CN202110880U - High-frequency conduction absorbing cable - Google Patents
High-frequency conduction absorbing cable Download PDFInfo
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- CN202110880U CN202110880U CN2010206448790U CN201020644879U CN202110880U CN 202110880 U CN202110880 U CN 202110880U CN 2010206448790 U CN2010206448790 U CN 2010206448790U CN 201020644879 U CN201020644879 U CN 201020644879U CN 202110880 U CN202110880 U CN 202110880U
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- high frequency
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- cable
- disturbance signal
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Abstract
The utility model discloses a high-frequency conduction absorbing cable which fulfills the function of absorbing and conducting a high-frequency (higher than 1 MHz) electromagnetic disturbance signal and is suitable for electronic and electrical equipment which generates high-frequency disturbance. A high-frequency absorbing material is added between a conductor wire core and an insulating protective layer and is closely covered on the conductor wire core so as to form the high-frequency conduction absorbing cable which is used for absorbing a radio frequency disturbance signal irradiated along a lead wire. The electromagnetic energy of the radio frequency disturbance signal is converted to the heat energy in a high-frequency absorbing material and consumed. The high-frequency conduction absorbing cable has the advantages that firstly, the high-frequency absorbing material is closely adhered to the conductor wire core so that the high-frequency disturbance signal transmitted along the lead can be effectively inhibited; secondly, a clearance and a gap do not exist, so the leakage problem of the radio frequency disturbance signal is solved; thirdly, distributed inductance can be reduced to the largest extent, so that the possibility that low-frequency resonance occurs is reduced; fourthly, a flexible material is used, so that wires can be distributed in a smooth and bending way without leakage corners; and fifthly, the structure is simple, the use is convenient, the using method of magnetic balls that magnetic balls need to be sleeved one by one is avoided, and a wire can be used for solving the problem.
Description
Affiliated technical field
It is to utilize the high-frequency electromagnetic absorbing material to absorb the high-frequency electromagnetic harassing and wrecking signal along the transmission line radiation that the conduction of this high frequency absorbs cable, in the electronic electric equipment circuit, realizes suppressing the function of conduction high-frequency electromagnetic harassing and wrecking, belongs to the electromagnetic compatibility technology field.
Background technology
When high-frequency electromagnetic harassing and wrecking signal in transmission line when lead transmit, a part of signal along conductive line surfaces to space radiation, the generation radio frequency
[1]Harassing and wrecking.The relevant world and national standard require the harassing and wrecking of conduction high frequency should not surpass the limit value of stipulating, and many type switching power electronic electric equipments can not satisfy the requirement of standard.
At present, mainly use magnetic bead to be enclosed within and suppress the high frequency harassing and wrecking on the transmission line.Use the method for magnetic bead to have following problem:
(1) there are air and/or insulating barrier gap between magnetic bead and lead, cause magnetic bead low, exist radio noise can pass through the gap to extraradial problem to the radio noise absorption efficiency;
(2) there is the socket gap between magnetic bead and magnetic bead, has the problem of radio environment signal leakage;
(3) produce low-frequency resonant, possibly cause low frequency disturbance to strengthen sometimes behind the use magnetic bead;
(4) magnetic bead is the solid that the magnetic sintering forms, and should not bend, and causes the transmission line difficult wiring.
In order to address the above problem, the present invention has designed a kind of high frequency conduction and has absorbed cable, utilizes the high frequency absorption material that the radio environment signal losses is fallen; Between high frequency absorption material and lead fit in no gap, eliminated radio environment signal leakage phenomenon, reduced the possibility that produces low-frequency resonant; Use flexible material, cable can smooth curved, conveniently wiring.
Summary of the invention
Between transmission line conductors core and insulating protective layer, add the high frequency absorption material, the high frequency absorption material closely is coated on the conductor thread core, forms the high frequency absorption cable, can absorb the radio-frequency component in the conduction.
Description of drawings
The conduction of Fig. 1 high frequency absorbs construction of cable figure, and wherein 1 is insulating protective layer, and 2 is the high frequency absorption material, and 3 is the round conductor core.
