CN216872230U - High-power filter suitable for low-pressure environment - Google Patents
High-power filter suitable for low-pressure environment Download PDFInfo
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- CN216872230U CN216872230U CN202220821828.3U CN202220821828U CN216872230U CN 216872230 U CN216872230 U CN 216872230U CN 202220821828 U CN202220821828 U CN 202220821828U CN 216872230 U CN216872230 U CN 216872230U
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Abstract
The utility model discloses a high-power filter suitable for a low-pressure environment, which relates to the technical field of high-power cavity filters and comprises a main body, a plurality of coaxial resonant columns, a glass insulator interface and a cover plate, wherein the main body is provided with a cavity, and the glass insulator interface is connected with the coaxial resonant columns through port silver-plated wires; the cover plate seals the cavity to form a resonant cavity, the cover plate is provided with a plurality of tuning screw holes and coupling screw holes, and the tuning screw holes and the coupling screw holes are arranged in a staggered manner; the tuning screws penetrate through tuning screw holes, extend into the cavity and are arranged corresponding to the coaxial resonant columns; the coupling screws penetrate through the coupling screw holes and extend into the cavity; the medium and the flying rod are arranged between the adjacent tuning screws; the flying rod penetrates through the medium, and a gap is reserved between the two end parts of the flying rod and the coaxial resonant column, so that the problem that the filter is easily damaged due to high power in a low-pressure environment is solved.
Description
Technical Field
The utility model relates to the technical field of high-power cavity filters, in particular to a high-power filter suitable for a low-pressure environment.
Background
The filter is a communication device with wide application, generally has the forms of a band-pass filter, a low-pass filter, a high-pass filter and the like, the problems of power capacity, pass-band voltage standing wave ratio, insertion loss and the like need to be considered when designing a high-power filter, and when the pass-band voltage standing wave ratio and the insertion loss are large, the problems of heating, power capacity reduction, system performance deterioration and the like can be caused.
The existing cavity filter has the advantages of low loss, high power capacity, strong out-of-band suppression and good temperature stability, but in a low-pressure environment, the high power easily causes the filter to be damaged, the suppression effect of the filter is poor, and the precision of the filter is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems that a filter has poor suppression effect and is easy to influence an entire system, and aims to provide a high-power filter suitable for a low-pressure environment, solve the problems that the filter has poor suppression effect and the performance of the filter is easy to damage due to high power in the low-pressure environment, realize high suppression of the filter and improve the precision of the filter.
The utility model is realized by the following technical scheme:
a high-power filter suitable for a low-pressure environment comprises a main body, a plurality of coaxial resonant columns, a glass insulator interface and a cover plate, wherein the main body is provided with a cavity, and the glass insulator interface is connected with the coaxial resonant columns through port silver-plated wires;
the cover plate is provided with a plurality of tuning screw holes and coupling screw holes, and the tuning screw holes and the coupling screw holes are arranged in a staggered manner;
the high-power filter suitable for the low-pressure environment further comprises:
the tuning screws penetrate through tuning screw holes, extend into the cavity and are arranged corresponding to the coaxial resonant columns;
the coupling screws penetrate through the coupling screw holes and extend into the cavity;
a medium and a fly rod, wherein the medium is arranged between the adjacent tuning screws; the flying bar penetrates through the medium, and gaps are reserved between two end parts of the flying bar and the coaxial resonant columns.
The glass insulator interface is used for inputting or outputting signals, and a coupling screw is arranged between the adjacent tuning screws and is used for tuning the coupling quantity; the resonance frequency is adjusted by adjusting the tuning screw rod, and the coupling amount is adjusted by adjusting the coupling screw rod, so that the technical index of the filter is realized; the dielectric is arranged between the two coaxial resonant columns, is used for supporting and insulating, is convenient to assemble, avoids bad indexes of the filter caused by short circuit of the flying rod and the cavity, improves the precision of the filter, is provided with the flying rod, provides two transmission zero points which are symmetrical left and right for a pass band, and realizes high suppression;
the cover plate seals the cavity and guarantees the sealing performance of the cavity, so that when the external condition is low pressure, the inside of the filter is kept at normal temperature and normal pressure, and the problem that the filter cannot normally work due to high power in a low-pressure environment is solved.
