CN102820507A - Method for producing frequency selection leakage cable and frequency selection leakage cable - Google Patents
Method for producing frequency selection leakage cable and frequency selection leakage cable Download PDFInfo
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- CN102820507A CN102820507A CN2012101286859A CN201210128685A CN102820507A CN 102820507 A CN102820507 A CN 102820507A CN 2012101286859 A CN2012101286859 A CN 2012101286859A CN 201210128685 A CN201210128685 A CN 201210128685A CN 102820507 A CN102820507 A CN 102820507A
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- slotted eye
- frequency selection
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Abstract
The invention discloses a method for producing a frequency selection leakage cable and the frequency selection leakage cable. The method and the frequency selection leakage cable can meet requirements of simultaneous transmission and radiation for signals within frequency bands of various specified center frequency and have indexes of transmission losses and coupler losses which meet actual requirements.
Description
Technical field
The present invention is the less radio-frequency transmission technology, is applicable in the transmission of feeble field section to wireless communication system to cover, and belongs to wireless communication technology field.
Background technology
In present leaky cable; Receive the influence of cut-off frequency; Do not have the operating frequency of broad usually, and do not have frequency-selecting transmission and radiation function, and in practical application; Like areas such as underground railway, tunnels, need transmit simultaneously and radiation the signal in the frequency range of multiple designated center.
Summary of the invention
In view of the foregoing; The object of the present invention is to provide a kind of broadband leaky cable with frequency-selecting function; So that in practical application, satisfy the signal in the frequency range of multiple designated center is transmitted and the requirement of radiation simultaneously, and have the loss that corresponds to actual needs and the characteristics of coupling loss index.
For achieving the above object; The present invention introduces a kind of frequency-selecting leaky cable manufacturing approach, and described frequency-selecting leaky cable is a coaxial cable, and coaxial cable outer conductor is provided with slotted eye; It is characterized in that according to each frequency of utilization of setting; Distance between the slotted eye processes each slotted eye according to the result of calculation of d=(75*103)/f respectively on the outer conductor of frequency-selecting leaky cable in twos, and on the whole piece leaky cable, each slotted eye all is periodic rule by above-mentioned spacing and arranges.
For realizing above-mentioned frequency-selecting leaky cable manufacturing approach; The present invention also introduces a kind of frequency-selecting leaky cable, and described frequency-selecting leaky cable is a coaxial cable, and the external diameter specification of coaxial cable is 1-5/8; And coaxial cable outer conductor is provided with a plurality of slotted eyes of continuous arrangement; It is characterized in that slotted eye is of a size of 3.5*20mm2, slotted eye apart from arrangement regulation is: 111mm, 29mm, 7.5mm, 18mm, 7.5mm, 18mm, 7.5mm, 29mm, 111mm, 29mm, 7.5mm, 18mm, 75mm, 18mm, 7.5mm, 29mm; ... sew on the cable at whole piece, all rule is set and is periodic arrangement by above-mentioned spacing.
Operation principle of the present invention is:
The actual functional capability of leaky cable is a linear antenna array, and this antenna array is combined by numerous different binary battle array slotted eye radiating antenna, and whenever slotted eye is a pair of binary battle array slotted eye in twos; The centre frequency of the corresponding radiation signal of a pair of binary battle array radiation parameter, this frequency depends on the spacing d and the dielectric constant of this binary, in the ideal case, can think that dielectric constant is 1; Each is to the spacing between the slotted eye, i.e. binary battle array slot pitch d, and the centre frequency of corresponding respectively a radiation signal also has certain bandwidth characteristic; The similar band pass filter of each binary battle array; It only lets the radiofrequency signal of corresponding frequency band pass through, because each binary battle array is not to be a desirable band pass filter, its amplitude-frequency characteristic has forward position and edge, back; So departing from the not far radiofrequency signal of corresponding centre frequency also can be through a part, so the corresponding frequency range of each binary battle array; Owing to there is multiple binary battle array, thus the radiofrequency signal that leaky cable can a plurality of frequency ranges of leakage rediation, thus become leaky cable with frequency-selecting transfer function.
Description of drawings
Fig. 1 is the structural representation of the frequency-selecting leaky cable of one embodiment of the invention.
Embodiment
Below be example explanation embodiments of the invention with the accompanying drawing:
Fig. 1 is the structural representation of the frequency-selecting leaky cable of one embodiment of the invention, and data unit is mm among the figure, wherein:
1. be the outer conductor of frequency-selecting leaky cable, adopt the wrinkle copper foil material to process; 2. be the inner wire of frequency-selecting leaky cable, adopt copper pipe to process; 3. for being opened in the slotted eye on the leaky cable outer conductor; According to each frequency of utilization of setting; Distance between the slotted eye calculating according to d=(75*103)/f respectively in twos; According to result of calculation, each slotted eye perforate spacing arrangement rule is: 111mm, 29mm, 7.5mm, 18mm, 7.5mm, 18mm, 7.5mm, 29mm, 111mm, 29mm, 7.5mm, 18mm, 7.5mm, 18mm, 7.5mm, 29mm; ... sew on the cable at whole piece, all rule is set and is periodic arrangement by above-mentioned spacing.
