CN104752796A - Cavity filter and radio remote device - Google Patents
Cavity filter and radio remote device Download PDFInfo
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- CN104752796A CN104752796A CN201310754235.5A CN201310754235A CN104752796A CN 104752796 A CN104752796 A CN 104752796A CN 201310754235 A CN201310754235 A CN 201310754235A CN 104752796 A CN104752796 A CN 104752796A
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Abstract
The invention discloses a cavity filter and a radio remote device. The cavity filter comprises a coupling structural member, which is composed of a metal spiral coil, a first fixing table, a first metal bar, a first insulator, a second fixing table, a second metal bar and a second insulator, wherein the first fixing table is fixedly connected with a first resonator; the second fixing table is fixedly connected with a second resonator; the metal spiral coil penetrates a coupling window, and both ends of the metal spiral coil are connected to the first fixing table and the second fixing table; the first insulator is fixed inside the sliding groove of a first cavity, and the second insulator is fixed inside the sliding groove of a second cavity; the fixed end of the first metal bar is fixed to the first insulator, and the free end of the first metal bar extends into the space enclosed by the metal spiral coil; the fixed end of the second metal bar is fixed to the second insulator, and the free end of the second metal bar extends into the space enclosed by the metal spiral coil. The coupling structural member is simple in structure, high in electromagnetic coupling capacity and wide in tuning range.
Description
Technical field
The present invention relates to wave filter technology field, particularly relate to a kind of cavity body filter and radio frequency remote equipment.
Background technology
Cavity body filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In a base station, filter for selecting signal of communication, the clutter outside filtering communication signal frequency or interference signal.As one of the Primary Component of radio-frequency front-end, the quality of ultra-wide band filter performance directly affects the quality of whole communication system.
To in the research and practice process of prior art, the present inventor finds, in the prior art, existing cavity body filter is by offering window to realize coupling between two resonant cavitys, and carry out tuning within the specific limits by the tuning screw on cover plate, the strong and weak size by changing coupling window of the coupling between two chambeies realizes.When but the coupling amount when between two resonant cavitys is very large, even the termination of tuning screw almost touches resonant cavity base plate, and the wall of isolating two resonant cavitys is all opened, also be difficult to meet, and in actual production, coupling window does not wish to reach the limit, may introduce unnecessary coupling, and tuning screw does not wish the lowermost end extending into chamber yet, the reliability of performance of filter can be reduced like this.Although can increase the diameter of tuning screw or add dish on top to increase coupling amount, coupling effect is not remarkable like this, and also makes troubles to debugging and processing.
Summary of the invention
It is simple that the technical problem that the present invention mainly solves is to provide a kind of coupled structure, and electromagnetic coupled amount is large, the cavity body filter that tuning range is wide and radio frequency communication devices.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of cavity body filter, comprise cover plate, first cavity, second cavity, described cover plate capping first cavity, second cavity, first resonator, second resonator, first resonator is arranged in the first cavity, second resonator is arranged in the second cavity, coupling window is provided with between first cavity and the second cavity, described cover plate is provided with tuning screw, and tuning screw stretches into coupling window measures for tuning coupling, described filter also comprises a coupled structure part, described coupled structure part comprises metal spiral coil, first fixed station, first Metallic rod, first insulating part, second fixed station, second Metallic rod, second insulating part, first fixed station is fixedly connected with the first resonator, and the second fixed station is fixedly connected with the second resonator, and described metal spiral coil is through coupling window and its two ends are connected on the first fixed station and the second fixed station, described first insulating part is fixed in the chute of the first cavity, described second insulating part is fixed in the chute of the second cavity, stiff end and first insulating part of described first Metallic rod are fixed, free end stretches in the space of metal spiral coil containing, stiff end and second insulating part of described second Metallic rod are fixed, and free end stretches in the space of metal spiral coil containing.
For solving the problems of the technologies described above, another technical solution used in the present invention is: a kind of radio frequency remote equipment, it is characterized in that: comprising: comprise radio-frequency (RF) transceiver module, power amplifier module and the filter of power described in 1 to 9 any one, described radio-frequency (RF) transceiver module is connected with described power amplifier module, and described power amplifier module is connected with described filter.
The invention has the beneficial effects as follows: the situation being different from prior art, the male part structure of cavity body filter of the present invention and radio frequency communication devices is simple, slide that to carry out electromagnetism close coupling tuning by being engaged in filter cavity of metal spiral coil and metal bar, carry out trace by tuning screw to regulate, electromagnetic coupled amount is large, and tuning range is wide.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 (a) is the structural representation of cavity body filter first embodiment of the present invention;
Fig. 1 (b) is the schematic top plan view of cavity body filter first embodiment of the present invention;
Fig. 2 (a) is the structural representation of cavity body filter second embodiment of the present invention;
Fig. 2 (b) is the schematic top plan view of cavity body filter second embodiment of the present invention;
Fig. 3 (a) is the structural representation of cavity body filter of the present invention 3rd embodiment;
Fig. 3 (b) is the schematic top plan view of cavity body filter of the present invention 3rd embodiment;
Fig. 4 (a) is the schematic top plan view of cavity body filter diapire chute of the present invention;
Fig. 4 (b) is the elevational schematic view of cavity body filter diapire chute of the present invention;
Fig. 5 is the structural representation of radio frequency remote equipment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of cavity body filter, comprise cover plate 1, first cavity 31, second cavity 32, described cover plate 1 capping first cavity 31, second cavity 32, first resonator 512, second resonator 521, first resonator is arranged in the first cavity 31, second resonator 521 is arranged in the second cavity 32, coupling window 30 is provided with between first cavity 31 and the second cavity 32, described cover plate 1 is provided with tuning screw 6, and tuning screw 6 stretches into coupling window 30 measures for tuning coupling, described filter also comprises a coupled structure part, described coupled structure part comprises metal spiral coil 510, first fixed station 512, first Metallic rod 514, first insulating part 513, second fixed station 522, second Metallic rod 524, second insulating part 523, first fixed station 512 is fixedly connected with the first resonator 512, and the second fixed station 522 is fixedly connected with the second resonator 521, and described metal spiral coil 510 is through coupling window 30 and its two ends are connected on the first fixed station 512 and the second fixed station 522, described first insulating part 513 is fixed in the chute of the first cavity 31, described second insulating part 523 is fixed in the chute of the second cavity 32, stiff end and first insulating part 513 of described first Metallic rod 514 are fixed, free end stretches in the space of metal spiral coil 510 containing, stiff end and second insulating part 523 of described second Metallic rod 524 are fixed, and free end stretches in the space of metal spiral coil 510 containing.First Metallic rod 514 does not all contact with metal spiral coil 510 with the second Metallic rod 524.Metal spiral coil 510 and the first Metallic rod 514 and the second Metallic rod 524 form close coupling structure, by the first Metallic rod 514 and the second Metallic rod 524 diverse location be set in advance in chute are arranged a large amount of coupling range, and then regulated by tuning screw 6 trace.
As an embodiment of the present invention first fixed station 512 and the second fixed station 522, its embodiment is: the first groove offered by described first fixed station 512, the second groove offered by described second fixed station 522, the free end of described first Metallic rod 514 is through stretching in metal spiral coil 510 behind the space of the first groove, and the free end of described second Metallic rod 524 stretches in metal spiral coil 510 through behind the space of the second groove.Described chute 7 is arranged on cavity diapire, described first cavity 31 and the second cavity 32 internal chute 7 are respectively provided with three location notchs 8, described insulating part is that elastic material is arranged in location notch, insulating part can prolong the slip of chute track and arrive next location notch, pre-sets the coupling amount corresponding to each chute.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
Regulate described first metal bar to enter the degree of depth of metal spiral coil 510 by the diverse location be fixed on by the first insulating part 513 in first groove, regulate described second metal bar to enter the degree of depth of metal spiral coil 510 by the diverse location be fixed on by the second insulating part 523 in second groove.
