CN109713413A - A kind of coupled structure of band-stop response communication headend equipment component - Google Patents
A kind of coupled structure of band-stop response communication headend equipment component Download PDFInfo
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- CN109713413A CN109713413A CN201910135549.4A CN201910135549A CN109713413A CN 109713413 A CN109713413 A CN 109713413A CN 201910135549 A CN201910135549 A CN 201910135549A CN 109713413 A CN109713413 A CN 109713413A
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- coupling unit
- coupler
- stopband
- band
- headend equipment
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- 238000004891 communication Methods 0.000 title claims abstract description 32
- 230000004044 response Effects 0.000 title claims abstract description 25
- 230000008878 coupling Effects 0.000 claims abstract description 80
- 238000010168 coupling process Methods 0.000 claims abstract description 80
- 238000005859 coupling reaction Methods 0.000 claims abstract description 80
- 229910052751 metal Inorganic materials 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims abstract description 56
- 238000005452 bending Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims description 35
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A kind of coupled structure of band-stop response communication headend equipment component.The present invention by adjusting connection stopband coupler and coupling unit metal connection parts width, length, crooked place and/or bending angle, it more can flexibly and effectively compensate the impedance and electrical length of coupling unit, so as to improve the electrical property of bandstop filter, reduce the design volume of bandstop filter.The coupled structure can be widely used in microwave band-elimination filter or in the communication headend equipment component such as resistance combiner.
Description
Technical field
The present invention relates to microwave device fields, in particular to a kind of coupling of band-stop response communication headend equipment component
Structure.
Background technique
Bandstop filter, combiner etc. are widely used in the headend equipment of the communications field, and the index quality of product can be straight
It connects and influences entire communication quality.In order to meet some technical specifications such as: capacitive cross coupling, tap coupler, volume, weight,
Technical indicator etc. may be coupled with coupling unit with resonant rod mobile jib in product design process.And coupling unit and resonance
When bar mobile jib couples, due to the limitation such as structure and size and the mismachining tolerance of component, the indexs such as sensitivity of coupling surface, to one
For a little high request products, it is difficult to meet.Bandstop filter electrical length actually required and resistance requirements, often with coupling surface
The indexs contradiction such as sensitivity, causes product index to be unable to satisfy, and performance is poor, and consistency is poor.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of band-stop responses to communicate the coupled structure of headend equipment component,
The electrical length and/or impedance for the coupling unit that the present invention is attached thereto by metal connection parts compensation, optimization communication front end are set
The performance parameter of standby component.The present invention specifically adopts the following technical scheme that.
Firstly, to achieve the above object, proposing a kind of coupled structure of band-stop response communication headend equipment component, packet
Include: main transmission pole is used for transmission microwave signal；Coupling unit, including at least one, the coupling unit include fixing end and
Coupled end, the fixing end connect the main transmission pole, and the coupled end extends to corresponding stopband coupling by the main transmission pole
It closes intracavitary；Metal connection parts are set in the stopband coupler, from the bottom of the stopband coupler to the coupling part
The side of part coupled end extends, and the electrical length and/or impedance for compensating the coupling unit are to right with stopband coupler institute
The stop-band frequency answered matches.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the metal connection parts with
The coupled end of the coupling unit is electrically connected.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the metal connection parts by
Metal fixing screws are fixed on the bottom of the stopband coupler, close to the side of the coupling unit；The metallic connection parts
Part is provided at least one bending, is stretched out upwards by the position that the metal fixing screws are fixed, with the coupling unit
Coupled end electrical connection.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the fixation of the coupling unit
The outside of the stopband coupler is fixed at end by the fixation kit that insulate.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the insulation fixation kit packet
Include nonmetallic support ring and nonmetallic screw；The bottom of the cavity where the main transmission pole is arranged in the nonmetallic support ring,
The internal diameter of the nonmetallic support ring and the diameter of thread of the nonmetallic screw match；The fixing end of the coupling unit is set
It is equipped with the through-hole fixed for the nonmetallic screw；The nonmetallic screw passes through the through-hole for the fixation of the coupling unit
End is fixed on the upper surface of the nonmetallic support ring, and the height of the nonmetallic support ring can at least support the coupling part
Part does not contact always with the inner wall of the cavity where the stopband coupler or the main transmission pole.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, in the stopband coupler also
It is provided with resonator, the resonator is hollow cylindrical structure, and the downside of the resonator passes through resonator fixing screws 0
It is fixed on the bottom middle position of the stopband coupler；The coupled end of the coupling unit is stretched to described by the main transmission pole
The coupled end of the diametrical direction of resonator, the coupling unit is additionally provided in the position close to the resonator towards the resistance
The bending of bottom with coupler, the coupled end after bending are axial parallel with the resonator.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the metal connection parts are set
It sets between the inner sidewall in resonator and the stopband coupler close to the coupling unit；The side of the metal connection parts
To the inner sidewall being parallel in the stopband coupler close to the coupling unit；And the direction of the metal connection parts is also hung down
Directly in the direction that the coupling unit is extended from the main transmission pole to the resonator.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the metal connection parts are
Copper material, width, length, crooked place and/or the bending angle of the metal connection parts are according to the electricity of the coupling unit
Length and/or impedance and determine, the electrical length and/or impedance for compensating the coupling unit are to right with stopband coupler institute
The stop-band frequency answered matches.
