CN216750253U - All-channel adjustable VHF band-pass filter - Google Patents
All-channel adjustable VHF band-pass filter Download PDFInfo
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- CN216750253U CN216750253U CN202122085833.0U CN202122085833U CN216750253U CN 216750253 U CN216750253 U CN 216750253U CN 202122085833 U CN202122085833 U CN 202122085833U CN 216750253 U CN216750253 U CN 216750253U
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Abstract
The utility model provides a CH 6-12 full-channel adjustable VHF band-pass filter which comprises a cavity, a resonant rod, a coupling ring, a coupling dumbbell and a port, wherein the resonant rod is in a segmented form, and the cavity is provided with a coupling window and a coupling dumbbell mounting hole. Wherein the resonance rod is divided into a fixed section which is arranged on the cavity wall; the movable section is divided into a resonant rod adjusting section, a resonant rod adjusting rod and an adjusting rod fixing cover, the adjusting rod is fixedly connected to the resonant rod adjusting section through the adjusting rod fixing cover, and the resonant frequency is adjusted through adjusting the extending amount of the adjusting rod outside the cavity. The coupling dumbbell part comprises a coupling dumbbell, a dumbbell connecting screw and a coupling dumbbell insulating sheet. The port comprises a port outer conductor, a port inner conductor, a port insulating support and a port coupling adjusting block. The VHF frequency band frequency-changing device has the advantages of simple structure, easy operation, high adjusting precision and efficiency and strong practicability, and does not need to disassemble and replace parts of a cavity any more when the VHF frequency band is changed.
Description
Technical Field
The utility model relates to the field of radio broadcast communication equipment, in particular to a VHF (very high frequency) band-pass filter with an adjustable safe channel.
Background
The VHF filter is a key device constituting a broadcast transmitting multiplexer, which is widely applied to broadcast television transmitting stations, and the multiplexer is a technical device which can enable a plurality of transmitters of different channels to simultaneously transmit respective programs by using the same pair of broadband antennas without mutual interference.
Under the condition that the frequency band above UHF700MHz is divided into 5G communication, the VHF wave band application rate of CH 6-CH 13 is greatly improved, currently, most of VHF filters used by broadcast television transmitting stations are fixed frequency filters, when the design frequency changes, the whole filter needs to be replaced or the filter needs to be disassembled to replace parts, and the process is complicated and consumes too much time, labor and material resources.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned disadvantages of the prior art, the present invention provides a VHF band-pass filter with adjustable full channels, so as to overcome the drawbacks of the prior art.
In order to achieve the purpose, the utility model provides a VHF band-pass filter with adjustable full channels, which comprises a cavity, a coupling ring component, a port component, a resonance rod component and a dumbbell component, wherein the cavity is provided with a plurality of coupling ring components; the cavity is a plate-spliced six-cavity, and coupling windows are designed among the single cavities; the coupling ring part is arranged in the cavity and can meet the full-channel coupling requirement through adjustment; the port component is designed with an adjustable component, and the coupling requirement of a full-channel port is met through adjustment; the resonant rod assemblies are arranged in the six single cavities, and can meet the requirements of full-channel frequency through adjustment; the dumbbells are mounted within the cavity to provide cross-coupling.
By adopting the technical scheme, the filter can be adjustable in the whole VHF wave band range of CH 6-12.
As a further description of the VHF band-pass filter with the adjustable full channel of the present invention, preferably, the cavity is a plate-spliced cavity, a six-cavity form is formed by splicing, and a coupling window is designed between each single cavity.
As a further description of the VHF band-pass filter with the adjustable full frequency channel according to the present invention, preferably, the coupling ring component includes an inner flange, an outer flange, a coupling ring, and a locking ring, and the coupling ring is fixed in the cavity through the inner flange, the outer flange, and the locking ring.
By adopting the technical scheme, the size of the coupling ring in the cavity can be changed by changing the extension of the coupling ring outside the cavity, so that the coupling amount between the cavities can be adjusted.
As a further description of the VHF band-pass filter with the adjustable full channel according to the present invention, preferably, the port component includes a port outer conductor, a port inner conductor, a port insulating support, and a port coupling adjustment block, the port outer conductor is fixedly connected to the outside of the cavity, the port inner conductor is fixedly connected between the port outer conductor and the cavity through the port insulating support, and the port coupling adjustment block is movably connected between the port inner conductor and the cavity.
By adopting the technical scheme, the port coupling adjusting block can move along the radial direction of the port inner conductor between the port inner conductor and the cavity, so that the port coupling amount is changed.
As a further description of the VHF band-pass filter with the adjustable full channel according to the present invention, preferably, the resonant rod assembly includes a resonant rod fixing section, a resonant rod moving section, a resonant rod adjusting rod, an adjusting rod fixing cover, a resonant rod outer flange, and an adjusting rod locking ring.
The resonant rod fixing section and the resonant rod outer flange are fixedly connected to the cavity, the resonant rod moving section and the adjusting rod are fixedly connected through the adjusting rod fixing cover, the resonant rod moving section is installed on the resonant rod fixing section, the adjusting rod extends out of the cavity through the center holes of the resonant rod fixing section and the resonant rod outer flange, and the adjusting rod is fastened through the adjusting rod locking ring.
Through adopting above-mentioned technical scheme, adjust the overhanging volume of cavity of pole through adjusting the resonance stick, can adjust resonance cavity resonant frequency, it is adjustable to satisfy the frequency full channel, and after the frequency adjustment was accomplished, the accessible locking ring carried out frequency locking.
As a further description of the VHF band-pass filter with adjustable full channels according to the present invention, the VHF band-pass filter preferably includes a dumbbell assembly installed between the two middle cavities.
By adopting the technical scheme, the cavity can increase cross coupling, so that the suppression characteristic outside the pass band of the filter is optimized.
The utility model has the following beneficial effects:
through changing port, coupling ring part, resonance stick structure, change port, coupling, resonance stick into adjustable form, under the condition that does not influence electric index of wave filter and change cavity spare part, can carry out CH6 ~ 12 full channel adjustable, greatly reduced change required time, manpower, material resources frequently.
Drawings
FIG. 1 is a schematic diagram of the filter as a whole;
FIG. 2 is a diagram of a filter port, resonant bar, coupling, structure;
fig. 3 shows a structure of a filter dumbbell.
Description of reference numerals:
1. a cavity; 2. a coupling ring component; 21. a coupling ring; 22. an inner flange; 23. an outer flange; 24. locking a ring; 3. a port member; 31. a port outer conductor; 32. a port inner conductor; 33. a port insulation support; 34. A port coupling adjusting block; 4. a resonant rod assembly; 41. a resonance bar fixing section; 42. a resonant rod active section; 43. A resonant rod adjusting rod; 44. a regulating rod fixing cover; 45. a resonant rod outer flange; 46. a locking ring of an adjusting rod; 5. a dumbbell component; 51. a dumbbell; 52. the dumbbell is connected with the screw rod; 53. the dumbbell is supported in an insulating mode.
Detailed Description
To further understand the structure, characteristics and other objects of the present invention, the following detailed description is given with reference to the accompanying preferred embodiments, which are only used to illustrate the technical solutions of the present invention and are not to limit the present invention.
The utility model provides a VHF band-pass filter of full channel adjustable, looks into figure 1, includes cavity 1, coupling ring part 2, port part 3, resonance stick subassembly 4 and dumbbell part 5, and cavity 1 is the board and pieces together the filter casing, divide into six single chambeies, has seted up the coupling window between single chamber and the single chamber.
Looking at fig. 2, the coupling ring component 2 comprises a coupling ring 21, a coupling ring inner flange 22, a coupling ring outer flange 23 and a coupling ring locking ring 24, the coupling ring inner flange 22 and the coupling ring outer flange 23 are fixedly connected in the cavity and the outer side respectively, the coupling ring locking ring 24 is installed in the coupling ring outer flange 23, the coupling ring 21 penetrates through the coupling ring inner flange 22, the coupling ring outer flange 23 and the locking ring 24 to extend to the outer side of the cavity, the coupling amount between the cavities can be adjusted by adjusting the extension amount of the outer side of the cavity of the coupling ring 21, and then the coupling ring locking ring 24 is used for locking and fixing.
