CN1215497C - Hollow coil for high-frequency circuit - Google Patents
Hollow coil for high-frequency circuit Download PDFInfo
- Publication number
- CN1215497C CN1215497C CNB021316600A CN02131660A CN1215497C CN 1215497 C CN1215497 C CN 1215497C CN B021316600 A CNB021316600 A CN B021316600A CN 02131660 A CN02131660 A CN 02131660A CN 1215497 C CN1215497 C CN 1215497C
- Authority
- CN
- China
- Prior art keywords
- leads
- mentioned
- core coil
- frequency circuit
- wire
- 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.)
- Expired - Fee Related
Links
- 239000004020 conductor Substances 0.000 abstract 5
- 238000004804 winding Methods 0.000 abstract 5
- 238000006073 displacement reaction Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/02—Fixed inductances of the signal type without magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
To provide an air-core coil for high-frequency circuit which is suitable for physically thinner circuit and assures easy adjustment of the circuit. The air-core coil for high-frequency circuit comprises a winding portion 4, which is formed by winding two conductor wires 2, 3 in parallel and connecting portions 5a, 5b provided at the end part of the winding portion 4. Since two conductor wires 2, 3 are wound with each other under the parallel condition to a center line C1 of the winding portion 4 and have the connecting portions 5a, 5b where two conductor wires 2, 3 located at the end part are connected, the air-core coil 1 is formed of a bifilar wire and diameter A1 of the conductor wires 2, 3 can be set narrower than a diameter A2 of a conventional conductor wire 22. Therefore, height of the winding portion 4 of the air-core coil 1 can be set smaller than the conventional one from the surface of a printed circuit board 6.
Description
Technical field
The present invention relates to be applicable to the hollow coil for high-frequency circuit of the oscillating circuit of TV tuner and tuning circuit etc.
Background technology
The structure of hollow coil for high-frequency circuit in the past is described according to Fig. 3.For example,
Employed air core coil 21 in the high frequency of oscillating circuit has: adopt 1 lead 22 of thicker line footpath S2, be wound in the wire turn portion 23 of many circles and be arranged on connecting portion 24a, 24b on the both ends of this wire turn portion 23.
And, the air core coil 21 of Xing Chenging like this, as shown in Figure 3, center line C2 with respect to wire turn portion 23, lead 22 twines with parallel state, forms wire turn portion 23, and wire turn portion 23 is, and to be the center with center line C2 be entwined according to diameter Z2 (length till the center A2 of lead 22).
And, has this structure of hollow coil 21 structurally, be that connecting portion 24a, 24b are placed on respectively on conductive pattern 26a, the 26b, this conductive pattern is arranged on the printed circuit board 25 that forms circuit board, is connected respectively on conductive pattern 26a, the 26b by welding.
And, this air core coil 21, for example, in order to obtain the high oscillation frequency of oscillating circuit, use thick line footpath A2 lead, inductance is reduced, therefore, under the situation of using the lead 22 that is made of thick line footpath A2, the height of the air core coil of counting from the face of printed circuit board 25 21 increases, and does not meet the requirement of slimming.
Moreover the air core coil 21 that is installed on the printed circuit board 25 makes wire turn portion 23 at arrow Y2 direction top offset, changes the interval between the wire turn portion 23, can carry out the frequency adjustment.If use the lead 22 of thick line footpath A2, then the elasticity of itself (reset force during displacement) increases, and makes wire turn portion 23 on the arrow Y2 direction slightly under any situation of displacement, and this displaced portion turns back to original state again, and it adjusts operational difficulty, trouble.
The hollow coil for high-frequency circuit in past, the problem that exists is: for example, in order to obtain the high oscillation frequency of oscillating circuit, use thick line footpath A2 lead, inductance is reduced, therefore, using by thick line under the situation of the lead 22 that A2 constitutes, the height of the air core coil of counting from the face of printed circuit board 25 21 increases, and does not meet the requirement of slimming.
Another problem that exists is: if use the lead 22 of thick line footpath A2, then the elasticity of itself (reset force during displacement) increases, make wire turn portion 23 on the arrow Y2 direction slightly under any situation of displacement, this displaced portion turns back to original state again, and it adjusts operational difficulty, trouble.
The content of invention
Therefore, the object of the present invention is to provide a kind of suitable slimming, it is adjusted operation and is easy to hollow coil for high-frequency circuit.
