A Broadband Vertically Polarized Omnidirectional Array Antenna with Adjustable Number of Elements

Abstract

The invention provides a broadband vertical polarization omnidirectional array antenna with an adjustable unit number. The antenna comprises an omnidirectional transmission array and a power divider,wherein the omnidirectional transmission array and the power divider are perpendicular to each other and are connected through a metal wire, the omnidirectional transmission array is a cylindrical transmission array formed by uniformly distributing N identical directional transmission arrays along the central axis of the omnidirectional transmission array, and each directional transmission array is formed by vertically arranging eight eight-mesh antenna units which are further connected through a one-to-eight combined power divider. The antenna is advantaged in that the antenna is arranged onfixed or mobile wireless communication equipment through equipment, can be used for mutual communication in a mobile communication system, a future vehicle-mounted navigation system, an unmanned aerial vehicle system and other communication systems, and has advantages of wide band, high gain, excellent out-of-roundness, easiness in processing, low cost, simple structure and the like.

Description

technical field [0001] The invention belongs to the field of wireless communication, and further relates to a broadband vertically polarized omnidirectional array antenna with an adjustable number of units in the field of electromagnetic and microwave radio frequency technology. The antenna can be used for mutual communication in communication systems such as a mobile communication system, a future vehicle navigation system, and an unmanned aerial vehicle system by being equipped on a fixed or mobile wireless communication device. [0002] technical background [0003] Omnidirectional antennas are widely used in modern mobile communications. The so-called omnidirectional antenna means that the radiation pattern in a given plane is basically non-directional, while it is directional in any orthogonal plane. an antenna. Therefore, the special feature of the omnidirectional antenna lies in its radiation characteristics, which can achieve 360° uniform radiation in the horizontal ...

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Problems solved by technology

However, the shortcomings of the antenna still exist. First, because the omnidirectional antenna adopts an irregular trapezoidal structure as a whole, it is easy to deform during the equipment process, resulting in instability of the antenna structure and transmission performance; secondly, in the communication performance In terms of indicators, it is difficult for this antenna to have good out-of-roundness while ensuring broadband, so that the omnidirectional antenna cannot guarantee 360° uniform transmission of energy signals within the horizontal plane range

However, the weak point that this antenna still exists is that due to its compact structure in the form of a single antenna, the antenna also reduces the radiation gain of the antenna while miniaturizing the size of the antenna, so that the antenna of this invention can only be used in In short-distance communication, but for long-distance communication systems, or in the case of poor communication channel quality, the omnidirectional antenna cannot guarantee reliable transmission of communication signals

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