Bidirectional radiating antenna used in mine shafts and tunnels

Abstract

The invention discloses a bidirectional radiating antenna used in mine shafts and tunnels, belonging to the field of antenna design in wireless communication. The bidirectional radiating antenna is characterized in that a rectangular metal frame is stimulated by a short metal post, wherein the metal frame works in a one-wavelength mode, two narrow sides of the metal frame are radiating main bodies, the distance between the two narrow sides is a little bit smaller than half wavelength, the radiating main bodies form an array and realize the bidirectional radiating with higher gain, the bidirectional radiating antenna can be matched better at a feed port by regulating the height and the diameter of the short metal bars, the long side length and the narrow side length of the metal frame and the width of the metal frame, and the bidirectional radiating property with higher gain is realized. The bidirectional radiating antenna has the advantages of being small in volume, small in windward area, low in cost, easy to process, high in gain and the like, is suitable for realizing wireless communication in the classical space-limited non-free space propagation channels, such as the mine shafts and the tunnels.

Description

technical field [0001] The invention relates to a two-way radiation antenna, which is suitable for realizing reliable wireless communication in mines and tunnels, and belongs to the antenna design field of wireless communication technology. Background technique [0002] This year, my country's mining production safety accidents have occurred frequently, which has aroused widespread concern in the society, and safety production has become the focus. Mine communication, as a necessary means for dispatching the overall situation, front-line command, and safety monitoring, has also attracted more and more attention. In the mine communication system, it is divided into wired communication and wireless communication. The early relatively mature mine communication schemes at home and abroad basically use wired communication methods, that is, wired telephone lines or leaky cables. However, in the mine communication system, there are many problems in wired communication: firstly, u...

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Problems solved by technology

However, in the mine communication system, there are many problems in wired communication: firstly, under the mine, the mine is usually several kilometers or even tens of kilometers, the cost of laying cables is high, and the maintenance is also relatively difficult; secondly, most mines in our country are Through manual mining, there are many mining procedures, scattered operating locations, and high mobility of personnel. It is difficult for wired communication to meet such flexible applications; thirdly, in wired communication systems, the transmission loss of cables is relatively large, so repeaters need to be added to increase communication. The distance increases the complexity and cost of the system. Too many repeaters will increase the background noise sharply, which will reduce the communication quality; in addition, the failure of any relay station will lead to subsequent communication paralysis

[0009] It should be noted that the antenna design mentioned above does not take into account how to combine with the explosion-proof system

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