CN202076395U - Leakage coaxial cable - Google Patents
Leakage coaxial cable Download PDFInfo
- Publication number
- CN202076395U CN202076395U CN2011201926254U CN201120192625U CN202076395U CN 202076395 U CN202076395 U CN 202076395U CN 2011201926254 U CN2011201926254 U CN 2011201926254U CN 201120192625 U CN201120192625 U CN 201120192625U CN 202076395 U CN202076395 U CN 202076395U
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- CN
- China
- Prior art keywords
- rabbet joint
- coaxial cable
- line
- leaky coaxial
- outer conductor
- 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 - Lifetime
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Abstract
The utility model relates to a leakage coaxial cable, which comprises an inner conductor, an insulated layer, an outer conductor with punching holes vertically wrapped by copper strips and an outer sheath from inside to outside, and a plurality of groups of leakage groove holes are arranged on the outer conductor with punching holes vertically wrapped by copper strips. The leakage coaxial cable has the advantages of being simple in structure and capable of restraining resonance points and improving multi-path fading and uniformity of longitudinal coupling loss of the leakage coaxial cable.
Description
Technical field
The utility model relates to the communications field, relates in particular to a kind of vertical bag outer conductor leaky coaxial cable.
Background technology
Leaky coaxial cable is in the underground mobile communication system, for improving a kind of special antenna that propagation properties adopts, the transmission characteristic of its existing transmission line has the aerial radiation characteristic again, can overcome underground strong electromagnetic, solved the very high frequency(VHF) wireless signal tunnel space can't natural propagation problem.Leaky coaxial cable also is widely used in fields such as security protection, detection sensing except the radio communication that is applied to places such as railway, tunnel, mine covers at present, and development prospect is very wide.
Leaky coaxial cable generally comprises inner wire, insulating barrier, punched copper tape vertical bag outer conductor and oversheath four parts from inside to outside, the version of outer conductor has determined the performance of sewing of cable, wherein the slotted eye technology of outer conductor is the major technique of leaky coaxial cable, and its radiation characteristic of leaky coaxial cable is mainly determined by size, shape and the arrangement mode of these slotted eyes.
Existing leaky coaxial cable has a variety of outer conductor versions, wherein the version with Eight characters groove and U type groove is the typical case, as shown in Figure 1, the leaky coaxial cable standing-wave ratio of single Eight characters groove outer conductor structure is relatively poor, frequency band is narrower, as shown in Figure 2, the leaky coaxial cable radiation fluctuation of U type groove outer conductor structure is bigger, is unsuitable for the wideband mobile communication system and uses.
Summary of the invention
The purpose of this utility model is in order to overcome above deficiency, provide a kind of simple in structure, can suppress resonance point, improve multipath fading, improve the leaky coaxial cable inhomogeneity leaky coaxial cable of coupling loss longitudinally.
The purpose of this utility model is achieved through the following technical solutions: a kind of leaky coaxial cable, form by inner wire, insulating barrier, punched copper tape vertical bag outer conductor and oversheath respectively from nexine to skin, on the vertical bag of punched copper tape outer conductor, have many groups and sew slotted eye.
Further improvement of the utility model is: every group is sewed slotted eye is four Eight characters groove group structures, and each four Eight characters groove group is that two lines of rabbet joint that are listed as symmetrical and tilt distribution constitute.
Further improvement of the utility model is: two four Eight characters groove groups that are listed as symmetrical and tilt distribution comprise eight described lines of rabbet joint altogether, and eight lines of rabbet joint are arranged by four one row left-right symmetric, and two each corresponding line of rabbet joint of row distribute symmetrically.
Further improvement of the utility model is: every line of rabbet joint is that right angle rectangle or four jiaos are the rectangle of circular arc chamfering, the width of every line of rabbet joint and identical length with.
Further improvement of the utility model is: inner wire is smooth copper inner wire or spiral inner wire.