As the embodiment of fixed station of the present invention with the mode that is fixedly connected with of resonator, its embodiment is: described first fixed station 512 is connected by the screw be arranged on bottom the first resonator 512 with the first resonator 512, and described second fixed station 522 is connected by the screw be arranged on bottom the first resonator 512 with the second resonator 521.The sealed mode structure of screw is simple, firmly sealed.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
As amount embodiment of the connected mode of fixed station of the present invention and resonator, its embodiment is: described first fixed station 512 and the first resonator 512 are metal material and one-body molded, and described second fixed station 522 and the second resonator 521 are metal material and one-body molded.This kind of one-body molded mode technique is simple, and production efficiency is high.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
As the embodiment of metal spiral coil 510 of the present invention with the connected mode of fixed station, its embodiment is: the two ends of described metal spiral coil 510 are welded on the first fixed station 512 and the second fixed station 522 respectively.Welding manner is reliable and stable.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
As an embodiment of the connected mode of conductor rods of the present invention and insulating part, its embodiment is: described first insulating part 513 is the first working of plastics, described first Metallic rod 514 rear end bending insertion first working of plastics; Described second insulating part 523 is the second working of plastics, described second Metallic rod 524 rear end bending insertion second working of plastics.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
As one embodiment of the present of invention, described first working of plastics and the second working of plastics are all fixed by the screw be arranged on bottom filter cavity.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
As one embodiment of the present of invention, described first fixed station 512, first insulating part 513, second fixed station 522, second insulating part 523 arranges on the same line, and described metal spiral coil 510, first Metallic rod 514, second Metallic rod 524 is coaxially arranged.The present embodiment is only described with the present embodiment inventive point relevant portion, concrete parts or structure, with reference to the suitable increase and decrease of existing conventional implementation, can not be construed as limiting the invention.
When radio frequency remote equipment 100 is operated in descending time slot, enter cavity body filter 103 from transmitting of radio-frequency (RF) transceiver module 101 by power amplifier module 102, cavity body filter 103, to the filtering that transmitted, is then transmitted into antenna opening after power combing.
When radio frequency remote equipment 100 is operated in ascending time slot, the signal received from antenna opening by entering power amplifier module 102 after filter filtering, then exports to the receive path of radio-frequency (RF) transceiver module 101 correspondence after power amplifier module 102 amplifies.
The male part structure of cavity body filter of the present invention and radio frequency communication devices is simple, slide that to carry out electromagnetism close coupling tuning by being engaged in filter cavity of metal spiral coil and metal bar, carry out trace by tuning screw to regulate, electromagnetic coupled amount is large, and tuning range is wide.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; 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 invention.
Claims (10)
1. a cavity body filter, comprise cover plate, first cavity, second cavity, described cover plate capping first cavity, second cavity, first resonator, second resonator, first resonator is arranged in the first cavity, second resonator is arranged in the second cavity, coupling window is provided with between first cavity and the second cavity, it is characterized in that, described cover plate is provided with tuning screw, and tuning screw stretches into coupling window measures for tuning coupling, described filter also comprises a coupled structure part, described coupled structure part comprises metal spiral coil, first fixed station, first Metallic rod, first insulating part, second fixed station, second Metallic rod, second insulating part, first fixed station is fixedly connected with the first resonator, and the second fixed station is fixedly connected with the second resonator, and described metal spiral coil is through coupling window and its two ends are connected on the first fixed station and the second fixed station, described first insulating part is fixed in the chute of the first cavity, described second insulating part is fixed in the chute of the second cavity, stiff end and first insulating part of described first Metallic rod are fixed, free end stretches in the space of metal spiral coil containing, stiff end and second insulating part of described second Metallic rod are fixed, and free end stretches in the space of metal spiral coil containing.
2. cavity body filter according to claim 1, it is characterized in that, the first groove offered by described first fixed station, the second groove offered by described second fixed station, the free end of described first Metallic rod is through stretching in metal spiral coil behind the space of the first groove, and the free end of described second Metallic rod stretches in metal spiral coil through behind the space of the second groove.
3. cavity body filter according to claim 2, it is characterized in that, regulate described first metal bar to enter the degree of depth of metal spiral coil by the diverse location be fixed on by the first insulating part in the first groove, regulate described second metal bar to enter the degree of depth of metal spiral coil by the diverse location be fixed on by the second insulating part in the second groove.
4. cavity body filter according to claim 1, it is characterized in that, described first fixed station is connected by the screw being arranged on the first resonator bottom with the first resonator, and described second fixed station is connected by the screw being arranged on the first resonator bottom with the second resonator.
5. cavity body filter according to claim 1, is characterized in that, described first fixed station and the first resonator are metal material and one-body molded, and described second fixed station and the second resonator are metal material and one-body molded.
6. cavity body filter according to claim 5, is characterized in that, the two ends of described metal spiral coil are welded on the first fixed station and the second fixed station respectively.
