CN203013892U - Cavity filter and tuner thereof - Google Patents
Cavity filter and tuner thereof Download PDFInfo
- Publication number
- CN203013892U CN203013892U CN201220629390.5U CN201220629390U CN203013892U CN 203013892 U CN203013892 U CN 203013892U CN 201220629390 U CN201220629390 U CN 201220629390U CN 203013892 U CN203013892 U CN 203013892U
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- Prior art keywords
- cavity body
- body filter
- tuner
- cavity
- holding tank
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000008878 coupling Effects 0.000 claims abstract description 32
- 238000010168 coupling process Methods 0.000 claims abstract description 32
- 238000005859 coupling reaction Methods 0.000 claims abstract description 32
- 238000009434 installation Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 19
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011505 plaster Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
- H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/105—A non-specified detector of the power of a signal being used in an amplifying circuit
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model relates to a cavity filter tuner which comprises an accommodating groove formed on a cover plate of a cavity filter and a tuning screw of which one end is placed in the cavity of the cavity filter and which passes through the accommodating groove, wherein the tuning screw comprises a screw portion engaged with the inner wall of the accommodating groove and a coupling rod, of which one end is fixed on the screw portion and the other end extends into the cavity. The tuner further comprises a rubber loop which divides the accommodating groove into non-communicative upper and lower portions. A cavity filter comprises the cavity filter tuner. The cavity filter tuner is simple in structure, easy for installation, stable in performance and applicable for mass production.
Description
Technical field
The utility model relates to a kind of cavity body filter, relates in particular to the cavity body filter tuner that it adopts.
Background technology
The radio-frequency cavity fluid filter due to its have low-loss, high power, low passive intermodulation, debugging simple, be easy to the series of advantages such as batch production it be widely used in mobile communication.The radio-frequency cavity fluid filter due to technical limitations, also can't accomplish to exempt from debugging fully at present, must be undertaken by artificial or machine tuning to reach needed electrical performance indexes.
Cavity body filter generally is comprised of cavity, cover plate, resonant column, tuning screw, and cavity body filter is in order to guarantee alap insertion loss, and inside cavity, cover plate, resonant column, tuning screw are all electroplated.In debug process, turn tuning screw, the electrodeposited coating between tuning screw and the cover plate even base material of cover plate is destroyed, with make more metal fillings fall into inside cavity, resonant column is inner.In the Product transport process, the metal fillings of falling into inside cavity can be moved, and may be distributed in inside cavity, cover plate, resonant column, tuning screw various piece.
The metal fillings of falling into cavity can bring series of problems to be mainly manifested in:
One, affect passive intermodulation.Along with the development of mobile communication and the raising of power system capacity, in order to satisfy the requirement of higher communication quality, communication system proposes very high requirement to the passive intermodulation of filter.The metal fillings of falling into cavity bottom will cause that the sudden change of electric current increases the density of electric current simultaneously, and this situation can significantly increase passive intermodulation, increases the interference of system.
Two, affect the power capacity of filter.The applied environment of system comprises: height above sea level, temperature, humidity, terminal coupling, signal modulation system etc., in order to satisfy the needs of varying environment, communication system has proposed very high requirement to the power capacity of filter, even harsh requirement, as even higher in the peak power requirement 3000W of some filter.Fall into the metal fillings of filter cavity inside, at the inner micro discharge that produces of filter, make filter field intensity herein very strong, thereby make filter generation power capacity punch-through, make the filter permanent failure, this will bring very serious problem.