The utility model compared with prior art has the following advantages:
The utility model is periodic a series of four Eight characters groove groups with the malformation of typical Eight characters groove outer conductor, is equivalent to increase according to certain rule the fluting quantity of Eight characters groove outer conductor structure, can reach the purpose that suppresses resonance point.All lines of rabbet joint on the leaky coaxial cable outer conductor can produce the reflection coefficient of self, when the position of selecting four suitable Eight characters groove groups and form, the reflection coefficient of newly-increased line of rabbet joint generation and the reflection coefficient of former Eight characters line of rabbet joint generation are cancelled out each other, standing-wave ratio is reduced greatly, reach the purpose that suppresses resonance point, thereby correspondingly expanded frequency band.
Secondly, the special slotted hole structure of the utility model can be guaranteed the consistency of leaky coaxial cable coupling loss, improves the characteristic of multipath fading.
In addition, it is the rectangle structure of circular arc chamfering that each line of rabbet joint described in the utility model is shaped as right angle rectangle or four jiaos, wherein select four jiaos to be that the rectangle structure of circular arc chamfering not only is beneficial to processing, and chamfering structure can reduce the coupling loss sudden change that rectangle line of rabbet joint two ends right angle electrical causes, thereby can improve leaky coaxial cable coupling loss uniformity longitudinally better.
Description of drawings:
Fig. 1 is the leaky coaxial cable structural representation of existing Eight characters groove outer conductor;
Fig. 2 is the leaky coaxial cable structural representation of existing U type groove outer conductor;
Fig. 3 is the utility model four Eight characters groove outer conductor leaky coaxial cable structural representations;
Fig. 4 sews the slotted hole structure distribution schematic diagram for the outer conductor of first kind of preferred embodiment of the present utility model;
Fig. 5 sews the slotted hole structure distribution schematic diagram for the outer conductor of second kind of preferred embodiment of the present utility model;
Fig. 6 sews the slotted hole structure distribution schematic diagram for the outer conductor of the third preferred embodiment of the present utility model;
Fig. 7 sews the slotted hole structure distribution schematic diagram for the outer conductor of the 4th kind of preferred embodiment of the present utility model;
Fig. 8 sews the slotted hole structure distribution schematic diagram for the outer conductor of the 5th kind of preferred embodiment of the present utility model;
Number in the figure: 1-inner wire, 2-insulating barrier, the vertical bag of 3-punched copper tape outer conductor, 4-oversheath, 5-sew slotted eye, the 6-line of rabbet joint, 7-Eight characters groove, 8-U type groove.
Embodiment:
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection range.
Show the numerous embodiments of a kind of leaky coaxial cable of the utility model as Fig. 3 to Fig. 8, this cable is made up of inner wire 1, insulating barrier 2, punched copper tape vertical bag outer conductor 3 and oversheath 4 respectively from nexine to skin, wherein inner wire is smooth copper inner wire or spiral inner wire, insulating barrier is formed by polythene physics foaming, the vertical bag of punched copper tape outer conductor layer is that the vertical bag of scale copper of smooth or embossing forms, and scale copper is provided with many groups of being used for transmission of wireless signals and sews slotted eye 5, and external sheath layer is black polyethylene or low-smoke non-halogen flame-retardant polyethylene hydrocarbon.
On the outer conductor to sew slotted hole structure most important to the performance of leaky coaxial cable.The utility model proposes a class brand-new sew slotted hole structure, this sews slotted hole structure for along a series of four Eight characters groove groups of having of cable axial cyclic, each four Eight characters groove group be two row symmetrically and the lines of rabbet joint 6 of tilt distribution constitute.As shown in Figure 3, wherein two four Eight characters groove groups that are listed as symmetrical and tilt distribution comprise eight lines of rabbet joint altogether, arrange by four one row left-right symmetric, and two each corresponding line of rabbet joint of row distribute symmetrically.This arrangement pitch, angle of inclination of sewing each line of rabbet joint in the proportional sizes of slotted eye by changing the line of rabbet joint itself, the groove group, can realize leaky coaxial cable under different frequencies of utilization performance requirement.