Furthermore, a step structure is arranged above the cavity, the cover plate comprises an outer cover plate and an inner cover plate, the tuning screw hole and the coupling screw hole are arranged on the inner cover plate, and the inner cover plate is matched with the step structure; the outer cover plate is arranged above the inner cover plate and is tightly matched with the cavity. The upper part of the inner cover plate and the outer cover plate are processed by point sealing glue, so that the sealing performance of the product is further ensured, and the high power of the filter is realized.
The inner cover plate is detachably connected with the stepped structure and the outer cover plate is detachably connected with the main body through screws, and the inner cover plate is provided with a tuning screw rod and a coupling screw rod which can adjust the index of the filter.
Furthermore, the glass insulator interface is connected with the main body, and a sealing piece is arranged at the joint, so that the sealing performance of the filter is further improved, and high power is realized.
The sealing member is a material or a part for preventing fluid or solid particles from leaking from an adjacent joint surface and preventing foreign matters such as dust, moisture and the like from intruding into parts inside the machine equipment; preferably comprises a rubber ring and a sealant.
Furthermore, the main body is further provided with a partition board for fixing the medium, the partition board is clamped with the medium, the partition board and the main body are made of the same material, the manufacturing process is simple, and meanwhile, the medium is convenient to install and suitable for mass production.
Furthermore, the lengths of the tuning screw and the coupling screw extending into the cavity are adjustable, the tuning screw is used for adjusting the resonant frequency, and the coupling screw is used for adjusting the coupling amount, so that the precision of the filter is improved, the overall index of the product is adjustable, the index consistency of the product is improved, and mass production is facilitated.
Furthermore, a gap exists between the coaxial resonance column and the inner cover plate, and the tuning screw is adjusted to enter the depth of the coaxial resonance column, so that the fine tuning of the resonance frequency is realized, the frequency selection is more accurate, and the precision of the filter is improved.
Furthermore, the coaxial resonance column is provided with a concave hole for the tuning screw to extend into.
When the tuning screw rod stretches into the cavity, the concave hole serves as an avoiding position, so that the coaxial resonance column is not in contact with the tuning screw rod, the tuning screw rod can stretch into the coaxial resonance column of the cavity, the filter has a large resonance frequency adjusting range, and the producibility of products is further improved.
Furthermore, the main body and the partition plate are of an integrally formed structure, the manufacturing process is simple, and the novel partition plate is suitable for mass production.
Further, the coaxial resonance column arranged adjacent to the medium is welded with the port silver-plated wire, so that proper port time delay is guaranteed.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the glass insulator interface is connected with the coaxial resonance column through a port silver-plated wire, is used for inputting or outputting signals and is connected with the coaxial resonance column through the port silver-plated wire, so that proper port time delay is ensured;
the cover plate is provided with a plurality of tuning screw holes and coupling screw holes, and the tuning screw holes and the coupling screw holes are arranged in a staggered manner; the tuning screws penetrate through tuning screw holes, extend into the cavity, are arranged corresponding to the coaxial resonance columns and are used for adjusting resonance frequency; the coupling screws penetrate through the coupling screw holes and extend into the cavity to adjust the coupling amount, and the tuning screws and the coupling screws are arranged in a staggered mode, so that the interference of higher harmonics to signals is reduced, and the precision of the filter is improved; the overall index of the product can be adjusted to ensure the optimal index, and the method is suitable for mass production.
