Broadband multi-frequency omni-directional array antenna

Abstract

The invention discloses a broadband multi-frequency omni-directional array antenna which is mainly used for solving the problem that the existing omni-directional array antenna has narrow frequency band and is easy to be affected by the surrounding environment. The broadband multi-frequency omni-directional array antenna comprises a medium material plate (1), radiation units (2), a radiation floor (3) and a feed network (4), wherein the radiation units of the array antenna and the radiation floor of the array antenna are printed on one side of the medium material plate (1), the feed network is positioned on the other side of the medium material plate (1), each radiation unit (2) forms an arm-shaped symmetric dipole structure by an index curve aebx and a broken line, all the radiation units are placed by adopting the way of placing the radiation units in the forward direction and the reverse direction alternately or placing the one half of the radiation units in the forward direction and placing the other half of the radiation units in the reverse direction according to the sequence, the feed network adopts the shunt-feed feed way, and all the radiation units are respectively coupled and excited through a balun on a shunt-feed feed network. The broadband multi-frequency omni-directional array antenna has the advantages of broadband, multi-frequency and omni-directional performance, and can be used as the omni-directional array antenna in an IMT-Advanced system in the field of mobile communication.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a broadband, multi-band omnidirectional array antenna, which is used as a base station antenna in mobile communication. Background technique [0002] Mobile communication technology has brought fast information communication to human beings. At the same time, the increase in demand has also promoted the vigorous development of mobile communication technology. The development of mobile communication technology is also changing with each passing day. The first generation of analog mobile communication systems has gradually faded out of our field of vision, the second generation of digital mobile communication systems is in the ascendant, and then the third generation of broadband mobile communication systems is being built worldwide. The research and standard formulation of the fourth generation technology are also in full swing. However, the evolution and development of technol...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing omnidirectional array antenna with narrow frequency band and easy omnidirectionality, and propose a new type of broadband and multi-frequency omnidirectional array antenna, so as to realize the widening of the frequency band of the array antenna and improve the efficiency of the array antenna. and system performance, it is easy to realize multiple network sharing

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