Fig. 2 high frequency conduction absorbs the cable equivalent electric circuit, and wherein 4 go into for electric current, and 5 is resistance R, and 6 is inductance L, and 7 go out for electric current.
The conduction of Fig. 3 high frequency absorbs shielding construction of cable figure, and wherein 8 is outer protective sleeve, and 9 is metal screen layer, and 1 is insulating protective layer, and 2 is the high frequency absorption material, and 3 is the round conductor core.
Embodiment
The basic structure that the high frequency conduction absorbs cable is: be made up of conductor thread core, high frequency absorption material, three kinds of materials of insulating protective layer.With the conductor thread core is the center, and the high frequency absorption material is compressed on the conductor thread core, perhaps with after the heatproof binding agent mixes is coated on the conductor thread core, and insulating protective layer is coated on the high frequency absorption material, forms the high frequency conduction and absorbs cable, and structure chart is seen Fig. 1.
Operation principle:
When high frequency harassing and wrecking signal transmitted along conductor, a part formed radio environment along conductive surface to external radiation; The high frequency absorption material is close to the radio environment signal of conductor thread core surface absorbed radiation, and the electromagnetic energy of radio environment signal converts heat energy in the high frequency absorption material, and thermal energy consumption is in the high frequency absorption material.
Equivalent circuit Fig. 2.Identical with the operation principle of using magnetic bead, be equivalent to a resistance and an inductance series connection
[2], resistance value and inductance value are all with frequency change.
The high frequency conduction absorbs the cable characteristics:
(1) the high frequency absorption material fits tightly conductor thread core, can effectively suppress the high frequency harassing and wrecking signal along the lead transmission;
(2) there are not gap and space, eliminated radio environment signal leakage problem;
(3) can at utmost reduce distributed inductance, reduce the possibility that low-frequency resonant occurs;
(4) use flexible material, can smooth curved connect up, the turning do not occur leaking;
(5) simple in structure, the convenient use need not be connected in series as using magnetic bead one by one, and single line is dealt with problems.
The conductor thread core characteristic:
(1) conductor thread core act on transmission current the time radiated radio frequency (RF) harassing and wrecking signals.Conductor thread core normally is made up of metal material, and conductor thread core commonly used is metal alloys such as copper, aluminium, iron.
(2) in order to strengthen skin effect
[3], select the circular solids lead during little electric current for use, select the circular hollow lead for use during big electric current, conductive line surfaces is through coarse processing;
(3) sectional area of conductor thread core depends on the size of current of passing through.Electric current is big, and sectional area is big; Electric current is little, and sectional area is little.
The high frequency absorption material characteristics:
(1) the high frequency absorption material is to be mixed with the heatproof binding agent by soft magnetic powder to constitute, and closely is coated on the conductor thread core equably.
(2) effect of high frequency absorption material is to absorb the radio environment signal, and Main Ingredients and Appearance is a soft magnetic material
[4]Thickness is big more, and assimilation effect is good more, is difficult for saturated more.Different soft magnetic materials has different optimal absorption frequency ranges, and magnetic permeability is high more usually, and the lower-frequency limit of inhibition is low more.Select the material that magnetic permeability is big, saturation magnetization is high, like ferromagnetic oxide powder, carbonyl iron dust etc.
(3) to low-frequency range (referring to less than 1MHz here), the absorbing material loss is very little, although the high frequency absorption material has higher magnetic permeability; Because conductor thread core is shape linearly, inductance value is less, and the conductor thread core internal resistance is also very little, and the whole piece cable is the lead of a small inductor small resistor.
(4) to high band (referring to greater than 1MHz here), along with frequency raises, the magnetic permeability of high frequency absorption material reduces, and inductance value reduces, and the loss of high frequency absorption material increases, and the alternating-current resistance composition increases, and can in quite wide frequency range, keep higher impedance.The RF energy that gets into the high frequency absorption material is absorbed and converts to thermal energy consumption and falls, thereby realizes the high-frequency suppressing effect.
(5) binding agent is selected not curing materials of soft heatproof for use, like rubber-based glue, soft heatproof plastics.
