CN109935947A - Tubulose filter - Google Patents
Tubulose filter Download PDFInfo
- Publication number
- CN109935947A CN109935947A CN201910194190.8A CN201910194190A CN109935947A CN 109935947 A CN109935947 A CN 109935947A CN 201910194190 A CN201910194190 A CN 201910194190A CN 109935947 A CN109935947 A CN 109935947A
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- China
- Prior art keywords
- pcb board
- pcb
- shell
- tubulose filter
- board
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims abstract description 60
- 238000009413 insulation Methods 0.000 claims description 21
- 239000003292 glue Substances 0.000 claims description 17
- 239000011324 bead Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 abstract description 15
- 230000037431 insertion Effects 0.000 abstract description 15
- 239000004568 cement Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
-
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Filters And Equalizers (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
- Structure Of Printed Boards (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention provides a kind of tubulose filters, including the shell with first end and second end, the PCB capacitance component in the shell, the inductor in the shell, be installed on the shell first end first terminal and be installed on the shell second end Second terminal, the PCB capacitance component include be integrated with feedthrough capacitor pcb board and the patch capacitor being installed on the pcb board.Tubulose filter of the present invention is by using the pcb board for being integrated with feedthrough capacitor, and patch capacitor is set on pcb board, to form PCB capacitance component, to which feedthrough capacitor is integrated in pcb board, it avoids directly using capacitance short-circuit Problem of Failure caused by feedthrough capacitor, can be simultaneously reached the requirement of low insertion loss.
Description
Technical field
The invention belongs to filter fields, are to be related to a kind of tubulose filter more specifically.
Background technique
Tubulose filter is a kind of common filter form, has compact-sized, the larger isopreference of relative bandwidth.It is right
In the tubulose filter of 10KHz-1GHz frequency range, usually directly it is inserted into using ceramic feedthrough capacitor with reaching
Loss.However ceramic feedthrough capacitor is easy to appear short-circuit failure in this filter.
Summary of the invention
The purpose of the present invention is to provide a kind of tubulose filters, to solve tubulose filter existing in the prior art
The problem of middle ceramics feedthrough capacitor is easy to appear short-circuit failure.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of tubulose filter is provided, including has the
The shell of one end and second end, the inductor in the shell, is installed on the PCB capacitance component in the shell
The Second terminal of the first terminal of the first end of the shell and the second end for being installed on the shell, the PCB capacitance component
Including being integrated with the pcb board of feedthrough capacitor and the patch capacitor being installed on the pcb board.
Further, the pcb board is multilayer board, and printed circuit board described in multilayer forms the punching
Capacitor.
Further, the center of the pcb board is equipped with through-hole, and the inner wall of the through-hole is equipped with central electrode, described
The back side of pcb board is equipped with grounding electrode.
Further, the grounding electrode is two, and two grounding electrodes extend along the periphery of the pcb board to be set
It sets.
Further, the front of the pcb board is equipped with several pairs of connections electricity for being electrically connected the patch capacitor
Pole.
Further, the patch capacitor is set in pairs on the pcb board, it is each to the patch capacitor with the pcb board
Center be symmetry axis circular array be set to the pcb board.
Further, the first insulation board is equipped in the shell, first insulation board is located at the inductor close to institute
State the one side of PCB capacitance component.
Further, the second insulation board is equipped in the shell, second insulation board is located at the inductor away from institute
State the one side of PCB capacitance component.
Further, magnetic bead is equipped between the PCB capacitance component and the inductor.
Further, solidification glue is filled in the shell.
The beneficial effect of tubulose filter provided by the invention is: compared with prior art, tubulose filter of the present invention
By using being integrated with the pcb board of feedthrough capacitor, and patch capacitor is set on pcb board, to form PCB capacitance component, thus
Feedthrough capacitor is integrated in pcb board, avoids directly using capacitance short-circuit Problem of Failure caused by feedthrough capacitor, while can be with
Reach the requirement of low insertion loss.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, embodiment or the prior art will be retouched below
Attached drawing needed in stating is briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention one
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other attached drawings.
