CN102694227A - Coaxial dual-mode resonator and filter - Google Patents
Coaxial dual-mode resonator and filter Download PDFInfo
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- CN102694227A CN102694227A CN2012100794191A CN201210079419A CN102694227A CN 102694227 A CN102694227 A CN 102694227A CN 2012100794191 A CN2012100794191 A CN 2012100794191A CN 201210079419 A CN201210079419 A CN 201210079419A CN 102694227 A CN102694227 A CN 102694227A
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- 230000008878 coupling Effects 0.000 claims abstract description 73
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- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 238000005192 partition Methods 0.000 claims description 27
- 230000001105 regulatory effect Effects 0.000 claims description 27
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 239000000523 sample Substances 0.000 description 8
- 230000005684 electric field Effects 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The invention provides a coaxial dual-mode resonator which possesses a smaller size, a lower height and lower loss compared to the prior coaxial dual-mode resonator. The coaxial dual-mode resonator possesses the components as following: an external conductor; a tabulate internal conductor which is arranged in the external conductor, wherein the flat shape of the internal conductor possesses a pair of edges along the X-axis direction perpendicular with a pair of edges along the Y-axis direction, the internal conductor possesses a first resonant mode along the X-axis direction and a second resonant mode along the Y-axis direction, the coaxial dual-mode resonator possesses a column (an insulative column or a metal column) which fixes the center of the quadrangle of the internal conductor with the external conductor, one of the four angles of the quadrangle is conversed. The coaxial dual-mode resonator possesses an input terminal which is arranged at any surface of the external conductor coupling to the first resonent mode of the internal conductor and an output terminal which is arranged at the surface of the external conductor and coupling to the second resonent mode of the internal conductor.
Description
Technical field
The present invention relates to coaxial dual-mode resonator and filter, particularly, relate to coaxial dual-mode resonator and the filter that uses this coaxial dual-mode resonator that in a physical space (in the resonator) makes two mode of resonance degeneracys (degeneracy).
Background technology
In radio communication device etc., use following filter mostly, promptly used the filter that has the so-called monotype resonator of a mode of resonance by a resonator.In the monotype resonator, the reentrant cavity resonator that has used metal is for example arranged.This resonator is through being electrically contacted an end of columned metal, fixingly constituted by screw or soldering etc. in the can of external electric shielding with can.
The monotype resonator is disposed in the cut-off waveguide when constituting filter, and through being coupled or field coupled with adjacent resonator magnetic field, realizes the filtering characteristic of hoping.But, owing to only have a kind of mode of resonance by a resonator, so when essential a plurality of pattern etc., in order to increase the progression of filter, also to increase the quantity of essential resonator, thereby the problem that exists filter self to maximize.
Given this, the so-called multiplex mode resonator that has a plurality of modes of resonance by a resonator is also used in motion.In the multi-vibration-mode filter that utilizes the multiplex mode resonator, through utilizing plural mode of resonance by a resonator, the quantity of the whole necessary resonator that cuts filter.The multiplex mode resonator for example is documented in following patent documentation 1 grade.
Patent documentation 1: No. the 3699090th, japanese
Though existing reentrant cavity resonator uses columned inner conductor, cylindrical inside produces useless space.For this reason, in existing reentrant cavity resonator, be difficult to seek miniaturization, low formization.On the other hand; In the multi-vibration-mode filter that utilizes the multiplex mode resonator, though through utilizing plural mode of resonance by a resonator, the quantity of the whole necessary resonator that cuts filter; But, in multi-vibration-mode filter, also be difficult to seek low formization.
Summary of the invention
The present invention develops in order to solve above-mentioned prior art problems point; The objective of the invention is to; Provide a kind of and existing reentrant cavity resonator to compare, small-sized, low form, and lose low coaxial dual-mode resonator and the filter that uses this coaxial dual-mode resonator.
Utilize the record and the accompanying drawing of this specification can clear and definite above-mentioned and other purpose and new feature of the present invention.
If the summary of the representative device in the application's invention disclosed is described simply, then for being described below.