Above-mentioned four Eight characters groove groups can have different combining structures, below provide different embodiments:
Fig. 4 sews the slotted hole structure distribution schematic diagram for the outer conductor of first kind of preferred embodiment of the present utility model.As shown in the figure, outer conductor 3 upper edge cable axial cyclic have a series of identical slotted eye 5 of sewing, i.e. four Eight characters groove groups, each four Eight characters groove group is by eight lines of rabbet joint 6 that are divided into two row
1, 6
2, 6
3, 6
4, 6
5, 6
6, 6
7, 6
8Form, every row contain four lines of rabbet joint, and are Eight characters flute profile symmetric arrays mutually, and it is the rectangle of circular arc chamfering that the line of rabbet joint is shaped as right angle rectangle or four jiaos, the width of every line of rabbet joint and identical length with.Wherein the left column line of rabbet joint 6
1, 6
2, 6
3, 6
4The angle of inclination axial with respect to cable is α, and four lines of rabbet joint are with spacing d
1Axially arrange successively along cable; The right row line of rabbet joint 6
5, 6
6, 6
7, 6
8The angle of inclination axial with respect to cable is β, and angle β and angle α complementation, and four lines of rabbet joint are also with spacing d
1Axially arrange successively along cable, in addition, first line of rabbet joint 6 of right row
5The 4th line of rabbet joint 6 with left column
4Be d apart
2, and satisfy d
2D
1Four line of rabbet joint groups of above-mentioned left column and four line of rabbet joint groups of right row are p/2 apart, and forms an elementary cell together, and follow-up all four Eight characters groove groups are this elementary cell along the axial repetition of cable, and the repetition period is p.
Adopt the leaky coaxial cable of this first kind of preferred embodiment, can obtain wideer working band, satisfy the frequency range demand of medium and low frequency and medium-high frequency simultaneously, and improve the cable radiance, the coupling loss fluctuation also reduces greatly in addition, and fluctuation can guarantee in the scope of ± 5dB.
Fig. 5 sews the slotted hole structure distribution schematic diagram for the outer conductor of second kind of preferred embodiment of the present utility model.As shown in the figure, the difference of this scheme and first kind of preferred embodiment is the line of rabbet joint 6
1, 6
2With the line of rabbet joint 6
7, 6
8Spacing identical, be d
1, and the line of rabbet joint 6
2, 6
3, 6
4Each spacing and the line of rabbet joint 6
5, 6
6, 6
7Each spacing be d
2, first line of rabbet joint 6 of right row
5The 4th line of rabbet joint 6 with left column
4Be d apart
3, and satisfy d
3D
1D
2Adopt the leaky coaxial cable of this second kind of preferred embodiment also can obtain and first kind of preferred embodiment similar effects.
Fig. 6 sews the slotted hole structure distribution schematic diagram for the outer conductor of the third preferred embodiment of the present utility model.As shown in the figure, the difference of this scheme and first and second kind preferred embodiment is the line of rabbet joint 6
1, 6
2, the line of rabbet joint 6
3, 6
4, the line of rabbet joint 6
5, 6
6With the line of rabbet joint 6
7, 6
8Spacing identical, be d
1, and the line of rabbet joint 6
2, 6
3With the line of rabbet joint 6
6, 6
7Spacing be d
2, first line of rabbet joint 6 of right row
5The 4th line of rabbet joint 6 with left column
4Be d apart
3, and satisfy d
3D
2D
1Adopt the leaky coaxial cable of this third preferred embodiment also can obtain and first kind of preferred embodiment similar effects.
Fig. 7 sews the slotted hole structure distribution schematic diagram for the outer conductor of the 4th kind of preferred embodiment of the present utility model.As shown in the figure, the difference of this scheme and first, second and third kind preferred embodiment is the line of rabbet joint 6
1, 6
2, 6
3Each spacing and the line of rabbet joint 6
6, 6
7, 6
8Each spacing identical, be d
1, and the line of rabbet joint 6
3, 6
4With the line of rabbet joint 6
5, 6
6Spacing be d
2, first line of rabbet joint 6 of right row
5The 4th line of rabbet joint 6 with left column
4Be d apart
3, and satisfy d
3D
2D
1Adopt the leaky coaxial cable of the 4th kind of preferred embodiment also can obtain and first kind of preferred embodiment similar effects.
