CN205376703U - Anti interference filtration device - Google Patents
Anti interference filtration device Download PDFInfo
- Publication number
- CN205376703U CN205376703U CN201620003118.4U CN201620003118U CN205376703U CN 205376703 U CN205376703 U CN 205376703U CN 201620003118 U CN201620003118 U CN 201620003118U CN 205376703 U CN205376703 U CN 205376703U
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- cavity
- filtration device
- cover plate
- interference filtration
- resonant rod
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Abstract
The utility model discloses an anti interference filtration device, including apron (1) and cavity (2), the closing cap is glued on cavity (2) through the shielding to apron (1), and the bottom of cavity (2) is provided with heating panel (3), is provided with mounting base (4) directly over the heating panel, be provided with resonance bar (5) on mounting base (4), the top of resonance bar (5) is provided with medium loading disc (6), be provided with with resonance bar tuning screw rod (9) to the matching on the apron of medium loading disc (6) top, the one end of resonance bar (5) and mounting base (4) contact be provided with counter bore (10), the pore wall of counter bore (10) forms annulus region (11) with the outer fringe of resonance bar (5), mounting base (4) on be provided with with annulus region (11) matched with annular groove (12). The utility model provides an anti interference filtration device, the closing cap is glued through the shielding to the apron on the cavity, can effectively avoid external interference.
Description
Technical field
This utility model relates to a kind of anti-interference filtration device.
Background technology
Continuous progress along with the reach of science and society, traditional metal coaxial resonant cavity wave filter cannot meet the needs of technical development in the future, TM mould (TM mode, TransverseMagneticMode) to have insertion loss low and bear the features such as power is big due to it for dielectric filter, increasingly obtains the attention of Radio Frequency Engineer.But, the resonant rod that traditional TM mould dielectric filter adopts is cylinder, and the height of wave filter is required for being designed into significantly high, it is impossible to meet the small form factor requirements of current communication base station wave filter；Additionally, existing TM mould dielectric filter there is also the shortcomings such as cost height, narrow bandwidth.
For solving the problems referred to above, the patent that application number is " 201220186043.X " provides " a kind of height is low, volume is little, with wide miniaturization TM mould dielectric filter ", but technique scheme still has some shortcomings:
(1) sealing between cavity and cover plate is not compact, it is possible to can be subject to external electromagnetic interference；
(2) not there is good radiator structure；
(3) adopting dual resonant cavity to be filtered, cost is high.
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that a kind of anti-interference filtration device, and cover plate is sealed on cavity by shielding glue, it is possible to be prevented effectively from external interference.
The purpose of this utility model is achieved through the following technical solutions: a kind of anti-interference filtration device, including cover plate and cavity;Cover plate by shield glue be sealed on cavity, the bottom of cavity is provided with heat sink, heat sink be arranged above install pedestal;Install and pedestal is provided with resonant rod;The top of resonant rod is provided with coated by dielectric dish;Cover plate above coated by dielectric dish is provided with resonant rod to the tuning screw mated;
Described resonant rod and the one end installing base into contact are provided with counterbore, and the outer rim of the hole wall of counterbore and resonant rod forms annulus;
Described installing is provided with, on pedestal, the annular groove matched with annulus.
Described resonant rod is microwave-medium ceramics resonant rod.
Described cover plate is spill cover plate, and the internal diameter of cover plate is identical with the outside dimension of cavity, cover plate can directly cover with on cavity.
Described installation pedestal is heat conducting base, and further, heat conducting base can select metal heat-conducting pedestal or ceramic pedestal.
Described annulus is equivalently-sized with annular groove.
Described a kind of anti-interference filtration device, also includes input port and output port, and the center of input port, the center of output port and the center of cavity are on same level straight line.
Described input port includes rectangular waveguide mouth, connects diaphragm and dielectric resonator；Rectangular waveguide mouth connects with dielectric resonator by connecting diaphragm, and dielectric resonator is connected with cavity.