Thereby under existing technical conditions, the metal fillings of falling into inside cavity by minimizing enters that to reduce passive intermodulation in the chamber, improve power capacity be very necessary.The Chinese utility model patent that is CN 202025836 U as publication number discloses a kind of cavity filter, comprise cavity, a plurality of resonatron and cover plate, comprise a plurality of pedestals that are provided with screwed hole on described cover plate, each screwed hole all coordinates a tuning screw, described screwed hole bottom is provided with stop section, tuning screw can pass the stopper section, the little bits of metal that the stopper section produces when being used for accumulating the resonance frequency that tuning screw regulates cavity filter are fallen in the cavity of cavity filter to prevent the little bits of metal; The stopper section is provided with the biadhesive adhesive plaster, the little bits of metal that produce when being used for adsorbing the resonance frequency that tuning screw regulates cavity filter.This scheme needs to paste biadhesive adhesive plaster, operating difficulties in the screw aperture; When tuning screw frequency modulation, tuning screw end contact viscosity adhesive plaster easily takes up the viscosity adhesive plaster simultaneously, and the viscosity adhesive plaster is ineffective.
The utility model content
The purpose of this utility model is for addressing the above problem, overcome the defective of prior art, provides a kind of can the minimizing to fall into cavity body filter interior metal bits, thereby reduces passive intermodulation, improve cavity body filter and the tuner thereof of power capacity.
For reaching above technical purpose, the technical solution adopted in the utility model is as follows:
A kind of cavity body filter tuner, comprise the holding tank on the cover plate that is formed at cavity body filter and the tuning screw that arranges with the inside cavity of inserting cavity body filter through this holding tank and an end, wherein, described tuning screw comprises that the threaded shank, the end that are meshed with described holding tank inwall are fixed on the coupling bar that the other end on threaded shank stretches into described inside cavity, this tuner also comprises rubber ring, is used for described holding tank is divided into the not connected two parts in up and down.
Particularly, described coupling bar is without the screw thread body of rod, and the overall diameter of described threaded shank is greater than the overall diameter of coupling bar.
Further, described threaded shank outer face central authorities are provided with for screwdriver and twist the profile groove that revolves.
Described rubber ring sleeve is located between described coupling bar and holding tank inwall.More preferably, described coupling bar is provided with for the in axial sliding stopper slot of restriction rubber ring along coupling bar.Particularly, described stopper slot is the annular groove that is arranged on described coupling bar surface.More preferably, described stopper slot is arranged near described threaded shank and coupling bar joint.
Particularly, described rubber ring comprises coaxial the first connected ring layer and the second ring layer, described the first ring layer overall diameter less than the overall diameter of the second ring layer.Described the second ring layer contacts with the inwall of described holding tank.
More preferably, described the first ring layer and the second ring layer are one-body molded.
Described the first ring layer and the second ring layer rounding off also form groove.More preferably, described the second ring layer and described holding tank inwall contact portion are provided with the rounding that prevents described rubber ring wearing and tearing.
Further, described holding tank is provided with towards an end of described cavity body filter inside the position-arresting groove that the described rubber ring of restriction and threaded shank enter described filter cavity.
Preferably, described holding tank protrudes with respect to described cover plate outer surface and arranges.
A kind of cavity body filter, wherein, it comprises aforesaid cavity body filter tuner.
Compared with prior art, the utlity model has following advantage: the metal fillings that drops when tuning screw screws, the space that utilizes rubber ring and holding tank sidewall to form is gathered, and the metal fillings that enters cavity body filter is obviously reduced, and has improved the product stability of cavity body filter; Rubber ring is durable than double faced adhesive tape, and whole tuner is simple in structure, installs easily, is convenient to produce in enormous quantities.
Description of drawings
Fig. 1 is vertical cross-sectional schematic of the cavity body filter that adopts the utility model cavity body filter tuner, and the position of tuner in cavity body filter mainly is shown.
Fig. 2 is vertical cross-sectional schematic of the utility model cavity body filter tuner.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
please refer to Fig. 1, in the longitudinal sectional view of the cavity body filter of employing the utility model cavity body filter tuner, the cover plate 1 of having showed this filter, tuning screw 2, cavity 3 and resonant column 4, described cover plate 1 and cavity 3 cover up and down and form an inner space, described resonant column 4 is arranged on the assigned address of described cavity 3 according to the specification requirement of this filter, each resonant column 4 and described cover plate 1 corresponding position formation capacitive coupling, by being fixedly installed on described cover plate 1 over against the tuning screw 2 of described resonant column 4 tops, can regulate the size in the coupling gap between this tuning screw 2 and resonant column 4, thereby the resonance frequency to described each resonant column 4 is adjusted.It is to be noted, position relationship between tuning screw 2 and resonant column 4 is not to be necessary, some such as elliptic function filter in, tuning screw 2 also can be over against the centre position between two adjacent resonant elements (or resonant column), and those skilled in the art should know this principle.
Described tuner comprises tuning screw 2, rubber ring 23 and is formed on holding tank on cover plate 1.Please refer to Fig. 2, in the longitudinal sectional view of the utility model cavity body filter tuner, cover plate 1, tuning screw 2 and rubber ring 23 are shown, form one on described cover plate 1 for the holding tank 11 of inserting described tuning screw 2, described holding tank 11 runs through cover plate 1, its inwall is provided with internal thread 111, and its diameter of an end opening that is positioned at cover plate 1 outside is less than the diameter of an end opening that is positioned at cover plate 1 inboard.As shown in this embodiment, described holding tank 11 is concordant with the inner surface of cover plate 1, protrudes to arrange to the outer surface of cover plate 1 to form the open tubular column that is erected at cover plate 1 outer surface; Described holding tank 11 also can be concordant with the outer surface of cover plate 1, protrudes to arrange to the inner surface of cover plate 1 to form the open tubular column that is erected at cover plate 1 inner surface; Described holding tank 11 can be not concordant with outer surface with the inner surface of cover plate 1 yet, protrudes to arrange to inside and outside two surfaces of cover plate 1 to form the open tubular column that is erected at cover plate 1 surfaces externally and internally.
Described tuning screw 2 comprises threaded shank 21 and coupling bar 22, and described threaded shank 21 outer cylinders are provided with external screw thread 211, and it is meshed with the internal thread 111 of described holding tank 11 and realizes installing; Described threaded shank 21 is provided with for the stubborn central profile groove 212 that revolves of screwdriver towards the end face of cover plate 1 outer surface one side, by driver bit and coordinating of this profile groove 212 imposing again torsion, drive described threaded shank 21 under the guiding of described holding tank 11 internal threads 111 in the interior axial upper and lower displacement of this holding tank 11;
Described coupling bar 22 and described threaded shank 21 be coaxial joins and one-body molded, this coupling bar 22 is the smooth threadless body of rod, better, its free-end is round and smooth dome shape, being used for avoiding deriving from described threaded shank 21 and holding tank 11 twists the metal fillings that revolves generation and enters the inside of described cavity 3 along with the screw thread on this body of rod surface, the free-end of described coupling bar 22 passes the inside that described holding tank 11 extend into described cavity 3, with described resonant column 4 couplings, by the upper and lower displacement of described threaded shank 21, drive this coupling bar 22 and adjust the length that enters described cavity 3.
described rubber ring 23 is set between the inwall of described coupling bar 22 and described holding tank 11, and be in the below of described threaded shank 21, the inner space of described holding tank 11 is separated into two the not connected parts in up and down, this rubber ring 23 is mainly used in accepting threaded shank described in described holding tank 11 the first half 21 and the stubborn metal fillings of generation that revolves of holding tank 11, avoid this metal fillings the latter half by holding tank 11 to fall into described cavity 3 inside, affect the stability of this filter, preferably, described rubber ring 23 is set in the joint near described threaded shank 21 and coupling bar 22, described rubber ring 23 comprises coaxial the first ring layer 231 that stacks and the second ring layer 232, described two ring layers are actually integrated, the overall diameter of wherein said the first ring layer 231 is less than the overall diameter of the second ring layer 232, the joint rounding off of described two ring layers, form groove 233, during assembling, described the second ring layer 232 is towards the direction of described cavity 3 inside, in addition, the overall diameter of described the second ring layer 232 is greater than the interior diameter of described holding tank 11, because this rubber ring 23 has elasticity, therefore described rubber ring 23 can suitably be compressed and is placed in described holding tank 11, at this moment, described the second ring layer 232 fits tightly with the inwall of this holding tank 11, the inwall of described groove 233 and holding tank 11 has formed the space that can gather metal fillings.