Fig. 8 sews the slotted hole structure distribution schematic diagram for the outer conductor of the 5th kind of preferred embodiment of the present utility model.As shown in the figure, the difference of this scheme and above-mentioned four kinds of preferred embodiments is the line of rabbet joint 6
1, 6
2, the line of rabbet joint 6
3, 6
4, the line of rabbet joint 6
5, 6
6With the line of rabbet joint 6
7, 6
8Spacing identical, be d
1, and the line of rabbet joint 6
2, 6
3With the line of rabbet joint 6
6, 6
7Spacing be d
2, first line of rabbet joint 6 of right row
5The 4th line of rabbet joint 6 with left column
4Be d apart
3, and satisfy d
3D
1D
2Adopt the leaky coaxial cable of the 5th kind of preferred embodiment also can obtain and first kind of preferred embodiment similar effects.
Above-mentioned several embodiments of the present utility model are not to be to qualification of the present utility model, those skilled in the art can be according to the performance index requirement of leaky coaxial cable under the concrete frequency range, and arrangement pitch, the angle of inclination of each line of rabbet joint in the proportional sizes of the line of rabbet joint itself, the groove group is provided with; Therefore, do not break away from the variation and the change of the utility model essence, all should be within protection range of the present utility model.
Claims (5)
1. leaky coaxial cable, form by inner wire (1), insulating barrier (2), punched copper tape vertical bag outer conductor (3) and oversheath (4) respectively from nexine to skin, it is characterized in that: on described punched copper tape vertical bag outer conductor (3), have many groups and sew slotted eye (5).
2. according to the described a kind of leaky coaxial cable of claim 1, it is characterized in that: every group of described slotted eye (5) of sewing is four Eight characters groove group structures, and each described four Eight characters groove group is that two lines of rabbet joint (6) that are listed as symmetrical and tilt distribution constitute.
3. according to the described a kind of leaky coaxial cable of claim 2, it is characterized in that: two described four Eight characters groove groups that are listed as symmetrical and tilt distribution comprise eight described lines of rabbet joint (6) altogether, article eight, the described line of rabbet joint (6) is arranged by four one row left-right symmetric, and the described line of rabbet joint (6) of two each correspondence of row distributes symmetrically.
4. according to claim 2 or 3 described a kind of leaky coaxial cables, it is characterized in that: every described line of rabbet joint (6) is the rectangle of circular arc chamfering for right angle rectangle or four jiaos, the width of every described line of rabbet joint (6) and identical length with.
5. according to the described a kind of leaky coaxial cable of claim 4, it is characterized in that: described inner wire (1) is smooth copper inner wire or spiral inner wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201926254U CN202076395U (en) | 2011-06-09 | 2011-06-09 | Leakage coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201926254U CN202076395U (en) | 2011-06-09 | 2011-06-09 | Leakage coaxial cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076395U true CN202076395U (en) | 2011-12-14 |
Family
ID=45114479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201926254U Expired - Lifetime CN202076395U (en) | 2011-06-09 | 2011-06-09 | Leakage coaxial cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076395U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290625A (en) * | 2011-06-09 | 2011-12-21 | 中天日立射频电缆有限公司 | Leaky coaxial cable |
| CN103151591A (en) * | 2013-03-21 | 2013-06-12 | 江苏亨鑫科技有限公司 | Wide/high-frequency, low-loss and homogeneous-radiation leaky coaxial cable |
-
2011
- 2011-06-09 CN CN2011201926254U patent/CN202076395U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290625A (en) * | 2011-06-09 | 2011-12-21 | 中天日立射频电缆有限公司 | Leaky coaxial cable |
| CN103151591A (en) * | 2013-03-21 | 2013-06-12 | 江苏亨鑫科技有限公司 | Wide/high-frequency, low-loss and homogeneous-radiation leaky coaxial cable |
| CN103151591B (en) * | 2013-03-21 | 2015-09-16 | 江苏亨鑫科技有限公司 | A kind of wide high-frequency low-consumption homogeneous radiation leaky coaxial cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226010 No. 1, new road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee after: Zhongtian RF cable Co., Ltd. Address before: 226010 No. 1, new road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee before: Zhongtian Rili Rf Cable Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |
|
| CX01 | Expiry of patent term |