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Multi-input multi-output antenna device

An antenna device, multiple-input multiple-output technology, applied in antennas, independent non-interacting antenna combinations, antenna unit combinations with different polarization directions, etc., can solve application limitations, MIMO eight antennas have large horizontal or vertical dimensions and other problems. , to achieve the effect of increasing the applicability

Active Publication Date: 2014-11-12
CHINA TELECOM CORP LTD
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Problems solved by technology

[0006] The MIMO eight-antennas in the above two existing array arrangements have relatively large horizontal or vertical dimensions, resulting in application limitations

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] Such as image 3 As shown, it is a schematic structural diagram of an embodiment of the MIMO antenna device of the present invention. In this embodiment, the MIMO antenna device includes: a reflector 100, at least two first dual-polarized array antennas 200, at least two second dual-polarized array antennas 400, and a feeding printed circuit board (Fig. not shown in ) and fixed beamforming networks 500, 600. The feeding printed circuit board is fixed on the first surface of the reflector 100 (ie image 3 the back of the paper), at least two first dual-polarized array antennas 200 and at least two second dual-polarized array antennas 400 are fixed on the second surface of the reflector 100 (ie image 3 paper), the first dual-polarized array antenna 200 and the second dual-polarized array antenna 400 are both c...

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Abstract

The invention relates to a multi-input multi-output antenna device. The multi-input multi-output antenna device comprises a baffle board, at least two first dual-polarization array antennas, at least two second dual-polarization array antennas, a feed printed circuit board and a fixed beamforming network, wherein the feed printed circuit board is fixed to a first face of the baffle board, the at least two first dual-polarization array antennas and the at least two second dual-polarization array antennas are fixed to a second face of the baffle board and are connected with the feed printed circuit board, the fixed beamforming network is fixed to the baffle board, the at least two first dual-polarization array antennas and the at least two second dual-polarization array antennas are arranged in an upper and lower mode, and ports, in the +45-degree polarization direction, of the at least two second dual-polarization array antennas and ports, in the -45-degree polarization direction, of the at least two second dual-polarization array antennas form a +45-degree composite beam and a -45-degree composite beam respectively through the fixed beamforming network. According to the multi-input multi-output antenna device, while original performance indexes can be ensured, applicability of application is improved.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO for short) antenna device. Background technique [0002] In the third-generation mobile communication system that has been commercialized and the fourth-generation mobile communication system that is brewing, MIMO multi-antenna array technology is involved. The use of MIMO technology can increase the capacity of the channel, and at the same time improve the reliability of the channel and reduce the BER. Now the standard defines up to eight antennas for base station antennas, that is, eight-receive and eight-transmit MIMO antennas. [0003] At present, in the design of MIMO antennas, in order to achieve low correlation and high isolation of MIMO antennas, there are generally two array arrangements: [0004] Method 1, such as figure 1 As shown, the horizontally isolated eight-antenna is an eight-ante...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/24H01Q21/28H01Q25/00H01Q19/10H01Q1/38
Inventor 毕奇杨涛谢伟良
Owner CHINA TELECOM CORP LTD
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