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Large-scale array antenna OTA test method and system based on near field

A technology of array antenna and test method, which is applied in the directions of antenna radiation pattern, advanced technology, climate sustainability, etc. It can solve the problems of low test efficiency and inability to meet the test requirements of large-scale antenna array systems, etc.

Active Publication Date: 2021-04-30
CHINA ACADEMY OF INFORMATION & COMM +1
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Problems solved by technology

[0006] The embodiment of the present invention provides a near-field-based large-scale array antenna OTA test method and system, which solves the technical problems of inability to meet the test requirements of large-scale antenna array systems in the 5G era and low test efficiency in the prior art

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In an embodiment of the present invention, a near-field-based large-scale array antenna OTA test method is provided, such as figure 1 and figure 2 As shown, the method includes:

[0026] Step 101: The large-scale array antenna control device receives preset test task information, and the preset test task information includes spatial sampling point distribution, frequency points to be tested, and transmitting and receiving beam pointing s...

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Abstract

The invention provides a large-scale array antenna OTA test method and system based on a near field. The method comprises the steps that: a large-scale array antenna array plane control device receives test task information, configures a to-be-tested large-scale array antenna at a series of specified frequencies and working states, and generates a corresponding to-be-tested wave beam; test equipment collects three-dimensional space near-field emission and reception characteristic information in a CW signal mode and near-field EIRP / EIS test information at a spatial specific point location in a broadband service signal mode; computing equipment obtains a three-dimensional space far-field EIRP pattern and a receiving pattern in a CW signal mode based on near-field and far-field transformation; and three-dimensional space far-field omnidirectional EIRP / EIS test information in the broadband service signal mode is obtained according to the far-field EIRP pattern and the receiving pattern in the CW signal mode and the near-field EIRP / EIS test information at the spatial specific point location in the broadband service signal mode. According to the scheme, the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of antenna testing, in particular to a near-field-based large-scale array antenna OTA testing method and system. Background technique [0002] The rapid development of wireless communication technology and the rich application of wireless networks have driven the rapid growth of wireless data services. The research and development and large-scale commercial use of 5G have become a hot spot in the industry. [0003] Massive MIMO large-scale array antennas and the introduction of new spectrum in the millimeter wave band are the key technologies for 5G to achieve a significant increase in spectral efficiency and system capacity. Large-scale antenna arrays can support multiple independent spatial data streams by increasing the number of antennas on the basis of existing multi-antennas, which will increase the spectral efficiency of multi-user systems several times. In the millimeter wave frequency band, the ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/10
CPCG01R29/10Y02D30/70
Inventor 孙思扬陈欧伟杨蒙刘先会张帅朱星辰周北琦赵磊
Owner CHINA ACADEMY OF INFORMATION & COMM
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