Looking at fig. 2, the port component 3 includes a port outer conductor 31, a port inner conductor 32, a port insulating support 33, and a port coupling adjustment block 34, the port outer conductor 31 is fixedly connected to the cavity 1, the port inner conductor 32 is fixedly connected between the port outer conductor 31 and the cavity 1 through the port insulating support 33, the port coupling adjustment block 34 is movably connected between the port inner conductor 32 and the cavity 1, and the port coupling amount can be adjusted by adjusting the port coupling adjustment block 34 up and down.
Looking at fig. 2, the resonant rod assembly 4 comprises a resonant rod fixing section 41, a resonant rod moving section 42, a resonant rod adjusting rod 43, an adjusting rod fixing cover 44, a resonant rod outer flange 45 and an adjusting rod locking ring 46, wherein the resonant rod fixing section 41 and the resonant rod outer flange 45 are fixedly connected with the inner side and the outer side of the cavity 1, the adjusting rod locking ring 46 is arranged in the resonant rod outer flange 45, the resonant rod moving section 42 and the resonant rod adjusting rod 43 are fixedly connected through the adjusting rod fixing cover 44, the resonant rod moving section 42 is arranged on the resonant rod fixing section 41, the resonant rod adjusting rod 43 passes through the resonant rod fixing section 41 and the resonant rod outer flange 45 and extends to the outer side of the cavity 1, the length of the resonant rod assembly 4 in the cavity 1 is adjusted by adjusting the extension of the resonant rod adjusting rod 43 outside the cavity, therefore, the resonant frequency of the resonant cavity is changed, and the movable section is locked by adjusting the rod locking ring after the resonant frequency meets the requirement.
Looking at fig. 3, the dumbbell part 5 comprises a dumbbell 51, dumbbell connecting screws 52 and dumbbell insulating supports 53, the dumbbell insulating supports 53 are installed in corresponding windows of the cavity 1, the dumbbell 51 is installed on two sides of the dumbbell insulating supports 53, and the dumbbells 51 on two sides are fixedly connected through the dumbbell connecting screws 52.
In conclusion, through changing port, coupling ring part, resonance stick structure, change port, coupling, resonance stick into adjustable form, under the condition that does not influence electric index of wave filter and change cavity spare part, can carry out CH6 ~ 12 full channel and be adjustable, greatly reduced the required time of frequency change, manpower, material resources.
It should be noted that the above-mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the utility model. The scope of the utility model is to be determined by the appended claims.
Claims (5)
1. The VHF band-pass filter with the adjustable full channel is characterized by comprising a cavity (1), a coupling ring component (2), a port component (3), a resonance rod component (4) and a dumbbell component (5); wherein the content of the first and second substances,
the cavity (1) is a six-cavity structure and is assembled through a plate splicing structure, and windows are formed in the positions corresponding to the coupling ring and the coupling dumbbell;
the coupling ring part (2) comprises a coupling ring (21), an inner flange (22), an outer flange (23) and a locking ring (24), the inner flange and the outer flange are fixedly connected to the inner side and the outer side of the cavity respectively, the locking ring (24) is installed in the outer flange (23), and the coupling ring (21) is installed in the center holes of the inner flange and the outer flange;
the port component (3) comprises a port outer conductor (31), a port inner conductor (32), a port insulating support (33) and a port coupling adjusting block (34), the port outer conductor (31) is fixedly connected to the outer side of the cavity (1), the port inner conductor (32) is fixedly connected between the port outer conductor (31) and the cavity (1) through the port insulating support (33), and the port coupling adjusting block (34) is movably connected between the port inner conductor (32) and the cavity (1);
the resonance rod assembly (4) comprises a resonance rod fixing section (41), a resonance rod movable section (42), a resonance rod adjusting rod (43), an adjusting rod fixing cover (44), a resonance rod outer flange (45) and an adjusting rod locking ring (46), the resonance rod fixing section (41) and the resonance rod outer flange (45) are fixedly connected to the inner side and the outer side of the cavity (1), the adjusting rod locking ring (46) is installed in the resonance rod outer flange (45), the resonance rod movable section (42) and the resonance rod adjusting rod (43) are fixedly connected through the adjusting rod fixing cover (44), the resonance rod movable section (42) is installed on the resonance rod fixing section (41), and the resonance rod adjusting rod (43) penetrates through the resonance rod fixing section (41) and the resonance rod outer flange (45) and extends to the outer side of the cavity (1);
dumbbell part (5) are including dumbbell (51), dumbbell connecting screw (52), dumbbell insulating support (53), and dumbbell insulating support (53) are installed in cavity (1) and are corresponded the window, and dumbbell (51) are installed in dumbbell insulating support (53) both sides, link firmly dumbbell (51) in both sides through dumbbell connecting screw (52).