Optionally, in the coupled structure of above-mentioned band-stop response communication headend equipment component, the communication headend equipment portion
Part include bandstop filter or with resistance combiner.
Beneficial effect
The present invention, by adjusting the width of connection stopband coupler and the metal connection parts of coupling unit, length, crooked place
And/or bending angle, the impedance and electrical length of coupling unit can be compensated, flexibly and effectively more so as to improve bandstop filter
Electrical property, reduce the design volume of bandstop filter.The coupled structure can be widely used in microwave band-elimination filter or band
It hinders in the communication headend equipment component such as combiner.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the overall structure diagram of bandstop filter of the invention；
Fig. 2 is schematic cross-section of the bandstop filter shown in Fig. 1 in the direction A-A '；
Fig. 3 is the schematic diagram of bandstop filter inner couplings structure in the present invention；
In figure, 1 indicates cavity；2 indicate cover board；3 indicate cover board mounting screw；4 indicate nonmetallic support ring；5 indicate nonmetallic
Screw；6 indicate sheet metal；7 indicate metal nuts；8 indicate metal tuning plug；9 indicate resonator；10 indicate the fixed spiral shell of resonator
Nail；11 indicate metal connection parts；12 indicate metal fixing screws；13 indicate connector fixing screws；14 indicate connector.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, is clearly and completely described the technical solution of the embodiment of the present invention.Obviously, described embodiment is of the invention
A part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of being not necessarily to creative work.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
The meaning of heretofore described "and/or" refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of heretofore described " inside and outside " refers to the cavity that headend equipment component is communicated relative to band-stop response
Itself, it is interior for being directed toward the direction of inside cavity, otherwise is outer；Rather than the specific restriction to the device of the invention mechanism.
The meaning of heretofore described " connection " can be between component be directly connected to be also possible to pass through between component
Other components are indirectly connected with.
The meaning of heretofore described " upper and lower " refers to the chamber that headend equipment component is communicated relative to band-stop response
Body, be by the direction that cover board is directed toward in the bottom of cavity on, under being by the direction that cover board is directed toward cavity bottom, rather than to this hair
The specific restriction of bright equipment mechanism.
Fig. 1 illustrates coupled structure provided by the present invention by taking a kind of microwave band-elimination filter as an example, and band resistance combiner is therewith
It is similar.The bandstop filter includes: the main transmission pole being arranged between communication two connector 14 of headend equipment and is fastened on main biography
Coupling unit between defeated bar and stopband coupler.Above structure is closed by cavity 1 and cover board 2, in closed region, along described
Main transmission pole direction is provided with main transmission pole cavity, and under the visual angle Fig. 1, the left side of the main transmission pole cavity is provided with needle accordingly
To two stopband couplers of different frequency.