The 1st method that addresses the above problem is: the structure of coil has: the connecting portion on wire turn portion that 2 leads that are arranged side by side are twined and the end that is arranged on this wire turn portion, above-mentioned 2 leads are wound under line and the state that the center line of above-mentioned wire turn portion parallels of central point separately connecting these 2 leads, simultaneously, have between above-mentioned 2 leads of end, carrying out interconnected above-mentioned connecting portion.
Moreover the 2nd method is: reel under the state of combining closely mutually at 2 leads.
Moreover the 3rd method is: structurally, the above-mentioned connecting portion of above-mentioned 2 leads is being connected on the above-mentioned wire pattern under the state on the wire pattern on the printed circuit board being arranged side by side.
Brief description of drawings
Fig. 1 relates to hollow coil for high-frequency circuit of the present invention, the side view of the installment state of expression air core coil on printed circuit board.
Fig. 2 relates to hollow coil for high-frequency circuit of the present invention, represents the key diagram of the relation of air core coil of the present invention and air core coil in the past.
Fig. 3 relates to hollow coil for high-frequency circuit in the past, the side view of the installment state of expression air core coil on printed circuit board.
The embodiment of invention
The accompanying drawing of hollow coil for high-frequency circuit of the present invention below is described.
Fig. 1 relates to hollow coil for high-frequency circuit of the present invention, and it is the side view of the installment state of expression air core coil on printed circuit board; Fig. 2 relates to hollow coil for high-frequency circuit of the present invention, and it is the key diagram of the relation of expression air core coil of the present invention and air core coil in the past.
Below with reference to the accompanying drawings 1 and Fig. 2, describe the structure of hollow coil for high-frequency circuit of the present invention in detail.
For example, the air core coil that is used for high frequency 1 of oscillating circuit has:
Wire turn portion 4, it adopts a kind of doublet cord, and this line is to be provided with abreast under the state that 2 leads 2,3 of thinner line footpath S1 are closely linked, and these 2 leads 2,3 twine many circles under the state that is arranged side by side; And
Connecting portion 5a, 5b, it is set on the both ends of this wire turn portion 4, to connecting between 2 leads 2,3.
Moreover, 2 leads 2,3, the dielectric film that is covered on the part except that connecting portion 5a, 5b (do not have diagram), simultaneously, each the bar lead 2,3 in 2, the diameter of its formation be about lead 22 in the past diameter 1/2nd
And, the air core coil 1 of Xing Chenging like this, structurally, especially as shown in Figure 2, with respect to the center line C1 of wire turn portion 4,2 leads the 2, the 3rd, parallel, under the state of combining closely, twine, form wire turn portion 4, wire turn portion 4 is the center with center line C1, twines according to diameter Z1 (length till the A1 place, center of lead 2,3).
That is to say that the diameter Z1 of air core coil 1 of the present invention forms and the diameter Z2 of the air core coil 21 of passing by equates, therefore, the length overall of the present invention and the air core coil of passing by is identical.
Moreover, air core coil of the present invention 1 with this structure, connecting portion 5a, 5b are placed on respectively on a kind of wire pattern 7a, the 7b, this conductive pattern 7a, 7b are arranged on the printed circuit board 6 of the printed circuit board that forms circuit board, are connected respectively on conductive pattern 7a, the 7b by welding.
And, if use the air core coil 1 that constitutes by doublet cord as in the present invention, so, for example, in order to obtain the high oscillation frequency of oscillating circuit, do not use the lead of thick line footpath A2, and use the lead of fine line diameter A1, can reduce inductance.
Therefore, as shown in Figure 2, the height of the wire turn portion 4 of air core coil 1 and is compared in the past, counts and can reduce from the face of printed circuit board 6, is suitable for the requirement of slimming.
Moreover, be installed in the air core coil 1 on the printed circuit board 6, on arrow Y1 direction, make 4 displacements of wire turn portion, change the interval between the wire turn portion 4, carry out the frequency adjustment.Owing to use the lead 2,3 of fine line diameter A1, so the elasticity of lead itself (reset force during displacement) is than in the past little, even make the displacement slightly of wire turn portion 4 air core coils on arrow Y1 direction, also can produce distortion on the position after this displacement, this adjustment processing ease carries out.