7. cavity body filter according to claim 1, is characterized in that, described first insulating part is the first working of plastics, described first Metallic rod rear end bending insertion first working of plastics; Described second insulating part is the second working of plastics, described second Metallic rod rear end bending insertion second working of plastics.
8. cavity body filter according to claim 7, is characterized in that, described first working of plastics and the second working of plastics are all fixed by the screw be arranged on bottom filter cavity.
9. cavity body filter according to claim 1, it is characterized in that, described first fixed station, the first insulating part, the second fixed station, the second insulating part are arranged on the same line, and described metal spiral coil, the first Metallic rod, the second Metallic rod are coaxially arranged.
10. a radio frequency remote equipment, it is characterized in that: comprising: comprise radio-frequency (RF) transceiver module, power amplifier module and the filter of power described in 1 to 9 any one, described radio-frequency (RF) transceiver module is connected with described power amplifier module, and described power amplifier module is connected with described filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754235.5A CN104752796B (en) | 2013-12-31 | 2013-12-31 | A kind of cavity body filter and radio frequency remote equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310754235.5A CN104752796B (en) | 2013-12-31 | 2013-12-31 | A kind of cavity body filter and radio frequency remote equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104752796A true CN104752796A (en) | 2015-07-01 |
| CN104752796B CN104752796B (en) | 2017-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310754235.5A Active CN104752796B (en) | 2013-12-31 | 2013-12-31 | A kind of cavity body filter and radio frequency remote equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN104752796B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337004A (en) * | 2015-11-25 | 2016-02-17 | 江苏贝孚德通讯科技股份有限公司 | Duplexer with quasi-stripline structure |
| CN108847514A (en) * | 2018-06-06 | 2018-11-20 | 佛山市川东磁电股份有限公司 | A kind of isolation structure of automobile-used filter |
| CN110994086A (en) * | 2019-11-12 | 2020-04-10 | 彭青珍 | 5G communication multilayer dielectric waveguide filter |
| WO2021189377A1 (en) * | 2020-03-26 | 2021-09-30 | 诺赛特国际有限公司 | Cavity filter |
| CN111384538B (en) * | 2018-12-29 | 2021-12-24 | 华为技术有限公司 | Filter and base station |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201829595U (en) * | 2010-10-27 | 2011-05-11 | 西安空间无线电技术研究所 | Coupling structure for screw filter |
| CN201838698U (en) * | 2010-11-04 | 2011-05-18 | 宁波泰立电子科技有限公司 | Filter with reinforced coupled structure |
-
2013
- 2013-12-31 CN CN201310754235.5A patent/CN104752796B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201829595U (en) * | 2010-10-27 | 2011-05-11 | 西安空间无线电技术研究所 | Coupling structure for screw filter |
| CN201838698U (en) * | 2010-11-04 | 2011-05-18 | 宁波泰立电子科技有限公司 | Filter with reinforced coupled structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337004A (en) * | 2015-11-25 | 2016-02-17 | 江苏贝孚德通讯科技股份有限公司 | Duplexer with quasi-stripline structure |
| CN108847514A (en) * | 2018-06-06 | 2018-11-20 | 佛山市川东磁电股份有限公司 | A kind of isolation structure of automobile-used filter |
| CN111384538B (en) * | 2018-12-29 | 2021-12-24 | 华为技术有限公司 | Filter and base station |
| CN110994086A (en) * | 2019-11-12 | 2020-04-10 | 彭青珍 | 5G communication multilayer dielectric waveguide filter |
| CN110994086B (en) * | 2019-11-12 | 2021-03-16 | 江苏永鼎通信有限公司 | 5G communication multilayer dielectric waveguide filter |
| WO2021189377A1 (en) * | 2020-03-26 | 2021-09-30 | 诺赛特国际有限公司 | Cavity filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104752796B (en) | 2017-12-08 |
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Effective date of registration: 20190103 Address after: 518104 First, Second and Third Floors of A1, A2, A3 101, A4 of Shajing Street, Shajing Street, Baoan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Tat Fook Technology Co., Ltd. Address before: Room 210, 2nd floor, incubator building, Wuhou High-tech Venture Service Center, No. 33 Wuqing South Road, Chengdu City, Sichuan Province Patentee before: Chengdu Dafu Technology Co.,Ltd. |
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole street, oyster Road, manhole Industrial Company Third Industrial Zone, A1, A2, A3 101, A4 first, second, third layers Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
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