Further, junctional membrane plate shape is " H " type or T-shape, connects and is provided with adjustment screw on diaphragm；
Further, dielectric resonator includes resonator cavity and the medium being fixed in resonator cavity, for the energy coupling amount of rectangular waveguide mouth to dielectric resonator is finely tuned；
Further, rectangular waveguide mouth is rectangular metal cavity.
Described output port includes rectangle output waveguide mouth, and its essence is also rectangular metal cavity.
Described connection diaphragm is the sheet metal with cavity.
Described shielding glue is electromagnetic shielding glue.
The beneficial effects of the utility model are: (1) cover plate is sealed on cavity by shielding glue, it is possible to be prevented effectively from external interference.
(2) arranging counterbore on resonant rod, counterbore and resonant rod outer rim form annulus, and are provided with, on pedestal, the groove matched with annulus installing so that resonant rod can be directly arranged on installation pedestal, easy to assembly and steadiness is high.
(3) by the counterbore on resonant rod, annulus, with the coordinating of pedestal upper groove is installed, add the contact area installing pedestal with resonant rod, be heat conducting base owing to installing pedestal again, pedestal is installed and is arranged below heat sink, therefore the radiating effect of resonant rod can be dramatically increased.
(4) input port is provided with dielectric resonator, it is possible to matched filtering operation with the filter in cavity；Adopt and connect diaphragm connection rectangular waveguide mouth and dielectric resonator, more stable than existing metal wire connected mode.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of resonant rod；
Fig. 3 is the structural representation installing pedestal；
Fig. 4 is the principle schematic of input port；
In figure, 1-cover plate, 2-cavity, 3-heat sink, 4-installs pedestal, 5-resonant rod, 6-coated by dielectric dish, 7-input port, 8-output port, 9-tuning screw, 10-counterbore, 11-annulus, 12-annular groove, 13-rectangular waveguide mouth, 14-connects diaphragm, 15-dielectric resonator.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As it is shown in figure 1, a kind of anti-interference filtration device, including cover plate 1 and cavity 2;Cover plate 1 by shield glue be sealed on cavity 2, the bottom of cavity 2 is provided with heat sink 3, heat sink be arranged above install pedestal 4;Install and pedestal 4 is provided with resonant rod 5;The top of resonant rod 5 is provided with coated by dielectric dish 6;Cover plate above coated by dielectric dish 6 is provided with resonant rod to the tuning screw 9 mated;
As in figure 2 it is shown, the outer rim that one end that described resonant rod 5 contacts with installation pedestal 4 is provided with counterbore 10, the hole wall of counterbore 10 and resonant rod 5 forms annulus 11;
As it is shown on figure 3, described installing is provided with, on pedestal 4, the annular groove 12 matched with annulus 11.
Match with annular groove 12 in annulus 11 so that resonant rod can be directly arranged on installation pedestal, and stability is high;If bonding by seccotine further, then can increase resonant rod 5 and the stability installed between pedestal 4 further.
Described resonant rod 5 is microwave-medium ceramics resonant rod.
Described cover plate 1 is spill cover plate, and the internal diameter of cover plate 1 is identical with the outside dimension of cavity 2, cover plate 1 can directly cover with on cavity 2.
Described installation pedestal 4 is heat conducting base.
Described annulus 11 is equivalently-sized with annular groove 12.
As it is shown in figure 1, described a kind of anti-interference filtration device, also including input port 7 and output port 8, the center of input port 7, the center of output port 8 and the center of cavity are on same level straight line.
As shown in Figure 4, described input port 7 includes rectangular waveguide mouth 13, connects diaphragm 14 and dielectric resonator 15；Rectangular waveguide mouth 13 connects with dielectric resonator 15 by connecting diaphragm 14, and dielectric resonator 15 is connected with cavity 2.
Described output port 8 includes rectangle output waveguide mouth.
Described connection diaphragm 14 is the sheet metal with cavity.
Described shielding glue is electromagnetic shielding glue.