The insulating protective layer characteristic:
(1) effect of insulating protective layer is to electric insulation, protects the high frequency absorption material simultaneously.
(2) according to the purposes of high frequency conduction absorption cable, select different wire cable insulating materials.
The high frequency conduction absorbs the cable mutation:
Structure with Fig. 1 is the basis, based on the actual application requirements, can form multiple cable mutation, and is as shown in Figure 3:
(1) in order to shield the radio environment that from the high frequency absorption material, transmits, also invade conductor thread core for electromagnetic disturbance in the isolation environment simultaneously, can add metal screen layer at insulating barrier outside cover, constitute the high frequency absorption shielded type cable.
(2), also can overlap and add outer protective sleeve for further guardwire.
Method for using:
(1) conduction of this high frequency absorbs the electronic electric equipment that cable can be used for producing the high frequency harassing and wrecking, as using the electrodeless lamp of Switching Power Supply, LED lamp, microprocessor signals transmission line etc.;
(2) conductor thread core link transmission current two ends.Select the high frequency conduction to absorb the sectional area of cable conductor core according to the transmission current size.Electric current is big, and sectional area is big; Electric current is little, and sectional area is little.
(3) harass the kind that frequency range is selected the high frequency absorption material according to high frequency.Carbonyl iron dust like iron magnesium alloy, iron-nickel alloy or different structure.
(4) harass the length that intensity is confirmed cable according to high frequency.Harassing and wrecking are strong, and length is big; Harass for a short time, length is little.
(5) select different heatproof binding agents according to the conductor thread core heating temp.
(6) when radio environment occurring and leak, or the environment electromagnetics radiation effect should use metal screen layer when can not ignore.
Like metal net or metal sleeve.Metal screen layer preferably can ground connection.
List of references:
[1]Wikipedia.Radio?frequency[EB/OL].http://en.wikipedia.org/wiki/Radio_frequency，2010-11-26/2010-12-01.
[2] Baidu's encyclopaedia. magnetic bead [EB/OL] .http: //baike.***.com/view/261693.htm, 2010-08-17/2010-12-01.
[3]Wikipedia.Skin?effect[EB/OL].http://en.wikipedia.org/wiki/Skin_effect，2010-11-28/201012-01.
[4] Baidu's encyclopaedia. soft magnetic material [EB/OL] .http: //baike.***.com/view/30113.htm, 2010-08-26/2010-12-01.
Claims (1)
1. a high frequency conduction absorbs cable, it is characterized in that, between conductor thread core and insulating protective layer, add the high frequency absorption material, the high frequency absorption material closely is coated on the conductor thread core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206448790U CN202110880U (en) | 2010-12-07 | 2010-12-07 | High-frequency conduction absorbing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206448790U CN202110880U (en) | 2010-12-07 | 2010-12-07 | High-frequency conduction absorbing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110880U true CN202110880U (en) | 2012-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206448790U Expired - Fee Related CN202110880U (en) | 2010-12-07 | 2010-12-07 | High-frequency conduction absorbing cable |
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| Country | Link |
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| CN (1) | CN202110880U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529136A (en) * | 2016-01-05 | 2016-04-27 | 南京航空航天大学 | Common mode choke with current noise dissipation function |
| CN105702374A (en) * | 2016-02-29 | 2016-06-22 | 湖州凯博电子线缆有限公司 | Anti-interference network cable |
| CN106683760A (en) * | 2017-02-16 | 2017-05-17 | 广州市智昌电子科技有限公司 | Insulated wire coated with magnetic rubber in insulated manner |
-
2010
- 2010-12-07 CN CN2010206448790U patent/CN202110880U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529136A (en) * | 2016-01-05 | 2016-04-27 | 南京航空航天大学 | Common mode choke with current noise dissipation function |
| CN105702374A (en) * | 2016-02-29 | 2016-06-22 | 湖州凯博电子线缆有限公司 | Anti-interference network cable |
| CN106683760A (en) * | 2017-02-16 | 2017-05-17 | 广州市智昌电子科技有限公司 | Insulated wire coated with magnetic rubber in insulated manner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |