Mobile terminal broadband MIMO dual-antenna assembly

Abstract

The invention relates to a mobile terminal broadband MIMO dual-antenna assembly. The mobile terminal broadband MIMO dual-antenna assembly includes a dielectric plate, a metal ground portion, a planarmonopole portion and a signal feeding portion, wherein the metal ground portion is located at one surface of the dielectric plate, and the planar monopole portion and the signal feeding portion are located at the other side of the dielectric plate; the metal ground portion includes a main ground board, a first parasitic ground branch and a second parasitic ground branch; and the planar monopole portion includes an antenna unit A and an antenna unit B, wherein the antenna unit A and the antenna unit B are arranged at two ends of the long edge of the main ground board, and each unit includes twobranches of unequal lengths. The antenna assembly is of a planar structure and can cover a plurality of mobile communication frequency bands in a small size; and the antenna assembly has the advantages of low profile, wide frequency band, high isolation, and small size, and is suitable for various small mobile terminals represented by mobile phones.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to mobile terminal antennas, in particular to a mobile terminal broadband MIMO dual antenna. Background technique [0002] The rapid development of mobile communication technology has greatly changed the way people produce and live. As a common form of mobile terminals, mobile phones have become one of the most popular electronic products in the world. In order to meet various comprehensive services such as high-speed Internet access, high-definition video, and virtual reality, the functions of mobile phones have become more and more powerful, which is mainly reflected in the wireless data transmission rate. According to the Shannon formula, there are two main ways to increase the data transmission rate, one is to increase the bandwidth, and the other is to increase the number of antennas. The bandwidth of mobile communication is getting wider and wider. The frequency bands that ca...

AI Technical Summary

Problems solved by technology

However, these techniques also have certain limitations

The first is that the decoupling bandwidth is narrow

Since these technologies offset the existing coupling by introducing new coupling, and the introduced coupling is often related to the operating frequency, it is difficult to achieve decoupling in the broadband range

The second is the need to occupy additional antenna volume

In order to introduce new coupling, these techniques need to add a new structure between the two antenna elements, which makes the overall size of the antenna larger and more complicated

Considering the strictly limited volume of mobile terminals, the cost of adopting these technologies is relatively high

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