CN104078208A - Radio-frequency transformer - Google Patents
Radio-frequency transformer Download PDFInfo
- Publication number
- CN104078208A CN104078208A CN201410309547.XA CN201410309547A CN104078208A CN 104078208 A CN104078208 A CN 104078208A CN 201410309547 A CN201410309547 A CN 201410309547A CN 104078208 A CN104078208 A CN 104078208A
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- CN
- China
- Prior art keywords
- coil
- magnetic core
- radio freqnency
- freqnency transformer
- radio
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- 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.)
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Abstract
The invention discloses a radio-frequency transformer. The radio-frequency transformer comprises a pedestal, a coil and a magnetic core, the coil winds the inside of the magnetic core, the magnetic core is fixed on the pedestal, and a pin of the radio-frequency transformer directly extends out of the end of the coil. The radio-frequency transformer meets the size miniaturization demands of military electronic components.
Description
Technical field
The present invention relates to a kind of electronic device, particularly relate to a kind of radio freqnency transformer.
Background technology
Radio freqnency transformer is widely used in various small-power electronic circuits, to realize the functions such as impedance matching, DC-isolation, common-mode inhibition, generally comprising two groups of magnetic-coupled coils.
The specification of domestic and international radio freqnency transformer and shape have a variety of, but the size of traditional radio freqnency transformer is too large, does not also reach the requirement in military electronic component, thereby have limited its scope of application.
Summary of the invention
Based on this, be necessary to provide a kind of radio freqnency transformer of compact in size.
A radio freqnency transformer, comprises base, coil, magnetic core, and described coil winding is inner at described magnetic core, and described magnetic core is fixed on described base, and the end of described coil is directly drawn moulding as the pin of described radio freqnency transformer.
In an embodiment, described magnetic core and base are bonded into one by adhesive glue therein.
In an embodiment, it is inner that described coil adopts the mode of parallel winding of multiple coils to be wound on described magnetic core therein.
In an embodiment, the magnetic permeability of described magnetic core is 1000～2000 therein.
In an embodiment, described base is ceramic base therein.
In an embodiment, described magnetic core is diplopore magnetic core therein, and described coil carries out coiling through diplopore.
In an embodiment, described coil comprises primary coil and secondary coil therein, and the pin number that described primary coil is drawn is 2, and the pin number that described secondary coil is drawn is 3.
In an embodiment, the length of described base is respectively 4.0 millimeters, 4.0 millimeters, 0.6 millimeter therein.
In an embodiment, the length of described radio freqnency transformer is respectively 4.0 millimeters, 4.0 millimeters, 3.0 millimeters therein.
Above-mentioned radio freqnency transformer adopts the combining structure mode of magnetic core and base, and the end of described coil is directly drawn moulding as the pin of institute's radio freqnency transformer, saved like this assembling space of radio freqnency transformer to reach the compact in size requirement in military electronic component.
Accompanying drawing explanation
Fig. 1 is the contour structures top view of an embodiment radio freqnency transformer;
Fig. 2 is the contour structures end view of radio freqnency transformer shown in Fig. 1;
Fig. 3 is the cut-away view of radio freqnency transformer shown in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Please refer to Fig. 1 to Fig. 2, be respectively vertical view and the end view of contour structures of the radio freqnency transformer of one embodiment of the invention.
The radio freqnency transformer of the present embodiment comprises base 110, magnetic core 120, coil 130, adhesive glue 140.Wherein, coil 130 is wrapped in magnetic core 120 inside, and magnetic core 120 is fixed on base 110.
The size of base 110 is: long 4.0 millimeters, wide 4.0 millimeters, high 0.6 millimeter.Base 110 adopts ceramic materials, little to guarantee its temperature variant coefficient, and the high-temperature resistant of base reaches 180 degrees Celsius in addition, meets the requirement of military electronic component.
Magnetic core 120 is diplopore magnetic core.Diplopore magnetic core is generally often used in cable TV rf broadband transmitted in both directions technology and satellite communication technology field.In the present embodiment, magnetic core 120 adopts ferrite high temperature sintering technology to burn till, and adds metal material when moulding, makes it to have high stability and low-loss advantage, and can be high temperature resistant.In addition, the magnetic permeability of magnetic core 120 is 1000～2000.
Coil 130 carries out coiling through the diplopore of magnetic core 120, and the end of coil 130 is directly drawn moulding as the pin of described radio freqnency transformer.
In the present embodiment, coil 130 comprises primary coil and secondary coil, and the pin number that described primary coil is drawn is 2, and the pin number that described secondary coil is drawn is 3.The progression that is appreciated that coil can also be multistage, is not construed as limiting here.
In addition, it is inner that coil 120 adopts the mode of parallel winding of multiple coils to be wound on described magnetic core, can reduce like this leakage field phenomenon of transformer.Coil 120 has all passed through dipping lacquer processing, through hot setting, forms protective layer, thereby guarantees that well product is not damp, be stale-proof.In the present embodiment, coil 120 is high temperature enamel covered wire, high temperature resistantly reaches 180 ℃, through design, produce and test after, meet the military temperature requirement of radio freqnency transformer.
Adhesive glue 140 is for being bonded into one magnetic core and base by adhesive glue.
In the present embodiment, adhesive glue 140 materials are uv-hardening resin (UV Curable Resin), are appreciated that can also be thermosetting resin in other embodiments.
