CN1577645A - Screw electric inductor - Google Patents
Screw electric inductor Download PDFInfo
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- CN1577645A CN1577645A CN 200410063717 CN200410063717A CN1577645A CN 1577645 A CN1577645 A CN 1577645A CN 200410063717 CN200410063717 CN 200410063717 CN 200410063717 A CN200410063717 A CN 200410063717A CN 1577645 A CN1577645 A CN 1577645A
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Abstract
Provided is a spiral inductor capable of increasing the Q thereof as much as possible while suppressing the deterioration of a self resonance frequency as much as possible. The spiral inductor is provided with a flat sheet type insulating substrate 1, and a conductor 2 formed of a conductor pattern on at least one side of the insulating substrate 1 and arranged spirally while retaining an interval D between the neighboring conductive patterns so as to have a given width. The interval d5 of inside of the spiral shape is formed so as to be narrower than another interval d1 of the outside of the spiral shape whereby the winding diameter of the conductor 2 positioned at the inside of the spiral shape becomes big and connection between the conductors becomes dense, thereby increasing an inductance and, as a result, the Q (Quality factor) can be increased.
Description
Technical field
The present invention relates to a kind of spiral in ductor (spiral inductor) that is applicable in various electronic circuit cells or the electronic circuit module etc.
Background technology
Fig. 2 is the accompanying drawing of the existing spiral in ductor of explanation, is the plane graph of existing spiral in ductor.
Below, the structure according to Fig. 2 illustrates existing spiral in ductor in the one side side of flat insulated substrate 51, is provided with the conductor 52 that is formed by conductive pattern, the square vortex shape (spirality) at maintenance interval 53 between these conductor 52 formation are adjacent.
These conductor 52 integral body form with certain width (identical width), and to have the state of same size to the interval 53 of the integral body of inboard from the outside of vortex shape, dispose conductor 52.
In addition, the another side side at insulated substrate 51 is provided with wiring figure 54, and the conductor 52 that is positioned at vortex shape the inner is connected with an end of wiring figure 54 by through hole (bonding conductor).
By such structure, formed existing spiral in ductor.(for example, with reference to patent documentation 1: Japanese kokai publication hei 10-125860)
Known existing spiral in ductor with this spline structure in the certain area on insulated substrate 51, forms conductor 52 with certain width, in order to improve Q (Qualityfactor: quality factor), and interval 53 is narrowed down.
But if interval 53 is narrowed down, then the electric capacity (capacity) that produces between adjacent conductor 52 sometimes increases, and self-resonant frequency significantly reduces, and can not be used for inductor in high frequency.
Therefore, 53 state forms conductor 52 to enlarge at interval a little, and still, because the interval 53 of vortex shape integral body is big, the coupling between the therefore adjacent conductor 52 becomes dredges (slightly), thereby inductance reduces, Q (Qualityfactor: quality factor) reduce.
Existing spiral in ductor, form the vortex shape owing to have the conductor 52 of certain width with identical distance 53, therefore such problem is arranged: because the electric capacity between the adjacent conductor 52 and the relation of coupling, if improve Q, then self-resonant frequency reduces, if the raising self-resonant frequency, then Q reduces.
Summary of the invention
Therefore, the object of the present invention is to provide the reduction of doing one's utmost to suppress self-resonant frequency, and can improve the spiral in ductor of Q.
As the 1st solution that is used to address the above problem, make such structure: have flat insulated substrate and conductor, above-mentioned conductor utilizes conductive pattern to form, keep between adjacent conductor at interval and be configured to the vortex shape and have certain width in the side of one side at least of above-mentioned insulated substrate; The above-mentioned interval of the inboard of above-mentioned vortex shape forms narrowlyer than the above-mentioned interval in the outside of above-mentioned vortex shape.
In addition, as the 2nd solution, structure is: above-mentioned vortex shape forms square.
In addition, as the 3rd solution, structure is: above-mentioned vortex shape forms circle.
In addition, as the 4th solution, structure is: above-mentioned interval along with from the outside of above-mentioned vortex shape to the inboard, narrow down according to each circle of above-mentioned vortex shape.
In addition, as the 5th solution, structure is: above-mentioned conductor forms line part and bend alternate configurations, along with from the outside of above-mentioned vortex shape to the inboard, the above-mentioned interval of the above-mentioned line part of each above-mentioned bend is narrowed down.
In addition, as the 6th solution, structure is: above-mentioned interval is along with the outside from above-mentioned vortex shape narrows down gradually to the inboard.
In addition, as the 7th solution, structure is: above-mentioned insulated substrate is made of aluminium oxide, and above-mentioned conductor is formed by film.
Description of drawings
Fig. 1 is the plane graph of spiral in ductor of the present invention.
Fig. 2 is the plane graph of existing spiral in ductor.
Embodiment
Accompanying drawing to spiral in ductor of the present invention describes.Fig. 1 is the plane graph of spiral in ductor of the present invention.