The medium is arranged between the adjacent tuning screws and used for supporting and insulating, so that the assembly is convenient, the phenomenon that the flying rod and the cavity are short-circuited to cause poor indexes of the filter is avoided, and the precision of the filter is improved; the flying rod penetrates through the medium to provide two transmission zero points which are symmetrical left and right for the pass band, so that high suppression is realized, and the performance of the filter is improved;
the cavity is sealed through the mode that sets up inside and outside two-layer apron and sealed glue processing in apron top point including above-mentioned, guarantees its leakproofness for when external condition is the low pressure, this wave filter is inside still to keep under the normal atmospheric temperature and pressure circumstances, when having solved the low pressure environment, and high-power leads to the unable normal work's of wave filter problem easily.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:
FIG. 1 is an exploded view of the overall structure;
FIG. 2 is a top view of the internal structure of the chamber through the cover plate;
FIG. 3 is a schematic diagram of the internal structure of the chamber;
FIG. 4 is a schematic diagram of an inner deck structure;
fig. 5 is a schematic view of the connection structure of the medium and the flying bar.
Reference numbers and corresponding part names in the drawings:
10-main body, 11-cavity, 12-stepped structure, 13-partition plate, 20-coaxial resonant column, 21-first coaxial resonant column, 22-second coaxial resonant column, 23-third coaxial resonant column, 24-fourth coaxial resonant column, 25-concave hole, 30-cover plate, 31-inner cover plate, 32-outer cover plate, 40-glass insulator interface, 50-tuning screw, 51-first tuning screw, 52-second tuning screw, 53-third tuning screw, 54-fourth tuning screw, 61-port silver plating wire, 62-flying rod, 63-medium, 70-coupling screw, 71-first coupling screw, 72-second coupling screw and 73-third coupling screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
When the filter rises to 25000 meters of high altitude from the ground, the air pressure outside the filter is gradually reduced, and the normal work of the filter is influenced.
As shown in fig. 1, 2 and 5, embodiment 1 provides a high power filter suitable for a low pressure environment, which includes a main body 10, a coaxial resonant post 20, a glass insulator interface 40 and a cover plate 30, where the main body 10 is provided with a cavity 11, the glass insulator interface 40 is connected to the coaxial resonant post 20 through a port silver-plated wire 61, the glass insulator interface 40 includes an input glass insulator interface 40 and an output glass insulator interface 40, the input glass insulator interface 40 is used to connect an input rf connector and an input signal, the output glass insulator interface 40 is used to connect an output rf connector and an output signal;
the cover plate 30 seals the cavity 11 to ensure the sealing performance, the cover plate 30 includes an inner cover plate 31 and an outer cover plate 32, the inner cover plate 31 is provided with a tuning screw hole, a coupling screw hole and a plurality of threaded holes, and the tuning screw hole and the coupling screw hole are arranged in a staggered manner.
The high power filter suitable for low pressure environment further comprises:
as shown in fig. 4, four tuning screws 50, the tuning screws 50 being disposed corresponding to tuning screw holes, the tuning screws 50 penetrating the tuning screw holes, extending into the cavity 11, and being disposed corresponding to the coaxial resonant columns 20;
three coupling screws 70, the coupling screws 70 passing through the coupling screw holes and extending into the cavity 11;
the four tuning screws 50 are a first tuning screw 51, a second tuning screw 52, a third tuning screw 53 and a fourth tuning screw 54; the three coupling screws 70 are a first coupling screw 71, a second coupling screw 72, and a third coupling screw 73; a first coupling screw 71 is disposed between the first tuning screw 51 and the second tuning screw 52, a second coupling screw 72 is disposed between the second tuning screw 52 and the third tuning screw 53, and a third coupling screw 73 is disposed between the third tuning screw 53 and the fourth tuning screw 54;
as shown in fig. 3, the coaxial resonant column 20 includes a first coaxial resonant column 21, a second coaxial resonant column 22, a third coaxial resonant column 23, and a fourth resonant column, the first coaxial resonant column 21 is disposed corresponding to the first tuning screw 51, the second coaxial resonant column 22 is disposed corresponding to the second tuning screw 52, the third coaxial resonant column 23 is disposed corresponding to the third tuning screw 53, the fourth coaxial resonant column 24 is disposed corresponding to the fourth tuning screw 54, a medium 63 is disposed between the first coaxial resonant column 21 and the fourth coaxial resonant column 24, a flying rod 62 is inserted into the medium 63, and both end portions of the flying rod 62 are spaced apart from the first coaxial resonant column 21 and the fourth coaxial resonant column 24.