(1) a kind of coaxial dual-mode resonator has: external conductor; And flat inner conductor; It is disposed at the inside of said external conductor; The flat shape of said inner conductor be have X-direction an opposite side and with the quadrangle form of an opposite side of the Y direction of said X-direction quadrature; Said inner conductor has in first mode of resonance of said X-direction resonance with in second mode of resonance of said Y direction resonance; This coaxial dual-mode resonator has the pillar (insulating properties pillar or metal mainstay) that the central part of the inner conductor of said quadrangle form is fixed in said external conductor, and a bight chamfering in four bights of the inner conductor of said quadrangle form has: input terminal; It is arranged at any one side of said external conductor, and is coupled with said first mode of resonance of said inner conductor; And lead-out terminal, it is arranged at the face beyond the face that is provided with said input terminal of said external conductor, and is coupled with said second mode of resonance of said inner conductor.
(2) in (1); Have the bimodulus coupling amount adjusting that is arranged at said external conductor and use screw; Said bimodulus coupling amount is regulated with the part of the chamfering of screw and said inner conductor opposed, regulates the insertion amount with screw, the coupling amount of regulating said bimodulus according to said bimodulus coupling amount.
(3) in (1); Have first resonance frequency adjusting that is arranged at said external conductor and use screw with screw and the adjusting of second resonance frequency; Said first resonance frequency is regulated with the one side in the both sides of the said Y direction of screw and said inner conductor opposed; Said second resonance frequency is regulated with the one side in the both sides of the said X-direction of screw and said inner conductor opposed; Regulate the insertion amount separately with screw, the resonance frequency of regulating coaxial dual-mode resonator according to said first resonance frequency adjusting with screw and said second resonance frequency.
(4) a kind of filter at the integer that n is taken as more than 2, when j is taken as the integer below the 2 above n, possesses: external conductor; (n-1) individual partition, its inside with said external conductor is divided into n inner space; And n coaxial dual-mode resonator; It is disposed at a said n inner space; Said each coaxial dual-mode resonator has the flat inner conductor that is disposed in said each inner space; The flat shape of the inner conductor of said each coaxial dual-mode resonator be have X-direction an opposite side and with the quadrangle form of an opposite side of the Y direction of said X-direction quadrature; The inner conductor of said each coaxial dual-mode resonator has in first mode of resonance of said X-direction resonance with in second mode of resonance of said Y direction resonance, and this filter has: the pillar (insulating properties pillar or metal mainstay) that the central part of the inner conductor of the said rectangular shape of said first coaxial dual-mode resonator is fixed in said external conductor; Be fixed in the pillar (insulating properties pillar or metal mainstay) of said partition with central part with the inner conductor of the said rectangular shape of said j coaxial dual-mode resonator; A bight chamfering in four bights of the inner conductor of the said quadrangle form of said each coaxial dual-mode resonator; Have: input terminal; It is arranged at said external conductor, and is coupled with said first mode of resonance of the inner conductor of said first coaxial dual-mode resonator; And lead-out terminal, it is arranged at said external conductor, and is coupled with first mode of resonance or second mode of resonance of the inner conductor of said n coaxial dual-mode resonator.
(5) in (4); Said each coaxial dual-mode resonator has the bimodulus coupling amount adjusting that is arranged at said external conductor and uses screw; Said each bimodulus coupling amount is regulated opposed with the part of the chamfering of the said inner conductor of said each coaxial dual-mode resonator with screw; Regulate insertion amount according to said each bimodulus coupling amount, regulate the said bimodulus coupling amount of said each coaxial dual-mode resonator with screw.
(6) in (4); Said each coaxial dual-mode resonator has first resonance frequency adjusting that is arranged at said external conductor and uses screw with screw and the adjusting of second resonance frequency; Said first resonance frequency of said each coaxial dual-mode resonator is regulated with the one side in the both sides of the said Y direction of screw and said inner conductor opposed; Said second resonance frequency of said each coaxial dual-mode resonator is regulated with the one side in the both sides of the said X-direction of screw and said inner conductor opposed; Said first resonance frequency adjusting according to said each coaxial dual-mode resonator is regulated the insertion amount with screw with screw and said second resonance frequency, regulates the resonance frequency of said each coaxial dual-mode resonator.
(7) in (4), said each partition has coupling aperture.
(8) in (7), have and be arranged at said external conductor, and the coupling amount of inside that is inserted into each coupling aperture of said each partition regulates and use screw, according to the insertion amount of this coupling amount adjusting, regulate the coupling amount between said each coaxial dual-mode resonator with screw.
If representative device and the effect that obtain of Benq in the application's invention disclosed briefly is then for being described below.
According to the present invention, can provide a kind of and existing reentrant cavity resonator to compare, small-sized, low form and lose low coaxial dual-mode resonator and the filter that uses this coaxial dual-mode resonator.