Next, the structure of spiral in ductor of the present invention is described according to Fig. 1, in the one side side of flat insulated substrates 1 such as aluminium oxide, the conductor that conductive pattern forms 2 that is made of film etc. is set, this conductor 2 form adjacent between the vortex shape of square (quadrangle) of maintenance interval D.
In addition, insulated substrate 1 also can use the insulated substrate beyond the aluminium oxide, and conductor 2 also can form with the methods such as printing beyond the film.
These conductor 2 integral body form with certain width (identical width), and interval D forms along with the outside from the vortex shape narrows down to the inboard.
In addition, the interval D of vortex shape inboard also can be narrower than the interval D in the vortex shape outside.
In addition, the conductor 2 of vortex shape forms bend 2b and line part 2a alternate configurations, and, along with from the outside of vortex shape to the inboard, the interval D of the line part 2a of each bend 2b is narrowed down.
That is, as shown in Figure 1, compare with the interval d1 that is positioned at outermost line part 2a, the interval d2 of the 2nd line part 2a that extends through the 1st bend 2b narrows down, and, comparing with the interval d2 of the 2nd line part 2a, the interval d3 of the 3rd line part 2a that extends through the 2nd bend 2b narrows down.
Like this, interval d1～d5 of line part 2a is along with line part 2a narrows down to the inboard in turn from the outside of vortex shape.
In addition, the another side side at insulated substrate 1 is provided with wiring figure 3, and the conductor 2 that is positioned at vortex shape the inner is connected with an end of wiring figure 3 by through hole (bonding conductor).
According to such structure, formed spiral in ductor of the present invention.
Spiral in ductor of the present invention with this spline structure, in certain area on insulated substrate 1, form conductor 2 with certain width, because the interval d5 of vortex shape inboard forms narrowlyer than the interval d1 in the vortex shape outside, therefore the coupling of 2 of conductors becomes close, and, be positioned at the conductor 2 of vortex shape inboard, and compare winding diameter now and become big.
Consequently, because if the coupling between the conductor 2 becomes close, then winding diameter becomes big, so the inductance of inside part becomes greatly exponentially, like this, can improve Q (Qualityfactor: quality factor).
In addition, in spiral in ductor of the present invention, the interval d5 of vortex shape inboard narrows down than the interval d1 in the vortex shape outside, consequently the electric capacity between the conductor 2 of vortex shape inboard increases, but it is because short more a lot of than the length of the conductor 2 that is positioned at the vortex shape outside, therefore the increase of the electric capacity that produces between the whole conductor 2 can be reduced, and the reduction of self-resonant frequency can be reduced.
In addition, because the width of conductor 2 is certain, so the impedance of spiral in ductor is identical with outlet side at input side, when using in filter circuit, does not need the impedance matching with connecting circuit.
In addition, in the above-described embodiments, be the explanation of carrying out with the square vortex shape that constitutes by quadrangle, but also can use the square vortex shape that constitutes by triangle or pentagon.
In addition, in the above-described embodiments, be the explanation of carrying out with square vortex shape, but also can use circular vortex shape, at this moment, the interval of vortex shape inboard forms narrowlyer than the interval in the vortex shape outside, perhaps, at interval also can be along with the vortex shape narrows down gradually from the outside to the inboard.
In addition, the interval of square or circular vortex shape also can along with from the outside of vortex shape to the inboard, each circle of vortex shape all narrows down.
In addition, from drawing of the conductor 2 that is positioned at vortex shape inboard, also can on conductor 2, insulating barrier be set, and on this insulating barrier, form conductor introduction.
The present invention has following effect:
Spiral in ductor of the present invention has flat insulated substrate and possesses the conductor of certain width, this conductor this insulated substrate at least the one side side forms by conductive pattern and adjacent conductor between the maintenance compartment of terrain be configured to the vortex shape, the interval of vortex shape inboard forms narrowlyer than the interval in the vortex shape outside, therefore the winding diameter that is positioned at the conductor of vortex shape inboard becomes big, and, it is close that coupling between conductor becomes, it is big that inductance becomes, and consequently can improve Q (Qualityfactor: quality factor).
In addition, owing to compare with the interval in the vortex shape outside, the interval of vortex shape inboard narrows down, therefore the electric capacity between conductor increases, but the length that is positioned at the conductor of vortex shape inboard is lacked than the conductor length that is positioned at the vortex shape outside, therefore the increase of the electric capacity that produces between conductor can be reduced, the reduction of self-resonant frequency can be reduced.
Therefore in addition, because that the vortex shape forms is square, can improves the length and the precision at interval of conductor, thereby can obtain the high spiral in ductor of impedance precision.
In addition, because the vortex shape forms circle, so area occupied diminishes, thereby can obtain small-sized spiral in ductor.
