CN103178318A - Coaxial electrical transmission element - Google Patents
Coaxial electrical transmission element Download PDFInfo
- Publication number
- CN103178318A CN103178318A CN201210553481XA CN201210553481A CN103178318A CN 103178318 A CN103178318 A CN 103178318A CN 201210553481X A CN201210553481X A CN 201210553481XA CN 201210553481 A CN201210553481 A CN 201210553481A CN 103178318 A CN103178318 A CN 103178318A
- Authority
- CN
- China
- Prior art keywords
- insulating sleeve
- coaxial electrical
- electrical transfer
- outside
- described insulating
- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/06—Coaxial lines
Abstract
The invention relates to a coaxial electrical transmission element including an inner conductor having the transmission characteristics relying on frequency, an outer conductor surrounding the inner conductor in circumferential direction, and an insulating sleeve arranged between the inner and outer conductors. The insulating sleeve is made of electrically non-conducting plastic material, and an inner side of the sleeve is turned toward the inner conductor, and an outer side of the sleeve is turned toward the outer conductor. In order to improve the transmission element to be manufactured at a lower cost, the sleeve is formed as an injection molded part and patterned at the outer side and/or the inner side.
Description
Technical field
The present invention relates to a kind of coaxial electrical transfer element, it comprises: have the transmission characteristic of dependent Frequency inner wire, the outer conductor that surrounds inner wire on circumferential direction and be arranged in inner wire and outer conductor between insulating sleeve, wherein, insulating sleeve is by nonconducting synthetic material manufacturing and have the inboard that faces inner wire and the outside that faces outer conductor.
Background technology
This coaxial electrical transfer element is used for carry high frequency electrical signals, and its frequency can be for hundreds of megahertzes until about ten Gigahertzs.Especially the electrical transmission element can form passive high frequency filter, for example high pass filter or low pass filter.In a lot of situations, inner wire forms one or more lumped capacitances in the following way, that is, it has at least one with the track section of the diameter that increases, and connects with described track section with the track section of the diameter that dwindles.Inner wire forms signal line, and via this signal line carry high frequency electrical signals, and outer conductor forms ground path, this ground path with inner wire to external shield and prevent outside interference effect.
Be furnished with insulating sleeve between inner wire and outer conductor, this insulating sleeve is made by nonconducting synthetic material and is stoped being electrically connected between inner wire and outer conductor.This coaxial electrical transfer element is for example known with the form of high pass filter by EP 2 071 660 A1.
Usually by the synthetic material manufacturing, especially by the polytetrafluoroethylmaterial material manufacturing, process with cutting way by this polytetrafluoroethylmaterial material in known coaxial transmission element for insulating sleeve, thereby it has level and smooth surface on side and on its outside within it.The installation of inner sleeve is become easily on level and smooth surface and cut makes the following possibility that becomes, that is, the interior diameter of insulating sleeve and overall diameter and inner wire suitable with specification outer conductor.
Yet this coaxial electrical transfer element has proved that in practice it has not is inappreciable manufacturing cost.
Summary of the invention
Task of the present invention is the coaxial electrical transfer element of type under improving, thereby can make by cost more cheaply.
Solve thus according to the present invention in the coaxial electrical transfer element of the type that this task is mentioned in front, that is, insulating sleeve is designed to moulding, its inboard and/or outboard structure.
In coaxial electrical transfer element of the present invention, insulating sleeve is designed to moulding, that is to say that it makes with Shooting Technique.Thus, can reduce significantly the manufacturing cost of coaxial electrical transfer element.Unnecessary to the cut of insulating sleeve afterwards.Yet the manufacturing of carrying out with Shooting Technique has limited the selection that may be used for the synthetic material of insulating sleeve.Be applicable to the synthetic material of Shooting Technique different from the common polytetrafluoroethylmaterial material that uses aspect its dielectric constant.Needn't change inner wire and specification outer conductor for the impact of this differing dielectric constant of offsetting synthetic material that can injection moulding, the insulating sleeve that uses in coaxial electrical transfer element according to the present invention is within it on side and/or have structurized surface on its outside.According to insulating sleeve used in the present invention within it on side and/or different from known insulating sleeve on its outside, be not to construct smoothly, but it has the upper visible structure of macroscopic view, and this structure is with on the axial direction of insulating sleeve and/or the form of the recess that occurs successively on circumferential direction and protuberance and existing.What shown is: can make with the electrical characteristics of the coaxial electrical transfer element of the insulating sleeve made from Shooting Technique and electrical characteristics coupling with the coaxial electrical transfer element commonly used of the insulating sleeve of being made by polytetrafluoroethylmaterial material in due form by the structurized surface that insulating sleeve is provided.This has following advantage, that is, polytetrafluoroethylmaterial material can replace by common synthetic material that can injection moulding, and needn't change specification inner wire and/or outer conductor.Therefore, can use by the known inner wire of prior art and outer conductor in coaxial electrical transfer element according to the present invention, their specification needn't change.The use of the inboard of moulding form and/or the insulating sleeve of outboard structure can make the following possibility that becomes, that is, in the situation that use known inner wire and outer conductor to reduce significantly the manufacturing cost of coaxial electrical transfer element.