Bandstop filter needs to be arranged are as follows: can not need by required frequency band signals, in other words to specific frequency
Segment signal carries out certain inhibition, and guarantees remaining frequency band signals and pass through.Firstly, to guarantee that it is described that all signals are able to enter
Filter, filter are typically provided with a main transmission pole, i.e. copper sheet between two connectors shown in Fig. 1.This copper sheet
The form of main transmission pole determines that nearly all signal can be transferred through.Then, it to realize bandreject filtering, needs on main transmission pole side
It is upper to add one and another single-chamber, that is, the stopband coupler of corresponding different frequency is coupled with main transmission pole.These single-chambers
Frequency just determines the frequency of stopband, the signal for being related to this frequency all in entire passband can be all coupled out,
The signal of this frequency is just lost on entire main transmission pole, to achieve the effect that band resistance.In general, single-chamber and single-chamber
Between correspond to the distance on main transmission pole, i.e. the requirement of electrical length between two coupling units extending into single-chamber is four points
One of wavelength, 1/8th wavelength can also be become, it is even more shorter.Here the coupling stopband frequency of wavelength and specific requirement
Rate is related.Shorter coupling unit size can be with saving components volume, aspect arrangement.But thing inperfect in every way.Coupling
Index will be sacrificed after the size of component is small.So becoming 1/8th wavelength electrical length or shorter, when,
Index will be deteriorated.At this time just need to introduce the thing of some compensation, i.e., the metal connection parts 11 in the corresponding present invention.
Its length thickness, that is, its electrical length and impedance, can integrate and compensate into corresponding part in main transmission pole, thus
Realize performance requirement.
The coupling unit includes at least one, and the coupling unit includes fixing end and coupled end, the fixing end
The main transmission pole is connected, the coupled end is extended in corresponding stopband coupler by the main transmission pole.The coupling
The fixing end of component is fastened on the communication headend equipment cavity by nonmetallic screw 5；The coupling unit and communication front end
Metal connection parts 11 are provided between equipment cavity, for adjusting electrical length and impedance.To realize preferable coupling effect,
In the structure of the present embodiment, the coupled end of the coupling unit be may be designed as: stretch to the resonator 9 by the main transmission pole
Diametrical direction, the coupled end of the coupling unit, which is additionally provided in the position close to the resonator 9 towards the stopband, to be coupled
The bending of the bottom of chamber, the coupled end after bending are axial parallel with the resonator 9.
It is different from existing scheme, since invention increases metal connection parts 11 and metal fixing screws 12.Metal connects
Relay part 11 is set in the stopband coupler, from the bottom of the stopband coupler to the coupling unit coupled end
Side extends, and is electrically connected with the coupled end of the coupling unit, i.e., the described metal connection parts 11 and sheet metal 6, for compensating
The electrical length of the coupling unit and/or impedance extremely match with stop-band frequency corresponding to the stopband coupler.
Specifically, the setting of metal connection parts 11 is coupled in the stopband coupler close to described in resonator 9
Between the inner sidewall of component.The metal connection parts 11 are fixed on the bottom of the stopband coupler, close to the coupling part
The side of part.The metal connection parts 11 may be provided at least one bending, so that the direction of the metal connection parts 11
It is parallel to the inner sidewall in the stopband coupler close to the coupling unit；And in the other end for stating metal connection parts 11,
The bending makes its direction also be normal to the direction that the coupling unit extends from the main transmission pole to the resonator 9.Gold
Belong to connecting component 11 to be fixed on from metal fixing screws 12 from the bottom of the stopband coupler to the coupling unit coupled end
Side extend, be electrically connected with the coupled end of the coupling unit, for compensating the electrical length and/or impedance of the coupling unit
Extremely match with stop-band frequency corresponding to the stopband coupler.Bandstop filter performance indicator provided by the present invention as a result,
Return loss variation range expanded, and can by adjust the width of metal connection parts 11, length, crooked place and/
Or bending angle carries out careful adjusting.
Further, one end of the metal connection parts 11 and the coupling unit electricity being fastened on communication headend equipment cavity
Connection, the other end can require the different location that stopband coupler is arranged in accordingly according to the compensation of electrical length and/or impedance,
By the length adjustment electrical length of the metal connection parts 11, the thickness shape by the metal connection parts 11 is corresponding
Adjust impedance.
The length for being mainly characterized by the metal connection parts 11 by adjusting connection cavity and coupling unit of the invention, compared with
Flexibly and effectively to change impedance and electrical length, improves the electrical property of bandstop filter, reduce the design volume of bandstop filter.
With reference to Fig. 2, above-mentioned filter further includes the resonator 9 being arranged in the stopband coupler.The resonator 9 is
The stopband coupler is fixed on by resonator fixing screws 10 in the downside of hollow cylindrical structure, the resonator 9
Bottom middle position.
