Dual-polarization array antenna unit and low-profile high-isolation MIMO antenna

Abstract

The embodiment of the invention discloses a dual-polarization array antenna unit. The dual-polarization array antenna unit comprises a plurality of radiation units, a first polarization feed network and a second polarization feed network, wherein the first polarization feed network and the second polarization feed network are correspondingly connected with the radiation units respectively. A plurality of feed ports, connected the radiation units, of the first polarization feed network are first feed ports and a plurality of feed ports, connected with the radiation units, of the second polarization feed network are second feed ports, wherein the adjacent first feed ports are connected in a constant-amplitude same-phase feed mode and the adjacent second feed ports are connected in a constant-amplitude reverse-phase feed mode. The embodiment of the invention further discloses a low-profile high-isolation MIMO antenna composed of the dual-polarization array antenna unit. The dual-polarization array antenna unit and the low-profile high-isolation MIMO antenna have the advantages that the overall peripheral size can be effectively reduced, the manufacturing technology is simple and cross polarization and isolation can be effectively improved.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a dual-polarization array antenna unit and a low-profile high-isolation MIMO antenna. Background technique [0002] In the field of mobile communication, in order to improve anti-multipath interference capability and improve call quality, dual-polarized antennas are usually used for polarization diversity reception. In the field of wireless access, vertically polarized + horizontally polarized dual-polarized antennas are usually used to form MIMO multi-channels, which have obvious advantages in data rate and hierarchical reception effect. The core concept of MIMO is to use MIMO antennas to provide The spatial degree of freedom can effectively improve the spectral efficiency of the wireless communication system, so as to increase the transmission rate and improve the communication quality. [0003] Due to the high frequency and narrow relative frequency b...

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Problems solved by technology

[0008] In view of the above problems, the object of the present invention is to provide a dual-polarization array antenna unit and a low-profile high-isolation MIMO antenna to overcome the small mutual coupling, wide bandwidth, small size, Unstable performance and other issues, reduce the size of the antenna, reduce the number of components of the antenna, improve the cross-polarization ratio and isolation index of the antenna, and improve the consistency of product production

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