Fig. 1 is the schematic cross-sectional view for the tubulose filter that the embodiment of the present invention one provides；
Fig. 2 is the positive structure diagram for the tubulose filter that the embodiment of the present invention one provides；
Fig. 3 is the side structure schematic view of tubulose filter shown in Fig. 2；
The front viewing angle constructions schematic diagram of pcb board in the tubulose filter that Fig. 4 provides for the embodiment of the present invention one；
The back side viewing angle constructions schematic diagram of pcb board in the tubulose filter that Fig. 5 provides for the embodiment of the present invention one；
The structural schematic diagram of PCB capacitance component in the tubulose filter that Fig. 6 provides for the embodiment of the present invention one.
Fig. 7 is the front viewing angle constructions schematic diagram of pcb board in tubulose filter provided by Embodiment 2 of the present invention.
The front viewing angle constructions schematic diagram of pcb board in the tubulose filter that Fig. 8 provides for the embodiment of the present invention three；
The structural schematic diagram of PCB capacitance component in the tubulose filter that Fig. 9 provides for the embodiment of the present invention three.
The front viewing angle constructions schematic diagram of pcb board in the tubulose filter that Figure 10 provides for the embodiment of the present invention four；
The structural schematic diagram of PCB capacitance component in the tubulose filter that Figure 11 provides for the embodiment of the present invention four.
Wherein, each attached drawing main mark in figure:
100- tubulose filter；10- shell；11- cover board；12- support sleeve；The second internal screw thread of 121-；122- external screw thread；
123- locking nut；The first internal screw thread of 13-；14- grades of rings；141- annular groove；21- first terminal；The first insulating cement of 211-；22-
Two-terminal；The second insulating cement of 221-；23- inductor；The first insulation board of 24-；The second insulation board of 25-；26- magnetic bead；27- solidification
Glue；30-PCB capacitance component；31-PCB plate；311- through-hole；312- central electrode；313- grounding electrode；314- connection electrode；
315- groove；316- pad；32- patch capacitor.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
Only to explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed
Or implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or two
More than, unless otherwise specifically defined." several " are meant that one or more, unless otherwise clearly specific
It limits.
In the description of the present invention, it is to be understood that, term " center ", " length ", " width ", " thickness ", "upper",
The orientation or position of the instructions such as "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside"
Relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, without referring to
Show or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot manage
Solution is limitation of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements or the interaction relationship of two elements.For those of ordinary skill in the art and
Speech, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
For convenience of description, being described as follows using English in the present invention:
PCB (Printed Circuit Board), Chinese is printed circuit board, also known as printed wiring board, also referred to as
For pcb board.
Embodiment one:
Fig. 1 and Fig. 2 is please referred to, now tubulose filter 100 provided by the invention is illustrated.The tubulose filter
100, including shell 10, PCB capacitance component 30, inductor 23, first terminal 21 and Second terminal 22.Shell 10 has first
End and second end have accommodating space in shell 10, to accommodate electronic device.First terminal 21 and Second terminal 22 are distinguished
Be installed on the both ends of shell 10, first terminal 21 is drawn by the first end of shell 10, Second terminal 22 by shell 10 second end
It draws, it may be assumed that first terminal 21 is installed on the first end of shell 10, and Second terminal 22 is installed on the second end of shell 10, so as to
Connection uses.PCB capacitance component 30 and inductor 23 are mounted in shell 10, to support and protect PCB electric by shell 10
Hold component 30 and inductor 23.PCB capacitance component 30 and inductor 23 are electrically connected, and pass through first terminal 21 and second end
Son 22 is drawn, to use.Referring to Figure 4 together to Fig. 6, PCB capacitance component 30 includes the pcb board for being integrated with feedthrough capacitor
31 and the patch capacitor 32 that is installed on pcb board 31.Feedthrough capacitor is integrated in pcb board 31, it is short-circuit to avoid feedthrough capacitor,
Patch capacitor 32 is installed on PCB plate 31 simultaneously, to be adjusted to capacitance and capacitance characteristic, to keep the PCB electric
Hold the insertion loss index that component 30 can achieve ceramic feedthrough capacitor, i.e. realization low insertion loss, and avoids short circuit, into
And the tubulose filter 100 can preferably be avoided to fail.
