5G mobile terminal MIMO antenna based on circuit decoupling

A mobile terminal, 5G technology, applied in the field of antenna design, 5G mobile terminal MIMO antenna, can solve the problems of increasing the complexity of decoupling circuit modeling and debugging, and achieve the effect of reducing complexity and small size

Active Publication Date: 2019-10-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These uncertainties increase the complexity of decoupling circuit modeling and debugging

Method used

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  • 5G mobile terminal MIMO antenna based on circuit decoupling
  • 5G mobile terminal MIMO antenna based on circuit decoupling
  • 5G mobile terminal MIMO antenna based on circuit decoupling

Examples

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0028] As a preferred embodiment of the present invention, the three-dimensional structural diagram of the MIMO antenna described in the present invention is as follows figure 1 shown. This embodiment includes an antenna module 1 , an antenna module 2 , an antenna module 3 , an antenna module 4 , a system floor 5 and a dielectric plate 6 . The antenna module 1 , the antenna module 2 , the antenna module 3 and the antenna module 4 are printed on the upper surface of the dielectric plate 6 , and the system floor 5 is printed on the lower surface of the dielectric plate 6 . The dielectric plate 6 is a low-cost FR4 plate with a thickness of 0.8 mm, a relative permittivity of 4.4, and a loss tangent of 0.02. The physical dimensions of the four antenna modules are the same, all 25×3.5mm 2 .

[0029] The top view of the antenna in this embodiment...

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Abstract

The invention relates to a 5G mobile terminal MIMO antenna based on circuit decoupling and is suitable for the mobile communication field. The 5G mobile terminal MIMO antenna includes four antenna modules, one system floor and one dielectric plate, wherein the four antenna modules have the same physical dimensions and are mirror-symmetrical with respect to a symmetry plane, each antenna module contains two sub antennas, two feed ports and one connection line, the two sub antennas are placed face to face with a spacing of 2 mm, and the two feed ports provide in-phase and inverting excitation signals for the two sub antennas respectively. The 5G mobile terminal MIMO antenna is advantaged in that a distributed circuit decoupling method is utilized to solve a problem that two antennas have strong coupling due to the small spacing, high isolation is achieved in the 3400-3600MHz band, moreover, the distributed circuit decoupling method has advantages of simple decoupling circuit, no antennaspace occupation and low manufacturing cost, and the 5G mobile terminal MIMO antenna has a wide application prospect in multi-antenna design of mobile terminals.

Description

technical field [0001] The invention belongs to the technical field of mobile communication and relates to antenna design, in particular to a MIMO antenna for 5G mobile terminals based on circuit decoupling. Background technique [0002] In order to meet the needs of applications such as the Internet of Things, autonomous driving, and virtual reality, the current mobile communication system is evolving to the fifth generation (5G) standard. The spectrum of 5G mobile communication can be divided into sub-6GHz microwave frequency band and millimeter wave frequency band, among which the 3.5GHz frequency band (3400-3600MHz) is designated as one of the new frequency bands for 5G mobile communication in the future. Therefore, it is of great significance to develop mobile terminal antennas that work in the 3.5GHz frequency band. [0003] MIMO technology has the potential to increase wireless channel capacity exponentially. Under the condition of not increasing the spectrum bandwi...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q9/42H01Q21/00
CPCH01Q1/38H01Q1/48H01Q1/50H01Q1/521H01Q9/42H01Q21/00H01Q21/0006
Inventor 邓长江吕昕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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