CN110247637A - A kind of filter circuit construction - Google Patents
A kind of filter circuit construction Download PDFInfo
- Publication number
- CN110247637A CN110247637A CN201910615218.0A CN201910615218A CN110247637A CN 110247637 A CN110247637 A CN 110247637A CN 201910615218 A CN201910615218 A CN 201910615218A CN 110247637 A CN110247637 A CN 110247637A
- Authority
- CN
- China
- Prior art keywords
- circuit
- inductance
- circuit board
- filter circuit
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 8
- 230000037431 insertion Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
- H03H2001/0021—Constructional details
Abstract
The embodiment of the invention discloses a kind of filter circuit construction, the filter circuit construction includes first circuit board and second circuit board.The first circuit is provided on the first surface of the first circuit board, first circuit includes the first inductance, second circuit is provided on the second surface of the second circuit board, the second circuit includes the second inductance, the first surface is oppositely arranged with the second surface, at least one connecting component is provided between the first circuit board and the second circuit board, at least one described connecting component is electrically connected first circuit and the second circuit.The embodiment of the present invention by by filter circuit the first inductance and the second inductance be separately positioned on different circuit boards, and electrical connection is realized using connecting component, to substantially reduce the area of filter circuit design domain, and ensure that the filter with low insertion loss of the filter circuit, improve the performance of filter circuit.
Description
Technical field
The present embodiments relate to filter circuit technical field more particularly to a kind of filter circuit constructions.
Background technique
The development of integrated circuit, so that electronic component steps in terms of microminaturization, low-power consumption, intelligence and high reliability
Into major step.
Filter circuit in integrated circuit usually uses many inductance.Due to the coupling between inductance, so that component
Performance is difficult to be promoted, often using making layout type between inductance element away from each other, to reduce its coupling, but this point
Mode for cloth undoubtedly will affect the integrated level of circuit, size and cost.
While existing technical solution cannot achieve reduction circuit layout area, the performance of filter circuit is improved.
Summary of the invention
The present invention provides a kind of filter circuit construction, improves filter circuit while reducing circuit layout area to realize
Performance.
For this purpose, a kind of filter circuit construction provided in an embodiment of the present invention, comprising:
First circuit board and second circuit board are provided with the first circuit, the first circuit on the first surface of first circuit board
Including the first inductance, second circuit is provided on the second surface of second circuit board, second circuit includes the second inductance, the first table
Face is oppositely arranged with second surface, at least one connecting component, at least one are provided between first circuit board and second circuit board
A connecting component is electrically connected the first circuit and second circuit.
The embodiment of the present invention is separately positioned on different circuit boards by the inductance for connecting two in filter circuit,
To substantially reduce the area of filter circuit design domain；Two circuit boards are realized using the connecting component with certain altitude
On circuit between electrical connection reduced between the two to realize the electrical connection of two inductance and separate on position
The coefficient of coup improve the performance of filter circuit to reduce the Insertion Loss of filter circuit, totally realize raising filtered electrical
The effect of road integrated level and performance.
Detailed description of the invention
Fig. 1 is the schematic diagram of the inductance connection mode of filter circuit construction in existing IC design technology；
Fig. 2 is the top view of the circuit board provided in an embodiment of the present invention for being provided with filter circuit；
Fig. 3 is the sectional view of the AA ' line along Fig. 2；
Fig. 4 is the sectional view of the AA ' line along Fig. 2；
Fig. 5 is a kind of circuit diagram of bandwidth-limited circuit structure provided in an embodiment of the present invention；
Fig. 6 is the S parameter analogous diagram provided in an embodiment of the present invention for bandwidth-limited circuit shown in Fig. 5.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is the schematic diagram of the inductance connection mode of filter circuit construction in the prior art.As shown in Figure 1, filter circuit
In the first inductance L1 and the second inductance L2 connection, and be arranged on the same circuit board 40.To reduce the first inductance L1 and the
The coefficient of coup between two inductance L2 reduces filter circuit Insertion Loss, needs to keep the first inductance L1 and the second inductance L2 separate, but this
The area that sample will cause filter circuit domain increases, moreover, because the design space of circuit board is limited so that the first inductance L1 and
The distance of second inductance L2 is limited, is difficult to be promoted so as to cause filter circuit performance.