In addition, along with from the outside of vortex shape to the inboard, each circle of vortex shape all makes at interval to narrow down, and therefore is positioned at the conductor of vortex shape inboard, can make winding diameter further become big, thereby can further improve Q.
In addition, conductor forms line part and bend alternate configurations, along with from the outside of vortex shape to the inboard, the interval of the line part of each bend is narrowed down, therefore be positioned at the conductor of vortex shape inboard, can further increase winding diameter, thereby can further improve Q.
In addition, along with the vortex shape from the outside to the inboard, narrow down gradually at interval, therefore be positioned at the conductor of vortex shape inboard, can further increase winding diameter, thereby can further improve Q.
In addition, insulated substrate is made of aluminium oxide, and conductor is formed by film, therefore can provide precision good spiral in ductor.
Claims (7)
1. spiral in ductor, it is characterized in that: have flat insulated substrate and conductor, above-mentioned conductor utilizes conductive pattern to form, keep between adjacent conductor at interval and be configured to the vortex shape and have certain width in the side of one side at least of above-mentioned insulated substrate;
The above-mentioned interval of the inboard of above-mentioned vortex shape forms narrowlyer than the above-mentioned interval in the outside of above-mentioned vortex shape.
2. spiral in ductor as claimed in claim 1 is characterized in that: above-mentioned vortex shape forms square.
3. spiral in ductor as claimed in claim 1 is characterized in that: above-mentioned vortex shape forms circle.
4. spiral in ductor as claimed in claim 1 is characterized in that: above-mentioned interval is along with the outside from above-mentioned vortex shape narrows down according to each circle of above-mentioned vortex shape to the inboard.
5. spiral in ductor as claimed in claim 2 is characterized in that: above-mentioned conductor forms line part and bend alternate configurations, along with from the outside of above-mentioned vortex shape to the inboard, the above-mentioned interval of the above-mentioned line part of each above-mentioned bend is narrowed down.
6. spiral in ductor as claimed in claim 3 is characterized in that: above-mentioned interval narrows down along with the outside from above-mentioned vortex shape makes gradually to the inboard.
7. spiral in ductor as claimed in claim 1 is characterized in that: above-mentioned insulated substrate is made of aluminium oxide, and above-mentioned conductor is formed by film.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003196297 | 2003-07-14 | ||
| JP2003196297A JP4448298B2 (en) | 2003-07-14 | 2003-07-14 | Spiral inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1577645A true CN1577645A (en) | 2005-02-09 |
| CN1252748C CN1252748C (en) | 2006-04-19 |
Family
ID=34206840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410063717 Expired - Fee Related CN1252748C (en) | 2003-07-14 | 2004-07-07 | Screw electric inductor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4448298B2 (en) |
| CN (1) | CN1252748C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584183A (en) * | 2019-02-15 | 2020-08-25 | 株式会社村田制作所 | Inductor component |
| CN114175862A (en) * | 2020-03-27 | 2022-03-11 | 住友电气工业株式会社 | Flexible printed wiring board and jitter correction module |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9431473B2 (en) | 2012-11-21 | 2016-08-30 | Qualcomm Incorporated | Hybrid transformer structure on semiconductor devices |
| US10002700B2 (en) | 2013-02-27 | 2018-06-19 | Qualcomm Incorporated | Vertical-coupling transformer with an air-gap structure |
| US9634645B2 (en) | 2013-03-14 | 2017-04-25 | Qualcomm Incorporated | Integration of a replica circuit and a transformer above a dielectric substrate |
| US9449753B2 (en) | 2013-08-30 | 2016-09-20 | Qualcomm Incorporated | Varying thickness inductor |
| US9906318B2 (en) | 2014-04-18 | 2018-02-27 | Qualcomm Incorporated | Frequency multiplexer |
| JP6260748B2 (en) * | 2015-08-07 | 2018-01-17 | 株式会社村田製作所 | Multilayer substrate and manufacturing method thereof |
| KR101963290B1 (en) | 2017-07-12 | 2019-03-28 | 삼성전기주식회사 | Coil component |
-
2003
- 2003-07-14 JP JP2003196297A patent/JP4448298B2/en not_active Expired - Fee Related
-
2004
- 2004-07-07 CN CN 200410063717 patent/CN1252748C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584183A (en) * | 2019-02-15 | 2020-08-25 | 株式会社村田制作所 | Inductor component |
| US11837395B2 (en) | 2019-02-15 | 2023-12-05 | Murata Manufacturing Co., Ltd. | Inductor component |
| CN114175862A (en) * | 2020-03-27 | 2022-03-11 | 住友电气工业株式会社 | Flexible printed wiring board and jitter correction module |
| US11657944B2 (en) | 2020-03-27 | 2023-05-23 | Sumitomo Electric Industries, Ltd. | Flexible printed circuit board and image stabilization module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1252748C (en) | 2006-04-19 |
| JP2005032976A (en) | 2005-02-03 |
| JP4448298B2 (en) | 2010-04-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20110707 |