Moreover, connecting portion 5a, the 5b of air core coil 1, under 2 leads 2,3 and state that center line C1 is arranged side by side with paralleling, be placed on wire pattern 7a, the 7b, under this state, when connecting portion 5a, 5b were soldered on wire pattern 7a, the 7b respectively, scolding tin also flowed between 2 leads 2,3, made to connect to become firm.
And, the line that lead 23 has been described in the above-described embodiments directly be in the past wire diameter 1/2nd, but also can adopt than 1/2nd of the line footpath in past thinner leads.
The effect of invention
Hollow coil for high-frequency circuit of the present invention has: to 2 leads 2,3 that are arranged side by side Connecting portion 5a, 5b on the wire turn section 4 of twining and the end that is arranged on this wire turn section 4, Above-mentioned 2 leads 2,3 are connecting these 2 leads separately line and the above-mentioned wire turn section 4 of central point The state that parallels of center line under be wound, simultaneously, have and lead being positioned at above-mentioned 2 of end Carry out interconnected above-mentioned connecting portion 5a, 5b between the line 2,3. Therefore, can provide such one Kind of hollow coil for high-frequency circuit, namely its air core coil 1 is made of doublet cord, lead 2,3 Wire diameter A1 can be thinner than the wire diameter A2 of the lead 22 in past, so the wire turn section 4 of air core coil 1 Height, count and can reduce than in the past from the face of printed circuit board 6, be applicable to the requirement of slimming.
Moreover, because lead 2,3 wire diameter S1 are attenuated, so the elasticity of lead itself ( Reset force when moving) reduces than in the past, even in arrow Y1 direction wire turn section 4 is advanced slightly Line displacement also can produce distortion in the position of displacement at this, and the adjustment operation is carried out easily.
Moreover, owing to 2 leads 2, the 3rd, under the state of combining closely mutually, twine , so, the little air core coil of inductance error 1 can be provided, can provide long-term ageing to become simultaneously The hollow coil for high-frequency circuit that shape is little.
Moreover, because 2 leads 2,3 connecting portion 5a, 5b are to print being arranged side by side Be connected to wire pattern 7a, 7b under the state on wire pattern 7a, the 7b on the circuit board 6 On, so, when connecting portion 5a, 5b be welded on respectively wire pattern 7a, when 7b is upper, Scolding tin flow between 2 leads 2,3, and it is connected firmly.
Claims (3)
1, a kind of hollow coil for high-frequency circuit, it is characterized in that having: the connecting portion on wire turn portion that 2 leads that are arranged side by side are twined and the end that is arranged on this wire turn portion, above-mentioned 2 leads are wound under line and the state that the center line of above-mentioned wire turn portion parallels of central point separately connecting these 2 leads, simultaneously, have between above-mentioned 2 leads of end, carrying out interconnected above-mentioned connecting portion.
2, hollow coil for high-frequency circuit as claimed in claim 1 is characterized in that: above-mentioned 2 leads twine under the state of combining closely mutually.
3, hollow coil for high-frequency circuit as claimed in claim 1 or 2 is characterized in that: the above-mentioned connecting portion of above-mentioned 2 leads, be arranged side by side under the state on the wire pattern on the printed circuit board, and be connected on the above-mentioned wire pattern.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001275968A JP2003086427A (en) | 2001-09-12 | 2001-09-12 | Air-core coil for high-frequency circuit |
| JP275968/2001 | 2001-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405802A CN1405802A (en) | 2003-03-26 |
| CN1215497C true CN1215497C (en) | 2005-08-17 |
Family
ID=19100742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021316600A Expired - Fee Related CN1215497C (en) | 2001-09-12 | 2002-09-12 | Hollow coil for high-frequency circuit |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003086427A (en) |
| KR (1) | KR100457390B1 (en) |
| CN (1) | CN1215497C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008016488A1 (en) | 2008-03-31 | 2009-10-01 | Epcos Ag | Coil and method of making a coil |
-
2001
- 2001-09-12 JP JP2001275968A patent/JP2003086427A/en not_active Withdrawn
-
2002
- 2002-09-11 KR KR10-2002-0054850A patent/KR100457390B1/en not_active IP Right Cessation
- 2002-09-12 CN CNB021316600A patent/CN1215497C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR100457390B1 (en) | 2004-11-16 |
| CN1405802A (en) | 2003-03-26 |
| KR20030023518A (en) | 2003-03-19 |
| JP2003086427A (en) | 2003-03-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |