Ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna

Abstract

The invention discloses an ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna, and mainly solves the problems of wide frequency band, omnidirectional horizontal polarization and miniaturization of an antenna cannot be satisfied in the prior art. The ultra-wide-band horizontally-polarized omnidirectional connection type Vivaldi circular array antenna comprises a radiation unit (1), a feeding network (2) and a dielectric plate (3), wherein the radiation unit (1) is a 16-element connecting type Vivaldi antenna array which is formed by a Vivaldi unit around a center in a rotating manner; the feeding network (2) adopts a one-into-sixteen broadband Wilkinson power divider and a coupling microstrip feeder line; electromagnetic energy is coupled to the radiation unit through the coupling microstrip feeder line; the dielectric plate (3) adopts a Kangtaini (a Chinese brand name)dielectric plate with a dielectric constant of 2.55; the radiation unit and the feeding network are printed on the upper and lower surfaces of the dielectric plate; and the centers of the radiation unit and the feeding network coincide with that of the dielectric plate. The circular array antenna has the characteristics of ultra wide band, omnidirectional horizontal polarization and miniaturization, and can be used in a full-coverage ultra-wide-band wireless communication system in the peripheral regions.

Description

Technical field [0001] The invention belongs to the field of antenna technology, and further relates to a Vivaldi circular array antenna, which can be used in wireless communication systems that need to obtain omnidirectional horizontal polarization in an ultra-wideband range and achieve antenna miniaturization. Background technique [0002] As the radiator or receiver of the wireless communication system, the antenna's characteristics play an important role in the overall function of the system. In order to increase the effective coverage of the surrounding area, horizontally polarized omnidirectional antennas have received more attention. While achieving omnidirectional horizontal polarization, the antenna also needs to be able to operate in a wider frequency band. In addition, antenna miniaturization is also an important factor in antenna selection. [0003] In the design process of traditional array antennas, the mutual coupling effect between antenna units is regarded...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the working bandwidth is narrow, which limits the further application of the antenna in the field of communication.

However, the disadvantage of this antenna is that its size is relatively large, which cannot meet the needs of communication systems for antenna miniaturization

Images