In order to simplify the installation according to coaxial electrical transfer element of the present invention, following is favourable, that is, the inboard of insulating sleeve has level and smooth surface and the outboard structure of insulating sleeve.Level and smooth inboard makes inner wire insert insulating sleeve and becomes easily, wherein, inner wire can range selector directly the recline inboard of insulating sleeve, ground, and the danger that does not exist insulating sleeve to block or tilt.Inboard opposite with structure, the outside of insulating sleeve be provided with a large amount of in the axial direction and/or the protuberance and the recess that occur successively on circumferential direction.
Preferably, insulating sleeve is on its outside and/or comprise a large amount of recesses on side within it, and described recess radially only extends on the fraction of the wall thickness of insulating sleeve.Therefore, recess does not form the penetrating part of insulating sleeve, thereby can not form discharge between inner wire and outer conductor.Therefore, insulating sleeve forms closed insulator between inner wire and outer conductor.
The degree of depth that for example is arranged in the recess on the outside of insulating sleeve advantageously be to the maximum insulating sleeve wall thickness 75%.
Preferably, insulating sleeve has recess on its outside, the radially extension on minimum 20% and maximum 60% ground on the wall thickness of insulating sleeve of described recess.What shown is: can be achieved as follows electrical characteristics by this recess for the coaxial transmission element is provided, in fact the electrical characteristics with the coaxial electrical transfer element with and insulating sleeve cut that make by polytetrafluoroethylmaterial material are identical although used these electrical characteristics of insulating sleeve that are designed to moulding.
In favourable form of implementation of the present invention, insulating sleeve is by polystyrene material or by the polymer blend manufacturing.These synthetic materials can utilize common Shooting Technique to process in simple mode, and wherein, they obtain their structurized surface by Shooting Technique, and the reprocessing that need not to cut.
Following is favourable, that is, insulating sleeve is constructed texture on its outside, and this texture repeats to the spacing of maximum 1.5mm with 0.1mm at least.This spacing is associated with the center of directly adjacent to each other texture in this case.Show surprisingly: by the structurized surface of repetition texture (spacing of texture is that 0.1mm arrives maximum 1.5mm at least) form is provided, the insulating sleeve of being made by injected plastics material can be provided, and this insulating sleeve can substitute the insulating sleeve of being made by polytetrafluoroethylmaterial material without problems in the coaxial electrical transfer element.Especially in fact the insulating sleeve that utilizes this design can realize the transmission characteristic of the same dependent Frequency of coaxial electrical transfer element with level and smooth inboard and the level and smooth outside as utilizing by the insulating sleeve of polytetrafluoroethylmaterial material manufacturing.
In favourable form of implementation of the present invention, the outside of insulating sleeve has the cannelure that extends in a large number on the circumference of insulating sleeve.Cannelure is design in the same manner preferably.Especially can design as follows, that is, construct cannelure with taking the shape of the letter U.Following in this case is favourable, that is, the side of cannelure is orientated with inclining towards each other, thereby cannelure is in the radial direction to external expansion.This makes when injection moulding the insulating sleeve demoulding is become easy.
The axial spacing of cannelure directly adjacent to each other advantageously is three times of the degree of depth of cannelure to the maximum.In this case, the cannelure of two direct neighbors is interpreted as axial spacing from the spacing of center to center.
The degree of depth of cannelure in preferred design of the present invention be insulating sleeve wall thickness 20% to 50%.
