CN204538162U - The coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment - Google Patents
The coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment Download PDFInfo
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- CN204538162U CN204538162U CN201420872715.1U CN201420872715U CN204538162U CN 204538162 U CN204538162 U CN 204538162U CN 201420872715 U CN201420872715 U CN 201420872715U CN 204538162 U CN204538162 U CN 204538162U
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Abstract
The utility model provides a kind of coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment.This coupled structure comprises resonator and is oppositely arranged with resonator and carries out the cross-couplings body of signal coupling, sheet metal is provided with between resonator and cross-couplings body, the cavity of sheet metal and cavity body filter is one-body molded, signal coupling between sheet metal and cross-couplings body.Cross-couplings body and being coupled between resonator are converted to cross-couplings body and being coupled between sheet metal by coupled structure of the present utility model, the tolerance of the distance between sheet metal and cross-couplings body is less, the consistency of cross-couplings body and the amount of coupling between resonator can be guaranteed, can also avoid needing the detachable cover plate of filter in prior art to change cross-couplings body, enhance productivity, reduce costs.
Description
Technical field
The utility model relates to wireless communication technology field, is specifically related to a kind of coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment.
Background technology
In the design of radio-frequency filter, arrive for making filter and better suppress requirement, usually need between non-adjacent resonator, to increase cross coupling structure to increase coupling amount.Cross coupling structure is made up of cross-couplings body and Supporting Media, and the distance between cross-couplings body resonator determines coupling amount, and distance is less, and coupling amount is larger.
When distance between cross-couplings body and resonator is very little, the change of the slight distance between them can produce considerable influence to coupling amount, thus the rigging error between resonator and cross-couplings body affects larger on the distance between cross-couplings body and resonator, cause the fluctuation of coupling amount also very large, affect the consistency of coupling amount.But in order to ensure the consistency of coupling amount, industry needs again usually by the detachable cover plate of filter to change cross-couplings body or the rigging position between adjustment resonator and cross-couplings body, and cause production efficiency low, maintenance cost is high.
Utility model content
In view of this, the utility model embodiment technical problem to be solved is to provide a kind of coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment, the consistency of cross-couplings body and the amount of coupling between resonator can be guaranteed, and production efficiency is high, maintenance cost is low.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: the coupled structure providing a kind of cavity body filter, comprise resonator and be oppositely arranged with resonator and carry out the cross-couplings body of signal coupling, resonator is metal resonators, sheet metal is provided with between resonator and cross-couplings body, the cavity of sheet metal and cavity body filter is one-body molded, signal coupling between sheet metal and cross-couplings body.
Wherein, the cavity bottom of cavity body filter is provided with integrated boss, sheet metal and boss one-body molded, and resonator is fixed on boss.
Wherein, sheet metal is arranged on the cavity bottom of cavity body filter.
Wherein, sheet metal blocks cross-couplings body completely.
Wherein, the distance between sheet metal and resonator is 0.3 ~ 1.0 millimeter, and the distance between sheet metal and cross-couplings body is 1.0 ~ 5.0 millimeters.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: provide a kind of cavity body filter, comprise cavity, the cover plate of capping cavity, multiple resonant cavity separated by dividing wall is had in cavity, coupled structure is provided with in cavity, coupled structure comprises the resonator be arranged in cavity and the cross-couplings body be arranged between at least two non-conterminous resonant cavitys, resonator and cross-couplings body are oppositely arranged and carry out signal coupling, sheet metal is provided with between resonator and cross-couplings body, the cavity of sheet metal and cavity body filter is one-body molded, signal coupling between sheet metal and cross-couplings body.
Wherein, the cavity bottom of cavity body filter is provided with integrated boss, sheet metal and boss one-body molded, and resonator is fixed on boss.
Wherein, the distance between sheet metal and resonator is 0.3 ~ 1.0 millimeter, and the distance between sheet metal and cross-couplings body is 1.0 ~ 5.0 millimeters.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: provide a kind of duplexer, comprise receiving filter and emission filter, receiving filter is connected between receiving terminal and antenna terminal, emission filter is connected to and sends between terminal and antenna terminal, receiving filter and the above-mentioned cavity body filter of emission filter.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: provide a kind of radio frequency remote equipment, comprise radio-frequency (RF) transceiver module, power amplifier module and above-mentioned duplexer, radio-frequency (RF) transceiver module is connected with power amplifier module, and power amplifier module is connected with duplexer.
Pass through technique scheme, the beneficial effect that the utility model embodiment produces is: be different from prior art, cross-couplings body and being coupled between resonator are converted to cross-couplings body and being coupled between sheet metal by the coupling structure of filter that the utility model provides, sheet metal and filter cavity body by integral forming, make the tolerance of the distance between sheet metal and cross-couplings body less, the error of coupling amount is less, thus can improve the consistency of cross-couplings body and the amount of coupling between resonator.Further, avoid rigging error in prior art between resonator and cross-couplings body comparatively large, and to need the detachable cover plate of filter, to change cross-couplings body, can enhance productivity, reduce costs.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram that the utility model has cavity body filter one embodiment of coupled structure;
Fig. 2 is the theory diagram of the utility model duplexer one embodiment;
Fig. 3 is the theory diagram of the utility model radio frequency remote equipment one embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, embodiment described below the utility model is only a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Fig. 1 is the cross section structure schematic diagram that the utility model has cavity body filter one embodiment of coupled structure.Refer to shown in Fig. 1, cavity body filter 20 comprises the cover plate 21 of cavity, capping cavity, has multiple resonant cavity separated by dividing wall 23, be provided with coupled structure in cavity in cavity.The coupled structure of the present embodiment comprises the resonator 11 be arranged in cavity and the cross-couplings body 12 be oppositely arranged with resonator 11, resonator 11 can be metal resonators, and be provided with sheet metal 13 between resonator 11 and cross-couplings body 12, signal coupling between sheet metal 13 and cross-couplings body 12, thus make to carry out signal coupling between resonator 11 and cross-couplings body 12.
The present embodiment preferable alloy sheet 13 is one-body molded with the cavity of cavity body filter 20, thus ensures the production efficiency of coupled structure.Particularly, the cavity bottom of cavity body filter 20 can be provided with integrated boss 14, and sheet metal 13 is one-body molded with boss 14.
In addition, resonator 11 is fixed on boss 14, actual when realizing resonator 11 by screw welding or directly can be weldingly fixed on boss 14.
Certainly, in other embodiments, the cavity bottom of cavity body filter 20 can not arrange boss 14, and sheet metal 13 is set directly at the cavity bottom of cavity body filter 20, and one-body molded with the cavity bottom of cavity body filter 20.
In the present embodiment, distance between sheet metal 13 and corresponding resonator 11 is 0.3 ~ 1.0 millimeter, such as can be 0.5 millimeter, sheet metal 13 is 1.0 ~ 5.0 millimeters with the distance flown between bar 121 of corresponding cross-couplings body 12, such as can be 1.0 millimeters, and sheet metal 13 blocks corresponding cross-couplings body 12 completely.Based on this, the emulation bandwidth of coupled structure is 23.2 megahertzes, is less than in prior art emulation bandwidth 24.4 megahertz when not arranging sheet metal 13, makes to adopt the cavity body filter 20 of coupled structure to have stronger antijamming capability when being coupled.
The coupled structure of the present embodiment is applicable to the filter of the resonator 11 with three coaxial cavities, and the resonator 11 comprising three coaxial cavities for filter is described:
Be coupled by the first coupling window between first resonator and the second resonator, second resonator and the 3rd resonator are coupled by the second coupling window, and the coupling between the first resonator and the 3rd resonator is realized with sheet metal 13 by the cross-couplings body 12 be arranged between the first resonator and the 3rd resonator.Now, first resonator and the 3rd resonator are the resonator 11 of the coaxial cavity of two shown in Fig. 1, stiffness of coupling between first resonator and the 3rd resonator is controlled by the distance between cross-couplings body 12 and cover plate 21, namely, the less then stiffness of coupling of distance between cross-couplings body 12 and cover plate 21 is higher, and the larger then stiffness of coupling of the distance between cross-couplings body 12 and cover plate 21 is lower.
In addition, the coupled structure of the present embodiment is also applicable to the filter of the resonator 11 with more than three coaxial cavities, for filter comprise N number of (N be more than or equal to four integer) resonator 11 of coaxial cavity is described:
Between first resonator and the second resonator, until N-1 resonator be all be coupled by coupling window between N resonator, and the coupling between the first resonator and N resonator realizes with sheet metal 13 by being arranged at cross-couplings body between the first resonator and N resonator 12.Now, first resonator and N resonator are the resonator 11 of the coaxial cavity of two shown in Fig. 1, stiffness of coupling between first resonator and N resonator is controlled by the distance between cross-couplings body 12 and cover plate 21, namely, the less then stiffness of coupling of distance between cross-couplings body 12 and cover plate 21 is higher, and the larger then stiffness of coupling of the distance between cross-couplings body 12 and cover plate 21 is lower.
The sheet metal 13 of the present embodiment must be the material etc. of good electric conducting material, such as fine aluminium or other electroplates.The both sides of sheet metal 13 can ensure the minimum distance flown between bar 121 of the resonator 11 shown in Fig. 1 and cross-couplings body 12 completely by Precision Machining, and the distance flown between bar 121 of resonator 11 and cross-couplings body 12 also can ensure that error is less completely, thus make the tolerance of the distance between sheet metal 13 and cross-couplings body 12 less, cause the change of coupling amount less, namely can guarantee the consistency of the amount of coupling between cross-couplings body 12 with resonator 11.
Further, because the cavity bottom of sheet metal 13 cavity body filter 20 is one-body molded, to compare prior art, reduce the rigging error between resonator 11 and cross-couplings body 12, without the need to dismantling the cover plate 21 of cavity body filter 20 to change cross-couplings body 12, thus can enhance productivity, and can reduce costs.
Fig. 2 is the theory diagram of the utility model duplexer one embodiment.As shown in Figure 2, duplexer comprises receiving filter 51 and emission filter 52, receiving filter 51 is connected between receiving terminal 53 and antenna terminal 54, emission filter 52 is connected to and sends between terminal 55 and antenna terminal 54, and receiving filter 51 and emission filter 52 are above-mentioned cavity body filter 20.
Fig. 3 is the theory diagram of the utility model radio frequency remote equipment one embodiment.As shown in Figure 3, radio frequency remote equipment 60 comprises radio-frequency (RF) transceiver module 61, power amplifier module 62, duplexer 63 and power module 64, wherein duplexer 63 can have the duplexer of structure shown in Fig. 2, radio-frequency (RF) transceiver module 61 is connected with power amplifier module 62, power amplifier module 62 is connected with duplexer 63, and power module 64 is for powering for radio frequency remote equipment 60.
Again illustrate; the foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; such as the be combineding with each other of technical characteristic between each embodiment; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. the coupled structure of a cavity body filter, it is characterized in that, comprise resonator and be oppositely arranged with described resonator and carry out the cross-couplings body of signal coupling, described resonator is metal resonators, sheet metal is provided with between described resonator and described cross-couplings body, the cavity of described sheet metal and described cavity body filter is one-body molded, signal coupling between described sheet metal and described cross-couplings body.
2. coupled structure according to claim 1, is characterized in that, the cavity bottom of described cavity body filter is provided with integrated boss, described sheet metal and described boss one-body molded, and described resonator is fixed on described boss.
3. coupled structure according to claim 1, is characterized in that, described sheet metal is arranged on the cavity bottom of described cavity body filter.
4. coupled structure according to claim 1, is characterized in that, described sheet metal blocks described cross-couplings body completely.
5. the coupled structure according to claim 1-4 any one, is characterized in that, the distance between described sheet metal and described resonator is 0.3 ~ 1.0 millimeter, and the distance between described sheet metal and described cross-couplings body is 1.0 ~ 5.0 millimeters.
6. a cavity body filter, it is characterized in that, comprise cavity, the cover plate of cavity described in capping, multiple resonant cavity separated by dividing wall is had in described cavity, coupled structure is provided with in described cavity, described coupled structure comprises the resonator be arranged in described cavity and the cross-couplings body be arranged between at least two non-conterminous resonant cavitys, described resonator and described cross-couplings body are oppositely arranged and carry out signal coupling, sheet metal is provided with between described resonator and described cross-couplings body, the cavity of described sheet metal and described cavity body filter is one-body molded, signal coupling between described sheet metal and described cross-couplings body.
7. cavity body filter according to claim 6, is characterized in that, the cavity bottom of described cavity body filter is provided with integrated boss, described sheet metal and described boss one-body molded, and described resonator is fixed on described boss.
8. the cavity body filter according to claim 6-7 any one, is characterized in that, the distance between described sheet metal and described resonator is 0.3 ~ 1.0 millimeter, and the distance between described sheet metal and described cross-couplings body is 1.0 ~ 5.0 millimeters.
9. a duplexer, comprise receiving filter and emission filter, described receiving filter is connected between receiving terminal and antenna terminal, described emission filter is connected to and sends between terminal and described antenna terminal, it is characterized in that, described receiving filter and emission filter are the cavity body filter described in claim 1-8 any one.
10. a radio frequency remote equipment, is characterized in that, comprises radio-frequency (RF) transceiver module, power amplifier module and duplexer according to claim 9, and described radio-frequency (RF) transceiver module is connected with described power amplifier module, and described power amplifier module is connected with described duplexer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420872715.1U CN204538162U (en) | 2014-12-31 | 2014-12-31 | The coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment |
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| CN201420872715.1U CN204538162U (en) | 2014-12-31 | 2014-12-31 | The coupled structure of cavity body filter, cavity body filter, duplexer and radio frequency remote equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436260A (en) * | 2020-11-25 | 2021-03-02 | 苏州灿勤通讯技术有限公司 | Novel TE mode dielectric resonator |
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2014
- 2014-12-31 CN CN201420872715.1U patent/CN204538162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436260A (en) * | 2020-11-25 | 2021-03-02 | 苏州灿勤通讯技术有限公司 | Novel TE mode dielectric resonator |
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