CN113594652A - Dual-mode filter based on HFSS cavity and adjusting method - Google Patents
Dual-mode filter based on HFSS cavity and adjusting method Download PDFInfo
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- CN113594652A CN113594652A CN202110962538.0A CN202110962538A CN113594652A CN 113594652 A CN113594652 A CN 113594652A CN 202110962538 A CN202110962538 A CN 202110962538A CN 113594652 A CN113594652 A CN 113594652A
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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
- H01P1/207—Hollow waveguide filters
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Abstract
The invention relates to the technical field of filters, in particular to a double-mode filter based on an HFSS cavity and an adjusting method; the center department of syntonizer body is provided with the coupling hole, the middle part of syntonizer body still is provided with the mounting groove, the mounting groove is located the top in coupling hole, the mounting groove internalization is provided with rotates the piece, the one end that rotates the piece and be close to the coupling hole is provided with the regulating block, the other end that rotates the piece is provided with transmission tooth portion, be provided with a plurality of drive gear on the driving medium, every drive gear meshes with a transmission tooth portion respectively, through rotating the driving medium, because transmission tooth portion and drive gear mesh, thereby drive through transmission tooth portion and rotate the piece at the mounting groove internal rotation, thereby make the regulating block rotate, because the regulating block is irregular shape, utilize the regulating block to shield the not equidimension area in coupling hole, thereby adjust filter's parameter.
Description
Technical Field
The invention relates to the technical field of filters, in particular to a double-mode filter based on an HFSS cavity and an adjusting method.
Background
With the development of small size, light weight and high performance of communication system equipment, higher requirements are also put forward on front-end frequency selective devices. The dielectric waveguide filter is an important research direction in the current communication field, and along with the gradual determination of the 5G communication system standard, a dielectric waveguide filter with high performance, small volume and light weight becomes the best choice.
Compared with a single-mode filter, the double-mode filter based on the HFSS cavity has the advantages of small size and smaller insertion loss, but the parameters of the conventional double-mode filter cannot be adjusted according to actual requirements, and the adaptability is poor.
Disclosure of Invention
The invention aims to provide a double-mode filter based on an HFSS cavity and an adjusting method, and solves the problems that parameters of the existing double-mode filter in the prior art cannot be adjusted according to actual requirements and the adaptability is poor.
In order to achieve the above purpose, the invention provides a dual-mode filter based on an HFSS cavity, the dual-mode filter based on the HFSS cavity comprises a first metal cavity, a second metal cavity and a resonant cavity, the resonant cavity is located between the first metal cavity and the second metal cavity, a plurality of dielectric dual-mode resonators are uniformly arranged inside the resonant cavity, each dielectric dual-mode resonator comprises a resonator body and a rotating member, a coupling hole is arranged at the center of the resonator body, an installation groove is also arranged in the middle of the resonator body, the installation groove is located above the coupling hole, the rotating member is movably arranged in the installation groove, an adjusting block is arranged at one end of the rotating member close to the coupling hole, a transmission tooth part is arranged at the other end of the rotating member, the adjusting block corresponds to the coupling hole, and a transmission member is arranged inside the resonant cavity, the transmission piece sequentially penetrates through the resonator bodies, a plurality of transmission gears are arranged on the transmission piece, and each transmission gear is meshed with one transmission gear part.
Through rotating the transmission part, because the transmission tooth part is meshed with the transmission gear, the transmission tooth part drives the rotating part to rotate in the mounting groove, the adjusting block is rotated because the adjusting block is irregular, and the adjusting block is utilized to shield areas with different sizes of the coupling hole, so that the parameters of the filter are adjusted.
The transmission part further comprises a rotating shaft and a driven gear, the rotating shaft penetrates through the resonator bodies in sequence, each transmission gear is connected with the rotating shaft in a clamping mode, a notch is formed in the outer wall of each resonator, and the driven gear is fixedly connected with the rotating shaft and corresponds to the notch.