Incorporated by reference to Fig. 3, it is the cut-away view of network transformer shown in Fig. 1.
The pin number that primary coil 132 and secondary coil 134 are drawn is respectively 2 and 3.The pin-pitch that wherein primary coil 132 is drawn is 2.54 millimeters, and the pin-pitch that secondary coil 134 is drawn is 1.27 millimeters.The package width of each pin is 0.71 millimeter.
The overall dimensions of this radio freqnency transformer is: length is respectively 4.0 millimeters, 4.0 millimeters, 3.0 millimeters.
Above-mentioned radio freqnency transformer adopts the combining structure mode of magnetic core and base, and the end of described coil is directly drawn moulding as the pin of institute's radio freqnency transformer, saved like this assembling space of radio freqnency transformer to reach the compact in size requirement in military electronic component.
The present invention, according to the requirement of product miniaturized application, carries out Design and optimization and adjustment from aspects such as structure, material and techniques, realizes the requirement of product miniaturized application.The present invention has realized that radio freqnency transformer operating frequency is high, frequency of utilization wide ranges, the low requirement of loss, strengthened the reliability of product simultaneously, the working temperature of above-mentioned radio freqnency transformer can reach military requirement the scope of-55 ℃～130 ℃, meets the test requirements document of GJB360B.The present invention is easy to operate, is easy to realize batch production.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (9)
1. a radio freqnency transformer, is characterized in that, comprises base, coil, magnetic core, and described coil winding is inner at described magnetic core, and described magnetic core is fixed on described base, and the end of described coil is directly drawn moulding as the pin of described radio freqnency transformer.
2. radio freqnency transformer according to claim 1, is characterized in that, described magnetic core and base are bonded into one by adhesive glue.
3. radio freqnency transformer according to claim 1, is characterized in that, it is inner that described coil adopts the mode of parallel winding of multiple coils to be wound on described magnetic core.
4. radio freqnency transformer according to claim 1, is characterized in that, the magnetic permeability of described magnetic core is 1000～2000.
5. Wound-rotor type radio freqnency transformer according to claim 1, is characterized in that, described base is ceramic base.
6. radio freqnency transformer according to claim 1, is characterized in that, described magnetic core is diplopore magnetic core, and described coil carries out coiling through diplopore.
7. radio freqnency transformer according to claim 1, is characterized in that, described coil comprises primary coil and secondary coil, and the pin number that described primary coil is drawn is 2, and the pin number that described secondary coil is drawn is 3.
8. according to the radio freqnency transformer described in claim 1～7 any one, it is characterized in that, the length of described base is respectively 4.0 millimeters, 4.0 millimeters, 0.6 millimeter.
9. radio freqnency transformer according to claim 8, is characterized in that, the length of described radio freqnency transformer is respectively 4.0 millimeters, 4.0 millimeters, 3.0 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309547.XA CN104078208A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410309547.XA CN104078208A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104078208A true CN104078208A (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410309547.XA Pending CN104078208A (en) | 2014-06-30 | 2014-06-30 | Radio-frequency transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN104078208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206395A (en) * | 2015-10-12 | 2015-12-30 | 深圳振华富电子有限公司 | Radio-frequency transformer |
| CN107039157A (en) * | 2017-03-31 | 2017-08-11 | 浙江埃能德电气有限公司 | radio-frequency coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62239505A (en) * | 1986-04-11 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Transformer |
| US20050057334A1 (en) * | 2003-08-21 | 2005-03-17 | Masaki Kitagawa | Chip coil and printed circuit board for the same |
| CN1770332A (en) * | 2004-09-21 | 2006-05-10 | 美商·帕斯脉冲工程有限公司 | Simplified surface-mount devices and methods |
| CN103457010A (en) * | 2013-10-08 | 2013-12-18 | 东莞铭普光磁股份有限公司 | Integral patch type packing structure applied to radio frequency magnetic device |
| CN204029568U (en) * | 2014-06-30 | 2014-12-17 | 深圳振华富电子有限公司 | Radio freqnency transformer |
-
2014
- 2014-06-30 CN CN201410309547.XA patent/CN104078208A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62239505A (en) * | 1986-04-11 | 1987-10-20 | Matsushita Electric Ind Co Ltd | Transformer |
| US20050057334A1 (en) * | 2003-08-21 | 2005-03-17 | Masaki Kitagawa | Chip coil and printed circuit board for the same |
| CN1770332A (en) * | 2004-09-21 | 2006-05-10 | 美商·帕斯脉冲工程有限公司 | Simplified surface-mount devices and methods |
| CN103457010A (en) * | 2013-10-08 | 2013-12-18 | 东莞铭普光磁股份有限公司 | Integral patch type packing structure applied to radio frequency magnetic device |
| CN204029568U (en) * | 2014-06-30 | 2014-12-17 | 深圳振华富电子有限公司 | Radio freqnency transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105206395A (en) * | 2015-10-12 | 2015-12-30 | 深圳振华富电子有限公司 | Radio-frequency transformer |
| CN107039157A (en) * | 2017-03-31 | 2017-08-11 | 浙江埃能德电气有限公司 | radio-frequency coil |
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| C10 | Entry into substantive examination | ||
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Application publication date: 20141001 |