The glass insulator interface 40 is used for inputting or outputting signals, a coupling screw 70 is arranged between adjacent tuning screws 50 and used for adjusting the coupling amount, the resonant frequency is adjusted by adjusting the tuning screws 50, the coupling amount is adjusted by adjusting the coupling screw 70, and the technical index requirements of the filter are met; a medium 63 is arranged between the first coaxial resonant column 21 and the fourth coaxial resonant column 24, the medium 63 is used for supporting and insulating, so that the assembly is convenient, and the defect of poor filter index caused by short circuit of the flying rod 62 and the cavity 11 is avoided;
the cover plate 30 seals the cavity 11 to ensure the sealing performance, so that when the external condition is low pressure, the interior of the filter is kept at normal temperature and normal pressure, and the problem that the filter cannot work normally due to high power easily in a low-pressure environment is solved.
The coaxial resonator is used, the characteristic of high Q value of the coaxial resonator is utilized, and low insertion loss is realized.
As shown in fig. 3, in a specific embodiment, a step structure 12 is disposed above the cavity 11, and the inner cover plate 31 and the step structure 12 are connected by a screw and a threaded hole that are engaged with each other; the cover plate 30 is further provided with an outer cover plate 32, and the outer cover plate 32 is disposed above the inner cover plate 31 and is tightly fitted to the cavity 11. The space between the upper part of the inner cover plate 31 and the outer cover plate 32 is processed by point sealing glue, so that the sealing performance of the product is further ensured, and high power is realized.
The resonant frequency and the coupling quantity of the filter can be adjusted on the inner cover plate 31, so that the overall index of the product can be adjusted, the outer cover plate 32 is arranged on the inner cover plate 31, the sealing effect is achieved, the index consistency of the product is improved, and the mass production is facilitated.
In a specific embodiment, the glass insulator interface 40 is connected to the main body 10, and a rubber ring is disposed at the joint, so that the sealing performance of the filter is further improved, and high power is realized.
In a specific embodiment, the main body 10 is further provided with a partition plate 13 for fixing the medium 63, the partition plate 13 is clamped with the medium 63, the partition plate 13 and the main body 10 are made of the same material, the manufacturing process is simple, and meanwhile, the medium 63 is convenient to install and suitable for mass production.
In a specific embodiment, the medium 63 abuts against the inner cover plate 31, so that the insulation effect is improved, the filter index is further prevented from being poor due to the short circuit between the flying bar 62 and the cavity 11, and the precision of the filter is improved.
In a specific embodiment, the lengths of the tuning screw 50 and the coupling screw 70 extending into the cavity 11 are adjustable, the tuning screw 50 is used for adjusting the resonant frequency, and the coupling screw 70 is used for adjusting the coupling amount, so that the precision and consistency of the filter are improved, and mass production is facilitated.
In a specific embodiment, a gap exists between the coaxial resonant column 20 and the inner cover plate 31, and the tuning screw 50 is adjusted to enter the coaxial resonant column 20 to a depth, so that the resonant frequency is finely adjusted, the frequency selection is more accurate, and the precision of the filter is improved.
In a specific embodiment, the coaxial resonant post 20 is provided with a recess 25 for the tuning screw 50 to extend into.
When the tuning screw 50 extends into the cavity 11, the concave hole 25 is used as an avoiding position, so that the coaxial resonant column 20 is not in contact with the tuning screw 50, the tuning screw 50 can extend into the cavity 11, the filter is ensured to have a large resonant frequency adjusting range, the index consistency of products is improved, and mass production is facilitated.
In a specific embodiment, the main body 10 and the partition plate 13 are integrally formed, so that the manufacturing process is simple and suitable for mass production.
In a specific embodiment, the first coaxial resonant column 21 and the fourth coaxial resonant column 24 which are arranged adjacent to the medium 63 are welded to the port silver plated wire 61, so that proper port time delay is ensured, and the precision of the filter is improved.
