CN202167592U - Dielectric filter, radio frequency component and communication equipment - Google Patents
Dielectric filter, radio frequency component and communication equipment Download PDFInfo
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- CN202167592U CN202167592U CN2011200926469U CN201120092646U CN202167592U CN 202167592 U CN202167592 U CN 202167592U CN 2011200926469 U CN2011200926469 U CN 2011200926469U CN 201120092646 U CN201120092646 U CN 201120092646U CN 202167592 U CN202167592 U CN 202167592U
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- cover plate
- resonant rod
- cavity
- medium resonant
- dielectric filter
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Abstract
The utility model discloses a dielectric filter, which comprises a cavity, a cover board and a dielectric resonance rod, wherein the cavity is covered by the cover board to form a resonant cavity; the dielectric resonance rod is arranged in the resonant cavity; one end of the dielectric resonance rod is contacted with the cavity; the other end of the dielectric resonance rod is contacted with the cover board; a deformation portion is arranged around the position on the cover board where the cover board is contacted with the dielectric resonance rod; and the deformation produced under the mutual extrusion effect of the resonance rod and the cover board is centralized on the deformation portion. In addition, the embodiment of the utility model provides a radio frequency component and communication equipment using the same. The performance indexes of the communication equipment and the radio frequency component of the same can be optimized by using the dielectric filter to a large extent.
Description
[technical field]
The utility model relates to the wave filter technology field, and particularly a kind of dielectric filter also relates to radio-frequency devices that uses this dielectric filter and the communication equipment that uses this radio-frequency devices.
[background technology]
Dielectric filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station, dielectric filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Dielectric filter utilize low-loss, high-k, frequency-temperature coefficient and the thermal coefficient of expansion of medium ceramic material little, can bear characteristics such as high power and design and produce, it is good to be characterized in inserting little, the anti-power property of loss.
See also Fig. 1, Fig. 1 has shown the sketch map of a kind of TM in the prior art (transverse magnetic, horizontal magnetic) mould dielectric filter 100.This dielectric filter 100 comprises cavity 101, cover plate 102, medium resonant rod 103 and adjustment screw 104.
In dielectric filter, keep contact good and adjustment screw in medium resonant rod upper and lower end face to contact well and have great importance, otherwise will influence the performance of dielectric filter with cover plate.
In research process to prior art; The inventor of the utility model finds; In order to guarantee that the medium resonant rod upper surface contacts with the reliable of cover plate; The scheme that adopts is that cover plate is arranged to two-layer equation, comprise thicker upper cover plate and thin lower cover and be located at this upper cover plate and this lower cover between elastic component, apply elastic force through this elastic component and make this lower cover produce micro-elastic deformation for this lower cover to keep well contacting with this medium resonant rod; And in order to guarantee that adjustment screw contacts with the reliable of cover plate, the scheme of employing is on lower cover, to increase the adjustment screw fixture, for example the tubular piece of tapping etc. after increasing self-clinching nut, welded nut, punching press flange on the lower cover.
Such scheme has been obtained certain technique effect, but still has weak point:
Because there is tolerance in the size of part; The uneven situation of fitting surface can appear in this medium resonant rod assembling rear top surface and cover plate; When if this medium resonant rod end face is higher than this lower cover fitting surface, this lower cover will be prone to formed by this dielectric resonance masthead distortion the arc surface of an epirelief, when this medium resonant rod end face is lower than this lower cover fitting surface; This lower cover is prone to be squeezed distortion shape by this elastic component and forms protruding arc surface; This either way will cause forming fine clearance between this lower cover and this medium resonant rod, thereby cause the insertion loss of this dielectric filter big, the intermodulation index error.
And because this lower cover is thinner, when regulating the radio frequency parameter of dielectric filter through adjustment screw, the power that is applied on the adjustment screw is prone to cause the lower cover distortion, thereby causes lower cover and medium resonant rod loose contact.Simultaneously because the thickness of the threaded portion of adjustment screw and lower cover is also thinner; Therefore when vibrations taking place or artificially adjust tuning screw; Adjusting screw(rod) is easy to generate axial angular deflection, these factors all in various degree influence the performance index of dielectric filter.
[summary of the invention]
In order to promote the performance index of dielectric filter, the utility model embodiment provides a kind of dielectric filter of new structure.Simultaneously, the utility model embodiment also provides a kind of communication equipment and radio-frequency devices thereof.
The utility model embodiment solves the problems of the technologies described above a technical scheme of being taked and provides a kind of dielectric filter, and this dielectric filter comprises cavity, cover plate and medium resonant rod, and wherein, this cavity of this cover plate capping forms resonant cavity; This medium resonant rod is located in this resonant cavity; One end of this medium resonant rod contacts with this cavity; The other end of this medium resonant rod contacts with this cover plate; Be provided with deformations on every side with this medium resonant rod position contacting on this cover plate, the deformation that this medium resonant rod and this cover plate mutual extrusion are done the time spent generation concentrates on this deformations.
The utility model embodiment solves the problems of the technologies described above another technical scheme of being taked and provides a kind of radio-frequency devices, and this radio-frequency devices comprises cavity, cover plate and medium resonant rod, and wherein, this cavity of this cover plate capping forms resonant cavity; This medium resonant rod is located in this resonant cavity; One end of this medium resonant rod contacts with this cavity; The other end of this medium resonant rod contacts with this cover plate; Be provided with deformations on every side with this medium resonant rod position contacting on this cover plate, the deformation that this medium resonant rod and this cover plate mutual extrusion are done the time spent generation concentrates on this deformations.
The utility model embodiment solves the problems of the technologies described above another technical scheme of being taked and provides a kind of communication equipment; This communication equipment comprises above-mentioned radio-frequency devices; This radio-frequency devices is located at the signal receipts/Power Generation Road part of this communication equipment, is used for signal is selected.
Compared with prior art; The cover plate of the dielectric filter that the utility model embodiment provides is provided with deformations; And the thickness of this cover plate and this resonant rod contact area is greater than the thickness of this deformations; Make this resonant rod and this cover plate mutual extrusion do the deformation that the time spent produces and be easy to concentrate on this deformations, and the contact area of this cover plate and this medium resonant rod shape that remains unchanged, thereby guarantee that this cover plate well contacts with this medium resonant rod.Simultaneously owing to adopt the elasticity that deformation region assurance cover plate is set; Then can guarantee the thickness of cover plate; Just more firm in the threaded engagement of the adjusting screw that on the cover board adjustment screw and cover plate are installed like this, the cover plate distortion that is difficult for causing, the axial problems such as angular deflection of generation adjustment screw.
[description of drawings]
In order to be illustrated more clearly in the technical scheme among the utility model embodiment; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.In addition, accompanying drawing is not proportionally drawn.Wherein:
Fig. 1 has shown a kind of sketch map of dielectric filter in the prior art;
Fig. 2 has shown the schematic partial cross-sectional view according to the dielectric filter of the utility model one preferred embodiment; And
Fig. 3 has shown the schematic partial cross-sectional view according to the dielectric filter of another preferred embodiment of the utility model.
[embodiment]
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is a part of embodiment of the utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of dielectric filter; This dielectric filter comprises cavity, cover plate and medium resonant rod; Wherein, this cavity of this cover plate capping forms resonant cavity, and this medium resonant rod is located in this resonant cavity; One end of this medium resonant rod contacts with this cavity; The other end of this medium resonant rod contacts with this cover plate, is provided with deformations on every side with this medium resonant rod position contacting on this cover plate, and the deformation that this medium resonant rod and this cover plate mutual extrusion are done the time spent generation concentrates on this deformations.
The utility model embodiment also provides a kind of radio-frequency devices, and this radio-frequency devices comprises cavity, cover plate and medium resonant rod, and this cavity of this cover plate capping forms resonant cavity; This medium resonant rod is located in this resonant cavity; One end of this medium resonant rod contacts with this cavity; The other end of this medium resonant rod contacts with this cover plate; Be provided with deformations on every side with this medium resonant rod position contacting on this cover plate, the deformation that this medium resonant rod and this cover plate mutual extrusion are done the time spent generation concentrates on this deformations.
The utility model embodiment also provides a kind of communication equipment, and this communication equipment comprises above-mentioned radio-frequency devices, and this radio-frequency devices is located at the signal receipts/Power Generation Road part of this communication equipment, is used for signal is selected.
Below in conjunction with embodiment the dielectric filter that the utility model provides is described in detail.
Embodiment one
A kind of dielectric filter.See also Fig. 2, Fig. 2 has shown the schematic partial cross-sectional view according to the dielectric filter of the utility model one preferred embodiment.
As shown in Figure 2, this dielectric filter 200 comprises cavity 210, cover plate 220 and medium resonant rod 230.Wherein, this cavity 210 of these cover plate 220 cappings forms resonant cavity 240; This medium resonant rod 230 is located in this resonant cavity 240, and an end 232 of this medium resonant rod 230 contacts with this cavity 210, and the other end 234 of this medium resonant rod 230 contacts with this cover plate 220; Be provided with deformations 224 on every side with these medium resonant rod 230 position contacting on this cover plate 220, this medium resonant rod 230 concentrates on this deformations 224 with the deformation that these cover plate 220 mutual extrusion are done the time spent generation.
In the utility model embodiment; This dielectric filter 200 also comprises the compressing member 260 that is arranged on this cover plate 220, through this compressing member 260 and the mutual extrusion effect of this cover plate 220 this cover plate 220 is closely contacted with the other end 234 of this medium resonant rod 230.
In the utility model embodiment; The height h of this medium resonant rod 230 is slightly larger than depth H that this resonant cavity 240 is provided with these dielectric filter 200 places (because of height value differs less; Not shown its visual difference), make this cover plate 220 and this medium resonant rod 230 push close-fittings.In the present embodiment, resonant cavity 240 bottoms are nonplanar structure, thereby depth H refers in particular to the degree of depth that these dielectric filter 200 places are set, and have among the embodiment of planar structure the basic degree of depth of depth H general reference resonant cavity 240 in other resonant cavity 240 bottoms.
In the utility model embodiment; The thickness of cover plate 220 and these medium resonant rod 230 contact areas 224 is greater than the thickness of this deformations 222; Make this compressing member 260 and the deformation that this cover plate 220 mutual extrusion effects produce be easy to concentrate on this deformations 222, and the contact area 224 of this cover plate 220 and this medium resonant rod 230 shape that remains unchanged.
In addition; This dielectric filter 200 also comprises adjustment screw 250, and this cover plate 220 is provided with the adjusting screw 226 with this adjustment screw 250 couplings, and this medium resonant rod 230 contacts the tuning space 236 that caves in this cover plate 220; This adjustment screw 250 is regulated screw 226 threaded engagement with this; And pass this cover plate 220 and extend in this tuning space, because cover plate 220 has certain thickness, make this adjustment screw 250 well contact with cover plate 220.
In concrete practice, this deformations 224 can be a circle or encloses stamping forming ripple impression more.In the present embodiment, this compressing member 224 is a flexure strip, certainly, also can adopt disc spring.
Embodiment two
A kind of dielectric filter.See also Fig. 3, Fig. 3 has shown the schematic partial cross-sectional view according to the dielectric filter of another preferred embodiment of the utility model.
As shown in Figure 3, this dielectric filter 300 comprises cavity 310, cover plate 320 and medium resonant rod 330.Wherein, this cavity 310 of these cover plate 320 cappings forms resonant cavity 340; This medium resonant rod 330 is located in this resonant cavity 340; One end 332 of this medium resonant rod 330 contacts with this cavity 310; The other end 334 of this medium resonant rod 330 contacts with this cover plate 320; Be provided with deformations 324 on every side with these medium resonant rod 330 position contacting on this cover plate 320, this medium resonant rod 330 concentrates on this deformations 324 with the deformation that these cover plate 320 mutual extrusion are done the time spent generation.
In the utility model embodiment; This dielectric filter 300 also comprises the compressing member 360 that is arranged on this cover plate 320, through this compressing member 360 and the mutual extrusion effect of this cover plate 320 this cover plate 320 is closely contacted with the other end 334 of this medium resonant rod 230.
