CN115411477B - Filter - Google Patents
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- Publication number
- CN115411477B CN115411477B CN202211153055.7A CN202211153055A CN115411477B CN 115411477 B CN115411477 B CN 115411477B CN 202211153055 A CN202211153055 A CN 202211153055A CN 115411477 B CN115411477 B CN 115411477B
- Authority
- CN
- China
- Prior art keywords
- connector
- cavity
- metal rod
- rod body
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002184 metal Substances 0.000 claims abstract description 55
- 230000013011 mating Effects 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Classifications
-
- 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
- H01P1/212—Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
-
- 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
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention belongs to the technical field of communication, and discloses a filter, which comprises a cavity, a cover plate, a filter element, a connector, a tap piece and a metal rod body, wherein the cover plate is covered on the cavity; a connector is connected to the cover plate and/or the cavity, a first end of the connector is positioned in the cavity, and a second end of the connector extends out of the cavity through the cover plate; the tap piece is arranged in the cavity, one end of the tap piece is connected with the first end of the connector, and the other end of the tap piece is connected with the filter element; the metal rod body is arranged in the cavity and is coaxially connected with the first end of the connector. The arrangement of the metal rod body can improve the far-end inhibition effect of the filter on the premise of not increasing the volume of the filter, thereby improving the product performance.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a filter.
Background
A filter is a frequency selective device that passes certain frequency components in a signal while greatly attenuating or suppressing other frequency components. With this frequency-selective action of the filter, interference noise can be filtered out or spectral analysis can be performed.
At present, the conventional filter ensures the far-end inhibition effect of the filter by enlarging the size of the lengthened low pass, but the whole size of the filter is limited due to the limitation of the installation space of the filter, and the far-end inhibition cannot be improved by enlarging the size of the lengthened low pass, so that the product performance cannot be improved.
Therefore, a filter is needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a filter which is used for solving the technical problem that the product performance cannot be improved by increasing the size of a lengthened low pass to improve the far-end inhibition in the prior art.
To achieve the purpose, the invention adopts the following technical scheme:
a filter comprising a cavity and a cover plate covering the cavity, the filter further comprising:
the filter element is arranged in the cavity;
a connector connected to the cover plate and/or the cavity, wherein a first end of the connector is positioned in the cavity, and a second end of the connector extends out of the cavity through the cover plate;
the tap piece is arranged in the cavity, one end of the tap piece is connected with the first end of the connector, and the other end of the tap piece is connected with the filter element;
the metal rod body is arranged in the cavity and is coaxially connected with the first end of the connector.
As a preferable technical scheme of the filter, the metal rod body is a cylindrical rod.
As a preferable technical scheme of the filter, an insulating sleeve is sleeved outside one end, which is away from the first end, of the metal rod body.
As a preferable technical scheme of the filter, the insulating sleeve is a heat-shrinkable sleeve or an injection-molded sleeve.
As a preferable technical scheme of the filter, one end of the insulating sleeve is provided with an opening, and the other end is provided with a closed end.
As a preferable embodiment of the above filter, the filter element includes:
a low pass having one end connected to an end of the tap plate facing away from the connector;
and the resonator is connected with the other end of the low pass.
As a preferable embodiment of the above filter, the low pass path extends along an L-shape.
As a preferable technical scheme of the filter, a connecting hole is formed at an end portion of one end of the metal rod body, and the first end of the connector is inserted into the connecting hole in a matching manner.
As a preferred technical scheme of the filter, at least one through groove extending to the outer side wall of the metal rod body is formed in the inner wall of the connecting hole, and one end of the through groove extends to the end face of the metal rod body, facing the connector.
As a preferable technical solution of the above filter, in the axial direction of the metal rod body, the depth of the connection hole is greater than the length of the through groove.
The invention has the beneficial effects that:
the invention provides a filter, wherein a filter element is arranged in a cavity to play a role of filtering, one end of a tap piece is connected with a first end of a connector, the other end of the tap piece is connected with the filter element, and a metal rod body is arranged in the cavity and is coaxially connected with the first end of the connector. The arrangement of the metal rod body can improve the far-end inhibition effect of the filter on the premise of not increasing the volume of the filter, thereby improving the product performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic structural diagram of a filter according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a structure of a filter with a cover plate removed according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an exploded structure of a filter according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an exploded structure of a filter according to an embodiment of the present invention;
FIG. 5 is a schematic view of a connector, tap, metal rod and insulating sleeve according to an embodiment of the present invention;
FIG. 6 is an exploded view of the structure of FIG. 5;
fig. 7 is a schematic structural diagram of a metal rod body and an insulating sleeve according to an embodiment of the present invention.
In the figure:
1. a cavity; 2. a cover plate; 3. a filter element; 4. a connector; 5. a tap piece; 6. a metal rod body; 7. an insulating sleeve; 8. a fastener;
11. a receiving chamber; 12. a connector accommodation groove; 13. a resonator mounting groove; 14. a low-pass accommodating groove; 15. a tap sheet accommodating groove; 21. a connector fixing portion; 31. a low pass; 32. a resonator; 33. a connecting rod; 51. a fixing hole; 61. a connection hole; 62. a through groove; 63. and (5) introducing an inclined plane.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "mounted" are to be construed broadly, and may be, for example, mounted, connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or may be in communication with one another or in an interaction relationship between 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 the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 7, the present embodiment provides a filter, which includes a cavity 1, a cover plate 2 covering the cavity 1, a filter element 3, a connector 4, a tap 5, and a metal rod 6, wherein the filter element 3 is disposed in the cavity 1; the connector 4 is connected to the cover plate 2 and/or the cavity 1, two ends of the connector 4 are a first end and a second end respectively, the first end of the connector 4 is positioned in the cavity 1, and the second end of the connector 4 extends out of the cavity through the cover plate 2; the tap 5 is arranged in the cavity 1, one end of the tap 5 is connected with the first end of the connector 4, and the other end is connected with the filter element 3; the metal rod body 6 is disposed in the cavity 1, and the metal rod body 6 is coaxially connected to the first end of the connector 4.
In the filter provided in this embodiment, the filter element 3 is disposed in the cavity 1 to play a role in filtering, one end of the tap 5 is connected to the first end of the connector 4, the other end is connected to the filter element 3, and the metal rod body 6 is disposed in the cavity 1 and is coaxially connected to the first end of the connector 4. The arrangement of the metal rod body 6 can improve the far-end inhibition effect of the filter on the premise of not increasing the volume of the filter, thereby improving the product performance.
Specifically, as shown in fig. 1, the cover plate 2 is attached to the cavity 1 by a fastener 8 such as a bolt or a screw. In this embodiment, the cover plate 2 has a square structure, and four corners of the cover plate 2 are locked to the cavity 1 by fasteners 8 such as a bolt or a screw, so as to firmly connect the two.
As shown in fig. 2 and 3, the cavity 1 is provided with a receiving cavity 11, a connector mounting portion is provided in the receiving cavity 11, a connector receiving groove 12 is provided at the top end of the connector mounting portion, a first end of the connector 4 is provided in the connector receiving groove 12, and the metal rod body 6 is accommodated in the connector receiving groove 12, that is, the metal rod body 6 occupies the original space in the cavity 1, without increasing the size of the cavity 1. In order to avoid that the metal rod body 6 contacts the inner wall of the connector accommodating groove 12 to influence signal transmission, the side wall and the bottom end wall of the metal rod body 6 are spaced from the inner wall of the connector accommodating groove 12.
Specifically, the connector 4 is a solid of revolution, and correspondingly, the connector receiving groove 12 is a circular groove, for which purpose, in the present embodiment, the metal rod body 6 is provided as a cylindrical rod.
Alternatively, the larger the shaft diameter and shaft length of the metal rod body 6, the better the distal end suppressing effect. The diameter and length of the cylindrical rod can be changed as required to achieve a suitable effect. In the present embodiment, the shaft diameter and the shaft length of the cylindrical rod are not particularly limited.
Preferably, in order to ensure that a sufficiently long metal rod body 6 can be accommodated, the bottom surface of the connector accommodating groove 12 and the bottom surface of the accommodating chamber 11 are located in the same plane, and the depth of the connector accommodating groove 12 is maximized as much as possible.