Alternative in a large amount of cannelures are provided, extend along the outside of insulating sleeve twist in form of implementation middle slot of the present invention.The axial spacing of the spire of two direct neighbors of groove preferably is three times of groove depth to the maximum.In this case, the groove spire of two direct neighbors is interpreted as axial spacing from the spacing of center to center.
Also can design as followsly, that is, insulating sleeve has in the axial direction the cannelure that extends.The cannelure preferred arrangements is on the outside of insulating sleeve.
Cannelure advantageously extends on the whole length of insulating sleeve.
In favourable form of implementation, a large amount of cannelures are arranged on the circumference of insulating sleeve evenly distributedly.
Preferably, all cannelures design in the same manner.
Description of drawings
Below in conjunction with accompanying drawing, the preferred embodiment of the present invention is described in detail.Wherein:
Fig. 1 shows the partial cross sectional views according to coaxial electrical transfer element of the present invention with inner wire, insulating sleeve and outer conductor;
Fig. 2 shows the diagram of the amplification of the details Y in Fig. 1;
Fig. 3 shows the longitudinal section view of the insulating sleeve of the coaxial electrical transfer element in Fig. 1;
Fig. 4 shows the diagram of the amplification of the details Z in Fig. 3.
Embodiment
Schematically show the longitudinal section according to coaxial electrical transfer element of the present invention in Fig. 1, this transfer element is integrally with Reference numeral 10 mark and have inner wire 12 and outer conductor 14.In addition, transfer element 10 comprises the insulating sleeve 16 that is arranged between inner wire 12 and outer conductor 14.Inner wire 12 structure signal lines can transmit high frequency electrical signal in gigahertz range via this signal line.Outer conductor 14 surrounds inner wire 12 and structure ground path on circumferential direction, this ground path shielding inner wire 12.Known and therefore unshowned connection element can be connected to coaxial electrical transfer element 10 on other electric members in order to realize better general view in the accompanying drawings by means of itself.Connection element for example can be constructed with the form of socket connection.
Coaxial electrical transfer element 10 has the transmission characteristic of the frequency of depending on.In an illustrated embodiment, coaxial electrical transfer element 10 is configured to coaxial high pass filter, its have very strong decay in relatively low-frequency first frequency scope and then first frequency scope have relatively high-frequency second frequency scope in have less decay.Therefore, in fact the signal of telecommunication of first frequency scope can be weakened, and the signal of telecommunication of second frequency scope can transmit with very little decay via coaxial electrical transfer element 10.
In addition, the transmission characteristic of coaxial electrical transfer element 10 is determined by the geometry designs of inner wire 12.It has the first track section 18 with relatively little diameter, and this first track section connects respectively the second track section 20 with relatively large diameter.Transitional region between the first track section 18 and the second track section 20 illustrates in Fig. 2 enlargedly.
Insulating sleeve 16 has level and smooth inboard 22, and this medial surface is towards inner wire 12 and its second track section 20 of inner wire 12 use this inboard that directly reclines.Opposite with inboard 22, the outside that faces outer conductor 14 24 structurings of insulating sleeve 16.The cannelures 26 that the outside 24 carryings are extended on the whole circumference of insulating sleeve 16 respectively in a large number, its groove depth T be approximately insulating sleeve 16 wall thickness W 1/3rd.In an illustrated embodiment, groove depth T is approximately 0.3mm and wall thickness W is approximately 1mm.
The cannelure 26 of constructing that takes the shape of the letter U is respectively constructed texture on the outside 24 of insulating sleeve 16, this texture repeats in the axial direction with constant spacing A.Spacing A is the twice of groove depth, i.e. 0.6mm in an illustrated embodiment.
Insulating sleeve 16 utilizes Shooting Technique manufacturing by polystyrene material, that is to say that cannelure 26 is molded in the outside 24 during pouring technology, and does not need cut that insulating sleeve 16 is added.Alternative in polystyrene material, for the injection moulding of insulating sleeve 16 also can be used polymer blend.
