CN113922018A - High-pass filter and communication equipment - Google Patents
High-pass filter and communication equipment Download PDFInfo
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- CN113922018A CN113922018A CN202010659230.4A CN202010659230A CN113922018A CN 113922018 A CN113922018 A CN 113922018A CN 202010659230 A CN202010659230 A CN 202010659230A CN 113922018 A CN113922018 A CN 113922018A
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- 238000004891 communication Methods 0.000 title claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 91
- 239000004020 conductor Substances 0.000 claims description 53
- 239000002184 metal Substances 0.000 claims description 24
- 230000004323 axial length Effects 0.000 claims description 7
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 12
- 230000037431 insertion Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 11
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
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Classifications
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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
Abstract
The application discloses high pass filter and communication equipment, this high pass filter includes the casing at least to and set up a plurality of coaxial mainlines and a plurality of coaxial electric capacity in the casing. The coaxial capacitor is arranged between two adjacent coaxial main lines, and the coaxial capacitor and the coaxial main lines are arranged coaxially. Therefore, according to the high-pass filter provided by the application, the coaxial capacitor and the coaxial main line are coaxially arranged, so that the high-pass filter is large in size and high in Q value, the insertion loss of the high-pass filter can be reduced, and the power of the high-pass filter can be improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a high-pass filter and a communications device.
Background
At present, the filter is used as a communication device for frequency selection and signal suppression, and plays an important role in the field of communication radio frequency. With the continuous development of 5G communication technology, higher requirements are put on the power capacity and the insertion loss of a filter, and one of the important directions of filter design is to increase the power of the filter and reduce the insertion loss of the filter.
High-pass filters, which are commonly used filters, also need to meet the design requirements of high power and small loss. However, the existing high-pass filter is generally realized by a planar circuit of a common microstrip line, and on one hand, the planar circuit structure enables the high-pass filter to have large insertion loss and small power; on the other hand, the capacitor in the planar circuit structure is a planar capacitor, and the planar capacitor has poor heat dissipation and is not high in temperature resistance, so that the power of the high-pass filter is low.
Disclosure of Invention
In order to solve the above problems of the high pass filter of the prior art, the present application provides a high pass filter and a communication device.
In order to solve the above problem, an embodiment of the present application provides a high-pass filter, where the high-pass filter at least includes: the coaxial capacitor is arranged between two adjacent coaxial main lines, and the coaxial capacitors are arranged coaxially with the coaxial main lines.
Further, the coaxial capacitor includes: the coaxial first conductor, the medium body and the second conductor that set up, the first conductor includes first base and sets up the first boss on first base, the medium body includes the second base and sets up the second boss on the second base, second base and second boss are provided with first through-hole, first boss sets up in first through-hole, the second conductor includes the third base and sets up the third boss on the third base, the third boss is provided with the second through-hole for the second conductor forms a recess, the second boss sets up in the second through-hole.
Furthermore, the first conductor and the second conductor are made of metal, and the dielectric body is made of polytetrafluoroethylene.
Furthermore, the diameter of the first base and the diameter of the second base are equal to the diameter of the third boss, the diameter of the second base is larger than the diameter of the third boss, and the axial length of the first boss is equal to the sum of the axial lengths of the second base and the second boss.
Further, the filter includes seven coaxial main lines and six coaxial capacitors, wherein the first coaxial main line, the first coaxial capacitors, the second coaxial main line, the second coaxial capacitor, the third coaxial main line, the third coaxial capacitor, the fourth coaxial main line, the fourth coaxial capacitor, the fifth coaxial main line, the fifth coaxial capacitor, the sixth coaxial main line, the sixth coaxial capacitor and the seventh coaxial main line are sequentially arranged along the first direction.
Furthermore, the first conductor, the dielectric body and the second conductor of the first coaxial capacitor, the second coaxial capacitor and the third coaxial capacitor are sequentially arranged along a first direction, the first conductor, the dielectric body and the second conductor of the fourth coaxial capacitor, the fifth coaxial capacitor and the sixth coaxial capacitor are sequentially arranged along a second direction, and the second direction is opposite to the first direction.