In view of the above-mentioned problems, the embodiment of the invention provides a kind of filter circuit constructions, and in this configuration, the first inductance L1
It is respectively arranged on different circuit boards with the second inductance L2, and realizes the first electricity using the connecting component with certain altitude
The electrical connection of L1 and the second inductance L2 and separate on the two position is felt, thus reducing filter circuit design chip area
While, the coefficient of coup between the first inductance L1 and the second inductance L2 is reduced, and then reduce circuit Insertion Loss, improves filter
The performance of wave circuit.
Embodiment one
Fig. 2 is the top view of the circuit board provided in an embodiment of the present invention for being provided with filter circuit, and Fig. 3 is along in Fig. 2
The sectional view of AA ' line.As shown in Figures 2 and 3, which includes: first circuit board 10 and second circuit board 20, and
The first circuit 11 is provided on the first surface of one circuit board 10, the first circuit 11 includes the first inductance L1, second circuit board 20
Second surface on be provided with second circuit 21, second circuit 21 includes the second inductance L2, and first surface is opposite with second surface
Setting, is provided at least one connecting component 30, at least one connecting component between first circuit board 10 and second circuit board 20
30 the first circuits 11 of electrical connection and second circuit 21.
Wherein, connecting component 30 has conductive capability and certain height, realizes support first by connecting component 30
Circuit board 10, and the effect of connection first circuit board 10 and the circuit on second circuit board 20.Specifically, as shown in Figure 3
The surface that circuit is provided on sectional view, first circuit board 10 and second circuit board 20 is relative to each other, and first circuit board 10
On the first circuit 11 and second circuit board 20 on second circuit 21 by connecting component 30 realize electrical connection, to realize
The electrical connection of first inductance L1 and the second inductance L2.
The working principle of the technical program: different circuit boards is arranged in the inductance of two connections in filter circuit
On, the electrical connection between the circuit in various boards is realized by connecting component 30, to reduce circuit design layout
Area；In addition, connecting component 30 has certain height, to ensure that remote on the first inductance L1 and the second position inductance L2
From reducing the coefficient of coup between inductance, and then reduce the Insertion Loss of filter circuit, improve the performance of filter circuit.
The embodiment of the present invention is separately positioned on different circuit boards by the inductance for connecting two in filter circuit,
To substantially reduce the area of filter circuit design domain；Two circuit boards are realized using the connecting component with certain altitude
On circuit between electrical connection reduced between the two to realize the electrical connection of two inductance and separate on position
The coefficient of coup improve the performance of filter circuit to reduce the Insertion Loss of filter circuit, totally realize raising filtered electrical
The effect of road integrated level and performance.
Fig. 4 is the sectional view of the AA ' line along Fig. 2.On the basis of the above embodiments, as shown in figure 4, optionally, at least
One connecting component 30 includes first connecting portion part 31 and second connecting portion part 32, along the first circuit board 10 and described second
The vertical direction CC ' of 20 orientation BB ' of circuit board, first connecting portion part 31 and second connecting portion part 32 are respectively arranged at first
Inductance L1 and the second inductance L2 opposite two sides.
Wherein, the orientation BB ' of first circuit board 10 and second circuit board 20 is i.e. electric with first circuit board 10 and second
The vertical direction of the plane of circuit is provided on road plate 20.Perpendicular to the orientation, in the first inductance L1 and the second inductance L2
Opposite two sides are symmetrical arranged first connecting portion part 31 and second connecting portion part 32, can guarantee the support to first circuit board 10
It is more steady, moreover, more connecting component 30, it is also convenient for being electrically connected for each component on the first circuit 11 and second circuit 21
It connects.
Optionally, when the quantity of at least one connecting component 30 is greater than 1, all connecting components 30 are in 10 He of first circuit board
Height in the orientation of second circuit board 20 is equal.
Wherein, height of the connecting component 30 in the orientation of first circuit board 10 and second circuit board 20 is equal to first
Vertical range between inductance L1 and the second inductance L2.The height of all connecting components 30 is equal, can guarantee first circuit board
10 and second circuit board 20 it is parallel to each other, thus guarantee the first inductance L1 and the second inductance L2 the coefficient of coup mainly by the two it
Between vertical range determine, to a certain extent exclude other factors influence.
Optionally, height of the connecting component 30 in the orientation of first circuit board 10 and second circuit board 20 be greater than or
Equal to 30 μm.At this point, the coefficient of coup of the first inductance L1 and the second inductance L2 compared with the prior art for can reduce 50%
To 60%, hence it is evident that improve the performance of filter circuit.
Optionally, the material of connecting component 30 is copper or tin.Copper and tin are all good conductivity and the higher material of hardness, and
And cost is relatively low, suitable for electrical connection and support.In the other embodiments of the embodiment of the present invention, connecting component 30 can also
To select other materials to make, it is not limited in the embodiment of the present invention.