In the zone of the second track section 20, inner wire 12 is in conjunction with outer conductor 14 and be arranged in wherein insulating sleeve 16 structure lumped capacitances.In this case, the insulating sleeve 16 that is arranged between the second track section 20 and outer conductor 14 is dielectric in conjunction with the air effect that is in cannelure 26, and this dielectric has been determined the electrical characteristics of lumped capacitance basically jointly.Electrical characteristics depend on the dielectric constant of synthetic material of insulating sleeve 16 and the dielectric constant of the air in cannelure 26.By the structurized outside 24 is provided, namely in an illustrated embodiment by cannelure 26 is provided, can realize the electrical characteristics of lumped capacitance, its in fact with can utilize the electrical characteristics that realize with the insulating sleeve in level and smooth inboard and the outside by the polytetrafluoroethylmaterial material manufacturing identical.Yet, use the insulating sleeve 16 that is configured to moulding to make the manufacturing cost that reduces significantly coaxial electrical transfer element 10 become possibility.Replacement is used the insulating sleeve 16 of outboard structure by the insulating sleeve that needs cut of polytetrafluoroethylmaterial material manufacturing, and it is made with Shooting Technique and does not carry out afterwards cut, and does not change specification inner wire 12 or outer conductor 14.The electrical characteristics of insulating sleeve 16 with undertaken by the structure of selecting the outside 24 by the adaptive of the insulating sleeve of polytetrafluoroethylmaterial material manufacturing.The selection of the structure especially selective dependency of its specification is carried out in the corresponding application target of insulating sleeve 16.
Therefore, coaxial electrical transfer element 10 is characterised in that manufacturing with low cost, wherein, uses common at unaltered inner wire 12 on its specification and outer conductor 14 and in conjunction with the insulating sleeve 16 that is provided with structure during with Shooting Technique manufacturing and injection moulding on the outside.
Claims (13)
1. coaxial electrical transfer element (10) comprising: inner wire (12), and it has the transmission characteristic of dependent Frequency; Outer conductor (14), it surrounds described inner wire (12) on circumferential direction; And insulating sleeve (16), it is arranged between described inner wire (12) and described outer conductor (14), wherein, described insulating sleeve (16) is by nonconducting synthetic material manufacturing and have the inboard (22) that faces described inner wire (12) and the outside (24) that faces described outer conductor (14), it is characterized in that, described insulating sleeve (16) is moulding and side (22) is upper and/or upper by structuring in its outside (24) within it.
2. coaxial electrical transfer element according to claim 1, is characterized in that, the inboard (22) of described insulating sleeve (16) have level and smooth surface and the outside (24) of described insulating sleeve (16) by structuring.
3. coaxial electrical transfer element according to claim 1, it is characterized in that, described insulating sleeve (16) side (22) within it is upper and/or have a large amount of recesses (26) on its outside (24), and described recess radially only extends on the fraction of the wall thickness (W) of described insulating sleeve (16).
4. coaxial electrical transfer element according to claim 3, is characterized in that, the degree of depth (T) of described recess (26) be to the maximum described insulating sleeve (16) wall thickness (W) 75%.
5. 2,3 or 4 described coaxial electrical transfer elements according to claim 1,, it is characterized in that, described insulating sleeve (16) has recess (26) on its outside (24), described recess radially extends at the wall thickness (W) of described insulating sleeve (16) upper minimum 20% and maximum 60% ground.
6. according to claim 1,2,3 or 4 described coaxial electrical transfer elements, it is characterized in that, described insulating sleeve (16) is by polystyrene material or polymer blend manufacturing.
7. according to claim 1,2,3 or 4 described coaxial electrical transfer elements, it is characterized in that, described insulating sleeve (16) is at its outside (24) upper structure texture, this texture repeats to the spacing of maximum 1.5mm with 0.1mm at least.
8. according to claim 1,2,3 or 4 described coaxial electrical transfer elements, it is characterized in that, the outside (24) of described insulating sleeve (16) has the cannelure (26) that extends in a large number on the circumference of described insulating sleeve (16).
9. coaxial electrical transfer element according to claim 8, is characterized in that, described cannelure (26) designs in the same manner.
10. coaxial electrical transfer element according to claim 8, is characterized in that, the axial spacing (A) of cannelure directly adjacent to each other (26) is three times of the degree of depth (T) of described cannelure to the maximum.
11. coaxial electrical transfer element according to claim 8 is characterized in that, the degree of depth (T) of described cannelure (26) be described insulating sleeve (16) wall thickness (W) 20% to 50%.
12. according to claim 1,2,3 or 4 described coaxial electrical transfer elements, it is characterized in that, groove extends along the outside (24) of described insulating sleeve (16) twist.