Description of drawings
Fig. 1 is the schematic isometric of summary of the coaxial dual-mode resonator of the expression embodiment of the invention 1;
Fig. 2 is the in-built figure that is used to explain the coaxial dual-mode resonator of the embodiment of the invention 1;
Fig. 3 is the figure of mode of resonance that is used to explain the coaxial dual-mode resonator of the embodiment of the invention 1;
Fig. 4 is magnetic field composition and the figure of electric field composition that is used to explain the coaxial dual-mode resonator of the embodiment of the invention 1;
Fig. 5 is the circuit diagram of equivalent electric circuit of the coaxial dual-mode resonator of the expression embodiment of the invention 1;
Fig. 6 is the schematic isometric of summary of the band pass filter of the expression coaxial dual-mode resonator that used the embodiment of the invention 2;
Fig. 7 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention 2;
Fig. 8 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention 2;
Fig. 9 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention 2;
Figure 10 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention 2;
Figure 11 is the circuit diagram of equivalent electric circuit of the band pass filter of the expression coaxial dual-mode resonator that used the embodiment of the invention 2;
Figure 12 A be the expression used the embodiment of the invention 2 coaxial dual-mode resonator band pass filter through characteristic one the example chart;
Figure 12 B be the expression used the embodiment of the invention 2 coaxial dual-mode resonator band pass filter the reflection loss amount one the example chart;
Figure 13 is the figure of other example of partition of the band pass filter of the expression coaxial dual-mode resonator that used the embodiment of the invention 2.
Embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In addition,, have the identical symbol of being marked with of identical function, omit repeat specification it being used for all figure of illustrative embodiment.In addition, following embodiment is used to limit claims herein of the present invention.
(embodiment 1)
Fig. 1 is the schematic isometric of summary of the coaxial dual-mode resonator of the expression embodiment of the invention.
Fig. 2 is the in-built figure that is used to explain the coaxial dual-mode resonator of the embodiment of the invention; This figure (a) is in coaxial dual-mode resonator shown in Figure 1; The figure that sees after the top plate portion of strip off external conductor; This figure (b) is in coaxial dual-mode resonator shown in Figure 1, the figure that is seen behind the lateral parts of strip off external conductor.
In Fig. 1, Fig. 2, the 1st, the external conductor of rectangular shape, the 2nd, flat inner conductor.Inner conductor 2, its flat shape has quadrangle form, and this inner conductor 2 is fixed on metal mainstay 3 by screw etc.And metal mainstay 3 is fixed on external conductor 1 by screw etc.
At this, external conductor 1 for example is made up of silver-plated aluminium or copper-plated aluminium.In addition, inner conductor for example is made up of superinvar or silver-plated invar.And then metal mainstay 3 is made up of silver-plated aluminium or copper-plated aluminium.
In addition, the above-mentioned metal material that constitutes external conductor 1 or inner conductor 2 is an example, may not be limited to this metal material, for example can use iron etc.
In addition, though be circular situation at the cross sectional shape of metal mainstay shown in Fig. 13, the cross sectional shape of metal mainstay 3 is not limited to circle, also can be triangle, quadrangle or polygon.
In addition, in Fig. 1, Fig. 2,4 is input and output terminal, and 41 for the input and output coupling probe, and 5 regulate for resonance frequency and to use screw, and 6 use set screw for bimodulus is coupled, and 7 is chamfered section.
Fig. 3 is the figure of mode of resonance that is used to explain the coaxial dual-mode resonator of the embodiment of the invention.In the coaxial dual-mode resonator of present embodiment, shown in arrow A, arrow B, exist in the mode of resonance of two TEM patterns of both direction resonance of X axle, the Y direction of Fig. 3 among Fig. 3.
In the coaxial dual-mode resonator of present embodiment, a bight in four bights of inner conductor 2 is processed with chamfered section 7, in two kinds of resonance couplings of this part.At this, the angle of chamfered section 7 is taken as 45 °.
Fig. 4 is used for explaining the coaxial dual-mode resonator in the embodiment of the invention, and resonance directions is magnetic field composition and the figure of electric field composition under the situation of arrow A of Fig. 3.In addition, A representes the electric field composition among Fig. 4, and B representes the magnetic field composition.
The magnetic field composition (B of Fig. 4) in the yz cross section of Fig. 4 (a) presentation graphs 3 and electric field composition (A of Fig. 4), the magnetic field composition (B of Fig. 4) in the xz cross section of Fig. 4 (b) presentation graphs 3 and electric field composition (A of Fig. 4).
In the present embodiment, during wavelength, the electrical length on one side of the direction of each mode of resonance of inner conductor 2 is λ o/2 in the free space of the use centre frequency (fo) when λ o is taken as each mode of resonance.
In the coaxial dual-mode resonator of present embodiment; As shown in Figure 2; Two resonance frequencys that are formed at external conductor 1 through adjusting are regulated with screw 5 (promptly; First resonance frequency is regulated with screw and the adjusting of second resonance frequency and is used screw) insertion amount (in other words, inner conductor 3 resonant frequency adjustment are with the interval of screw 5), can regulate each resonance frequencys of two modes of resonance.
Equally, opposed and be formed at the insertion amount (in other words, the chamfered section 7 of inner conductor 3 with bimodulus be coupled with the interval of set screw 6) of the bimodulus coupling of external conductor 1 through regulating with set screw 6 with chamfered section 7, can regulate the coupling amount of two modes of resonance.
Fig. 5 representes the equivalent electric circuit of the coaxial dual-mode resonator of the embodiment of the invention.Among Fig. 5; M1, M2 represent each resonant circuit of dual-mode resonator; C01 representes to be connected in the coupling circuit of a resonator of input and output coupling probe and the coaxial dual-mode resonator of input and output terminal 4; C12 representes the coupling circuit of another resonator of a resonator and the coaxial dual-mode resonator of coaxial dual-mode resonator, and C23 representes another resonator and the coupling circuit that is connected in the input and output coupling probe of input and output terminal 4 of coaxial dual-mode resonator.
Point as the characteristic of the coaxial dual-mode resonator of present embodiment is; Through metal mainstay 3 inner conductor 2 is fixed on external conductor 1; Thus, the heat that will be produced by inner conductor 2 is discharged into outside this point efficiently via metal mainstay 3, external conductor 1.
In the coaxial dual-mode resonator of present embodiment, the electrical length on one side of the direction of each mode of resonance of inner conductor 2 is taken as λ o/2.For this reason, the central point of inner conductor 2, its voltage become 0 (earthing potential).At this,, also can exert an influence to bimodulus resonance hardly even the central part of inner conductor 2 is fixed on external conductor 1 through metal mainstay 3.But, if increase the diameter of metal mainstay 3, then bimodulus resonance is exerted an influence, therefore, the diameter of metal mainstay 3 is necessary the design specification according to coaxial dual-mode resonator, is set in only value.
At this, shown in Fig. 2 (a), when setting the thickness (d) of inner conductor 2, the zero load Q (Qu) of coaxial dual-mode resonator changes according to the thickness (d) of inner conductor 2.Therefore, the thickness of inner conductor 2 (d) is necessary to be set in only value according to the necessary zero load Q of coaxial dual-mode resonator (Qu).
As described above, according to the coaxial dual-mode resonator of present embodiment, compare with existing reentrant cavity resonator, can seek low formization, miniaturization.That is, existing reentrant cavity resonator uses columned inner conductor usually, but cylindrical inside can produce useless space.Given this, in the coaxial dual-mode resonator of present embodiment, because can be through using flat inner conductor 2; Useless irreducible minimum ground, space is formed; So, compare with existing reentrant cavity resonator, can seek low formization, miniaturization; Simultaneously owing to simple structure, so also can realize cost degradation.And then in the present embodiment, the size of the direction in length and breadth through making inner conductor 2 cooperates with each resonance frequency, as can dual degeneracy, and then can seek miniaturization.
In addition, in the multiplex mode resonator of in above-mentioned patent documentation 1, putting down in writing, owing to use the inner wire piece; So be difficult to seek low formization, still, according to the coaxial dual-mode resonator of present embodiment; Through using flat inner conductor 2; Useless irreducible minimum ground, space is formed,, can seek low formization so compare with the multiplex mode resonator of patent documentation 1 record.
In addition, in patent documentation 1, in the multiplex mode resonator of record,, be difficult to the heat that produces by the inner wire piece to outside heat release owing to be necessary that dielectric etc. are supported with the electric non-contacting state of outer conductor the inner wire piece to be set.
Given this, in the coaxial dual-mode resonator of present embodiment, owing to inner conductor 2 is fixed on external conductor 1 through metal mainstay 3, so, can the heat that produced by inner conductor 2 be discharged into the outside efficiently via metal mainstay 3, external conductor 1.