Specifically, the metal rod 6 penetrates into the connector accommodating groove 12, so that skew easily occurs, and the bottom end of the metal rod 6 contacts the inner sidewall of the connector accommodating groove 12. For this purpose, in the present embodiment, the end of the metal rod body 6 facing away from the connector 4 is sheathed with an insulating sleeve 7. The insulating sleeve 7 plays an insulating role on the metal rod body 6 and the wall surface of the cavity 1, so that the normal inhibition effect of the metal rod body 6 is ensured.
Alternatively, the insulating sleeve 7 may be a heat-shrinkable sleeve, and is a sleeve-like structure that is formed by heat shrinkage to cover the bottom end of the metal rod body 6.
Alternatively, the insulating sleeve 7 may be an injection-molded sleeve, and is a sleeve-like structure that is formed by injection molding to cover the bottom end of the metal rod body 6.
Alternatively, in other embodiments, the insulating sleeve 7 may have openings at both ends.
Specifically, in the present embodiment, one end of the insulating sleeve 7 has an opening, and the other end is a closed end. The bottom of the metal rod body 6 penetrates into the insulating sleeve 7 through the opening, the closed end is coated on the bottom end face of the metal rod body 6, and the bottom of the metal rod body 6 is further prevented from being directly contacted with the bottom of the connector accommodating groove 12, so that the normal inhibition effect of the metal rod body 6 is further ensured.
Alternatively, PFA (soluble polytetrafluoroethylene) or PTFE (polytetrafluoroethylene) or the like is used as the material of the insulating sheath 7.
More specifically, the cover plate 2 is provided with a connector fixing portion 21 at a position facing the connector accommodating groove 12, the connector fixing portion 21 is convexly arranged in a direction away from the cavity 1, and the second end of the connector 4 is penetrated through the connector fixing portion 21. The connector mounting portion in the cavity 1 and the connector fixing portion 21 on the cover plate 2 together realize mounting and fixing of the connector 4.
Specifically, the filter element 3 comprises a low pass 31 and a resonator 32, one end of the low pass 31 being connected to the end of the tap 5 facing away from the connector 4; the resonator 32 is connected to the other end of the low pass 31. As shown in fig. 4, the low pass 31 is connected to the resonator 32 by a connecting rod 33. Specifically, one end of the resonator 32 is located in the cavity 1 and connected to the connecting rod 33, and the other end passes out of the cover plate 2.
More specifically, as shown in fig. 2 and 3, a resonator mounting section is further provided in the housing chamber 11, a resonator mounting groove 13 is provided at the top end of the resonator mounting section, and one end of the resonator 32 located in the chamber 1 is provided to pass through the resonator mounting groove 13.
Further specifically, with continued reference to fig. 2 and 3, a low-pass installation portion is further provided in the accommodating chamber 11, and a low-pass accommodating groove 14 is provided at a top end of the low-pass installation portion, and a low-pass 31 is accommodated in the low-pass accommodating groove 14.
Specifically, the low pass 31 extends along the L-shape. By this arrangement, the low pass 31 with a longer length is arranged in a limited space, thereby playing a better role in distal inhibition. Correspondingly, the low-pass installation part is in an L-shaped structure, and the low-pass accommodating groove 14 at the top end of the low-pass installation part extends along the L shape.
As shown in fig. 3, a tap piece mounting portion is connected between the low-pass mounting portion and the connector mounting portion, a tap piece accommodating groove 15 is formed in the top end of the tap piece mounting portion, the tap piece 5 is accommodated in the tap piece accommodating groove 15, and two ends of the tap piece accommodating groove 15 are respectively communicated with the connector accommodating groove 12 and the low-pass accommodating groove 14.
Specifically, as shown in fig. 5 to 7, a connecting hole 61 is formed at an end portion of the metal rod body 6, and the first end of the connector 4 is inserted into the connecting hole 61 in a matching manner. The connection of the metal rod body 6 and the connector 4 is realized by plugging.
As shown in fig. 6 and 7, one end of the tap 5 is provided with a fixing hole 51, and the first end of the connector 4 is matched and inserted into the fixing hole 51, so as to realize connection between the tap 5 and the connector 4. The first end of the connector 4 passes through the fixing hole 51 and then passes into the connection hole 61.