13. according to claim 1,2,3 or 4 described coaxial electrical transfer elements, it is characterized in that, described insulating sleeve (16) has a large amount of cannelures that extend in the axial direction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110056710 DE102011056710A1 (en) | 2011-12-20 | 2011-12-20 | Coaxial electrical transmission element |
| DE102011056710.0 | 2011-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103178318A true CN103178318A (en) | 2013-06-26 |
| CN103178318B CN103178318B (en) | 2017-04-12 |
Family
ID=47216154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210553481.XA Expired - Fee Related CN103178318B (en) | 2011-12-20 | 2012-12-19 | Coaxial electrical transmission element |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2608312B1 (en) |
| CN (1) | CN103178318B (en) |
| DE (1) | DE102011056710A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070977A (en) * | 2015-07-28 | 2015-11-18 | 西安空间无线电技术研究所 | Structure for improving micro discharge threshold of coaxial transmission line |
| CN105931770A (en) * | 2016-04-28 | 2016-09-07 | 武汉纺织大学 | Low-pass insulation sleeve and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2421173A1 (en) * | 1974-05-02 | 1975-11-20 | Kabel Metallwerke Ghh | HF coaxial cable with seam welded outer sheath - and solid insulation having expansion grooves, allows relief of pressure on sheath |
| DE202008004431U1 (en) * | 2008-03-31 | 2008-05-29 | Gustav Hensel Gmbh & Co. Kg | Impedance bond |
| CN101490899A (en) * | 2006-07-20 | 2009-07-22 | 凯瑟雷恩工厂两合公司 | High frequency filter having coaxial structure |
| CN101931113A (en) * | 2009-06-25 | 2010-12-29 | 泰科电子(上海)有限公司 | Low-pass filter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB505761A (en) * | 1937-10-14 | 1939-05-15 | John Cuthbert Swallow | Improvements in and relating to the manufacture of electric cables |
| DE842806C (en) * | 1946-10-21 | 1952-06-30 | Lignes Telegraph Telephon | Device for applying insulating parts, e.g. B. insulating washers, on electrical conductors |
| US4641110A (en) * | 1984-06-13 | 1987-02-03 | Adams-Russell Company, Inc. | Shielded radio frequency transmission cable having propagation constant enhancing means |
| SE514080C2 (en) * | 1999-04-16 | 2000-12-18 | Ericsson Telefon Ab L M | Filter |
| DE102007061413A1 (en) | 2007-12-11 | 2009-06-25 | Telegärtner Karl Gärtner GmbH | High Pass Filter |
-
2011
- 2011-12-20 DE DE201110056710 patent/DE102011056710A1/en not_active Withdrawn
-
2012
- 2012-11-26 EP EP12194260.1A patent/EP2608312B1/en not_active Not-in-force
- 2012-12-19 CN CN201210553481.XA patent/CN103178318B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2421173A1 (en) * | 1974-05-02 | 1975-11-20 | Kabel Metallwerke Ghh | HF coaxial cable with seam welded outer sheath - and solid insulation having expansion grooves, allows relief of pressure on sheath |
| CN101490899A (en) * | 2006-07-20 | 2009-07-22 | 凯瑟雷恩工厂两合公司 | High frequency filter having coaxial structure |
| DE202008004431U1 (en) * | 2008-03-31 | 2008-05-29 | Gustav Hensel Gmbh & Co. Kg | Impedance bond |
| CN101931113A (en) * | 2009-06-25 | 2010-12-29 | 泰科电子(上海)有限公司 | Low-pass filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070977A (en) * | 2015-07-28 | 2015-11-18 | 西安空间无线电技术研究所 | Structure for improving micro discharge threshold of coaxial transmission line |
| CN105070977B (en) * | 2015-07-28 | 2017-11-07 | 西安空间无线电技术研究所 | A kind of structure for improving coaxial type transmission line micro-discharge threshold |
| CN105931770A (en) * | 2016-04-28 | 2016-09-07 | 武汉纺织大学 | Low-pass insulation sleeve and preparation method thereof |
| CN105931770B (en) * | 2016-04-28 | 2017-05-17 | 武汉纺织大学 | Low-pass insulation sleeve and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2608312A1 (en) | 2013-06-26 |
| CN103178318B (en) | 2017-04-12 |
| DE102011056710A1 (en) | 2013-06-20 |
| EP2608312B1 (en) | 2017-04-26 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20181219 |
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| CF01 | Termination of patent right due to non-payment of annual fee |