The filter further comprises branch zeros, and the first coaxial main line, the second coaxial main line, the third coaxial main line, the fourth coaxial main line, the fifth coaxial main line and the sixth coaxial main line are all connected in parallel with the branch zeros.
Furthermore, the branch zero point comprises a metal sheet and a metal rod, the metal sheet is connected to the coaxial main line through the metal rod, and the metal sheets of all the branch zero points are arranged on the same plane.
Further, the filter also comprises a second metal rod, and the second metal rod is arranged on the seventh coaxial main line.
To solve the above problem, an embodiment of the present application further provides a communication device including the high-pass filter of any one of the above.
With respect to the prior art, the high-pass filter of the present application comprises at least: the coaxial capacitor is arranged between two adjacent coaxial main lines, and the coaxial capacitors are arranged coaxially with the coaxial main lines. Therefore, according to the high-pass filter provided by the application, the coaxial capacitor and the coaxial main line are coaxially arranged and are arranged in the shell, so that the high-pass filter is large in size and high in Q value, the insertion loss of the high-pass filter can be reduced, and the power of the high-pass filter can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a prior art planar capacitor;
FIG. 2 is a schematic diagram of the structure of a first embodiment of the high pass filter of the present application;
FIG. 3 is a schematic diagram of the structure of the coaxial capacitor of the high pass filter of the present application;
FIG. 4 is a schematic diagram of the structure of a second embodiment of the high pass filter of the present application;
FIG. 5 is an assembly schematic of a second embodiment of the high pass filter of the present application;
FIG. 6 is a schematic diagram of the high pass filter configuration of the present application;
fig. 7 is a schematic diagram of a simulation of the high pass filter of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The high-pass filter in the prior art generally adopts a planar circuit structure, and the high-pass filter of the planar circuit structure has small volume and low Q value, so that the high-pass filter has large insertion loss and small power. It should be noted that Q in the filter represents the quality factor of the filter, and Q is defined as the center frequency/filter bandwidth.
In addition, the capacitor of the high-pass filter of the planar circuit structure is a planar capacitor, please refer to fig. 1, which is a schematic cross-sectional view of a planar capacitor in the prior art.
As shown in fig. 1, the planar capacitor includes a PCB layer 11 and a PCB layer 13 disposed in different layers, and an insulating dielectric layer 12 disposed between the PCB layer 11 and the PCB layer 13. Because the base materials of the PCB layer 11 and the PCB layer 13 are glass fibers with poor heat dissipation, the heat dissipation of the planar capacitor is poor and the planar capacitor is not resistant to high temperature, so that the power of the high-pass filter of the planar circuit structure is low, and on the other hand, the insertion loss of the filter is also high due to the planar capacitor.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a first embodiment of the high-pass filter 20 of the present application.
As shown in fig. 2, the high-pass filter 20 of the present embodiment at least includes: a housing (not shown), and a plurality of coaxial main lines 21 and a plurality of coaxial capacitors 22 disposed in the housing. Air is filled between the plurality of coaxial main lines 21 and the plurality of coaxial capacitors 22 and the housing, that is, the air serves as a medium of the high pass filter 20.
The coaxial capacitors 22 are disposed between two adjacent coaxial main lines 21, and the coaxial capacitors 22 and the coaxial main lines 21 are sequentially disposed along the same axis L. Specifically, the axis L is a central axis of the coaxial capacitor 22 and the coaxial main line 21, that is, the coaxial capacitor 22 and the coaxial main line 21 are arranged in this order along the central axis L. In some other embodiments, the axis L may not be a central axis of the coaxial capacitor 22 and the coaxial main line 21, that is, only the coaxial capacitor 22 and the coaxial main line 21 may be sequentially disposed through the axis L.