2. The VHF bandpass filter of claim 1, wherein the chamber (1) is made of aluminum alloy plates by splicing, and is divided into six single chambers, and a coupling window is opened between the single chambers.
3. The VHF bandpass filter with adjustable full channels according to claim 1, characterized in that the coupling ring part (2) comprises a coupling ring (21), an inner flange (22), an outer flange (23) and a locking ring (24), wherein the inner flange and the outer flange are respectively fixedly connected to the inner side and the outer side of the cavity, the locking ring (24) is installed in the outer flange (23), the coupling ring (21) is installed in an inner center hole and an outer center hole, the coupling degree between the cavities is adjusted by adjusting the outward extension amount of the coupling ring in the cavity (1), and the locking ring is fastened to lock after the coupling degree reaches the standard.
4. The VHF band-pass filter of full channel adjustable according to claim 1, characterized by, port part (3) includes port outer conductor (31), port inner conductor (32), port insulation support (33), port coupling regulating block (34), port outer conductor (31) links firmly in the cavity (1) outside, port inner conductor (32) links firmly between port outer conductor (31) and cavity (1) through port insulation support (33), port coupling regulating block (34) swing joint is between port inner conductor (32) and cavity (1), adjust the port coupling volume through the up-and-down slip of port coupling regulating block (34), after the coupling volume reaches standard, lock it with cavity (1) with fastening screw.
5. The VHF band-pass filter of claim 1, wherein the resonant rod assembly (4) comprises a resonant rod fixed section (41), a resonant rod movable section (42), a resonant rod adjusting rod (43), an adjusting rod fixed cover (44), a resonant rod outer flange (45) and an adjusting rod locking ring (46), the resonant rod fixed section (41) and the resonant rod outer flange (45) are fixedly connected with the inner side and the outer side of the cavity (1), the adjusting rod (46) is installed in the resonant rod outer flange (45), the resonant rod movable section (42) and the resonant rod adjusting rod (43) are fixedly connected through the adjusting rod fixed cover (44), the resonant rod movable section (42) is installed on the resonant rod fixed section (41), the resonant rod adjusting rod (43) passes through the resonant rod fixed section (41) and the resonant rod outer flange (45) to extend to the outer side of the cavity (1), and the extension of the resonant rod adjusting rod (43) outside the cavity is adjusted to adjust the resonant rod assembly (4) in the cavity 1) The length of the inner part of the resonant cavity is changed, so that the resonant frequency of the resonant cavity is changed, and the movable section is locked by adjusting the rod locking ring after the resonant frequency meets the requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085833.0U CN216750253U (en) | 2021-09-01 | 2021-09-01 | All-channel adjustable VHF band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122085833.0U CN216750253U (en) | 2021-09-01 | 2021-09-01 | All-channel adjustable VHF band-pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216750253U true CN216750253U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122085833.0U Active CN216750253U (en) | 2021-09-01 | 2021-09-01 | All-channel adjustable VHF band-pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216750253U (en) |
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2021
- 2021-09-01 CN CN202122085833.0U patent/CN216750253U/en active Active
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