In addition, if increase the diameter of metal mainstay 3, then exothermal effect just increases, but the zero load Q (Qu) of resonator reduction, in addition, if reduce the diameter of metal mainstay 3, then exothermal effect just reduces, but the zero load Q (Qu) of resonator increases.Therefore, the diameter of metal mainstay 3 is necessary to be set in only value according to the necessary zero load Q of coaxial dual-mode resonator (Qu).
(embodiment 2)
Fig. 6 is the schematic isometric of summary of the band pass filter of the expression coaxial dual-mode resonator that used the embodiment of the invention 2.
Fig. 7 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention, is the figure that is seen behind the lateral parts of strip off external conductor in filter shown in Figure 6.
In Fig. 6, Fig. 7,1 is external conductor, and 21,22,23 is inner conductor, and 3 is metal mainstay, and 4 is input and output terminal, and 6 use set screw for bimodulus coupling, and 8 use screw for the adjusting of coupling amount, and 91,92 is partition.
The filter of present embodiment 2 is characterised in that, three grades of range upon range of coaxial dual-mode resonators that the foregoing description is arranged.
The flat shape of inner conductor (21,22,23) has quadrangle form, and inner conductor (21,22,23) is fixed on metal mainstay 3 by screw etc.
Through be fixed on the metal mainstay 3 of external conductor 1 by screw etc., first order inner conductor 21 is fixed on external conductor 1.Through be fixed on the metal mainstay 3 of partition 91 by screw etc., partial inner conductor 22 is fixed on partition 91, and through being fixed on the metal mainstay 3 on the partition 92 by screw etc., the inner conductor 23 of the third level is fixed on partition 92.
In the band pass filter of present embodiment, the electrical length on one side of the direction of each mode of resonance of the inner conductor 2 of each coaxial dual-mode resonator is taken as λ o/2.In addition, external conductor 1 and inner conductor (21,22,23) are by constituting with the above embodiments 1 identical metal material.In addition, in the present embodiment, metal mainstay 3 is circle, triangle, quadrangle or polygonal metal mainstay for cross sectional shape also.
Fig. 8 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention, is the in-built figure that is used to explain the coaxial dual-mode resonator of the first order.The internal structure of the coaxial dual-mode resonator of the first order is identical with the internal structure of the coaxial dual-mode resonator of the above embodiments.
Fig. 9 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention, and this figure (a) is the in-built figure that is used to explain the coaxial dual-mode resonator in the second level, and this figure (b) is the figure that is used to explain partition 91.
As stated; Though second level inner conductor 22 is fixed on partition 91 through metal mainstay 3; But shown in Fig. 9 (b), on partition 91, be formed with the coupling aperture 10 of arbitrary mode of resonance of the coaxial dual-mode resonator of the arbitrary mode of resonance and the second level of the coaxial dual-mode resonator of the first order that is used to be coupled.
In addition; Externally being formed with the coupling amount on the conductor 1 regulates with screw 8; The coupling amount of the inside through regulate inserting coupling aperture 10 is regulated insertion amount with screw 8 (adjusting of coupling amount is with screw 8 and be formed at the interval between the base of coupling aperture 10 of partition 91), the coupling amount between arbitrary mode of resonance of the coaxial dual-mode resonator of the scalable first order and the arbitrary mode of resonance of the coaxial dual-mode resonator in the second level.
Figure 10 is the in-built figure that is used to explain the band pass filter of the coaxial dual-mode resonator that has used the embodiment of the invention; This figure (a) is the in-built figure that is used to explain the coaxial dual-mode resonator of the third level, and this figure (b) is the figure that is used to explain partition 92.
As stated; Though third level inner conductor 23 is fixed on partition 92 through metal mainstay 3; But shown in Figure 10 (b), on partition 92, be formed with the coupling aperture 10 of arbitrary mode of resonance of arbitrary mode of resonance and the coaxial dual-mode resonator of the third level of the coaxial dual-mode resonator in the second level that is used to be coupled.
In addition; Externally being formed with the coupling amount on the conductor 1 regulates with screw 8; The coupling amount that is inserted in the inside of coupling aperture 10 through adjusting is regulated insertion amount with screw 8 (adjusting of coupling amount is with screw 8 and be formed at the interval between the base of coupling aperture 10 of partition 92), the coupling amount between arbitrary mode of resonance of the coaxial dual-mode resonator in the scalable second level and the arbitrary mode of resonance of the coaxial dual-mode resonator of the third level.