In the utility model embodiment; The height h of this medium resonant rod 330 is slightly larger than depth H that this resonant cavity 340 is provided with these dielectric filter 300 places (because of height value differs less; Not shown its visual difference), make this cover plate 320 and this medium resonant rod 330 push close-fittings.In the present embodiment, resonant cavity 340 bottoms are nonplanar structure, thereby depth H refers in particular to the degree of depth that these dielectric filter 300 places are set, and have among the embodiment of planar structure the basic degree of depth of depth H general reference resonant cavity 340 in other resonant cavity 340 bottoms.
In the utility model embodiment; The thickness of cover plate 320 and these medium resonant rod 330 contact areas 324 is greater than the thickness of this deformations 322; Make this compressing member 360 and the deformation that this cover plate 320 mutual extrusion effects produce be easy to concentrate on this deformations 322, and the contact area 224 of this cover plate 320 and this medium resonant rod 330 shape that remains unchanged.
In addition; This dielectric filter 300 also comprises adjustment screw 350, and this cover plate 320 is provided with the adjusting screw 326 with this adjustment screw 350 couplings, and this medium resonant rod 330 contacts the tuning space 336 that caves in this cover plate 320; This adjustment screw 350 is regulated screw 326 threaded engagement with this; And pass this cover plate 320 and extend in this tuning space, because cover plate 320 has certain thickness, make this adjustment screw 350 well contact with cover plate 320.
In the present embodiment, this compressing member 360 comprises that lower surface is provided with the plate body 362 of sunk area and is located at the elastic component 364 that this sunk area also partly protrudes in this sunk area.
In addition; This dielectric filter 300 also comprises adjustment screw 350; This cover plate 322 is provided with the adjusting screw 326 with this adjustment screw 350 couplings; This adjustment screw 350 is directly installed on this adjusting screw 326, because this cover plate 320 has certain thickness, makes this adjustment screw 350 well to contact with cover plate 320.
Embodiment three
A kind of radio-frequency devices.The utility model embodiment also provides a kind of radio-frequency devices, and this radio-frequency devices comprises cavity, cover plate and medium resonant rod, and wherein, this cavity of this cover plate capping forms resonant cavity; This medium resonant rod is located in this resonant cavity; One end of this medium resonant rod contacts with this cavity; The other end of this medium resonant rod contacts with this cover plate; Be provided with deformations on every side with this medium resonant rod position contacting on this cover plate, the deformation that this medium resonant rod and this cover plate mutual extrusion are done the time spent generation concentrates on this deformations.This radio-frequency devices can be single multiplexer, duplexer, mixer or tower amplifier etc.
Embodiment four
A kind of communication equipment.The utility model embodiment also provides a kind of communication equipment, and this communication equipment comprises embodiment three described radio-frequency devices, and this radio-frequency devices is located at the signal receipts/Power Generation Road part of this communication equipment, is used for signal is selected.
In sum; Those skilled in the art understand easily; The cover plate of the dielectric filter that the utility model embodiment provides is provided with deformations, and the thickness of this cover plate and this resonant rod contact area is greater than the thickness of this deformations, makes this resonant rod and this cover plate mutual extrusion do the deformation that the time spent produces and is easy to concentrate on this deformations; The shape and the contact area of this cover plate and this medium resonant rod remains unchanged, thus guarantee that this cover plate well contacts with this medium resonant rod.Simultaneously owing to adopt the elasticity that deformation region assurance cover plate is set; Then can guarantee the thickness of cover plate; Just more firm in the threaded engagement of the adjusting screw that on the cover board adjustment screw and cover plate are installed like this, the cover plate distortion that is difficult for causing, the axial problems such as angular deflection of generation adjustment screw.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model after reading present patent application under the situation of spirit that does not break away from the utility model and scope.
Claims (10)
1. a dielectric filter is characterized in that, comprising:
Cavity;
Cover plate, the said cavity of said cover plate capping forms resonant cavity;
Medium resonant rod; Said medium resonant rod is located in the said resonant cavity; One end of said medium resonant rod contacts with said cavity; The other end of said medium resonant rod contacts with said cover plate, is provided with deformations on every side with said medium resonant rod position contacting on the said cover plate, and the deformation that said medium resonant rod and said cover plate mutual extrusion are done the time spent generation concentrates on said deformations.
2. dielectric filter according to claim 1; It is characterized in that; Said dielectric filter also comprises the compressing member that is arranged on the said cover plate, makes said cover plate closely contact with the other end of said medium resonant rod through the said compressing member and the mutual extrusion effect of said cover plate.
3. dielectric filter according to claim 2 is characterized in that, the height of said medium resonant rod is provided with the degree of depth at said medium resonant rod place greater than said resonant cavity, makes said thick cover plate and said medium resonant rod extruding close-fitting.
4. dielectric filter according to claim 3 is characterized in that, the thickness of said cover plate and said resonant rod contact area is greater than the thickness of said deformations.
5. according to each described dielectric filter in the claim 1 to 4; It is characterized in that; Said dielectric filter also comprises adjustment screw, and said cover plate is provided with the adjusting screw with said adjustment screw coupling, and said medium resonant rod contacts the tuning space that caves in said cover plate; Said adjustment screw and said adjusting screw threaded engagement, and pass said cover plate and extend in the said tuning space.
6. dielectric filter according to claim 5 is characterized in that, said deformations is a circle or encloses the ripple impression more.
7. dielectric filter according to claim 5 is characterized in that, said compressing member is elastic component or disc spring.
8. a radio-frequency devices is characterized in that, comprising:
Cavity;
Cover plate, the said cavity of said cover plate capping forms resonant cavity;
Medium resonant rod; Said medium resonant rod is located in the said resonant cavity; One end of said medium resonant rod contacts with said cavity; The other end of said medium resonant rod contacts with said cover plate, is provided with deformations on every side with said medium resonant rod position contacting on the said cover plate, and the deformation that said medium resonant rod and said cover plate mutual extrusion are done the time spent generation concentrates on said deformations.
9. radio-frequency devices according to claim 8 is characterized in that, said radio-frequency devices is single multiplexer, duplexer, mixer or tower amplifier.
10. a communication equipment is characterized in that, said communication equipment comprises according to Claim 8 or 9 described radio-frequency devices that said radio-frequency devices is located at the signal receipts/Power Generation Road part of said communication equipment, is used for signal is selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200926469U CN202167592U (en) | 2011-03-31 | 2011-03-31 | Dielectric filter, radio frequency component and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200926469U CN202167592U (en) | 2011-03-31 | 2011-03-31 | Dielectric filter, radio frequency component and communication equipment |
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| Publication Number | Publication Date |
|---|---|
| CN202167592U true CN202167592U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200926469U Expired - Fee Related CN202167592U (en) | 2011-03-31 | 2011-03-31 | Dielectric filter, radio frequency component and communication equipment |
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| CN (1) | CN202167592U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015168883A1 (en) * | 2014-05-07 | 2015-11-12 | 华为技术有限公司 | Transverse magnetic (tm) mode dielectric filter |
| CN105529512A (en) * | 2016-01-13 | 2016-04-27 | 广东通宇通讯股份有限公司 | TM-mode dielectric filter |
-
2011
- 2011-03-31 CN CN2011200926469U patent/CN202167592U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015168883A1 (en) * | 2014-05-07 | 2015-11-12 | 华为技术有限公司 | Transverse magnetic (tm) mode dielectric filter |
| CN105308790A (en) * | 2014-05-07 | 2016-02-03 | 华为技术有限公司 | Transverse magnetic (TM) mode dielectric filter |
| EP3133691A1 (en) * | 2014-05-07 | 2017-02-22 | Huawei Technologies Co., Ltd. | Transverse magnetic (tm) mode dielectric filter |
| EP3133691A4 (en) * | 2014-05-07 | 2017-05-03 | Huawei Technologies Co. Ltd. | Transverse magnetic (tm) mode dielectric filter |
| CN105308790B (en) * | 2014-05-07 | 2019-04-12 | 华为技术有限公司 | A kind of horizontal magnetic (TM) mould dielectric filter |
| US10333188B2 (en) | 2014-05-07 | 2019-06-25 | Huawei Technologies Co., Ltd. | Transverse magnetic (TM) mode dielectric filter |
| EP3518341A1 (en) * | 2014-05-07 | 2019-07-31 | Huawei Technologies Co., Ltd. | Transverse magnetic (tm) mode dielectric filter |
| CN105529512A (en) * | 2016-01-13 | 2016-04-27 | 广东通宇通讯股份有限公司 | TM-mode dielectric filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20180331 |