Optionally, the first inductance L1 and the second inductance L2 is planar inductor.The thickness of planar inductor is small, suitable for collection
At in circuit and chip.
Optionally, when the first inductance L1 and the second inductance L2 are planar inductor, the central axis of the two is overlapped.At this point,
The coefficient of coup between first inductance L1 and the second inductance L2 is minimum.But the center of the coefficient of coup under this state and the two
Coefficient of coup when axis is not overlapped is very nearly the same, therefore, in the other embodiments of the embodiment of the present invention, the first inductance L1
It can not also be overlapped with the central axis of the second inductance L2, it is not limited in the embodiment of the present invention.
Fig. 5 is a kind of circuit diagram of the bandwidth-limited circuit structure provided in the embodiment of the present invention.It should be noted that
In the other embodiments of the embodiment of the present invention, filter circuit can be low-pass filter circuit, bandwidth-limited circuit, bandreject filtering
Any one of circuit, circuit of high pass filter and all-pass wave filtering circuit, it is not limited in the embodiment of the present invention.
As shown in figure 5, optional, second circuit 21 further includes first capacitor C1, the second capacitor C2, third capacitor C3 and the
Three inductance L3.The first electrode of first capacitor C1 is electrically connected with the first end of the second inductance L2, the second electrode of first capacitor C1
It being electrically connected with the input terminal 1 of the filter circuit, the first electrode of the second capacitor C2 is electrically connected with the first end of the second inductance L2, the
The second electrode of two capacitor C2 is electrically connected with the second end of the second inductance L2, the first electrode of third capacitor C3 and the second inductance L2
Second end electrical connection, the second electrode of third capacitor C3 is electrically connected with the output end 2 of the filter circuit, the of third inductance L3
One end is electrically connected with the second electrode of third capacitor C3, the second end ground connection of third inductance L3.
Wherein, input terminal 1 and output end 2 are the filter circuit and the end that other circuit units are electrically connected in integrated circuit
Mouthful, in the other embodiments of the present embodiment, port 1 or output end, port 2 may be input terminal, the present invention
Embodiment does not limit this.It should be understood that in the present embodiment, first capacitor C1, the second capacitor C2, third capacitor C3 and
Third inductance L3 is located on second circuit board 20, realizes above-mentioned electrical connection by the conducting wire on second circuit board 20.In this implementation
In the other embodiments of example, any one or more in these components can also be placed on first circuit board 10, be led to
It crosses connecting component 30 and realizes and be electrically connected with other components, it is not limited in the embodiment of the present invention.
Fig. 6 is the S parameter analogous diagram provided in an embodiment of the present invention for bandwidth-limited circuit shown in Fig. 5.Wherein, real
Line indicates that simulation result when all components in circuit shown in Fig. 5 are respectively positioned on same circuit board, dotted line indicate circuit shown in Fig. 5
Structure, i.e. the first inductance L1 and the second inductance L2 are located at simulation result when various boards.With reference to Fig. 6, the unit of abscissa
For GHz, the unit of ordinate is dB, and ordinate reflects the Insertion Loss of filter circuit.The emulation pair of two kinds of different filter circuit constructions
Than the result shows that, the Insertion Loss of circuit can be obviously reduced in filter circuit construction provided in an embodiment of the present invention.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (9)
1. a kind of filter circuit construction characterized by comprising first circuit board and second circuit board, the first circuit board
First surface on be provided with the first circuit, first circuit includes the first inductance, the second surface of the second circuit board
On be provided with second circuit, the second circuit includes the second inductance, and the first surface is oppositely arranged with the second surface,
At least one connecting component, at least one described connecting component are provided between the first circuit board and the second circuit board
It is electrically connected first circuit and the second circuit.
2. filter circuit construction according to claim 1, which is characterized in that at least one described connecting component includes first
Connecting component and second connecting portion part, along the vertical direction of the first circuit board and the second circuit board orientation, institute
State first connecting portion part and the second connecting portion part be respectively arranged at first inductance and second inductance it is opposite two
Side.
3. filter circuit construction according to claim 1, which is characterized in that the quantity of at least one connecting component is big
When 1, height of all connecting components in the orientation of the first circuit board and the second circuit board is equal.
4. filter circuit construction according to claim 1, which is characterized in that the connecting component is in the first circuit board
The height in orientation with the second circuit board is greater than or equal to 30 μm.
5. filter circuit construction according to claim 1, which is characterized in that the material of the connecting component is copper or tin.