Tests show that at 25000 m high altitude, the in-band loss of the filter is less than 0.6dB, the in-band standing wave ratio is less than 1.3, and the power capacity is more than 130W.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The high-power filter suitable for the low-pressure environment is characterized by comprising a main body (10), a plurality of coaxial resonant columns (20), a glass insulator interface (40) and a cover plate (30), wherein the main body (10) is provided with a cavity (11), and the glass insulator interface (40) is connected with the coaxial resonant columns (20) through port silver-plated wires (61);
the cavity (11) is sealed by the cover plate (30), the cover plate (30) is provided with a plurality of tuning screw holes and coupling screw holes, and the tuning screw holes and the coupling screw holes are arranged in a staggered mode;
the high-power filter suitable for the low-pressure environment further comprises:
the tuning screws (50) penetrate through tuning screw holes, extend into the cavity (11), and are arranged corresponding to the coaxial resonant columns (20);
the coupling screws (70) penetrate through the coupling screw holes and extend into the cavity (11);
a medium (63) and a fly rod (62), said medium (63) being disposed between adjacent said tuning screws (50); the fly rod (62) penetrates through the medium (63), and gaps are reserved between two end parts of the fly rod (62) and the coaxial resonant column (20).
2. A high power filter adapted for use in a low pressure environment, according to claim 1, wherein a step structure (12) is provided above the cavity (11), the cover plate (30) comprises an outer cover plate (32) and an inner cover plate (31), the tuning screw hole and the coupling screw hole are provided in the inner cover plate (31), and the inner cover plate (31) is adapted to the step structure (12); the outer cover plate (32) is arranged above the inner cover plate (31) and is tightly matched with the cavity (11).
3. The high power filter for low pressure environment according to claim 2, wherein the glass insulator interface (40) is connected to the main body (10) and a sealing member is provided at the connection.
4. A high power filter suitable for use in a low pressure environment according to claim 1, wherein the main body (10) is further provided with a partition (13) for fixing the medium (63), and the partition (13) is clamped with the medium (63).
5. A high power filter adapted for use in a low pressure environment according to claim 4, wherein said medium (63) abuts the inner cover plate (31).
6. A high power filter suitable for use in a low pressure environment according to claim 1 wherein the tuning screw (50) and the coupling screw (70) are adjustable in length extending into the cavity (11).
7. A high power filter for use in low pressure environments according to claim 2, wherein there is a gap between the coaxial resonator post (20) and the inner cover plate (31).
8. A high power filter adapted for use in a low pressure environment according to claim 7, wherein the coaxial resonating column (20) is provided with a recess (25) for the tuning screw (50) to protrude into.
9. A high power filter for use in low pressure environments according to claim 5, wherein the body (10) and the partition (13) are of one-piece construction.
10. A high power filter suitable for use in a low pressure environment according to claim 1 wherein the coaxial resonating post (20) disposed adjacent to the dielectric (63) is soldered to the port silver plated wire (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220821828.3U CN216872230U (en) | 2022-04-11 | 2022-04-11 | High-power filter suitable for low-pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220821828.3U CN216872230U (en) | 2022-04-11 | 2022-04-11 | High-power filter suitable for low-pressure environment |
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| Publication Number | Publication Date |
|---|---|
| CN216872230U true CN216872230U (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220821828.3U Active CN216872230U (en) | 2022-04-11 | 2022-04-11 | High-power filter suitable for low-pressure environment |
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| CN (1) | CN216872230U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115224460A (en) * | 2022-08-05 | 2022-10-21 | 河北优圣通信科技有限公司 | Double-layer waterproof outdoor combiner and combiner assembly |
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2022
- 2022-04-11 CN CN202220821828.3U patent/CN216872230U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115224460A (en) * | 2022-08-05 | 2022-10-21 | 河北优圣通信科技有限公司 | Double-layer waterproof outdoor combiner and combiner assembly |
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