Leaking coaxial cable

A leaky coaxial cable and slot technology, which is applied to circuits, electrical components, leaky waveguide antennas, etc., can solve problems such as unstable performance and narrow communication frequency band, and achieve improved communication quality, low system loss, and optimized slot structure and size effects

Inactive Publication Date: 2010-11-24
CHINA XIDIAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The GSM-R digital mobile communication system uses a frequency band above 900MHz. The frequency band of digital transmission communication is wider and the quality of connection is higher. The existing leaky coaxial cable is limited by the s

Method used

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Embodiment Construction

[0025] Such as figure 2 As shown, it is a structural schematic diagram of the leaky coaxial cable of the present invention, the cable includes an inner conductor 1 and an insulating layer 2 wrapped on the inner conductor 1 from inside to outside, an outer conductor 3, a tape layer 4 and an outer sheath 5 , wherein, the outer conductor 3 is equally spaced along the cable axial direction with several triple-eight-shaped slot groups, and the triple-eight-shaped slot group is composed of two rows of slots that are symmetrically and obliquely distributed. figure 2 The leaky coaxial cable structure is given in , and its two rows of triple splayed slots that are symmetrically inclined to each other include six slots, and the six slots are arranged symmetrically in three rows, and the corresponding slots in the two rows are symmetrically distributed to each other; The distance between the adjacent slots of the single row of slots is equal, and the radiation angle is the same; and the ...

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Abstract

The invention relates to a leaking coaxial cable with a grooved outer conductor. The leaking coaxial cable comprises an inner conductor and an insulating layer, an outer conductor, a packing layer and an outer sheath which are wrapped on the inner conductor in turn from inside to outside. The leaking coaxial cable is characterized in that: the outer conductor is uniformly provided with a plurality of triplex splayed groove slit groups, the triplex splayed groove slit groups consist of two columns of groove slits which are mutually symmetrically and obliquely distributed; and the groove slits form a combined structure according to different proportional sizes, different arrangement intervals and different radiation angles of the adjacent groove slits. The coaxial cable has wider communication band and more excellent voltage standing wave ratio and coupling loss value at 900MHz frequency band, has low system loss in a prescribed frequency band, excellent polarization property and about +/-5dB fluctuation of radiation intensity, improves the wireless communication quality, and realizes long-distance wireless blind area coverage. The outer conductor adopts a self-adhesive copper strip so that the consistency of longitudinally-wrapped overlapped lines of the copper strip along the length direction of the cable is ensured, the coupling loss fluctuation of the cable is lower and the polarization property is excellent.

Description

technical field [0001] The invention relates to the field of railway communication, in particular to a special frequency band leaky coaxial cable for a railway GSM-R digital mobile communication system. Background technique [0002] Leaky coaxial cables have the dual functions of information transmission lines and transceiver antennas in wireless communication, especially in areas where discrete antennas cannot provide sufficient field strength, such as between fixed objects such as mountains, hills, subways, tunnels, and buildings. Wireless communication is mainly realized by leaky coaxial cables. Its main application areas include mobile, China Unicom, telecommunications, radio and television, China Netcom, Railcom and other departments. [0003] The structure of a leaky coaxial cable is generally composed of an inner conductor 1, an insulating layer 2, an outer conductor 3 and an outer sheath 5 from the inside to the outside, as shown in Figure 1, the slot shape, size, ...

Claims

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Application Information

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IPC IPC(8): H01P3/06H01Q13/20
Inventor 黄晓勇是溪明江兰
Owner CHINA XIDIAN GRP CO LTD
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