The top of the resonator 9 is further provided with the same axial, gold that is extended downwardly by cavity cover board 2 therewith
Belong to tuning plug 8.It may also set up similar 8 structure of metal tuning plug above the main transmission pole.The metal tuning plug 8 passes through gold
Belong to nut 7 to be fixed on cover board 2, from cover board 2 vertically to the internal stretch of cavity 1, with the resonant parameter of adjusting means.Described
Metal tuning plug 8 usually may be selected to be aluminium, copper, etc. the specific location of metal materials, structural parameters, such as setting, protrude into chamber
Intracorporal length, diameter of metal tuning plug 8 etc. require according to device parameter performance and are arranged especially by software emulation.
Metal connection parts 11 in Fig. 3 are set as not with specific reference to stop-band frequency corresponding to different stopband couplers
The structure of same variation.Such as need a longer electrical length come when adjusting, the metal connection parts 11 in this place
With regard to lengthening a bit, if impedance will such as become smaller a bit, this place just needs slightly a bit.But the portion that this section is added simultaneously
Dividing can also affect to coupling, it is also desirable to do corresponding adjusting to coupling unit.That is, the present invention is between two connectors 14
The main transmission line that strip copper sheet is constituted is to the coupling between single metal chamber because joined one section of metallic connection parts of the invention
Part 11 and change, design parameter needs according to device index to do corresponding adjusting.
It is closer remoter higher lower also all to directly affect component 11 between above structure and device inside other each structures
Length influences the electrical length and/or impedance of coupling unit.
Under implementation shown in Fig. 3, the metal connection parts 11 are fixed on the bottom of the stopband coupler, connect
The side of the nearly coupling unit；The metal connection parts 11 are provided at least one bending, by the metal fixing screws
12 positions fixed are stretched out upwards, are electrically connected with the coupled end of the coupling unit.And the fixing end of coupling unit passes through absolutely
Edge fixation kit is fixed on the outside of the stopband coupler.The insulation fixation kit includes nonmetallic support ring 4 and Fei Jin
Belong to screw 5.Under a kind of concrete implementation mode, the cavity where the main transmission pole is arranged in the nonmetallic support ring 4
Bottom, the internal diameter of the nonmetallic support ring 4 and the diameter of thread of the nonmetallic screw 5 match；The coupling unit
Fixing end be provided with the through-hole fixed for the nonmetallic screw 5；The nonmetallic screw 5 passes through the through-hole for the coupling
The fixing end for closing component is fixed on the upper surface of the nonmetallic support ring 4, and the height of the nonmetallic support ring 4 at least can
The coupling unit is supported not contact always with the inner wall of the cavity where the stopband coupler or the main transmission pole.It is described
Metal connection parts 11 may be selected to be copper material.
As a result, the present invention by adjust metal connection parts 11 width, length, crooked place and/or bending angle into
The adjusting of the careful electrical length and impedance of row solves the problems, such as bandstop filter electrical length and impedance-compensated.The structure is easy to real
Existing and performance parameter consistency is good, easy to process, at low cost.
The above is only embodiments of the present invention, and the description thereof is more specific and detailed, and but it cannot be understood as right
The limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention
Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (9)
1. a kind of coupled structure of band-stop response communication headend equipment component characterized by comprising
Main transmission pole, is used for transmission microwave signal；
Coupling unit, including at least one, the coupling unit includes fixing end and coupled end, described in the fixing end connection
Main transmission pole, the coupled end are extended in corresponding stopband coupler by the main transmission pole；
Metal connection parts (11) are set in the stopband coupler, from the bottom of the stopband coupler to the coupling
The side of component coupled end extends, for compensate the coupling unit electrical length and/or impedance to the stopband coupler institute
Corresponding stop-band frequency matches.
2. the coupled structure of band-stop response communication headend equipment component as described in claim 1, which is characterized in that the metal
Connecting component (11) is electrically connected with the coupled end of the coupling unit.
3. the coupled structure of band-stop response communication headend equipment component as claimed in claim 2, which is characterized in that the metal
Connecting component (11) is fixed on the bottom of the stopband coupler, close to the side of the coupling unit；
The metal connection parts (11) are provided at least one bending, the position fixed by the metal fixing screws (12)
It stretches out, is electrically connected with the coupled end of the coupling unit upwards.
4. the coupled structure of the band-stop response communication headend equipment component as described in claim 1-3, which is characterized in that the coupling
The fixing end for closing component is fixed on the outside of the stopband coupler by the fixation kit that insulate.