Specifically, with continued reference to fig. 6 and 7, the inner wall of the connecting hole 61 is provided with at least one through groove 62 extending to the outer side wall of the metal rod body 6, and one end of the through groove 62 extends to an end face of the metal rod body 6 facing the connector 4. The arrangement of the through groove 62 enables the solid portion at the periphery of the connecting hole 61 to elastically deform in the radial direction of the metal rod body 6 so as to elastically clamp the first end of the connector 4, thereby improving the connection reliability of the metal rod body 6 and the connector 4. In the present embodiment, two through grooves 62 are provided, and the two through grooves 62 are provided opposite to each other.
More specifically, the depth of the connection hole 61 is greater than the length of the through groove 62 in the axial direction of the metal rod body 6. By the arrangement, the connection firmness of the metal rod body 6 and the connector 4 is further improved.
Further specifically, an introduction slope 63 is provided at the orifice of the connection hole 61. The guiding function is provided by the guiding inclined surface 63 to the insertion of the first end of the connector 4, so that the insertion of the connector 4 and the metal rod body 6 is more convenient.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. The utility model provides a wave filter, includes cavity (1) and lid are located apron (2) of cavity (1), its characterized in that, wave filter still includes:
a filter element (3) arranged in the cavity (1);
a connector (4) connected to the cover plate (2) and/or the cavity (1), wherein a first end of the connector (4) is positioned in the cavity (1), and a second end of the connector (4) extends out of the cavity through the cover plate (2);
the tap piece (5) is arranged in the cavity (1), one end of the tap piece (5) is connected with the first end of the connector (4), and the other end of the tap piece is connected with the filter element (3);
the metal rod body (6) is arranged in the cavity (1), and the metal rod body (6) is coaxially connected with the first end of the connector (4);
an insulating sleeve (7) is sleeved outside one end, which is away from the first end, of the metal rod body (6);
one end of the insulating sleeve (7) is provided with an opening, and the other end is a closed end.
2. The filter according to claim 1, characterized in that the metal rod body (6) is a cylindrical rod.
3. The filter according to claim 1, characterized in that the insulating sleeve (7) is a heat shrink or an injection-molded sleeve.
4. The filter according to claim 1, characterized in that the filter element (3) comprises:
-a low-pass element (31) with one end connected to the end of the tap blade (5) facing away from the connector (4);
and a resonator (32) connected to the other end of the low-pass element (31).
5. The filter according to claim 4, characterized in that the low-pass element (31) extends along an L-shape.
6. The filter according to any one of claims 1-5, wherein a connecting hole (61) is provided at an end portion of the metal rod body (6), and the first end of the connector (4) is inserted into the connecting hole (61) in a mating manner.
7. The filter according to claim 6, characterized in that the inner wall of the connecting hole (61) is provided with at least one through groove (62) extending to the outer side wall of the metal rod body (6), and one end of the through groove (62) extends to the end face of the metal rod body (6) facing the connector (4).
8. The filter according to claim 7, characterized in that the depth of the connecting hole (61) is greater than the length of the through slot (62) in the axial direction of the metal rod body (6).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153055.7A CN115411477B (en) | 2022-09-21 | 2022-09-21 | Filter |
| TW112135516A TW202414894A (en) | 2022-09-21 | 2023-09-18 | Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211153055.7A CN115411477B (en) | 2022-09-21 | 2022-09-21 | Filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115411477A CN115411477A (en) | 2022-11-29 |