Tubulose filter 100 provided by the invention, compared with prior art, tubulose filter 100 of the present invention by using
It is integrated with the pcb board 31 of feedthrough capacitor, and patch capacitor 32 is set on pcb board 31, to form PCB capacitance component 30, thus
Feedthrough capacitor is integrated in pcb board 31, avoids directly using capacitance short-circuit Problem of Failure caused by feedthrough capacitor, while can
To reach the requirement of low insertion loss.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, pcb board 31 is multilayer board, and multilayer board forms feedthrough capacitor, that is, is making multi-sheet printed electricity
When the plate of road, that is, when making pcb board 31, it is formed simultaneously feedthrough capacitor, that is to say, that punching electricity is gone out using print circuit plates making
Hold, to make feedthrough capacitor be integrated into pcb board 31, to avoid short circuit.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, in the present embodiment, printed circuit board is 5 layers, and in other embodiments, printed circuit board may be 4 layers, 6 layers, 7 layers
Etc. quantity.It specifically can according to need setting；Certainly, the number of plies of printed circuit board is more, and capacitance is also bigger.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the center of pcb board 31 are equipped with through-hole 311, and the inner wall of through-hole 311 is equipped with central electrode 312, and the back side of pcb board 31 is set
There is grounding electrode 313.In order to which the connection of the pcb board 31 uses, while being also convenient for installation and fixing the pcb board 31.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, central electrode 312 are extended in the corresponding position in 311 edge of through-hole on 31 front of pcb board and the back side, to facilitate welding
Connection.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, grounding electrode 313 are two, and two grounding electrodes 313 are extended along the periphery of pcb board 31, to increase grounding electrode
313 area is not only convenient for being grounded, and can reduce insertion loss.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, two grounding electrodes 313 are symmetrically distributed in the two sides of pcb board 31, to reduce insertion loss, while be also convenient for design with
Production, and it is also convenient for grounding connection.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the two sides on the periphery of pcb board 31 open up fluted 315 respectively, can be with groove 315 in order to when installing PCB plate 31
Installation fixation is carried out to pcb board 31, while being also convenient for conducting wire and passes through.The both ends of each grounding electrode 313 extend respectively to neighbouring
The position of two grooves 315, it is larger to make the area of grounding electrode 313, it is used convenient for ground connection, while reducing insertion
Loss.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, each groove 315 are arc-shaped, and to reduce the inside corner angle of pcb board 31, reduce insertion loss.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the front of pcb board 31 are equipped with several pairs of connection electrodes 314 for being electrically connected patch capacitor 32.Connection electrode 314
It is arranged in pairs, to be separately connected the two poles of the earth of patch capacitor 32.And each pair of connection electrode 314 is set to the front of pcb board 31,
In order to which grounding electrode 313 is spaced apart, mutual influence is reduced.Preferentially, patch capacitor 32 is ceramic paster capacitor.
Further, fig. 4 to fig. 6 is please referred to, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, patch capacitor 32 in pairs be set to pcb board 31 on, each pair of patch capacitor 32 using the center of PCB plate 31 as symmetry axis in a ring
Array is set on pcb board 31, that is to say, that and two patch capacitors 32 of each centering are symmetrically distributed in the two sides of pcb board 31, with
Guarantee the good symmetry of capacitor, reduces insertion loss.In the present embodiment, pcb board 31 is rounded, then the two of each centering paste
Chip capacitor 32 is symmetrically distributed in the both ends of pcb board 31 diametrically.Further, in this embodiment patch capacitor 32 is two,
I.e. patch capacitor 32 is a pair.
