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Ultra-wideband leaky coaxial cable with array source design

A leaky coaxial cable and ultra-broadband technology, which is applied to circuits, electrical components, leaky waveguide antennas, etc., can solve the problems of unspecified rectangular aspect ratio, small correlation, and breaking away from the basis of broadband design, and achieve excellent broadband performance. The effect of excellent radiation performance and excellent transmission performance

Active Publication Date: 2021-10-01
JIANGSU HENGXIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the leaky cable of this invention is a symmetrical chute array with vertical main polarization. In multi-cable applications, the correlation between the cables is relatively large, the MIMO effect of the leaky cable is affected, and the correlation with the working frequency band is too small, which is out of broadband The design basis, and the aspect ratio of the rectangle is not specified, so that there is no guidance for the design optimization of the 800-3600MHz radiation unit

Method used

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  • Ultra-wideband leaky coaxial cable with array source design
  • Ultra-wideband leaky coaxial cable with array source design
  • Ultra-wideband leaky coaxial cable with array source design

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Design a 700-3700MHz vertically polarized ultra-broadband leaky coaxial cable to support 2G / 3G / 4G / 5G co-construction and sharing.

[0060] In order to radiate electromagnetic signals in the 700-3700MHz frequency band, according to the frequency characteristics of the four "eight" character structure, the applicable radiation frequency band is f 0 -7f 0 , f 0 The calculation formula is:

[0061]

[0062] Among them, c is the speed of light, ε is the equivalent relative permittivity of the cable insulation medium.

[0063] When the pitch period P=190mm, calculated according to the equivalent relative permittivity ε=1.248 of the cable insulation medium, the usable radiation frequency band is 745~5215MHz;

[0064] When the pitch period P=260mm, the applicable radiation frequency band is 540-3820MHz, that is, 190-260mm can meet the radiation requirements. However, due to the resonant frequency and unusable frequency of the radiating leaky cable, it needs to be designe...

Embodiment 2

[0083] Design a 700-3700MHz horizontally polarized leaky cable to support 2G / 3G / 4G / 5G co-construction and sharing.

[0084] In order to radiate electromagnetic signals in the 700-3700MHz frequency band, according to the frequency characteristics of the four "eight" character structure, the applicable radiation frequency band is f 0 -7f 0 , f 0 The calculation formula is:

[0085]

[0086] Among them, c is the speed of light, ε is the equivalent relative permittivity of the cable insulation medium.

[0087] When the pitch period P=190mm, calculated according to the equivalent relative permittivity ε=1.248 of the cable insulation medium, the usable radiation frequency band is 745~5215MHz;

[0088] When the pitch period P=260mm, the applicable radiation frequency band is 540-3820MHz, that is, 190-260mm can meet the radiation requirements. However, due to the resonant frequency and unusable frequency of the radiating leaky cable, it needs to be designed in the non-civilian ...

Embodiment 3

[0102] The difference between this embodiment and embodiment 2 is that the rectangular master is replaced by a prismatic master, and finally Figure 6 b The array radiating element.

[0103] The rest are the same as embodiment 1.

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Abstract

The invention discloses an ultra-wideband leaky coaxial cable in array source design, an outer conductor of the cable is provided with array radiation units which are periodically arranged along the axial direction of the cable, one array radiation unit is arranged in one pitch period, each array radiation unit comprises two array radiation unit groove groups, the two array radiation unit slot groups in each array radiation unit are distributed in an axial symmetry manner in a pitch period, each array radiation unit slot group comprises a plurality of basic array unit slots, and the two basic unit slots in each basic array unit slot are distributed in a central symmetry manner. The array radiation unit is designed, so that the leaky coaxial cable realizes excellent broadband performance so as to better support multi-system co-construction and sharing of the leaky coaxial cable for mobile communication, the maximum use bandwidth of 4000 MHz is provided, the high-frequency-band transmission performance is excellent, the low-frequency-band radiation performance is excellent, the comprehensive loss difference of the target segment length of each frequency in the use frequency band is controlled within 5 dB, and the MIMO application effect of the leaky coaxial cable is improved.

Description

technical field [0001] The invention belongs to the technical field of leaky cables, and in particular relates to an ultra-wideband leaky coaxial cable designed with an array source. Background technique [0002] Subway tunnels, high-speed rail tunnels, etc. are very important indoor coverage scenarios for public mobile communications. Usually, the network coverage of such scenarios is completed by laying leaky cables along the tunnel walls to evenly radiate wireless signals, and is not affected by factors such as tunnel shape, curvature, and slope. 2G / 3G / 4G public mobile communications all adopt this scheme, and the coverage effect is good. Due to the substantial increase in the carrying frequency of the 5G communication system, the loss of communication links has further aggravated, which has brought difficulties to the signal coverage of subway tunnels and high-speed rail tunnels. [0003] For the reconstruction project, the distance between the supporting resources and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/20
CPCH01Q13/203
Inventor 杨志行刘中华卫伟吴超康祥鹏
Owner JIANGSU HENGXIN TECH CO LTD
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