In addition, be formed at the coupling aperture 10 of partition (91,92), shown in figure 13, not at the periphery of partition (91,92), also can be formed between center to the periphery of partition (91,92).
In addition; In the filter of present embodiment; Like Fig. 8～shown in Figure 10, with the insertion amount of screw 5 (that is, first resonance frequency is regulated with screw and the adjusting of second resonance frequency and used screw) (in other words two resonance frequencys that are formed at external conductor 1 through adjusting regulate; Inner conductor 3 resonant frequency adjustment are with the interval of screw 5), can regulate each resonance frequencys of two modes of resonance.
Equally; Through regulating and the bimodulus coupling that be formed at external conductor 1 opposed (in other words with the insertion amount of set screw 6 with chamfered section 7; The chamfered section 7 of inner conductor (21,22,23) and the interval of bimodulus coupling with set screw 6), can regulate the coupling amount of two modes of resonance.
Figure 11 has represented to use the equivalent electric circuit of band pass filter of the coaxial dual-mode resonator of the embodiment of the invention.
In Figure 11, M11, M12 represent each resonant circuit of first order dual-mode resonator, and M21, M22 represent each resonant circuit of second level dual-mode resonator, and M31, M32 represent each resonant circuit of third level dual-mode resonator.
In addition; C01 representes to be connected in the coupling circuit of a resonator of input and output coupling probe and the coaxial dual-mode resonator of the first order of input and output terminal 4, and C12 representes the coupling circuit of another resonator of resonator and the coaxial dual-mode resonator of the first order of the coaxial dual-mode resonator of the first order.
In addition; C23 representes the coupling circuit of a resonator of the coaxial dual-mode resonator of another resonator and the second level of the coaxial dual-mode resonator of the first order, and C34 representes the coupling circuit of another resonator of a coaxial dual-mode resonator of the resonator and the second level of the coaxial dual-mode resonator in the second level.
And then; C45 representes the coupling circuit of a resonator of another resonator and the coaxial dual-mode resonator of the third level of the coaxial dual-mode resonator in the second level; C56 representes the coupling circuit of another resonator of resonator and the coaxial dual-mode resonator of the third level of the coaxial dual-mode resonator of the third level, and C67 representes another resonator and the coupling circuit that is connected in the input and output coupling probe of input and output terminal 4 of the coaxial dual-mode resonator of the third level.
Figure 12 A be the expression used the embodiment of the invention 2 coaxial dual-mode resonator band pass filter through characteristic one the example chart, Figure 12 B be the expression used the embodiment of the invention 2 coaxial dual-mode resonator band pass filter the reflection loss amount one the example chart.
Among Figure 12 A, Figure 12 B, transverse axis is frequency (MHz), and centre frequency is 818MHz, and a scale is 50MHz.In addition, the longitudinal axis is attenuation (dB).
In the through characteristic shown in Figure 12 A; 814.2MHz the attenuation of passing through frequency band of～821.8MHz is in the pact-0.7dB; In the reflection loss flow characteristic shown in Figure 12 B, the reflection loss amount of passing through frequency band of 814.2MHz～821.8MHz is for more than the pact-23dB.
In addition, in above-mentioned explanation, though the embodiment that uses metal mainstay 3 is illustrated, can not become under the situation of problem in the heat that is produced by inner conductor 2, metal mainstay 3 also can change to the pillar that is made up of insulator.Under this situation, pillar is very little to the influence that bimodulus resonance produces.
In addition, in above-mentioned explanation,, replace input and output coupling probe 41 also can use the coupling loop element though the embodiment that has used input and output coupling probe 41 is illustrated.
As described above, the filter of present embodiment is owing to use the coaxial dual-mode resonator of the foregoing description, so, can be small-sized and low price.And then, owing to can be discharged into the outside efficiently via metal mainstay 3, external conductor 1 (or partition (91,92)) by the heat that inner conductor (21,22,23) produces, so the filter of present embodiment can be applicable in the high-power purposes.
More than, based on the specifically clear invention by present inventor's exploitation of the foregoing description, but the present invention is not limited to the foregoing description, in the scope that does not break away from its aim, can carry out various changes.
Symbol description
1 external conductor
2,21,22,23 inner conductors
3 metal mainstays
4 input and output terminals
5 resonance frequencys are regulated and are used screw
Set screw is used in the coupling of 6 bimodulus
7 chamfered section
8 coupling amounts are regulated and are used screw
10 coupling apertures
41 input and output coupling probes
91,92 partitions
Claims (12)
1. coaxial dual-mode resonator has:
External conductor; And
Flat inner conductor, it is disposed at the inside of said external conductor,
The flat shape of said inner conductor be have X-direction an opposite side and with the quadrangle form of an opposite side of the Y direction of said X-direction quadrature,
Said inner conductor has in first mode of resonance of said X-direction resonance with in second mode of resonance of said Y direction resonance,
This coaxial dual-mode resonator is characterised in that,
Have the pillar that the central part of the inner conductor of said quadrangle form is fixed in said external conductor,
A bight chamfering in four bights of the inner conductor of said quadrangle form,
Have:
Input terminal, it is arranged at any one side of said external conductor, and is coupled with said first mode of resonance of said inner conductor; And
Lead-out terminal, it is arranged at the face beyond the face that is provided with said input terminal of said external conductor, and is coupled with said second mode of resonance of said inner conductor.
2. coaxial dual-mode resonator as claimed in claim 1 is characterized in that,
Said pillar is the insulating properties pillar.
3. coaxial dual-mode resonator as claimed in claim 1 is characterized in that,
Said pillar is a metal mainstay.
4. coaxial dual-mode resonator as claimed in claim 1 is characterized in that,
Have the bimodulus coupling amount adjusting that is arranged at said external conductor and use screw,
Said bimodulus coupling amount is regulated with the part of the chamfering of screw and said inner conductor opposed,
Regulate the insertion amount with screw, the coupling amount of regulating said bimodulus according to said bimodulus coupling amount.
5. coaxial dual-mode resonator as claimed in claim 1 is characterized in that,
Have first resonance frequency adjusting that is arranged at said external conductor and use screw with screw and the adjusting of second resonance frequency,
Said first resonance frequency is regulated with the one side in the both sides of the said Y direction of screw and said inner conductor opposed,
Said second resonance frequency is regulated with the one side in the both sides of the said X-direction of screw and said inner conductor opposed,
Regulate the insertion amount separately with screw, the resonance frequency of regulating coaxial dual-mode resonator according to said first resonance frequency adjusting with screw and said second resonance frequency.
6. filter at the integer that n is taken as more than 2, when j is taken as the integer below the 2 above n, possesses:
External conductor;
(n-1) individual partition, its inside with said external conductor is divided into n inner space; And
N coaxial dual-mode resonator, it is disposed at a said n inner space,
Said each coaxial dual-mode resonator has the flat inner conductor that is disposed in said each inner space,
The flat shape of the inner conductor of said each coaxial dual-mode resonator be have X-direction an opposite side and with the quadrangle form of an opposite side of the Y direction of said X-direction quadrature,
The inner conductor of said each coaxial dual-mode resonator has in first mode of resonance of said X-direction resonance with in second mode of resonance of said Y direction resonance,
This filter is characterised in that to have:
The central part of the inner conductor of the said rectangular shape of said first coaxial dual-mode resonator is fixed in the pillar of said external conductor; Be fixed in the pillar of said partition with central part with the inner conductor of the said rectangular shape of said j coaxial dual-mode resonator,
A bight chamfering in four bights of the inner conductor of the said quadrangle form of said each coaxial dual-mode resonator,
Have:
Input terminal, it is arranged at said external conductor, and is coupled with said first mode of resonance of the inner conductor of said first coaxial dual-mode resonator; And
Lead-out terminal, it is arranged at said external conductor, and is coupled with first mode of resonance or second mode of resonance of the inner conductor of said n coaxial dual-mode resonator.
7. filter as claimed in claim 6 is characterized in that,
Said pillar is the insulating properties pillar.
8. filter as claimed in claim 6 is characterized in that,
Said pillar is a metal mainstay.
9. filter as claimed in claim 6 is characterized in that,
Said each coaxial dual-mode resonator has the bimodulus coupling amount adjusting that is arranged at said external conductor and uses screw,
Said each bimodulus coupling amount is regulated opposed with the part of the chamfering of the said inner conductor of said each coaxial dual-mode resonator with screw,
Regulate insertion amount according to said each bimodulus coupling amount, regulate the said bimodulus coupling amount of said each coaxial dual-mode resonator with screw.
10. filter as claimed in claim 6 is characterized in that,
Said each coaxial dual-mode resonator has first resonance frequency adjusting that is arranged at said external conductor and uses screw with screw and the adjusting of second resonance frequency,
Said first resonance frequency of said each coaxial dual-mode resonator is regulated with the one side in the both sides of the said Y direction of screw and said inner conductor opposed,
Said second resonance frequency of said each coaxial dual-mode resonator is regulated with the one side in the both sides of the said X-direction of screw and said inner conductor opposed,
Said first resonance frequency adjusting according to said each coaxial dual-mode resonator is regulated the insertion amount with screw with screw and said second resonance frequency, regulates the resonance frequency of said each coaxial dual-mode resonator.
11. filter as claimed in claim 6 is characterized in that,
Said each partition has coupling aperture.
12. filter as claimed in claim 11 is characterized in that,
Have and be arranged at said external conductor, and the coupling amount of inside that is inserted into each coupling aperture of said each partition regulates and uses screw,
Regulate insertion amount according to this coupling amount, regulate the coupling amount between said each coaxial dual-mode resonator with screw.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011065526A JP5350423B2 (en) | 2011-03-24 | 2011-03-24 | Coaxial dual mode resonator and filter |
| JP2011-065526 | 2011-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102694227A true CN102694227A (en) | 2012-09-26 |
| CN102694227B CN102694227B (en) | 2015-08-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210079419.1A Expired - Fee Related CN102694227B (en) | 2011-03-24 | 2012-03-23 | Coaxial dual-mode resonator and filter |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5350423B2 (en) |
| CN (1) | CN102694227B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161814A (en) * | 2015-09-29 | 2015-12-16 | 江苏吴通通讯股份有限公司 | Dual-mode dielectric cavity resonator and filter |
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| JP2004336496A (en) * | 2003-05-08 | 2004-11-25 | Shimada Phys & Chem Ind Co Ltd | Multi-mode filter |
| JP2004349981A (en) * | 2003-05-21 | 2004-12-09 | Murata Mfg Co Ltd | Resonator device, filter, compound filter device, and communication apparatus |
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| JPS6121104U (en) * | 1984-07-10 | 1986-02-07 | 三菱電機株式会社 | waveguide filter |
| JPS62204601A (en) * | 1986-03-04 | 1987-09-09 | Murata Mfg Co Ltd | Dual mode filter |
| JPS63302601A (en) * | 1987-06-01 | 1988-12-09 | Murata Mfg Co Ltd | Dielectric filter |
| JPH01101701A (en) * | 1987-10-15 | 1989-04-19 | Nec Corp | Microstrip type band-pass filter |
| JPH01260901A (en) * | 1988-04-11 | 1989-10-18 | Fujitsu Ltd | Dielectric filter |
| US5484764A (en) * | 1992-11-13 | 1996-01-16 | Space Systems/Loral, Inc. | Plural-mode stacked resonator filter including superconductive material resonators |
| US6031436A (en) * | 1998-04-02 | 2000-02-29 | Space Systems/Loral, Inc. | Single and dual mode helix loaded cavity filters |
| US6356171B2 (en) * | 1999-03-27 | 2002-03-12 | Space Systems/Loral, Inc. | Planar general response dual-mode cavity filter |
| JP2011044899A (en) * | 2009-08-21 | 2011-03-03 | Panasonic Corp | Filter device |
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| CN1192294A (en) * | 1995-06-13 | 1998-09-02 | 艾利森电话股份有限公司 | Tunable microwave device |
| CN1276922A (en) * | 1997-10-15 | 2000-12-13 | 菲尔特罗尼克公开有限公司 | Composite resonator |
| US20020190817A1 (en) * | 2001-06-13 | 2002-12-19 | Stephen Berry | Amplitude adjustable dual mode dielectric resonator filter assembly |
| JP2004336496A (en) * | 2003-05-08 | 2004-11-25 | Shimada Phys & Chem Ind Co Ltd | Multi-mode filter |
| JP2004349981A (en) * | 2003-05-21 | 2004-12-09 | Murata Mfg Co Ltd | Resonator device, filter, compound filter device, and communication apparatus |
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| CN105161814A (en) * | 2015-09-29 | 2015-12-16 | 江苏吴通通讯股份有限公司 | Dual-mode dielectric cavity resonator and filter |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012204918A (en) | 2012-10-22 |
| CN102694227B (en) | 2015-08-05 |
| JP5350423B2 (en) | 2013-11-27 |
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