| CN115411477B true CN115411477B (en) | 2023-10-31 |
Family
ID=84166505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211153055.7A Active CN115411477B (en) | 2022-09-21 | 2022-09-21 | Filter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115411477B (en) |
| TW (1) | TW202414894A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4326170A (en) * | 1980-06-09 | 1982-04-20 | Siemens Corporation | High power and/or high voltage switching operational amplifier |
| CN106785269A (en) * | 2017-01-22 | 2017-05-31 | 深圳市国人射频通信有限公司 | One kind is electrically coupled port organization and cavity body filter |
| CN107123843A (en) * | 2017-06-20 | 2017-09-01 | 深圳市国人射频通信有限公司 | A kind of wave filter |
| CN110224209A (en) * | 2019-03-28 | 2019-09-10 | 广东通宇通讯股份有限公司 | A kind of two-way fabrication formula filter |
| CN110783674A (en) * | 2019-12-03 | 2020-02-11 | 迈特通信设备（苏州）有限公司 | Broadband small-size filter port tapping structure |
| CN210074121U (en) * | 2019-07-31 | 2020-02-14 | 昆山立讯射频科技有限公司 | Double-sided cavity tap connecting structure |
| CN210926257U (en) * | 2019-12-13 | 2020-07-03 | 武汉凡谷电子技术股份有限公司 | Full-through-hole millimeter wave filter |
| CN112599943A (en) * | 2020-11-16 | 2021-04-02 | 武汉凡谷电子技术股份有限公司 | Novel stamping and rolling low pass and processing technology thereof |
| CN214957292U (en) * | 2021-07-09 | 2021-11-30 | 昆山立讯射频科技有限公司 | Radio frequency cavity filter |
| CN214957290U (en) * | 2021-07-12 | 2021-11-30 | 昆山立讯射频科技有限公司 | Cavity filter |
| CN113809494A (en) * | 2020-06-17 | 2021-12-17 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| CN215771478U (en) * | 2021-07-14 | 2022-02-08 | 大富科技(安徽)股份有限公司 | Tap connecting sheet and cavity filter |
| CN216793962U (en) * | 2021-12-06 | 2022-06-21 | 大富科技(安徽)股份有限公司 | Filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112019011001B1 (en) * | 2016-11-29 | 2024-01-30 | Huawei Technologies Co., Ltd | FILTER AND COMMUNICATIONS DEVICE |
-
2022
- 2022-09-21 CN CN202211153055.7A patent/CN115411477B/en active Active
-
2023
- 2023-09-18 TW TW112135516A patent/TW202414894A/en unknown
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4326170A (en) * | 1980-06-09 | 1982-04-20 | Siemens Corporation | High power and/or high voltage switching operational amplifier |
| CN106785269A (en) * | 2017-01-22 | 2017-05-31 | 深圳市国人射频通信有限公司 | One kind is electrically coupled port organization and cavity body filter |
| CN107123843A (en) * | 2017-06-20 | 2017-09-01 | 深圳市国人射频通信有限公司 | A kind of wave filter |
| CN110224209A (en) * | 2019-03-28 | 2019-09-10 | 广东通宇通讯股份有限公司 | A kind of two-way fabrication formula filter |
| CN210074121U (en) * | 2019-07-31 | 2020-02-14 | 昆山立讯射频科技有限公司 | Double-sided cavity tap connecting structure |
| CN110783674A (en) * | 2019-12-03 | 2020-02-11 | 迈特通信设备（苏州）有限公司 | Broadband small-size filter port tapping structure |
| CN210926257U (en) * | 2019-12-13 | 2020-07-03 | 武汉凡谷电子技术股份有限公司 | Full-through-hole millimeter wave filter |
| CN113809494A (en) * | 2020-06-17 | 2021-12-17 | 大富科技(安徽)股份有限公司 | Communication device and filter thereof |
| CN112599943A (en) * | 2020-11-16 | 2021-04-02 | 武汉凡谷电子技术股份有限公司 | Novel stamping and rolling low pass and processing technology thereof |
| CN214957292U (en) * | 2021-07-09 | 2021-11-30 | 昆山立讯射频科技有限公司 | Radio frequency cavity filter |
| CN214957290U (en) * | 2021-07-12 | 2021-11-30 | 昆山立讯射频科技有限公司 | Cavity filter |
| CN215771478U (en) * | 2021-07-14 | 2022-02-08 | 大富科技(安徽)股份有限公司 | Tap connecting sheet and cavity filter |
| CN216793962U (en) * | 2021-12-06 | 2022-06-21 | 大富科技(安徽)股份有限公司 | Filter |
Non-Patent Citations (3)
| Title |
|---|
| Application of the tapping positions to harmonic suppression bandpass filter design;X. J. Zhong;《2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT)》;全文 * |
| 双传输零点 C 波段腔体滤波器的设计与实现;范童修;《微波学报》;全文 * |
| 基于AFSLR谐振器的三通带带通滤波器设计;刘海文;《 江西师范大学学报》;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115411477A (en) | 2022-11-29 |
| TW202414894A (en) | 2024-04-01 |
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