In order to reduce the wearing and tearing of described rubber ring 23, described the second ring layer 232 is provided with rounding 2321 with the contact portion of described holding tank 11 inwalls.
Twist at this tuning screw 2 for fear of described rubber ring 23 and depart from predeterminated position in revolving process, be provided with stopper slot 221 on described coupling bar 22, described stopper slot 221 is for the sheathed annular groove on it of described rubber rings 23, axial width the best of this groove is identical with the thickness of described rubber ring 23, and the axial width of this groove also can be slightly larger than the thickness of described rubber ring 23.
As previously mentioned, the radial dimension of holding tank 11 both ends opens does not wait, to fall in cavity 1 for fear of tuning screw 2 integral body in the utility model, and the setting of the setting of the threaded shank 21 of tuning screw 2 and rubber ring 23, that the inside of this holding tank 11 is movable spaced apart, wherein, occupy the movable space of rubber ring 23 belows, together with the cell wall that is used to dwindle the opening on this side direction, consisted of position-arresting groove 12.Specifically please continue with reference to figure 2, the bottom of described holding tank 11 is provided with and is enclosed in position-arresting groove 12 on the opening that holding tank 11 occupy cavity one side by what the part on cover plate 1 formed, be used for preventing that described tuning screw 2 breaks away from these holding tanks 11, fall into described cavity 1(and resonant column 4 thereof) inside.The opening that described position-arresting groove 12 surrounds is also the central through hole 13 of the utility model definition, the coupling bar 22 of tuning screw 2 passes the central through hole 13 of this position-arresting groove 12, and the inwall interference fits of the central through hole 13 of the outer surface of this coupling bar 22 and position-arresting groove 12, namely might there be the gap between the inwall of this coupling bar 22 and central through hole 13, also might be seamless, the processing of this central through hole 13 does not need requirement very accurate.
Please complex chart 1 and Fig. 2, by the constructed cavity body filter of tuner of the present utility model, although the tuning screw in this tuner still needs to be meshed with cover plate, easily drop out metal fillings, but its metal fillings can be accepted by described rubber ring (especially its groove), makes metal fillings can not fall in the resonant column of establishing in cavity or cavity, thereby guarantee that cavity body filter can work, thereby extend the useful life of product.
In sum, the utility model cavity body filter tuner is simple in structure, installation is easy, be difficult for falling bits when using, can guarantee that performance of filter is stable, is suitable for producing in enormous quantities.
Above-described embodiment is the better execution mode of the utility model; but not merely be restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within all being included in protection range of the present utility model.
Claims (15)
1. cavity body filter tuner, comprise the holding tank on the cover plate that is formed at cavity body filter and the tuning screw that arranges with the inside cavity of inserting cavity body filter through this holding tank and an end, it is characterized in that: described tuning screw comprises that the threaded shank, the end that are meshed with described holding tank inwall are fixed on the coupling bar that the other end on threaded shank stretches into described inside cavity, this tuner also comprises rubber ring, is used for described holding tank is divided into the not connected two parts in up and down.
2. cavity body filter tuner as claimed in claim 1 is characterized in that: described coupling bar is for without the screw thread body of rod, and the overall diameter of described threaded shank is greater than the overall diameter of coupling bar.
3. cavity body filter tuner as claimed in claim 1 is characterized in that: described threaded shank outer face central authorities are provided with for screwdriver twists the profile groove that revolves.