The driven gear is driven to drive the transmission gear to drive by rotating the driven gear outside the resonant cavity, the driven gear is fixedly connected with the rotating shaft, and the driven gear is manufactured by adopting an integral forming technology during manufacturing, so that the structure is firmer.
The rotating shaft comprises a shaft body, a plurality of sealing sleeves and a plurality of clamping blocks, the shaft body sequentially penetrates through the resonator bodies, the sealing sleeves are sleeved outside the joints of the shaft body and each resonator body, the clamping blocks are fixedly connected with the shaft body, each transmission gear is provided with a clamping groove, and the clamping blocks are matched with the clamping grooves.
And in the process that the shaft body sequentially penetrates through the resonator body, the transmission gear is installed on the shaft body sequentially through the clamping blocks, and the sealing sleeves are clamped into the corresponding connecting parts, so that the installation of the rotating shaft is completed.
Wherein, every rotate the piece and all still include dwang and rotor, the dwang with syntonizer body swing joint, and be located in the mounting groove, the one end of rotor is provided with transmission tooth portion, the other end of rotor is provided with the regulating block.
The dwang is located in the mounting groove, and with the mounting groove is dismantled and is connected, the rotor with dwang swing joint makes drive gear passes through drive tooth portion drives the rotor rotates.
And a first coupling window is arranged at one end of the first metal cavity close to the dielectric dual-mode resonator, and a second coupling window is arranged at one end of the second metal cavity close to the dielectric dual-mode resonator.
And the first metal cavity and the resonant cavity are connected through the first coupling window for energy coupling, and the second metal cavity and the resonant cavity are connected through the second coupling window for energy coupling.
The invention also provides an adjusting method of the double-mode filter based on the HFSS cavity, which comprises the following steps:
the driven gear is rotated to drive the rotating shaft to rotate, and further the transmission gears are driven to synchronously rotate;
the transmission gear is meshed with the transmission tooth part, so that the rotating piece is driven to rotate in the corresponding mounting groove, and the adjusting block is driven to rotate;
the adjusting block is in an irregular shape, and the adjusting block is used for shielding areas with different sizes of the coupling holes, so that the parameters of the filter are adjusted.
When the parameters of the filter are adjusted according to actual requirements, the driven gear is rotated to drive the rotating shaft to rotate, the plurality of transmission gears are driven to synchronously rotate, the transmission gears are meshed with the transmission tooth parts, so that the rotating parts are driven to rotate in the corresponding mounting grooves, the adjusting blocks are rotated, the adjusting blocks are irregular, and the adjusting blocks are used for shielding areas with different sizes of the coupling holes, so that the parameters of the filter are adjusted.
The invention relates to a double-mode filter based on an HFSS cavity and an adjusting method, wherein a coupling hole is arranged at the center of a resonator body, an installation groove is also arranged in the middle of the resonator body and is positioned above the coupling hole, a rotating piece is movably arranged in the installation groove, one end of the rotating piece, which is close to the coupling hole, is provided with an adjusting block, the other end of the rotating piece is provided with a transmission tooth part, a plurality of transmission gears are arranged on the transmission piece, each transmission gear is respectively meshed with one transmission tooth part, and by rotating the transmission piece, the transmission tooth part is meshed with the transmission gear, so that the rotating piece is driven by the transmission tooth part to rotate in the installation groove, the adjusting block is rotated, and because the adjusting block is irregular in shape, the adjusting block is utilized to shield the areas with different sizes of the coupling hole, thereby adjusting the parameters of the filter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a cross-sectional view of the internal structure of a dual-mode filter based on an HFSS cavity according to the present invention.
Fig. 2 is a sectional view showing the internal structure of the resonant cavity provided by the present invention.
Fig. 3 is an enlarged view of a portion of the structure of fig. 2 a according to the present invention.
FIG. 4 is a schematic view of the structure of the transmission member provided by the present invention.
Fig. 5 is an enlarged view of a portion of the structure of fig. 4 a according to the present invention.
Fig. 6 is a schematic structural view of a rotating member provided in the present invention.
Fig. 7 is a flow chart of the steps of an adjustment method for a dual-mode filter based on an HFSS cavity according to the present invention.
1-a first metal cavity, 11-a first coupling window, 2-a second metal cavity, 21-a second coupling window, 3-a resonant cavity, 31-a notch, 32-a shell, 33-a reduction gear, 34-a rocker, 35-a crank, 4-a medium dual-mode resonator, 41-a resonator body, 42-a rotating part, 421-a rotating rod, 422-a rotating body, 43-a coupling hole, 44-a mounting groove, 45-an adjusting block, 46-a transmission tooth part, 47-a blind groove, 48-a third coupling structure, 481-a through hole, 5-a transmission part, 51-a transmission gear, 52-a rotating shaft, 53-a driven gear, 54-a shaft body, 55-a sealing sleeve, 56-a clamping block and 57-a clamping groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 6, the present invention provides a dual-mode filter based on an HFSS cavity, where the dual-mode filter based on an HFSS cavity includes a first metal cavity 1, a second metal cavity 2, and a resonant cavity 3, the resonant cavity 3 is located between the first metal cavity 1 and the second metal cavity 2, a plurality of dielectric dual-mode resonators 4 are uniformly disposed inside the resonant cavity 3, each dielectric dual-mode resonator 4 includes a resonator body 41 and a rotating member 42, a coupling hole 43 is disposed at the center of the resonator body 41, an installation groove 44 is further disposed in the middle of the resonator body 41, the installation groove 44 is located above the coupling hole 43, the rotating member 42 is movably disposed in the installation groove 44, an adjusting block 45 is disposed at one end of the rotating member 42 close to the coupling hole 43, and a transmission tooth portion 46 is disposed at the other end of the rotating member 42, the adjusting block 45 corresponds to the coupling hole 43, a transmission member 5 is further disposed inside the resonant cavity 3, the transmission member 5 sequentially penetrates through the plurality of resonator bodies 41, a plurality of transmission gears 51 are disposed on the transmission member 5, and each transmission gear 51 is respectively engaged with one transmission tooth portion 46.
In this embodiment, by rotating the transmission member 5, since the transmission tooth portion 46 is engaged with the transmission gear 51, the rotation member 42 is driven to rotate in the mounting groove 44 by the transmission tooth portion 46, so that the adjusting block 45 is rotated, since the adjusting block 45 has an irregular shape, the adjusting block 45 is used to shield different areas of the coupling hole 43, thereby adjusting parameters of the filter.
Further, the transmission member 5 further includes a rotation shaft 52 and a driven gear 53, the rotation shaft 52 sequentially penetrates through the plurality of resonator bodies 41, each of the transmission gears 51 is connected with the rotation shaft 52 in a clamping manner, a notch 31 is formed in an outer wall of the resonator, the driven gear 53 is fixedly connected with the rotation shaft 52 and corresponds to the notch 31, the rotation shaft 52 includes a shaft body 54, a plurality of sealing sleeves 55 and a plurality of clamping blocks 56, the shaft body 54 sequentially penetrates through the plurality of resonator bodies 41, the sealing sleeves 55 are sleeved outside a joint of the shaft body 54 and each of the resonator bodies 41, the plurality of clamping blocks 56 are fixedly connected with the shaft body 54, each of the transmission gears 51 is provided with a clamping groove 57, and the clamping blocks 56 are matched with the clamping grooves 57.
In this embodiment, the driven gear 53 is rotated outside the resonant cavity 3 to drive the transmission gear 51, the driven gear 53 is fixedly connected to the rotating shaft 52, and the resonator is manufactured by using an integral molding technology, so that the structure is firmer, and in the process that the shaft body 54 sequentially penetrates through the resonator body 41, the transmission gear 51 is sequentially arranged on the shaft body 54 through the fixture block 56, and the sealing sleeve 55 is clamped into the corresponding connecting position, so that the installation of the rotating shaft 52 is completed.
