input, output.In filter shown in Fig. 2, the top end face of medium body 3 and bottom face are attached with the man-made microstructure group that multiple man-made microstructure 4 is formed respectively.In filter shown in Fig. 5, medium body 3 both ends are respectively two dieelctric sheets of the superiors and undermost two dieelctric sheets, and their surface is all attached with man-made microstructure group.
There is the filter of this dielectric resonance, relative to the dielectric filter of equal resonance frequency, because the dielectric constant of dielectric resonance obviously reduces, therefore when realizing identical resonance frequency, volume can do less, thus be conducive to the miniaturization of filter, consumptive material can also be reduced, reduce costs.
Certainly, microwave device of the present invention can be any components and parts utilizing microwave cavity and dielectric resonance to realize carrying out the microwave of certain band limits certain process, and can be not only filter, also can be duplexer or other components and parts.
The present invention also protects the microwave equipment with above-mentioned microwave device; this equipment has multiple various interrelated, interactional functional module and realizes a comparatively complicated purposes, and has used above-mentioned microwave device in one or more functional module and process microwave.Such microwave equipment has a lot, such as microwave oven, base station, radar or aircraft etc.These microwave equipments, have employed above-mentioned microwave device, can reduce the volume and weight of Whole Equipment, and its purposes is played better.
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; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. dielectric resonance, it is characterized in that, comprise medium body and be attached to the man-made microstructure group on end, described medium body two ends respectively, described man-made microstructure group comprises multiple man-made microstructure, each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition, on the end face that described man-made microstructure group is attached to described medium body end or be attached to be parallel to described end face plane on, wherein
Described medium body is formed by stacking to the other end by multiple identical dieelctric sheet one end along medium body, the one or more dieelctric sheets being positioned at end, described medium body two ends are attached with described man-made microstructure group on the surface, described medium body is cylindrical shape, the end face of described medium body end is annular, each described dieelctric sheet is annular, described man-made microstructure group on each described dieelctric sheet surface comprises multiple man-made microstructure pair, and described multiple man-made microstructure to the center of circle of annular dieelctric sheet for the center of circle partially forms a circle.
2. dielectric resonance according to claim 1, it is characterized in that, the material of described medium body is microwave-medium ceramics.
3. dielectric resonance according to claim 1, it is characterized in that, described medium body end refers to that the relatively little medium body part of volume that described medium body obtains is gone to cut in cross section that the distance using one of them end face is not more than medium body total height 1/3rd.
4. dielectric resonance according to claim 1, it is characterized in that, described medium body end is go to cut the medium body part that in two parts of obtaining of described medium body, volume is relatively little with a cross section, and described cross section is the plane being not more than medium body total height 1/3rd to the distance of one of them end face.
5. dielectric resonance, it is characterized in that, comprise medium body and be attached to the man-made microstructure group on end, described medium body two ends respectively, described man-made microstructure group comprises multiple man-made microstructure, each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition, on the side surface that described man-made microstructure group is attached to described medium body two ends or be attached to be parallel to described side surface curved surface on, wherein, multiple medium cylinders that described medium body is reduced successively by bore are from inside to outside sheathed successively to be formed, the side surface two ends being positioned at outer field one or more medium cylinder are attached with described man-made microstructure group, each man-made microstructure group is attached in the cylindrical side of the end, two ends of outermost one deck or which floor medium cylinder, described each man-made microstructure group comprises multiple man-made microstructure pair, each man-made microstructure is to having two identical square shape sheet man-made microstructure.
6. dielectric resonance, it is characterized in that, comprise medium body and be attached to the man-made microstructure group on end, described medium body two ends respectively, described man-made microstructure group comprises multiple man-made microstructure, each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition, on the side surface that described man-made microstructure group is attached to described medium body two ends or be attached to be parallel to described side surface curved surface on, wherein, described medium body is reeled by medium belt and forms, the edge, both sides of described medium belt end is attached with respectively a man-made microstructure group, described man-made microstructure group comprises the multiple man-made microstructure be arranged in a row along described medium belt length direction.
7. a microwave device, there is microwave cavity and dielectric resonance being placed in described microwave cavity, it is characterized in that, described dielectric resonance attached bag is drawn together medium body and is attached to the man-made microstructure group on end, described medium body two ends respectively, described man-made microstructure group comprises multiple man-made microstructure, each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition, on the end face that described man-made microstructure group is attached to described medium body end or be attached to be parallel to described end face plane on, wherein
Described medium body is formed by stacking to the other end by multiple identical dieelctric sheet one end along medium body, the one or more dieelctric sheets being positioned at end, described medium body two ends are attached with described man-made microstructure group on the surface, described medium body is cylindrical shape, the end face of described medium body end is annular, each described dieelctric sheet is annular, described man-made microstructure group on each described dieelctric sheet surface comprises multiple man-made microstructure pair, and described multiple man-made microstructure to the center of circle of annular dieelctric sheet for the center of circle partially forms a circle.
8. microwave device according to claim 7, is characterized in that, described microwave device is filter or duplexer.
9. a microwave equipment, there is the microwave device processed microwave, described microwave device has microwave cavity and is placed in dielectric resonance of described microwave cavity, it is characterized in that, described dielectric resonance attached bag is drawn together medium body and is attached to the man-made microstructure group on end, described medium body two ends respectively, described man-made microstructure group comprises multiple man-made microstructure, each described man-made microstructure is the structure with geometrical pattern of sheet or thread electric conducting material composition, on the end face that described man-made microstructure group is attached to described medium body end or be attached to be parallel to described end face plane on, wherein,
Described medium body is formed by stacking to the other end by multiple identical dieelctric sheet one end along medium body, the one or more dieelctric sheets being positioned at end, described medium body two ends are attached with described man-made microstructure group on the surface, described medium body is cylindrical shape, the end face of described medium body end is annular, each described dieelctric sheet is annular, described man-made microstructure group on each described dieelctric sheet surface comprises multiple man-made microstructure pair, and described multiple man-made microstructure to the center of circle of annular dieelctric sheet for the center of circle partially forms a circle.
10. microwave equipment according to claim 9, is characterized in that, described microwave equipment is microwave oven, base station, radar or aircraft.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101299481A (en) * | 2007-05-02 | 2008-11-05 | M/A-Com公司 | Cross coupling tuning apparatus for dielectric resonator circuit |
| CN202275913U (en) * | 2011-07-29 | 2012-06-13 | 深圳光启高等理工研究院 | Resonant cavity |
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| US7570432B1 (en) * | 2008-02-07 | 2009-08-04 | Toyota Motor Engineering & Manufacturing North America, Inc. | Metamaterial gradient index lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299481A (en) * | 2007-05-02 | 2008-11-05 | M/A-Com公司 | Cross coupling tuning apparatus for dielectric resonator circuit |
| CN202275913U (en) * | 2011-07-29 | 2012-06-13 | 深圳光启高等理工研究院 | Resonant cavity |
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