In some other embodiment, patch capacitor 32 or two pairs, three pairs, four pairs etc. quantity.Certainly, such as
When fruit patch capacitor 32 is multiple, then these patch capacitors 32 are set to by symmetry axis circular array of the center of pcb board 31
On pcb board 31, preferably to carry out symmetric configuration, facilitate design, while reducing insertion loss.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, PCB capacitance component 30 are located at the first end of shell 10, and inductor 23 is located at the second end of shell 10, in order to PCB electricity
Hold the layout of component 30 and inductor 23, while reducing the volume of the tubulose filter 100 of production.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, shell 10 is cylindrical, to produce columned filter.Pcb board 31 is rounded, to make full use of shell 10
In space fix pcb board 31.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the first insulation board 24 is equipped in shell 10, and the first insulation board 24 is located at inductor 23 close to the one of PCB capacitance component 30
Face.First insulation board 24 is set, the electromagnetic interference influence between PCB capacitance component 30 and inductor 23 can be preferably prevented, is dropped
Low insertion loss, and prevent PCB capacitance component 30 short-circuit, improve the stability of the tubulose filter 100.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the second insulation board 25 is equipped in shell 10, and the second insulation board 25 is located at inductor 23 away from the one of PCB capacitance component 30
Face.Second insulation board 25 is set, can reduce the external influence to inductor 23, while can preferably protect inductor 23.
Further, the first insulation board 24 and the second insulation board 25 are the two sides for being respectively provided at inductor 23, can preferably protect electricity
Sensor 23.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
It is equipped with magnetic bead 26 between PCB capacitance component 30 and inductor 23, magnetic bead 26 is set, preferably to inhibit high-frequency noise and spike
Interference absorbs electrostatic pulse, reduces insertion loss.Further, magnetic bead 26 is located at the center of pcb board 31.With convenient
Magnetic bead 26 is installed, and is also convenient for positioning magnetic bead 26.Still further, the first insulation board 24 is supported at 26 bottom of magnetic bead, to make full use of
Space in shell 10 reduces volume, and preferably separates PCB capacitance component 30 and inductor 23, reduces PCB capacitor
Electromagnetic interference influence between component 30 and inductor 23.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
Solidification glue 27 is filled in shell 10.Solidification glue 27 is filled, in shell 10 with by solidification glue 27 that pcb board 31, patch is electric
Hold 32 and inductor 23 wrap up, to be formed by curing integral structure, do not contacted with shell, it is Wen Chong, random vibration, high-frequency vibration, low
The stress that the tests such as frequency vibration, impact generate is born by pcb board 31 first, to achieve the purpose that protect capacitor, is improved and is stablized
Property and reliability.Preferentially, solidification glue 27 can be A/B glue.Certainly, it may be other glue, such as epoxide-resin glue that solidification is de-
Deng.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
Shell 10 is metal-back, to improve the intensity of shell 10, while can shield the extraneous influence to electronic device in shell 10,
Reduce insertion loss.In addition, shell 10 is used into metal-back, it can also be by the grounding electrode 313 and shell 10 on pcb board 31
It is electrical connected, to be preferably grounded.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
First terminal 21 is located at the central region of the first end of shell 10, between the inner wall and first terminal 21 of the first end of shell 10
Filled with the first insulating cement 211, to support first terminal 21.First insulating cement 211 can be G500 glue, or its
Its glue, such as epoxide-resin glue.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
The inner surface of the first end of shell 10 is equipped with the first internal screw thread 13, and fills out between the inner wall due to first end and first terminal 21
Filled with the first insulating cement 211, then first internal screw thread 13 is set in the inner surface of the first end of shell 10, the first insulation is de- to fill out
The first internal screw thread 13 is filled, to preferably fix the first insulating cement 211, prevents the first insulating cement 211 from falling off.
