High Gain, Vertically Shaped Broadband Phased Array Omnidirectional Antenna

Abstract

The invention discloses a high-gain vertical-plane forming broadband phased array omnidirectional antenna which comprises a feed network (9) and a radiating element. The feed network (9) comprises a directional coupler and a one-to-more power dividing network, wherein the radio-frequency signal input end of the directional coupler is connected with a radio-frequency signal input interface, the radio-frequency signal output end of the directional coupler is connected with the radio-frequency signal input end of the power dividing network, multiple output ends of the power dividing network are connected with multiple oscillator units (8) through multiple radio-frequency output ports respectively, and the power dividing network is a radial radiation type power dividing network. The radiating element comprises multiple oscillator units (8) and a supporting metal tube (1), wherein the multiple oscillator units (8) are fixed to the outer wall of the supporting metal tube (1), and the feed network (9) is inserted and installed in the supporting metal tube (1). The high-gain vertical-plane forming broadband phased array omnidirectional antenna adopts the oscillator units and the feed network which are integrated, is simple in structure, decreases ground multi-path reflection and decreases upper silence space on the horizon line.

Description

technical field [0001] The invention relates to the field of omnidirectional antennas, in particular to a high-gain, vertical plane shaped broadband phased array omnidirectional antenna. Background technique [0002] The antenna has different radiation or receiving capabilities for different directions in space, which is the directivity of the antenna. There are two types of antennas, omnidirectional and directional, depending on the directionality. [0003] Omnidirectional antennas, that is, 360° uniform radiation on the horizontal pattern, which is commonly referred to as non-directional, and a beam with a certain width on the vertical pattern, generally the smaller the lobe width, The greater the gain. Omnidirectional antennas are generally used in mobile communication systems in the station type of the suburban county system, with a large coverage area. [0004] The existing omnidirectional antennas mainly have the following methods and characteristics: [0005] 1. T...

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Problems solved by technology

[0005] 1. The existing omnidirectional antenna can achieve omnidirectional pattern in the horizontal plane, and the high gain of the antenna can be obtained through the coaxial multi-element array, such as CO-CO antenna, Franklin antenna, series-fed coaxial oscillator array, etc., but it is difficult to control The amplitude and phase of the radiating unit cannot be shaped as required on the vertical plane, so it is difficult to solve the negative angle radiation of the antenna below the horizon (reduce ground multipath reflection) and reduce the headspace blind zone on the horizon;

[0006] 2. The conventional power division network is designed as a planar structure. Multiple horizontal and omnidirectional units are connected through the power division network in the vertical plane. Axisymmetric omnidirectional in horizontal plane

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