Sectored multi-beam antenna based on artificial dielectric cylindrical lens

Abstract

The invention discloses a sectored multi-beam antenna based on an artificial dielectric cylindrical lens. The sectored multi-beam antenna is formed by highly integrating a plurality of antenna units by taking the artificial dielectric cylindrical lens as a carrier. The sectored multi-beam antenna comprises the artificial dielectric cylindrical lens 1, an antenna unit group 2 and metal base plates3, wherein the antenna unit group 2 comprises the plurality of antenna units, each antenna unit is an independent unit and is fixed on one metal base plate 3 to form a whole, and the antenna units areevenly arranged in a row along the semi-circumferential surface of the cylindrical lens at equal heights. The sectored multi-beam antenna can achieve 180-degree full coverage in the horizontal plane,a vertical plane actual measurement directional diagram of each beam is 2-3 times wider than that of the conventional electrically-tuning antenna, and the field strength in a covered region is dominant, thus an electrically-tuning mechanism is not needed. The sectored multi-beam antenna based on the artificial dielectric cylindrical lens can effectively avoid the phenomenon ''that a signal dead end occurs in the surrounding area below a tower'' which is prone to occur in traditional antennas, is especially suitable for dense user and large data traffic service areas, can improve the capacityexponentially by means of multiple beams, and can adapt to the requirement of current and future information transmission outbreaks.

Description

technical field [0001] The invention relates to the field of radio antennas, in particular to an artificial dielectric cylindrical lens sector multi-beam antenna for a mobile communication base station, which can realize horizontal plane coverage within a range of 180°. Background technique [0002] With the rapid expansion of market demand in wireless fields such as mobile communication 4G, 5G, MIMO, satellite communication, radar, and electronic warfare, new technical requirements are also put forward for antennas used as wireless entrances and exits. While meeting the requirements of high gain, low sidelobe, narrow beam, and wide beam coverage, it is also necessary to take into account the needs of scanning speed, cost, and environment. The most important thing is that the antenna must be able to carry a large information capacity without increasing its number and site. [0003] To achieve sector coverage in traditional wireless communication systems, a sector antenna wi...

AI Technical Summary

Problems solved by technology

Although the dielectric body used in this invention is also cylindrical, the dielectric constant of the dielectric body is a uniform value, and the radiation effect of this antenna is hardly comparable to that of Lunbo artificial dielectric multilayer lens.

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