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
The first end of shell 10 is equipped with shelves ring 14, and the lateral surface of shelves ring 14 is connected with the inner surface of shell 10, so as to pass through shelves ring
14 carry out the first insulating cement of backstop 211, preferably to prevent the first insulating cement 211 from falling off, and then preferably support first terminal
21。
Further, referring to Fig. 1, a kind of specific embodiment as tubulose filter 100 provided by the invention,
Annular groove 141 is offered on the medial surface of shelves ring 14, then the first insulating cement 211 can fill annular groove 141, preferably to fix first
Insulating cement 211.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, the second end of shell 10 have cover board 11, and support sleeve 12 is arranged in the center of cover board 11, and Second terminal 22 is supported in support
In set 12, cover board 11 is set in the second end of shell 10, then in assembling, preferably electronic device can be positioned.Such as
In the present embodiment, it can be convenient and inductor 23 is positioned, and then other electronic devices are positioned.In cover board 11
Support sleeve 12 is arranged in the heart, and Second terminal 22 is supported in support sleeve 12, preferably to support Second terminal 22.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, Second terminal 22 are located at 12 center of support sleeve, and second is filled between Second terminal 22 and the inner wall of support sleeve 12
Insulating cement 221.Second insulating cement 221 is set, preferably to support Second terminal 22, and can be preferably to Second terminal
22 carry out insulation processing.Second insulating cement 221 can be G500 glue, or other glue, such as epoxide-resin glue.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode sets the second internal screw thread 121 in support sleeve 12, and between Second terminal 22 and the inner wall of support sleeve 12 absolutely filled with second
Edge glue 221, then the second insulating cement 221 can fill the second internal screw thread 121, and then can prevent the second insulating cement 221 from falling off.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, support sleeve 12 are equipped with external screw thread 122, to facilitate installation to fix, so that it is convenient to use.Further, support sleeve 12
On locking nut 123 is installed, to be locked when installing fixed.
Further, it please refers to Fig.1 to Fig.3, a kind of specific implementation as tubulose filter 100 provided by the invention
Mode, cover board 11, support sleeve 12 are integrally formed with shell 10, to facilitate processing and fabricating, while increasing intensity.
The tubulose filter 100 of the present embodiment after tested, can be reached from the insertion loss index of 10KHz-1GHz frequency range
To the level for using ceramic feedthrough capacitor, realizes whole encapsulating, improve product reliability, and reduce product cost.And it can be with
It realizes that whole encapsulating, the terminal of tubulose filter 100 are anti-rotational, anti-dial, improves 100 anti-vibration of tubulose filter, shock resistance energy
Power is avoided the short-circuit failure problem directly occurred using ceramic feedthrough capacitor, improves the reliability of product, meet GJB1518A-
The test requirements document of 2015 and GJB360B.
Embodiment two:
Referring to Fig. 7, the difference of the tubulose filter of the present embodiment and the tubulose filter of embodiment one are as follows:
In the present embodiment, the front of pcb board 31 is set as 6 pairs of connection electrodes 314, then needs to install 6 on the pcb board 31
A patch capacitor 32.Further, which is arranged by symmetry axis circular array of 31 central axis of pcb board.
The other structures of the tubulose filter of the present embodiment and the other structures of tubulose filter of embodiment one are identical,
Details are not described herein.
Embodiment three:
Please refer to Fig. 8 and Fig. 9, the difference of the tubulose filter of the tubulose filter and embodiment one of the present embodiment are as follows:
In the present embodiment, the front of pcb board 31 is set as 4 pairs of connection electrodes 314, then needs to install 4 on the pcb board 31
A patch capacitor 32.Further, which is arranged by symmetry axis circular array of 31 central axis of pcb board.
The other structures of the tubulose filter of the present embodiment and the other structures of tubulose filter of embodiment one are identical,
Details are not described herein.