In the present embodiment, the coaxial main line 21 and the coaxial capacitor 22 are disposed along the same axis L, and the medium of the high-pass filter 20 is air, so that the volume of the high-pass filter 20 is larger than that of the high-pass filter of the planar circuit structure, and the Q value is higher than that of the high-pass filter of the planar circuit structure, thereby increasing the power of the high-pass filter 20 and reducing the insertion loss of the high-pass filter 20; further, the coaxial main line 21 and the coaxial capacitors 22 are provided coaxially, which is convenient for design and manufacture, and more coaxial main lines 21 and coaxial capacitors 22 can be provided in the same volume, and the number of the coaxial main lines 21 and the coaxial capacitors 22 can be adapted to the design requirement of the high-pass filter 20 for the number of the coaxial main lines 21 and the coaxial capacitors 22.
Referring further to fig. 3, fig. 3 is a schematic structural diagram of the coaxial capacitor 22 of the present application. Specifically, the coaxial capacitor 22 includes: the first conductor 221, the dielectric body 222, and the second conductor 223 are arranged in this order along the same axis L. The first conductor 221 and the second conductor 223 are disposed opposite to each other, and an insulating dielectric body 222 is interposed between the first conductor 221 and the second conductor 223, thereby forming the coaxial capacitor 22. In the present embodiment, the axis L is a common central axis of the first conductor 221, the dielectric body 222, and the second conductor 223. In some other embodiments, the axis L may be a central axis common to only the first conductor 221 and the second conductor 223; instead of the central axis of any of the first conductor 221, the dielectric body 222, and the second conductor 223, only a partial structure of the first conductor 221, the dielectric body 222, and the second conductor 223 may be arranged in this order along the same axis L.
Specifically, referring to fig. 3, the first conductor 221 includes a first base 2211 and a first boss 2212 disposed on the first base 2211, the dielectric body 222 includes a second base 2221 and a second boss 2222 disposed on the second base, the second base 2221 and the second boss 2222 are provided with a first through hole 2223, the first boss 2212 is disposed in the first through hole 2223, the second conductor 223 includes a third base 2232 and a third boss 2231 disposed on the third base 2232, the third boss 2231 is provided with a second through hole 2233, so that the second conductor 223 forms a groove, and the second boss 2222 is disposed in the second through hole 2233.
The first conductor 221, the dielectric body 222 and the second conductor 223 are integrally formed, so as to ensure the stability of the respective structures and simplify the manufacturing process.
The first boss 2212 of the first conductor 221 is arranged in the second through hole 2233 of the second boss 2222 of the second conductor 223, so that the coaxial arrangement of the specific structure of the coaxial capacitor 22 is realized, a large space exists between the first boss 2212 and the second boss 2222, the heat dissipation is facilitated, the power of the high-pass filter 20 can be improved, and the insertion loss of the high-pass filter 20 can be reduced.
More specifically, the first conductor 221 and the second conductor 223 are made of metal, and the dielectric body 222 is made of teflon. The ptfe has the characteristics of high temperature resistance and high heat dissipation capability, and the dielectric body 222 is made of ptfe, so that the heat dissipation capability of the coaxial capacitor 22 is further improved, and the power of the high-pass filter 20 is further improved. In other embodiments, the dielectric body 222 may be at least one of rubber, plastic, or ceramic material having insulating properties.
Specifically, the diameter of the first base 2211 is equal to the diameter of the second base 2221 is equal to the diameter of the third boss 2231, the diameter of the second base 2221 is greater than the diameter of the third boss 2231, and the axial length of the first boss 2212 is equal to the sum of the axial lengths of the second base 2221 and the second boss 2222. The diameters of the first base 2211, the second base 2221, and the third boss 2231 each refer to the maximum diameter of the bottom circle. The axial lengths of the first boss 2212, the second base 2221, and the second boss 2222 respectively refer to the maximum lengths in the extending directions of the central axes L.