5. the coupled structure of the band-stop response communication headend equipment component as described in claim 1-4, which is characterized in that described exhausted
Edge fixation kit includes nonmetallic support ring (4) and nonmetallic screw (5)；
The bottom of the cavity where the main transmission pole is arranged in the nonmetallic support ring (4), the nonmetallic support ring (4)
Internal diameter and the diameter of thread of the nonmetallic screw (5) match；
The fixing end of the coupling unit is provided with the through-hole fixed for the nonmetallic screw (5)；
The nonmetallic screw (5) passes through the through-hole and the fixing end of the coupling unit is fixed on the nonmetallic support ring
(4) upper surface, the height of the nonmetallic support ring (4) can at least support the coupling unit always not with the stopband
The inner wall of cavity where coupler or the main transmission pole contacts.
6. the coupled structure of band-stop response communication headend equipment component as claimed in claims 1-5, which is characterized in that the resistance
It is additionally provided with resonator (9) in band coupler, the resonator (9) is hollow cylindrical structure, under the resonator (9)
Side is fixed on the bottom middle position of the stopband coupler by resonator fixing screws (10)；
The coupled end of the coupling unit is stretched to the diametrical direction of the resonator (9), the coupling part by the main transmission pole
The coupled end of part is additionally provided with the bending towards the bottom of the stopband coupler in the position close to the resonator (9), curved
The coupled end after folding is axial parallel with the resonator (9).
7. the coupled structure of the band-stop response communication headend equipment component as described in claim 1-6, which is characterized in that the gold
Belong to connecting component (11) to be arranged between the inner sidewall in resonator (9) and the stopband coupler close to the coupling unit；
The inner sidewall of the metal connection parts (11) being oriented parallel in the stopband coupler close to the coupling unit；And institute
The direction for stating metal connection parts (11) also is normal to the coupling unit and is extended from the main transmission pole to the resonator (9)
Direction.
8. the coupled structure of the band-stop response communication headend equipment component as described in claim 1-7, it is characterised in that the gold
Belonging to connecting component (11) is copper material, width, length, crooked place and/or the bending angle of the metal connection parts (11)
It is determined according to the electrical length of the coupling unit and/or impedance, for compensating the electrical length and/or impedance of the coupling unit
Extremely match with stop-band frequency corresponding to the stopband coupler.
9. the coupled structure of band-stop response communication headend equipment component as claimed in claims 1-9, which is characterized in that described logical
News headend equipment component include bandstop filter or with resistance combiner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135549.4A CN109713413B (en) | 2019-02-25 | 2019-02-25 | Coupling structure of band-stop characteristic communication front-end equipment component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910135549.4A CN109713413B (en) | 2019-02-25 | 2019-02-25 | Coupling structure of band-stop characteristic communication front-end equipment component |
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| CN109713413A true CN109713413A (en) | 2019-05-03 |
| CN109713413B CN109713413B (en) | 2024-05-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847767A (en) * | 2010-05-27 | 2010-09-29 | 摩比天线技术（深圳）有限公司 | Band elimination filter, manufacturing method of band elimination filter and filtering device |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| CN207368186U (en) * | 2017-10-17 | 2018-05-15 | 深圳市大富科技股份有限公司 | A kind of bandstop filter and communication equipment |
| CN208062226U (en) * | 2018-04-08 | 2018-11-06 | 宁波华瓷通信技术有限公司 | A kind of bandstop filter |
| CN209418738U (en) * | 2019-02-25 | 2019-09-20 | 江苏贝孚德通讯科技股份有限公司 | A kind of coupled structure of band-stop response communication headend equipment component |
-
2019
- 2019-02-25 CN CN201910135549.4A patent/CN109713413B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847767A (en) * | 2010-05-27 | 2010-09-29 | 摩比天线技术（深圳）有限公司 | Band elimination filter, manufacturing method of band elimination filter and filtering device |
| CN106602191A (en) * | 2016-12-14 | 2017-04-26 | 京信通信技术(广州)有限公司 | High-performance band-stop filter and the communication cavity component thereof |
| CN207368186U (en) * | 2017-10-17 | 2018-05-15 | 深圳市大富科技股份有限公司 | A kind of bandstop filter and communication equipment |
| CN208062226U (en) * | 2018-04-08 | 2018-11-06 | 宁波华瓷通信技术有限公司 | A kind of bandstop filter |
| CN209418738U (en) * | 2019-02-25 | 2019-09-20 | 江苏贝孚德通讯科技股份有限公司 | A kind of coupled structure of band-stop response communication headend equipment component |
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| Publication number | Publication date |
|---|---|
| CN109713413B (en) | 2024-05-10 |
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