According to shown in the above-mentioned accompanying drawing and explanation on the outer conductor of 1-5/8 specification coaxial cable, offer slotted eye can accomplish enforcement of the present invention.
The present invention has introduced a kind of frequency-selecting leaky cable manufacturing approach and frequency-selecting leaky cable; Can satisfy the signal in the frequency range of multiple designated center is transmitted and the requirement of radiation simultaneously, and have the loss that corresponds to actual needs and the characteristics of coupling loss index.
Claims (2)
1. frequency-selecting leaky cable manufacturing approach; Described frequency-selecting leaky cable is a coaxial cable; And coaxial cable outer conductor is provided with slotted eye, it is characterized in that the distance between the slotted eye processes each slotted eye according to the result of calculation of d=(75*103)/f respectively on the outer conductor of frequency-selecting leaky cable in twos according to each frequency of utilization of setting; And leaking on the cable at whole piece, each slotted eye all is periodic rule by above-mentioned spacing and arranges.
2. frequency-selecting leaky cable, described frequency-selecting leaky cable is a coaxial cable, the external diameter specification of coaxial cable is 1-5/8, and coaxial cable outer conductor is provided with a plurality of slotted eyes of continuous arrangement, it is characterized in that slotted eye is of a size of 3.5*20mm
2, slotted eye apart from arrangement regulation is: 111mm, 29mm, 7.5mm, 18mm, 7.5mm, 18mm, 7.5mm, 29mm, sew on the cable at whole piece, and all rule is set and is periodic arrangement by above-mentioned spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101286859A CN102820507A (en) | 2012-04-28 | 2012-04-28 | Method for producing frequency selection leakage cable and frequency selection leakage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101286859A CN102820507A (en) | 2012-04-28 | 2012-04-28 | Method for producing frequency selection leakage cable and frequency selection leakage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102820507A true CN102820507A (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101286859A Pending CN102820507A (en) | 2012-04-28 | 2012-04-28 | Method for producing frequency selection leakage cable and frequency selection leakage cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN102820507A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785639A (en) * | 2017-10-19 | 2018-03-09 | 中天射频电缆有限公司 | A kind of horizontal polarization leaky cable for effectively suppressing standing wave resonance peak value |
| WO2020029341A1 (en) * | 2018-08-07 | 2020-02-13 | 江苏亨鑫科技有限公司 | Functionally gradient leaky coaxial cable |
| WO2023093443A1 (en) * | 2021-11-25 | 2023-06-01 | 华为技术有限公司 | Leaky coaxial cable and communication system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005192036A (en) * | 2003-12-26 | 2005-07-14 | Showa Electric Wire & Cable Co Ltd | Leakage coaxial cable |
| CN202019044U (en) * | 2011-05-13 | 2011-10-26 | 冯嵩 | Hole-slot type variable-coupling self-equalized power leakage coaxial cable |
| CN102361146A (en) * | 2011-09-19 | 2012-02-22 | 哈尔滨工程大学 | Wideband leaky coaxial cable (LCX) for underground rail wireless communication |
| CN202817150U (en) * | 2012-04-28 | 2013-03-20 | 周健 | A frequency-selecting leaky cable |
-
2012
- 2012-04-28 CN CN2012101286859A patent/CN102820507A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005192036A (en) * | 2003-12-26 | 2005-07-14 | Showa Electric Wire & Cable Co Ltd | Leakage coaxial cable |
| CN202019044U (en) * | 2011-05-13 | 2011-10-26 | 冯嵩 | Hole-slot type variable-coupling self-equalized power leakage coaxial cable |
| CN102361146A (en) * | 2011-09-19 | 2012-02-22 | 哈尔滨工程大学 | Wideband leaky coaxial cable (LCX) for underground rail wireless communication |
| CN202817150U (en) * | 2012-04-28 | 2013-03-20 | 周健 | A frequency-selecting leaky cable |
Non-Patent Citations (1)
| Title |
|---|
| 周杭: "漏泄电缆功能分析及其选择要素——漏缆在地铁无线通信中的运用", 《现代城市轨道交通》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785639A (en) * | 2017-10-19 | 2018-03-09 | 中天射频电缆有限公司 | A kind of horizontal polarization leaky cable for effectively suppressing standing wave resonance peak value |
| WO2020029341A1 (en) * | 2018-08-07 | 2020-02-13 | 江苏亨鑫科技有限公司 | Functionally gradient leaky coaxial cable |
| WO2023093443A1 (en) * | 2021-11-25 | 2023-06-01 | 华为技术有限公司 | Leaky coaxial cable and communication system |
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Application publication date: 20121212 |