Referring to fig. 4, fig. 5 and fig. 6 together, fig. 4 is a schematic structural diagram of a second embodiment of the high-pass filter 20 of the present application, fig. 5 is an assembly schematic diagram of the second embodiment of the high-pass filter 20 of the present application, and fig. 6 is a schematic structural diagram of an external shape of the high-pass filter 20 of the present application.
Specifically, as shown in fig. 4 and 5, the high-pass filter 20 of the present embodiment includes seven coaxial main lines and six coaxial capacitors, wherein the first coaxial main line 301, the first coaxial capacitor 302, the second coaxial main line 303, the second coaxial capacitor 304, the third coaxial main line 305, the third coaxial capacitor 306, the fourth coaxial main line 307, the fourth coaxial capacitor 308, the fifth coaxial main line 309, the fifth coaxial capacitor 310, the sixth coaxial main line 311, the sixth coaxial capacitor 312, and the seventh coaxial main line 313 are sequentially disposed along the first direction d 1.
For specific arrangement of the coaxial main line and the coaxial capacitor, please refer to the previous embodiment, which is not described herein again.
Specifically, as shown in fig. 4 and 5, the first conductor 221, the dielectric body 222, and the second conductor 223 of the first coaxial capacitor 302, the second coaxial capacitor 304, and the third coaxial capacitor 306 are sequentially disposed along the first direction d1, respectively, the first conductor 221, the dielectric body 222, and the second conductor 223 of the fourth coaxial capacitor 308, the fifth coaxial capacitor 310, and the sixth coaxial capacitor 312 are sequentially disposed along the second direction d2, respectively, and the first direction d1 is opposite to the second direction d 2. That is, the directions of arrangement of the first conductor 221, the dielectric body 222, and the second conductor 223 of the first coaxial capacitor 302, the second coaxial capacitor 304, and the third coaxial capacitor 306 are opposite to the directions of arrangement of the first conductor 221, the dielectric body 222, and the second conductor 223 of the fourth coaxial capacitor 308, the fifth coaxial capacitor 310, and the sixth coaxial capacitor 312.
Further, the high pass filter 20 of the present embodiment further includes a branch zero 316, and the first coaxial main line 301, the second coaxial main line 303, the third coaxial main line 305, the fourth coaxial main line 307, the fifth coaxial main line 309, and the sixth coaxial main line 311 are all connected in parallel with the branch zero 316.
Referring to fig. 4, fig. 4 schematically illustrates a connection manner of a branch zero 316 and the second coaxial main line 303, as shown in fig. 4, the branch zero 316 includes a metal plate 315 and a metal rod 314, and the metal plate 315 is connected to the second coaxial main line 303 through the metal rod 314. The connection mode of the other branch zero points 316 and the other coaxial main lines is the same, and the description is omitted. The metal sheets 315 of the branch zero point 316 are disposed on the same plane.
Further, as shown in fig. 6, all the coaxial main lines, all the coaxial capacitors, the branch zero 316, and the second metal rod 317 of the high-pass filter 20 are disposed in a housing 318, and the housing 318 is filled with an air medium.
The branch zero 316 can realize zero suppression, which is convenient for index debugging of the high-pass filter 20. Moreover, the branch zero 316 can make the transmission function of the high-pass filter 20 equal to zero, that is, the electromagnetic energy at the frequency point corresponding to the branch zero 316 cannot pass through the network, so that the complete isolation effect is achieved, the suppression effect is achieved on the signals outside the passband of the high-pass filter 20, and the high isolation from the passband and the outside can be better achieved. Therefore, in the high-pass filter 20 of the present embodiment, the branch zeros are provided in parallel to each of the coaxial main lines, whereby the out-of-band rejection performance of the high-pass filter 20 can be improved.
Further, the second metal bar 317 is provided in the seventh coaxial main line 313, and the second metal bar 317 can improve the out-of-band rejection performance of the high pass filter 20.