4. cavity body filter tuner as claimed in claim 1, it is characterized in that: described rubber ring sleeve is located between described coupling bar and holding tank inwall.
5. cavity body filter tuner as claimed in claim 4 is characterized in that: described coupling bar is provided with for the in axial sliding stopper slot of restriction rubber ring along coupling bar.
6. cavity body filter tuner as claimed in claim 5, it is characterized in that: described stopper slot is the annular groove that is arranged on described coupling bar surface.
7. cavity body filter tuner as claimed in claim 5 is characterized in that: described stopper slot is arranged near described threaded shank and coupling bar joint.
8. cavity body filter tuner as claimed in claim 4, it is characterized in that: described rubber ring comprises coaxial the first connected ring layer and the second ring layer, described the first ring layer overall diameter less than the overall diameter of the second ring layer.
9. cavity body filter tuner as claimed in claim 8, it is characterized in that: described the second ring layer contacts with the inwall of described holding tank.
10. cavity body filter tuner as claimed in claim 8, it is characterized in that: described the first ring layer and the second ring layer are one-body molded.
11. cavity body filter tuner as claimed in claim 10 is characterized in that: described the first ring layer and the second ring layer rounding off also form groove.
12. cavity body filter tuner as claimed in claim 11 is characterized in that: described the second ring layer and described holding tank inwall contact portion are provided with the rounding that prevents described rubber ring wearing and tearing.
13. cavity body filter tuner as described in any one in claim 1-12 is characterized in that: described holding tank is provided with towards an end of described cavity body filter inside the position-arresting groove that the described rubber ring of restriction and threaded shank enter described filter cavity.
14. cavity body filter tuner as described in claim 1-12 any one is characterized in that: described holding tank protrudes with respect to described cover plate outer surface and arranges.
15. a cavity body filter is characterized in that, it comprises cavity body filter tuner as described in any one in claim 1-14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220629390.5U CN203013892U (en) | 2012-11-23 | 2012-11-23 | Cavity filter and tuner thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220629390.5U CN203013892U (en) | 2012-11-23 | 2012-11-23 | Cavity filter and tuner thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203013892U true CN203013892U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220629390.5U Expired - Fee Related CN203013892U (en) | 2012-11-23 | 2012-11-23 | Cavity filter and tuner thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203013892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015101216A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市大富科技股份有限公司 | Cavity filter and cover plate thereof |
| WO2016106635A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市大富科技股份有限公司 | Cavity filter, duplexer, signal transceiving apparatus, remote radio device, and tower mounted amplifier |
| WO2017113170A1 (en) * | 2015-12-30 | 2017-07-06 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
-
2012
- 2012-11-23 CN CN201220629390.5U patent/CN203013892U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015101216A1 (en) * | 2013-12-31 | 2015-07-09 | 深圳市大富科技股份有限公司 | Cavity filter and cover plate thereof |
| WO2016106635A1 (en) * | 2014-12-31 | 2016-07-07 | 深圳市大富科技股份有限公司 | Cavity filter, duplexer, signal transceiving apparatus, remote radio device, and tower mounted amplifier |
| WO2017113170A1 (en) * | 2015-12-30 | 2017-07-06 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN107615573A (en) * | 2015-12-30 | 2018-01-19 | 深圳市大富科技股份有限公司 | Cavity body filter |
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
| CN109786908B (en) * | 2019-03-11 | 2024-02-23 | 深圳市安特无线设备有限公司 | Tuning cover plate and filter using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180320 Address after: 510663 Guangdong city of Guangzhou Province Economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Comba Telecom Systems (Guangzhou) Co., Ltd. Address before: 510663 Guangzhou Science City, Guangdong Shenzhou Road, No. 10 Patentee before: Comba Telecom System (China) Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200120 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663 No. 6, layered Road, Guangzhou economic and Technological Development Zone, Guangdong Patentee before: Jingxin Communication System (Guangzhou) Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20201123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |