CN117855782A - Cavity high-pass filter - Google Patents
Cavity high-pass filter Download PDFInfo
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- CN117855782A CN117855782A CN202410203511.7A CN202410203511A CN117855782A CN 117855782 A CN117855782 A CN 117855782A CN 202410203511 A CN202410203511 A CN 202410203511A CN 117855782 A CN117855782 A CN 117855782A
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- 239000004020 conductor Substances 0.000 claims abstract description 144
- 230000005540 biological transmission Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 239000004332 silver Substances 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract description 13
- 238000009434 installation Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to the technical field of microwave communication, in particular to a cavity high-pass filter, which comprises: the cavity is respectively arranged at the input end and the output end at two ends of the cavity, and at least one first conductor sheet and at least two second conductor sheets which are arranged in the cavity; the first conductor plates and the second conductor plates are arranged at intervals, and the lower surface of each first conductor plate is respectively and partially opposite to the upper surfaces of two adjacent second conductor plates, so that the first conductor plates respectively form capacitive coupling with the two adjacent second conductor plates. Each first conductor sheet and two adjacent second conductor sheets and the tuning screw are equivalent to a T-shaped high-pass network formed by connecting two capacitors in series and connecting one inductor in parallel. The embodiment of the invention can be equivalent to a T-shaped high-pass network formed by connecting two capacitors in series and connecting one inductor in parallel in the traditional scheme, so that the designed high-pass filter has the characteristics of tunability, simplicity in processing and installation and wide passband range.
Description
Technical Field
The embodiment of the invention relates to the technical field of microwave communication, in particular to a cavity high-pass filter.
Background
In the existing microwave communication system, the application of the cavity high-pass filter is wider, and the application is realized by adopting a plurality of groups of T-shaped networks formed by serially connecting capacitors and parallelly connecting inductors in the traditional scheme at present, and the defects of the cavity high-pass filter are that the processing and the installation are difficult, the structure is complex, and the tuning is inconvenient.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a cavity high-pass filter, the structure of which can be equivalent to a T-shaped high-pass network formed by connecting capacitors in series and inductors in parallel in the traditional scheme, so that the designed high-pass filter has the characteristics of tunability, simplicity in processing and installation and wide passband range.
In order to solve the technical problems, one technical scheme adopted by the embodiment of the invention is as follows: there is provided a cavity high pass filter comprising: the cavity is respectively arranged at the input end and the output end at two ends of the cavity, at least one tuning screw rod, a corresponding hexagonal nut, at least one first conductor sheet and at least two second conductor sheets, wherein the at least one first conductor sheet and the at least two second conductor sheets are arranged in the cavity;
one end of each tuning screw is connected with the cover plate of the cavity through a screw tooth and a hexagon nut, and the other end of each tuning screw is connected with the first conductor sheet;
each second conductor sheet is fixed at the lower part of the cavity through an insulating fixing piece, and the output end and the input end are respectively connected with one second conductor sheet closest to the second conductor sheet;
the first conductor plates and the second conductor plates are arranged at intervals, and the lower surface of each first conductor plate is respectively and partially opposite to the upper surfaces of two adjacent second conductor plates, so that the first conductor plates are respectively and capacitively coupled with the two adjacent second conductor plates.
Optionally, the at least two second conductor plates are arranged at intervals of a preset distance at the lower part of the cavity; the end parts of the second conductor plates are of inclined structures, so that the end parts of two adjacent second conductor plates are not parallel.
Optionally, each first conductor piece is a disc with the same size, the diameter of the disc is larger than the preset distance, the center of the disc is fixedly connected with the tuning screw, and the center of the disc is located in the middle of the preset distance.
Optionally, the second conductor sheet is a strip transmission line, the material is copper, and the surface is silver-plated; the left part of the lower surface of the disc is opposite to and parallel to the right part of the upper surface of the strip transmission line on the left side of the disc; the right portion of the lower surface of the disk is disposed opposite and in parallel to the left portion of the upper surface of the strip transmission line on the right side of the disk.
Optionally, the cavity is in a cuboid structure, and the plurality of insulating fixing pieces are sequentially arranged at intervals along the length direction of the cavity according to a preset distance; one of the strip transmission lines is provided on one of the fixing members, and an upper surface of the strip transmission line is disposed opposite to and in parallel with a lower surface portion of the first conductor piece.
Optionally, the insulation fixing piece comprises an insulation supporting piece and an insulation fixing screw; one end of the insulating support piece is fixedly arranged at the bottom of the cavity, and the second conductor is fixed on the other end of the insulating support piece through the insulating fixing screw.
Optionally, the insulating support piece is cylindrical, and is made of polytetrafluoroethylene material, and the insulating fixing screw is made of PE material.
Optionally, the cavity includes a cover plate and a receiving cavity, and the shape of the receiving cavity is consistent with the shape formed by the at least one first conductor piece and the at least two second conductor pieces.
Optionally, the cavity is made of aluminum metal material, and silver is plated on the surface of the cavity.
Optionally, the output end and the input end are both radio frequency coaxial connectors, and the inner conductors of the radio frequency coaxial connectors are respectively connected with one second conductor piece closest to the input end through soldering tin.
First, in the embodiment of the invention, the first conductor plates and the second conductor plates are arranged at intervals, and the lower surface of each first conductor plate is respectively and partially opposite to the upper surfaces of two adjacent second conductor plates, so that the first conductor plates respectively form capacitive coupling with the two adjacent second conductor plates. Each first conductor sheet and two adjacent second conductor sheets and the tuning screw are equivalent to a T-shaped high-pass network formed by connecting two capacitors in series and connecting one inductor in parallel. The embodiment can be equivalent to a T-shaped high-pass network formed by connecting two capacitors in series and connecting one inductor in parallel in the traditional scheme, so that the designed high-pass filter has the characteristics of tunability, simplicity in processing and installation and wide passband range.
And secondly, the tuning screw and the first conductor plates are integrally processed and molded, and the distance between the first conductor plates and two adjacent second conductor plates can be controlled by rotating the tuning screw, so that the size of a formed capacitor is changed, and the working frequency of the cavity high-pass filter in the embodiment is changed.
Furthermore, the first conductor plates are all metal discs with the same size, so that the processing is convenient, and the tuning of the cavity high-pass filter in the embodiment is convenient; wherein, the first conductor sheet is provided in a disc shape to prevent the relative area of the first conductor and the second conductor from being changed in the process of rotating the adjusting screw. And, because tuning screw passes through threaded connection with the cavity apron, the trend must take place to rotate at the installation, and the relative area with the second conductor piece is unchangeable after the installation is accomplished can be ensured to the first conductor of disc, avoids secondary adjustment.
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. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 shows a three-dimensional block diagram of a 3.4-10.2G cavity high pass filter in one embodiment of the invention
FIG. 2 shows an internal block diagram of a 3.4-10.2G cavity high pass filter in one embodiment of the invention;
figure 3 shows a graph of simulation results of a 3.4-10.2G cavity high pass filter in one embodiment of the invention.
1. A cavity; 11. a cover plate; 12. a receiving chamber; 2. a first conductor piece; 3. a second conductor piece; 4. a hexagonal nut; 5. a tuning screw; 6. an insulating fixing member; 61. an insulating fixing screw; 62. an insulating support; 7. an input end; 8. and an output terminal.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is two or more unless specifically defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Example 1
In an embodiment of the present invention, a cavity high-pass filter includes: the cavity is respectively arranged at the input end and the output end at two ends of the cavity, at least one tuning screw rod, a corresponding hexagonal nut, at least one first conductor sheet and at least two second conductor sheets, wherein the at least one first conductor sheet and the at least two second conductor sheets are arranged in the cavity;
one end of each tuning screw is connected with the cover plate of the cavity through a screw tooth and a hexagon nut, and the other end of each tuning screw is connected with the first conductor sheet;
each second conductor sheet is fixed at the lower part of the cavity through an insulating fixing piece, and the output end and the input end are respectively connected with one second conductor sheet closest to the second conductor sheet;
the first conductor plates and the second conductor plates are arranged at intervals, and the lower surface of each first conductor plate is respectively and partially opposite to the upper surfaces of two adjacent second conductor plates, so that the first conductor plates are respectively and capacitively coupled with the two adjacent second conductor plates.
In this embodiment, the cavity is in a cuboid structure, and is composed of a cover plate and a containing cavity, the input end and the output end are both made of SMA radio frequency coaxial connectors, and the SMA radio frequency coaxial connectors are respectively arranged at the left end and the right end of the containing cavity, wherein the input end and the output end can be used reciprocally. Each second conductor piece is fixed at the bottom of the containing cavity through an insulating fixing piece, is arranged along the length direction of the containing cavity, one second conductor piece at the leftmost end in the containing cavity is connected with an inner conductor in the input end through soldering tin, and the other second conductor piece at the rightmost end in the containing cavity is also connected with the inner conductor in the output end through soldering tin.
In this embodiment, tuning screw and first conductor piece adopt the integration processing, all use copper metal to make and surface silvering, the screw hole that sets up in the tuning screw passed the apron, be located the one end and the hexagonal nut that hold the chamber outside and be connected, rotate adjusting screw can make first conductor piece reciprocate to fixed through the hexagonal nut, first conductor piece and second conductor piece interval set up, and the lower surface of first conductor piece sets up with the upper surface of two adjacent second conductor pieces relatively, make first conductor piece form capacitive coupling with two adjacent second conductor pieces respectively. The tuning screw rod is rotated to move up and down in the threaded hole, so that the relative distance between the first conductor sheet and two adjacent second conductor sheets is changed, and the size of a capacitor in a circuit is changed, and the working frequency of the cavity high-pass filter in the embodiment is changed.
In addition, in the embodiment, two series capacitive couplings are formed by a first conductor sheet and two adjacent second conductor sheets, a parallel inductor is formed by a tuning screw arranged in the cavity, a T-shaped high-pass network formed by serially connecting capacitors and parallelly connecting inductors is formed on the secondary side, and the T-shaped high-pass network formed by serially connecting capacitors and parallelly connecting inductors in the traditional cavity high-pass filter is equivalent, so that the designed high-pass filter has the characteristics of being tunable, easy to process and install and wide in passband range.
Example two
As shown in fig. 1 and 2, in the embodiment of the present invention, taking a 3.4-10.2G cavity high pass filter as an example, the 3.4-10.2G cavity high pass filter includes: the device comprises a cavity 1, an input end 7 and an output end 8 which are respectively arranged at two ends of the cavity 1, five tuning screws 5, five corresponding hexagonal nuts 4, five first conductor plates 2 and six second conductor plates 3 which are arranged in the cavity 1; the installation process of each component is the same as that of the first embodiment, and is not repeated here.
It should be noted that, in the five tuning screws 5, the diameters of the two tuning screws 5 near the input end and the output end are smaller than the diameters of the three adjusting screws 5 in the middle, so that the inductances between the five groups of T-shaped high-pass networks formed by the five first conductor plates 2, the six adjacent second conductor plates 3 and the five tuning screws 5 in the embodiment are different, wherein the diameters of the tuning screws 5 are determined according to specific design indexes and reference standard screw specifications, and the initial lengths of the tuning screws 5 are consistent and are larger than the sum of the thickness of the cover plate 11 and the distance between the cover plate 11 and the second conductor plates 3; the second conductor pieces 3 located at both ends of the cavity 1 are longer in shape than the other second conductor pieces 3 because of the need to connect with the input end 7 and the output end 8, but the opposite area to the first conductor piece 2 is the same as the other second conductor pieces 3.
In this embodiment, six second conductor pieces 3 are disposed at intervals of a preset distance at the lower portion of the cavity 1; the preset distance needs to ensure that no influence such as crosstalk, cross capacitance, etc. is generated between two adjacent second conductor plates 3. Further, the ends of the second conductor pieces 3 are inclined structures, so that the ends of two adjacent second conductor pieces 3 are not parallel to each other, and capacitive coupling between the two adjacent second conductor pieces 3 is avoided.
Further, in this embodiment, each of the first conductor plates 2 is a disc with the same size and thickness, the diameter of the disc is larger than the preset distance, the center of the disc is fixedly connected with the tuning screw 5, and the center of the disc is located in the middle of the preset distance.
The first conductor plates 2 are all metal discs with the same size, so that the relative area of each metal disc and the second conductor is the same, and tuning of the cavity high-pass filter in the embodiment is facilitated; the center of the metal disc is located in the middle of the preset distance, and the diameter of the metal disc is larger than the preset distance, so that the metal disc can be enabled to form capacitive coupling with two adjacent strip-shaped copper transmission lines. Wherein the first conductor piece 2 is provided in a disc shape to prevent the relative area of the first conductor piece 2 and the second conductor piece 3 from being changed during rotation of the adjusting screw 5. And, in the process of rotating tuning screw 5 and fixing adjusting screw 4 through hexagonal nut 4, because tuning screw 5 passes through threaded connection with cavity 1, must take place to rotate at the installation time trend, the relative area of disc-shaped first conductor piece 2 with second conductor piece 3 after the installation process is accomplished can be ensured unchanged, avoid secondary adjustment.
In one embodiment of the invention, the second conductor sheet 3 is configured as a 50 Ω impedance strip transmission line, made of copper metal, surface-plated with silver, and the left side portion of the lower surface of the disc is disposed opposite and parallel to the right side portion of the upper surface of the strip transmission line on the left side of the disc; the right part of the lower surface of the disc is opposite to and parallel to the left part of the upper surface of the strip transmission line on the right side of the disc;
the parallel arrangement maximizes the relative area between the second conductor plate 3 and the first conductor plate 2, thereby increasing the capacitance value size range and thus the passband tuning range of the cavity high pass filter in this embodiment.
In summary, compared with the traditional cavity high-pass filter, the cavity high-pass filter in the embodiment has the characteristics of being tunable, easy to process and install and wide in passband range, and the T-shaped network is formed by serially connecting capacitors and parallelly connecting inductors. The 3.4-10.2G cavity high-pass filter in this embodiment is equivalent to five groups of T-shaped high-pass networks formed by ten capacitors connected in series and five inductors connected in parallel in a traditional cavity high-pass filter, wherein the five groups of T-shaped high-pass networks are formed by five first conductor plates 2, six adjacent second conductor plates 3 and five tuning screws 5.
In this embodiment, the 3.4-10.2G cavity high pass filter design requirements are: the passband range is 3.4-10.2G, the passband insertion loss is less than or equal to 1.0dB, the out-of-band rejection is more than or equal to 60dB@DC-2.8G, and the return loss is more than or equal to 16dB. In the computer simulation, it is assumed that the input end 7 corresponds to an S parameter 1 port, the output end 8 corresponds to an S parameter 2 port, and the simulation result shows that the passband insertion loss is less than 0.2dB, the out-of-band rejection is more than 60dB@DC-2.8G, and the return loss is more than 16dB, wherein S (1, 1) and S (2, 2) are overlapped in the figure. As can be seen from fig. 3, the passband range, passband insertion loss, out-of-band rejection and return loss of the filter meet the requirements, and the circuit formed by the above structure has simpler structure and reduces the size and complexity of the circuit, so that the volume of the cavity high-pass filter in the embodiment is reduced, and in addition, the size of the capacitor in the circuit can be directly adjusted by the tuning screw 5, thereby being convenient for tuning the working frequency of the cavity high-pass filter.
In one embodiment of the present invention, the cavity 1 is in a cuboid structure, and the plurality of insulating fixing members 6 are sequentially arranged at intervals along the length direction of the cavity 1; one of the strip transmission lines is provided on one insulating holder 6, and an upper surface of the strip transmission line is disposed opposite and in parallel to a lower surface portion of the first conductor piece 2.
The preset distance refers to a distance between two adjacent middle parts of the second conductors, the insulating fixing piece 6 is fixedly connected with the middle parts of the second conductor plates 3, and one insulating fixing piece 6 is fixedly connected with the second conductor plates 3.
In one embodiment of the present invention, the insulating fixing member 6 includes an insulating supporting member 62, an insulating fixing screw 61; one end of the insulating support 62 is fixedly mounted at the bottom of the cavity 1, and the second conductor piece 3 is fixed on the other end of the insulating support 62 by the insulating fixing screw 61.
Wherein, the insulating support 62 is cylindrical and made of polytetrafluoroethylene material, and the insulating fixing screw 61 is made of PE material. The use of insulating material to secure the strip transmission line effectively blocks different parts of the circuit, which helps to maintain the stability of the circuit. Furthermore, the use of insulating materials may provide electrical isolation, preventing direct electrical communication between the different components.
In one embodiment of the present invention, the cavity 1 includes a cover plate 11 and a receiving cavity 12, and the shape of the receiving cavity 12 is consistent with the shape formed by the at least one first conductor piece 2 and the at least two second conductor pieces 3.
Wherein, the cavity 1 is made of aluminum metal material, and the aluminum has good electromagnetic shielding performance and low price, so the manufacturing cost of the cavity high-pass filter in the embodiment can be reduced. At the same time, the density of aluminum is relatively low, so that the aluminum can be used as a carrier to keep the weight of the whole device light.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. A cavity high pass filter, the cavity high pass filter comprising: the cavity is respectively arranged at the input end and the output end at two ends of the cavity, at least one tuning screw rod, a corresponding hexagonal nut, at least one first conductor sheet and at least two second conductor sheets, wherein the at least one first conductor sheet and the at least two second conductor sheets are arranged in the cavity;
one end of each tuning screw is connected with the cover plate of the cavity through a screw tooth and a hexagon nut, and the other end of each tuning screw is connected with the first conductor sheet;
each second conductor sheet is fixed at the lower part of the cavity through an insulating fixing piece, and the output end and the input end are respectively connected with one second conductor sheet closest to the second conductor sheet;
the first conductor plates and the second conductor plates are arranged at intervals, and the lower surface of each first conductor plate is respectively and partially opposite to the upper surfaces of two adjacent second conductor plates, so that the first conductor plates are respectively and capacitively coupled with the two adjacent second conductor plates.
2. The cavity high pass filter according to claim 1, wherein said at least two second conductor pieces are disposed at a predetermined distance interval in a lower portion of said cavity; the end parts of the second conductor plates are of inclined structures, so that the end parts of two adjacent second conductor plates are not parallel.
3. The cavity high pass filter according to claim 1, wherein each of said first conductor plates is a circular plate with the same size, the diameter of said circular plate is larger than said preset distance, the center of said circular plate is fixedly connected with said tuning screw, and the center of said circular plate is located in the middle of said preset distance.
4. The cavity high pass filter according to claim 1, wherein said second conductor piece is a strip transmission line, and is made of copper and silver-plated on the surface;
the left part of the lower surface of the disc is opposite to and parallel to the right part of the upper surface of the strip transmission line on the left side of the disc; the right portion of the lower surface of the disk is disposed opposite and in parallel to the left portion of the upper surface of the strip transmission line on the right side of the disk.
5. The cavity high-pass filter according to claim 1, wherein the cavity is of a cuboid structure, and the plurality of insulating fixing pieces are sequentially arranged at intervals of a preset distance along the length direction of the cavity; one of the strip transmission lines is disposed on one of the insulating fixtures, and an upper surface of the strip transmission line is disposed opposite and in parallel to a lower surface portion of the first conductor piece.
6. The cavity high pass filter according to claim 1, wherein said dielectric mount comprises a dielectric support, a dielectric mount screw; one end of the insulating support piece is fixedly arranged at the bottom of the cavity, and the second conductor piece is fixed on the other end of the insulating support piece through the insulating fixing screw.
7. The cavity high pass filter according to claim 6, wherein said insulating support is cylindrical and is made of polytetrafluoroethylene material, and said insulating set screw is made of PE material.
8. The cavity high pass filter of claim 1, wherein said cavity comprises a cover plate and a receiving cavity, said receiving cavity having a shape conforming to a shape formed by said at least one first conductor piece and said at least two second conductor pieces.
9. A cavity high pass filter according to claim 1, wherein said cavity is made of aluminum metal material and is surface plated with silver.
10. The cavity high pass filter according to claim 1, wherein said output and input are rf coaxial connectors, and wherein said inner conductors are respectively connected to said second conductor piece nearest to said output and input by solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410203511.7A CN117855782A (en) | 2024-02-23 | 2024-02-23 | Cavity high-pass filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410203511.7A CN117855782A (en) | 2024-02-23 | 2024-02-23 | Cavity high-pass filter |
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| CN102820505A (en) * | 2012-09-11 | 2012-12-12 | 成都赛纳赛德科技有限公司 | Miniaturization narrow-band filter |
| CN203300776U (en) * | 2013-05-06 | 2013-11-20 | 京信通信技术(广州)有限公司 | Communication cavity device and low-pass filtering path |
| CN204315701U (en) * | 2014-08-21 | 2015-05-06 | 摩比天线技术（深圳）有限公司 | Cavity resonator structure and cavity body filter thereof |
| CN105977587A (en) * | 2016-07-07 | 2016-09-28 | 电子科技大学 | Microwave adjustable cavity filter |
| CN113594651A (en) * | 2021-07-06 | 2021-11-02 | 大富科技(安徽)股份有限公司 | Capacitive coupling structure of cavity filter and communication equipment |
| CN214589187U (en) * | 2021-05-11 | 2021-11-02 | 华沣通信科技有限公司 | Adjustable coupling capacitor structure and cavity filter |
-
2024
- 2024-02-23 CN CN202410203511.7A patent/CN117855782A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820505A (en) * | 2012-09-11 | 2012-12-12 | 成都赛纳赛德科技有限公司 | Miniaturization narrow-band filter |
| CN203300776U (en) * | 2013-05-06 | 2013-11-20 | 京信通信技术(广州)有限公司 | Communication cavity device and low-pass filtering path |
| CN204315701U (en) * | 2014-08-21 | 2015-05-06 | 摩比天线技术（深圳）有限公司 | Cavity resonator structure and cavity body filter thereof |
| CN105977587A (en) * | 2016-07-07 | 2016-09-28 | 电子科技大学 | Microwave adjustable cavity filter |
| CN214589187U (en) * | 2021-05-11 | 2021-11-02 | 华沣通信科技有限公司 | Adjustable coupling capacitor structure and cavity filter |
| CN113594651A (en) * | 2021-07-06 | 2021-11-02 | 大富科技(安徽)股份有限公司 | Capacitive coupling structure of cavity filter and communication equipment |
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