The passband frequency range of the high-pass filter 20 provided in this embodiment is 4800-13000MHz, and the stopband frequency range is 100-3800MHz, that is, the high-pass filter 20 provided in this embodiment can pass signals with the frequency range of 4800-13000MHz, but cannot pass signals with the frequency range of 100-3800 MHz.
Referring to fig. 7, fig. 7 is a simulation diagram of the high pass filter 20 of the present application.
As shown in fig. 7, a curve x is a simulation curve of the high-pass filter 20, in which the frequency at the frequency point m1 is 4.8GHz, the frequency at the frequency point m2 is 13GHz, and the frequency at the frequency point m3 is 3.8 GHz.
As can be seen from the simulation curve x in the figure, the return loss of the high-pass filter 20 of the present embodiment in the frequency range of 4800-13000MHz is not less than 16 dB; the maximum insertion loss in the frequency range of 4800-13000MHz is 0.5dB, the insertion loss ripple in the frequency range of 4800-13000MHz is 0.3dB, and the inhibition in the frequency range of 100-3800MHz is not less than 95 dB.
Therefore, the high-pass filter 20 of the present embodiment has a small insertion loss in the pass band frequency range and a high suppression outside the pass band.
The input rms power in the pass band 4800-13000MHz frequency is 200W, and the input peak power in the pass band 4800-13000MHz frequency is 2000W. Therefore, the present embodiment provides a high pass filter 20 with a large power in its operating frequency range.
The embodiment of the present application also provides a communication device, which includes the high-pass filter 20 described above.
The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A high-pass filter is characterized by at least comprising a shell, a plurality of coaxial main lines and a plurality of coaxial capacitors, wherein the coaxial capacitors are arranged in the shell, the coaxial capacitors are arranged between two adjacent coaxial main lines, and the coaxial capacitors are arranged coaxially with the coaxial main lines.
2. The filter of claim 1, wherein the coaxial capacitor comprises a first conductor, a dielectric body and a second conductor, the first conductor comprises a first base and a first boss disposed on the first base, the dielectric body comprises a second base and a second boss disposed on the second base, the second base and the second boss are provided with a first through hole, the first boss is disposed in the first through hole, the second conductor comprises a third base and a third boss disposed on the third base, the third boss is provided with a second through hole, so that the second conductor forms a groove, and the second boss is disposed in the second through hole.
3. The filter of claim 2,
the first conductor and the second conductor are made of metal, and the dielectric body is made of polytetrafluoroethylene.
4. The filter of claim 2,
the diameter of the first base and the diameter of the second base are equal to the diameter of the third boss, the diameter of the second base is larger than the diameter of the third boss, and the axial length of the first boss is equal to the sum of the axial lengths of the second base and the second boss.
5. The filter of claim 2,
the filter comprises seven coaxial main lines and six coaxial capacitors, wherein the first coaxial main line, the first coaxial capacitors, the second coaxial main line, the second coaxial capacitor, the third coaxial main line, the third coaxial capacitor, the fourth coaxial main line, the fourth coaxial capacitor, the fifth coaxial main line, the fifth coaxial capacitor, the sixth coaxial main line, the sixth coaxial capacitor and the seventh coaxial main line are sequentially arranged along a first direction.
6. The filter of claim 5,
the first conductor, the dielectric body and the second conductor of the first coaxial capacitor, the second coaxial capacitor and the third coaxial capacitor are sequentially arranged along the first direction, the fourth coaxial capacitor, the fifth coaxial capacitor, the first conductor, the dielectric body and the second conductor of the sixth coaxial capacitor are sequentially arranged along the second direction, and the second direction is opposite to the first direction.
7. The filter of claim 5,
the filter further includes branch zeros, and the branch zeros are connected in parallel to the first coaxial main line, the second coaxial main line, the third coaxial main line, the fourth coaxial main line, the fifth coaxial main line, and the sixth coaxial main line.
