A broadband 5g MIMO terminal antenna integrated with dual antennas

A terminal antenna and dual-antenna technology, applied to antennas, antenna coupling, antenna arrays, etc., can solve the problems of not considering the influence of metal frame on the antenna, and can not directly apply terminal equipment, etc., to achieve the effect of less frame gaps and low headroom

Active Publication Date: 2020-06-23
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, environments such as low profile, low headroom, and metal frame wrap caused by these industrial design attributes have brought great challenges to the design of 5G MIMO antennas
[0004] At present, the existing 5G MIMO terminal antenna design schemes hardly consider the influence of the metal frame on the antenna, so none of them can be directly applied to mainstream terminal equipment
Patent [CN108470978A] proposes a metal-frame compatible 5G MIMO terminal antenna design, but its antenna bandwidth can only cover 3.4-3.6GHz and 4.8-5GHz, and 8 antennas need to be deployed in 8 separate areas

Method used

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  • A broadband 5g MIMO terminal antenna integrated with dual antennas
  • A broadband 5g MIMO terminal antenna integrated with dual antennas
  • A broadband 5g MIMO terminal antenna integrated with dual antennas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like image 3 It is a schematic diagram of the integrated dual antenna assembly of the first embodiment, which includes: a first feeding branch 31 , a second feeding branch 32 and an inductive decoupling component 33 . Further, the first feeding branch 31 and the second feeding branch 32 are rectangular, and are directly connected to the first metal frame 21 and the second metal frame 22 respectively. Further, the first feeding branch 31 and the second feeding branch 32 excite the first metal frame 21 and the second metal frame 22 by means of direct power feeding, respectively. Further, the inductive decoupling component 33 is a lumped inductance bridged between the first metal frame 21 and the second metal frame 22 , and the inductance value is 8.2 nanohenries in this embodiment. The length×clearance×height of the integrated dual antenna assembly is 27.8mm×1.5mm×7mm.

[0036] like Figure 4 For the reflection and transmission coefficients of the integrated dual-ante...

Embodiment 2

[0038] like Image 6 It is a schematic diagram of the integrated dual-antenna assembly of the second embodiment. Compared with the first embodiment, the second embodiment is different in that: first, the first feeding branch 31 and the second feeding branch 32 are changed from rectangle to "┌" and "┐" type; The connection relationship between a feeding branch 31 and the second feeding branch 32 and the first metal frame 21 and the second metal frame 22 is changed from direct connection to non-connection with a spacing.

Embodiment 3

[0040] like Figure 7 It is a schematic diagram of the integrated dual-antenna assembly of the third embodiment. Compared with the first embodiment, the third embodiment is different in that the inductive decoupling component 33 has changed from a lumped inductance bridged between the first metal frame 21 and the second metal frame 22 to a bent metal branches. The bent metal branch includes a first horizontal branch 331, a first vertical branch 332 and a second vertical branch 333, which are connected end to end across the first metal frame 21 and the second metal frame 22 to form a closed loop, It can be equivalent to a distributed inductance. The length×clearance×height of the integrated dual-antenna assembly described in this embodiment is 28mm×1.8mm×7mm.

[0041] The key idea of ​​the present invention is that the bent metal branches 33 , the first metal frame 21 , the second metal frame 22 and the metal floor 1 together form a folded H-shaped slot structure, which can in...

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Abstract

A dual-antenna integrated broadband 5G MIMO terminal antenna includes a metal floor, a metal frame, and N integrated dual-antenna assemblies. N floor slots are symmetrically arranged in the edge of the metal floor, and N is an integer from 1 to 4. The four sides of the metal frame are closed and connected, the bottom of the metal frame is connected with the edge of the metal floor, and the metal frame is provided with N frame slots having a one-to-one correspondence with the floor slots. The N integrated dual-antenna assemblies are distributed in the N floor slots respectively, and the centerof each integrated dual-antenna assembly corresponds to one frame slot. Each integrated dual-antenna assembly includes first and second feeding branches and an inductive decoupling assembly, and the inductive decoupling assembly is a lumped inductor or a bent metal branch connected across the two ends of the corresponding frame slot. The dual-antenna integrated broadband 5G MIMO terminal antenna has the advantages of small size, low headspace, broad band, high efficiency, compatibility with a metal frame, fewer frame slots and dual-antenna integration, and is suitable for various small mobileterminals represented by mobile phones.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a MIMO antenna, in particular to a dual-antenna integrated broadband 5G MIMO terminal antenna. Background technique [0002] With the advancement of the fifth generation (5G) mobile communication technology, 5G antennas have become one of the research hotspots in the field of antenna technology. Recently, the international 3GPP organization stipulates that the frequency band of 5G is divided into: the sub-6GHz frequency band of the low frequency band and the millimeter wave frequency band of the high frequency band. At present, the relatively unified Sub-6GHz frequency bands at home and abroad mainly include: n77 (3.3-4.2GHz), n78 (3.3-3.8GHz) and n79 (4.4-5GHz) frequency bands. [0003] In order to increase the capacity of the mobile communication system, 5G terminal equipment starts to deploy 8 or so 5G MIMO antennas in the Sub-6GHz frequency band in mobile phones, tablets and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/22H01Q1/24H01Q1/36H01Q1/44H01Q1/50H01Q1/52H01Q21/00
CPCH01Q1/22H01Q1/242H01Q1/36H01Q1/44H01Q1/50H01Q1/521H01Q21/00H01Q21/0006
Inventor 孙利滨李越张志军冯正和
Owner TSINGHUA UNIV
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