Example IV:
Please refer to Figure 10 and Figure 11, the difference of the tubulose filter of the tubulose filter and embodiment one of the present embodiment are as follows:
In the present embodiment, the front of pcb board 31 is set as 6 pairs of connection electrodes 314, then needs to install 6 on the pcb board 31
A patch capacitor 32.Further, which is arranged by symmetry axis circular array of 31 central axis of pcb board.
Further, there is area of space, then 6 pairs of connection electrodes 314 are in pcb board between adjacent two pairs of connection electrodes 314
31 fronts form 6 area of space, and two grooves 315 are located in opposite two spaces region, and another 4 space regions
Pad 316 is respectively equipped on domain, to facilitate carry out circuit connection.
The other structures of the tubulose filter of the present embodiment and the other structures of tubulose filter of embodiment one are identical,
Details are not described herein.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. tubulose filter, it is characterised in that: including the shell with first end and second end, the PCB in the shell
Capacitance component, the inductor in the shell, be installed on the shell first end first terminal and be installed on described
The Second terminal of the second end of shell, the PCB capacitance component include being integrated with the pcb board of feedthrough capacitor and being installed on described
Patch capacitor on pcb board.
2. tubulose filter as described in claim 1, it is characterised in that: the pcb board is multilayer board, and multilayer
The printed circuit board forms the feedthrough capacitor.
3. tubulose filter as claimed in claim 2, it is characterised in that: the center of the pcb board is equipped with through-hole, the through-hole
Inner wall be equipped with central electrode, the back side of the pcb board is equipped with grounding electrode.
4. tubulose filter as claimed in claim 3, it is characterised in that: the grounding electrode is two, two ground connection
Electrode is extended along the periphery of the pcb board.
5. tubulose filter according to any one of claims 1-4, it is characterised in that: the front of the pcb board is equipped with and is used for
It is electrically connected several pairs of connection electrodes of the patch capacitor.
6. tubulose filter as claimed in claim 5, it is characterised in that: the patch capacitor is set in pairs on the pcb board,
It is each that the pcb board is set to by symmetry axis circular array of the center of the pcb board to the patch capacitor.
7. tubulose filter according to any one of claims 1-4, it is characterised in that: be equipped with the first insulation in the shell
Plate, first insulation board are located at the inductor close to the one side of the PCB capacitance component.
8. tubulose filter according to any one of claims 1-4, it is characterised in that: be equipped with the second insulation in the shell
Plate, second insulation board are located at the one side that the inductor deviates from the PCB capacitance component.
9. tubulose filter according to any one of claims 1-4, it is characterised in that: the PCB capacitance component and the electricity
Magnetic bead is equipped between sensor.
10. tubulose filter according to any one of claims 1-4, it is characterised in that: be filled with solidification glue in the shell.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194190.8A CN109935947B (en) | 2019-03-14 | 2019-03-14 | Tubular filter |
| PCT/CN2019/079891 WO2020034640A1 (en) | 2019-03-14 | 2019-03-27 | Tubular filter |
| JP2019524057A JP6865279B2 (en) | 2019-03-14 | 2019-03-27 | Cylindrical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910194190.8A CN109935947B (en) | 2019-03-14 | 2019-03-14 | Tubular filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109935947A true CN109935947A (en) | 2019-06-25 |
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| JP (1) | JP6865279B2 (en) |
| CN (1) | CN109935947B (en) |
| WO (1) | WO2020034640A1 (en) |
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| CN112469196A (en) * | 2019-09-06 | 2021-03-09 | 中兴通讯股份有限公司 | Mainboard, noise reduction method and terminal |
| CN114914645A (en) * | 2022-05-05 | 2022-08-16 | 福建火炬电子科技股份有限公司 | Multi-core group capacitor filter and production method thereof |
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Also Published As
| Publication number | Publication date |
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| WO2020034640A1 (en) | 2020-02-20 |
| JP6865279B2 (en) | 2021-04-28 |
| CN109935947B (en) | 2023-11-10 |
| JP2020533780A (en) | 2020-11-19 |
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