Miniaturized broadband tri-polarized antenna

Abstract

The invention relates to a miniaturized broadband tri-polarized antenna, and belongs to the technical field of antennas. The antenna comprises a dielectric cavity placed on a metal bottom plate,wherein an antenna vertical radiator part is printed on the surface of the dielectric cavity; a radiation cover plate which is arranged right above the dielectric cavity, wherein an antenna horizontal dual-polarized radiator part is printed on the upper surface of the radiation cover plate; two microstrip dielectric plates which are arranged in the dielectric cavity in a crossed manner, wherein microstrip lines are printed on the front surfaces of the microstrip dielectric plates, metal ground planes with gaps are printed on the back surfaces of the microstrip dielectric plates, the upper edges of the metal ground planes are connected with the antenna horizontal dual-polarization radiator part, and the lower edges of the metal ground planes are connected with the metal bottom plate; and a feed substrate which is arranged in the dielectric cavity, wherein an equal power division microstrip matching circuit is printed on the upper surface of the feed substrate. The antenna provided by the invention realizes the broadband and miniaturization of a tri-polarized antenna, and can be used as a base station antenna and an antenna in a mobile communication system to improve the spectrum utilization rate, increase the communication capacity and the like.

Description

technical field [0001] The invention belongs to the technical field of antennas, and in particular relates to a miniaturized broadband triple-polarization antenna, which can be used as a base station antenna and an antenna in a mobile communication system, and is used to improve frequency spectrum utilization and increase communication capacity. Background technique [0002] In the field of mobile communication, the demand for data transmission is increasing day by day, and the frequency band resources are increasingly tight, so it is imperative to increase the capacity of the communication system. Usually, it can be achieved by increasing the frequency bandwidth, such as expanding the used frequency band to the millimeter wave band, but there are still many problems to be solved. In addition, it may be considered to improve the utilization rate of spectrum, and an effective solution is to adopt multiple-input multiple-output (MIMO) technology. A MIMO system refers to a com...

AI Technical Summary

Problems solved by technology

At present, the research on the three-polarization antenna is focused on the realization of the three polarization functions. The antenna has narrow bandwidth, large size and uncontrolled radiation characteristics.

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