Cable for powering of mast mounted radio equipment

A technology for radio equipment and antenna masts, which is applied to power cables including electrical communication lines, power cables including electric control, power cables with shielding layers/conductive layers, etc., and can solve problems such as cable common-mode characteristic limitations, To achieve the effect of reducing voltage changes

Inactive Publication Date: 2015-02-04
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the cable described above works well, the co-mode nature of the cable is still a limitation in many scenarios

Method used

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  • Cable for powering of mast mounted radio equipment
  • Cable for powering of mast mounted radio equipment
  • Cable for powering of mast mounted radio equipment

Examples

Experimental program
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Embodiment Construction

[0063] Throughout the following description, where applicable, like reference numerals are used to refer to like elements, network nodes, parts, items or features. In the figures, features present in some embodiments are indicated by dashed lines.

[0064] Figure 4 is an overview showing a radio remote unit (RRU) 400 struck by lightning 401 . The RRU 400 is connected to the radio control device 110 which may be located indoors or outdoors. The radio control device 110 may be a radio base station, a base unit, or the like. The radio control device 110 controls the transmission and / or reception of signals at the radio device.

[0065] In case of fast transients of current in the powered unit, power cables with low inductance and generally low impedance are required for DC power distribution.

[0066] At least two examples are given in this description:

[0067] 1) A shielded coaxial cable, such as a triaxial cable, and

[0068] 2) A shielded pair of cables with a separate...

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PUM

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Abstract

A cable (100) for powering of radio equipment (110) mounted on a mast for carrying the radio equipment (110) is disclosed. The cable (100) comprises a first conductor (C) for feeding a current to the radio equipment (110), a return and shielding conductor (R, G) for feeding a return current from the radio equipment (110) and for shielding of the first conductor (C), and an insulating material (l1) disposed between the first conductor (C) and the return and shielding conductor (R, G). The first conductor (C) is at least partially enclosed by the insulating material (I1). A first cross-sectional area of the first conductor (C) is less than a second cross-sectional area of the return and shielding conductor (R, G).

Description

technical field [0001] Embodiments herein relate to the field of telecommunications. In particular, cables for powering mast mounted equipment and devices comprising one or more such cables are disclosed. Background technique [0002] In a telecommunications system, many radio remote units (RRUs) usually work in a cooperative manner. Therefore, an RRU is usually connected to a radio control device that is common to the RRUs connected to it. In order for the RRU to be able to send and receive radio signals, the RRU may be powered from a radio control device through a cable. [0003] In direct current (DC) and alternating current (AC) power applications, it is useful to have low inductance transmission lines (eg, cables with low inductance). This provides lower voltage fluctuations, especially for higher frequencies and fast transients of load current. In addition, when a fault occurs, the fuse will be safer and easier to quickly cut the power line. [0004] A known cable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B9/04
CPCH01B9/04H01B9/003H01B9/02
Inventor 拉斯·埃夫雷蒙森
Owner TELEFON AB LM ERICSSON (PUBL)
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