8. The filter of claim 7,
the branch zero point comprises a metal sheet and a metal rod, the metal sheet is connected to the coaxial main line through the metal rod, and the metal sheets of all the branch zero points are arranged on the same plane.
9. The filter of claim 7, further comprising a second metal rod disposed on the seventh coaxial main line.
10. A communication device, characterized in that the communication device comprises an antenna and a radio frequency unit, the antenna being connected to the radio frequency unit, the radio frequency unit comprising a high pass filter according to any of claims 1-9 for filtering radio frequency signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659230.4A CN113922018A (en) | 2020-07-09 | 2020-07-09 | High-pass filter and communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659230.4A CN113922018A (en) | 2020-07-09 | 2020-07-09 | High-pass filter and communication equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113922018A true CN113922018A (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010659230.4A Pending CN113922018A (en) | 2020-07-09 | 2020-07-09 | High-pass filter and communication equipment |
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| CN (1) | CN113922018A (en) |
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|---|---|---|---|---|
| JPH09326332A (en) * | 1996-06-04 | 1997-12-16 | Nec Corp | Co-axial capacitor mounting structure, and coupled co-axial capacitor therefor |
| US20030218521A1 (en) * | 2002-05-23 | 2003-11-27 | Masamichi Andoh | Band eliminate filter and communication apparatus |
| WO2015099668A1 (en) * | 2013-12-23 | 2015-07-02 | Intel Corporation | Through-body-via isolated coaxial capacitor and techniques for forming same |
| EP2928011A1 (en) * | 2014-04-02 | 2015-10-07 | Andrew Wireless Systems GmbH | Microwave cavity resonator |
| CN105070992A (en) * | 2015-08-19 | 2015-11-18 | 成都九洲迪飞科技有限责任公司 | Wide-bandpass stop-band filter |
| US20170110776A1 (en) * | 2014-03-24 | 2017-04-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Coaxial filter and method for manufacturing the same |
| CN207009613U (en) * | 2017-07-24 | 2018-02-13 | 杭州杭淳广播电视设备有限公司 | A kind of frequency modulation 10kW low pass filters |
| CN210092307U (en) * | 2019-08-01 | 2020-02-18 | 京信通信技术(广州)有限公司 | High-low pass combiner |
| CN210111012U (en) * | 2019-08-01 | 2020-02-21 | 京信通信技术(广州)有限公司 | High-pass filter and communication cavity device with same |
-
2020
- 2020-07-09 CN CN202010659230.4A patent/CN113922018A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09326332A (en) * | 1996-06-04 | 1997-12-16 | Nec Corp | Co-axial capacitor mounting structure, and coupled co-axial capacitor therefor |
| US20030218521A1 (en) * | 2002-05-23 | 2003-11-27 | Masamichi Andoh | Band eliminate filter and communication apparatus |
| WO2015099668A1 (en) * | 2013-12-23 | 2015-07-02 | Intel Corporation | Through-body-via isolated coaxial capacitor and techniques for forming same |
| US20170110776A1 (en) * | 2014-03-24 | 2017-04-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Coaxial filter and method for manufacturing the same |
| EP2928011A1 (en) * | 2014-04-02 | 2015-10-07 | Andrew Wireless Systems GmbH | Microwave cavity resonator |
| CN105070992A (en) * | 2015-08-19 | 2015-11-18 | 成都九洲迪飞科技有限责任公司 | Wide-bandpass stop-band filter |
| CN207009613U (en) * | 2017-07-24 | 2018-02-13 | 杭州杭淳广播电视设备有限公司 | A kind of frequency modulation 10kW low pass filters |
| CN210092307U (en) * | 2019-08-01 | 2020-02-18 | 京信通信技术(广州)有限公司 | High-low pass combiner |
| CN210111012U (en) * | 2019-08-01 | 2020-02-21 | 京信通信技术(广州)有限公司 | High-pass filter and communication cavity device with same |
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Application publication date: 20220111 |