6. filter circuit construction according to claim 1, which is characterized in that first inductance and second inductance are equal
For planar inductor.
7. filter circuit construction according to claim 6, which is characterized in that first inductance and second inductance
Central axis is overlapped.
8. filter circuit construction according to claim 1, which is characterized in that the filter circuit be low-pass filter circuit,
Any one of bandwidth-limited circuit, rejector circuit, circuit of high pass filter and all-pass wave filtering circuit.
9. filter circuit construction according to claim 1, which is characterized in that the second circuit further include first capacitor,
Second capacitor, third capacitor and third inductance；The first electrode of the first capacitor and the first end of second inductance are electrically connected
It connects, the second electrode of the first capacitor is electrically connected with the input terminal of the filter circuit, the first electrode of second capacitor
It is electrically connected with the first end of second inductance, the second electrode of second capacitor and the second end of second inductance are electrically connected
It connects, the first electrode of the third capacitor is electrically connected with the second end of second inductance, the second electrode of the third capacitor
It is electrically connected with the output end of the filter circuit, the first end of the third inductance and the second electrode of the third capacitor are electrically connected
It connects, the second end ground connection of the third inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615218.0A CN110247637A (en) | 2019-07-09 | 2019-07-09 | A kind of filter circuit construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910615218.0A CN110247637A (en) | 2019-07-09 | 2019-07-09 | A kind of filter circuit construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110247637A true CN110247637A (en) | 2019-09-17 |
Family
ID=67891412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910615218.0A Pending CN110247637A (en) | 2019-07-09 | 2019-07-09 | A kind of filter circuit construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110247637A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004343391A (en) * | 2003-05-15 | 2004-12-02 | Sharp Corp | Bandstop filter circuit and high frequency communication apparatus |
| US20100039189A1 (en) * | 2007-05-18 | 2010-02-18 | Murata Manufacturing Co., Ltd. | Laminated band-pass filter |
| CN202512184U (en) * | 2012-03-15 | 2012-10-31 | 鞍山雷盛电子有限公司 | High voltage load device of combined printed circuit board (PCB) |
| CN104682910A (en) * | 2015-03-10 | 2015-06-03 | 中国科学院微电子研究所 | Mutual inductance coupling filter |
| CN108346642A (en) * | 2018-04-13 | 2018-07-31 | 安徽云塔电子科技有限公司 | A kind of inductance stacked structure |
| CN109462383A (en) * | 2018-12-27 | 2019-03-12 | 安徽安努奇科技有限公司 | A kind of resonance circuit and filter |
| CN109638000A (en) * | 2019-01-29 | 2019-04-16 | 安徽安努奇科技有限公司 | A kind of integrated inductance structure and integrated circuit |
| CN109672421A (en) * | 2019-02-22 | 2019-04-23 | 安徽安努奇科技有限公司 | Filter circuit and multiplexer |
| CN209982452U (en) * | 2019-07-09 | 2020-01-21 | 安徽安努奇科技有限公司 | Filter circuit structure |
-
2019
- 2019-07-09 CN CN201910615218.0A patent/CN110247637A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004343391A (en) * | 2003-05-15 | 2004-12-02 | Sharp Corp | Bandstop filter circuit and high frequency communication apparatus |
| US20100039189A1 (en) * | 2007-05-18 | 2010-02-18 | Murata Manufacturing Co., Ltd. | Laminated band-pass filter |
| CN202512184U (en) * | 2012-03-15 | 2012-10-31 | 鞍山雷盛电子有限公司 | High voltage load device of combined printed circuit board (PCB) |
| CN104682910A (en) * | 2015-03-10 | 2015-06-03 | 中国科学院微电子研究所 | Mutual inductance coupling filter |
| CN108346642A (en) * | 2018-04-13 | 2018-07-31 | 安徽云塔电子科技有限公司 | A kind of inductance stacked structure |
| CN109462383A (en) * | 2018-12-27 | 2019-03-12 | 安徽安努奇科技有限公司 | A kind of resonance circuit and filter |
| CN109638000A (en) * | 2019-01-29 | 2019-04-16 | 安徽安努奇科技有限公司 | A kind of integrated inductance structure and integrated circuit |
| CN109672421A (en) * | 2019-02-22 | 2019-04-23 | 安徽安努奇科技有限公司 | Filter circuit and multiplexer |
| CN209982452U (en) * | 2019-07-09 | 2020-01-21 | 安徽安努奇科技有限公司 | Filter circuit structure |
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