Further, every it all still includes dwang 421 and rotor 422 to rotate piece 42, dwang 421 with resonator body 41 swing joint, and be located in mounting groove 44, the one end of rotor 422 is provided with drive tooth portion 46, the other end of rotor 422 is provided with regulating block 45.
In this embodiment, the rotating rod 421 is located in the mounting groove 44, and is detachably connected to the mounting groove 44, and the rotating body 422 is movably connected to the rotating rod 421, so that the transmission gear 51 drives the rotating body 422 to rotate through the transmission tooth portion 46.
Further, a first coupling window 11 is disposed at one end of the first metal cavity 1 close to the dielectric dual-mode resonator 4, and a second coupling window 21 is disposed at one end of the second metal cavity 2 close to the dielectric dual-mode resonator 4.
In this embodiment, the first metal cavity 1 and the resonant cavity 3 are connected through the first coupling window 11 and perform energy coupling, and the second metal cavity 2 and the resonant cavity 3 are connected through the second coupling window 21 and perform energy coupling.
Further, blind grooves 47 are formed at two ends of each resonator body 41, and the coupling hole 43 is located between the two blind grooves 47.
In the present embodiment, the blind slot 47 is used to push up a third resonant frequency out of two resonant frequencies generated by the corresponding dielectric dual-mode resonator 4.
Further, a third coupling structure 48 is disposed between every two adjacent dielectric dual-mode resonators 4, the third coupling structure 48 is an iris, and at least one through hole 481 is disposed on the third coupling structure 48.
In this embodiment, energy is coupled between two adjacent dielectric dual-mode resonators 4 through at least one through hole 481, and the through holes 481 with different sizes and shapes are designed according to specific requirements.
Further, a shell 32 is further arranged outside the resonant cavity 3, a reduction gear 33 is arranged inside the shell 32, the reduction gear 33 is meshed with the driven gear 53, a rocker 34 is arranged on the reduction gear 33, the rocker 34 penetrates through the shell 32, and a crank 35 is arranged at one end, far away from the reduction gear 33, of the rocker 34.
In this embodiment, the crank 35 is rotated to drive the reduction gear 33 to rotate, so as to drive the driven gear 53 to rotate slowly, and further slow down the output rotation speed of the transmission gear 51, so that the adjusting block 45 rotates more slowly, and the area of the coupling hole 43 is adjusted more accurately.
Referring to fig. 7, the present invention further provides a tuning method using the HFSS cavity-based dual-mode filter as described above, comprising the following steps:
s1: the driven gear 53 is rotated to drive the rotating shaft 52 to rotate, and further the transmission gears 51 are driven to synchronously rotate;
s2: the transmission gear 51 is meshed with the transmission gear part 46, so that the rotating piece 42 is driven to rotate in the corresponding mounting groove 44, and the adjusting block 45 is driven to rotate;
s3: the adjusting block 45 is irregular, and the adjusting block 45 is used for shielding areas with different sizes of the coupling hole 43, so that parameters of the filter are adjusted.
In this embodiment, when the parameters of the filter are adjusted according to actual requirements, the driven gear 53 is rotated to drive the rotating shaft 52 to rotate, and further drive the plurality of transmission gears 51 to rotate synchronously, and the transmission gears 51 are engaged with the transmission tooth portions 46 to drive the rotating members 42 to rotate in the corresponding mounting grooves 44, so that the adjusting blocks 45 rotate, the adjusting blocks 45 are irregular, and the adjusting blocks 45 are used to shield areas with different sizes of the coupling holes 43, so as to adjust the parameters of the filter.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A dual-mode filter based on an HFSS cavity is characterized in that,
the double-mode filter based on the HFSS cavity comprises a first metal cavity, a second metal cavity and a resonant cavity, the resonant cavity is positioned between the first metal cavity and the second metal cavity, a plurality of medium double-mode resonators are uniformly arranged in the resonant cavity, each medium double-mode resonator comprises a resonator body and a rotating part, a coupling hole is formed in the center of each resonator body, an installation groove is formed in the middle of each resonator body and positioned above the coupling hole, the rotating part is movably arranged in the installation groove, an adjusting block is arranged at one end, close to the coupling hole, of each rotating part, a transmission tooth part is arranged at the other end of each rotating part, each adjusting block corresponds to the coupling hole, a transmission part is arranged in the resonant cavity and penetrates through the resonator bodies in sequence, the transmission piece is provided with a plurality of transmission gears, and each transmission gear is meshed with one transmission gear part.
2. The HFSS cavity based dual mode filter of claim 1, wherein the first and second RF signals are coupled to the RF signal,
the transmission part further comprises a rotating shaft and a driven gear, the rotating shaft penetrates through the resonator bodies in sequence, each transmission gear is connected with the rotating shaft in a clamping mode, a notch is formed in the outer wall of each resonator, and the driven gear is fixedly connected with the rotating shaft and corresponds to the notch.
3. The HFSS cavity based dual mode filter of claim 2, wherein the first and second RF signals are coupled to the RF signal,
the rotating shaft comprises a shaft body, a plurality of sealing sleeves and a plurality of clamping blocks, the shaft body sequentially penetrates through the resonator bodies, the sealing sleeves are sleeved outside the joints of the shaft body and each resonator body, the clamping blocks are fixedly connected with the shaft body, each transmission gear is provided with a clamping groove, and the clamping blocks are matched with the clamping grooves.
4. The HFSS cavity based dual mode filter of claim 1, wherein the first and second RF signals are coupled to the RF signal,
every rotate the piece and all still include dwang and rotor, the dwang with syntonizer body swing joint, and be located in the mounting groove, the one end of rotor is provided with transmission tooth portion, the other end of rotor is provided with the regulating block.
5. The HFSS cavity based dual mode filter of claim 1, wherein the first and second RF signals are coupled to the RF signal,
and a first coupling window is arranged at one end of the first metal cavity close to the dielectric dual-mode resonator, and a second coupling window is arranged at one end of the second metal cavity close to the dielectric dual-mode resonator.
6. A tuning method using a dual mode filter based on an HFSS chamber as described in claim 5, characterized by the steps of:
the driven gear is rotated to drive the rotating shaft to rotate, and further the transmission gears are driven to synchronously rotate;
the transmission gear is meshed with the transmission tooth part, so that the rotating piece is driven to rotate in the corresponding mounting groove, and the adjusting block is driven to rotate;
the adjusting block is in an irregular shape, and the adjusting block is used for shielding areas with different sizes of the coupling holes, so that the parameters of the filter are adjusted.
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| CN202110962538.0A CN113594652B (en) | 2021-08-20 | 2021-08-20 | Dual-mode filter and adjusting method |
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| CN202110962538.0A CN113594652B (en) | 2021-08-20 | 2021-08-20 | Dual-mode filter and adjusting method |
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| ES1005398U (en) * | 1988-03-24 | 1988-11-01 | Radiacion Y Microondas, S.A. R.Y.M.S.A. | Bandpass filter in tunable wave guide. (Machine-translation by Google Translate, not legally binding) |
| US20070247262A1 (en) * | 2003-08-23 | 2007-10-25 | Kmw Inc. | Variable radio frequency band filter |
| US20180102579A1 (en) * | 2016-10-06 | 2018-04-12 | Universal Microwave Technology, Inc. | Indirect transmission type automatic frequency modulation filter |
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| CN208526064U (en) * | 2018-06-07 | 2019-02-22 | 天津市华康净化设备有限公司 | Non-inductive windings high efficiency particulate air filter |
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2021
- 2021-08-20 CN CN202110962538.0A patent/CN113594652B/en active Active
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| CN108879049A (en) * | 2018-07-10 | 2018-11-23 | 成都旭思特科技有限公司 | A kind of filter coupling process |
| CN210200923U (en) * | 2019-08-26 | 2020-03-27 | 湖北广益通讯设备有限公司 | Tuning system of filter |
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