Carrying out signal input from input port 7, in the process of signal input, the metallic membrane rectangular waveguide mouth in input port is finely tuned to the energy coupling amount of dielectric resonator, by output port 8 is exported after being filtered by the signal of input in cavity 2；Existence just because of input port medium resonator a, it is only necessary to cavity just can complete filtering operation, it is ensured that filter effect.
In filtering, owing to cover plate 1 is spill cover plate, the internal diameter of cover plate 1 is identical with the outside dimension of cavity 2, cover plate 1 can directly cover with on cavity 2, installation is stable, good sealing effect, and cover plate 1 is sealed on cavity 2 by shielding glue, further enhance sealing effectiveness, it is possible to the external interference well avoided.
In signal filtering process, resonant rod 5 can produce heat, but owing to resonant rod 5 is big with installation pedestal 4 contact area, installing pedestal 4 is heat conducting base, it is possible to discharged by heat sink by heat in time, it is ensured that the normal operation of filter.
Claims (10)
1. an anti-interference filtration device, it is characterised in that: include cover plate (1) and cavity (2);Cover plate (1) by shield glue be sealed on cavity (2), the bottom of cavity (2) is provided with heat sink (3), heat sink be arranged above install pedestal (4);Install and pedestal (4) is provided with resonant rod (5);The top of resonant rod (5) is provided with coated by dielectric dish (6);The cover plate of coated by dielectric dish (6) top is provided with resonant rod to the tuning screw (9) mated;
One end that described resonant rod (5) contacts with installation pedestal (4) is provided with the outer rim of counterbore (10), the hole wall of counterbore (10) and resonant rod (5) and forms annulus (11);
Described installation pedestal (4) is provided with the annular groove (12) matched with annulus (11).
2. a kind of anti-interference filtration device according to claim 1, it is characterised in that: described resonant rod (5) is microwave-medium ceramics resonant rod.
3. a kind of anti-interference filtration device according to claim 1, it is characterized in that: described cover plate (1) is spill cover plate, the internal diameter of cover plate (1) is identical with the outside dimension of cavity (2), cover plate (1) can directly cover with on cavity (2).
4. a kind of anti-interference filtration device according to claim 1, it is characterised in that: described installation pedestal (4) is heat conducting base.
5. a kind of anti-interference filtration device according to claim 1, it is characterised in that: described annulus (11) is equivalently-sized with annular groove (12).
6. a kind of anti-interference filtration device according to claim 1, it is characterised in that: also including input port (7) and output port (8), the center of input port (7), the center of output port (8) and the center of cavity are on same level straight line.
7. a kind of anti-interference filtration device according to claim 6, it is characterised in that: described input port (7) includes rectangular waveguide mouth (13), connects diaphragm (14) and dielectric resonator (15)；Rectangular waveguide mouth (13) connects with dielectric resonator (15) by connecting diaphragm (14), and dielectric resonator (15) is connected with cavity (2).
8. a kind of anti-interference filtration device according to claim 6, it is characterised in that: described output port (8) includes rectangle output waveguide mouth.
9. a kind of anti-interference filtration device according to claim 7, it is characterised in that: described connection diaphragm (14) is the sheet metal with cavity.
10. a kind of anti-interference filtration device according to claim 1, it is characterised in that: described shielding glue is electromagnetic shielding glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003118.4U CN205376703U (en) | 2016-01-05 | 2016-01-05 | Anti interference filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620003118.4U CN205376703U (en) | 2016-01-05 | 2016-01-05 | Anti interference filtration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205376703U true CN205376703U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620003118.4U Active CN205376703U (en) | 2016-01-05 | 2016-01-05 | Anti interference filtration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205376703U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029135A1 (en) * | 2018-08-08 | 2020-02-13 | 深圳市大富科技股份有限公司 | Resonator, and cavity filter |
-
2016
- 2016-01-05 CN CN201620003118.4U patent/CN205376703U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029135A1 (en) * | 2018-08-08 | 2020-02-13 | 深圳市大富科技股份有限公司 | Resonator, and cavity filter |
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| GR01 | Patent grant |