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Novel short-focus amplitude modulation and phase modulation compact range based on transmission metasurface and test method

A super-surface, compact field technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve the problems of practical test limitations, low cost, high cost, etc., to improve test efficiency, high commercial practicability, and low site requirements. Effect

Active Publication Date: 2021-09-17
XI AN JIAOTONG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The compression field is mainly divided into reflection type compression field and transmission type compression field. The related technology of reflection type compression field is relatively mature. The main design scheme is reflection surface compression field, including single reflection surface and multi-reflection surface. Good quiet zone indicator; transmission-type pinching field includes metasurface pinching field and holographic pinching field. Holographic pinching field is characterized by low cost and easy processing, but its disadvantages are narrow frequency band and long focal length, and it is mostly suitable for terahertz
At present, the application of the sub6GHz frequency band compression field mostly adopts the reflection surface compression field, but the solution is huge and expensive
In addition, there are few research programs on metasurface contraction field, and most of them use larger focal lengths, which bring many restrictions to actual tests

Method used

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  • Novel short-focus amplitude modulation and phase modulation compact range based on transmission metasurface and test method
  • Novel short-focus amplitude modulation and phase modulation compact range based on transmission metasurface and test method
  • Novel short-focus amplitude modulation and phase modulation compact range based on transmission metasurface and test method

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0031] Such as figure 1 As shown, the present invention proposes a commercial multi-band production line testing method using the designed short-focus metasurface compact field scheme. figure 1 Among them, 1 and 2 are the metasurface compact field collimators used in the 2.6GHz and 3.5GHz frequency bands respectively, 3 is the broadband feed antenna, 4 is the mechanical rotating shaft conveyor belt of the test production line, and 5 is the equipment to be tested. 1 and 2 are erected vertically above the conveyor belt, and the electromagnetic wave emitted by the feed passes through the metasurface to generate a quiet zone plane wave in the fixed area of ​​the conveyor belt (the area marked by the dotted line). The device under test moves through the conveyor belt and reaches the test quiet zone generated by 1 at a certain speed. After a short stop measurement...

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Abstract

The invention discloses a novel short-focus amplitude modulation and phase modulation compact range based on a transmission metasurface and a test method. The compact range comprises a test production line mechanical rotating shaft conveying belt which is used for operating equipment to be tested, wherein a metasurface compact range collimator in the 2.6 GHz frequency band and a metasurface compact range collimator in the 3.5 GHz frequency band are arranged above the test production line mechanical rotating shaft conveying belt, the metasurface compact range collimator in the 2.6 GHz frequency band and the metasurface compact range collimator in the 3.5 GHz frequency band are connected with feed source antennas respectively, and electromagnetic waves emitted by the feed source antennas pass through the metasurface and then generate quiet zone plane waves in a fixed area of the test production line mechanical rotating shaft conveying belt. Amplitude modulation and phase modulation functions are independently realized through utilizing the transmission type metasurface structure, the two metamaterial structures are combined at a short focus to generate the quiet zone plane waves, and the novel short-focus amplitude modulation and phase modulation compact range is suitable for the Sub6GHz frequency band and can be applied to commercial production line testing to improve the testing efficiency.

Description

technical field [0001] The invention relates to the field of compaction field technology, in particular to a novel short focal length AM phase modulation compaction field based on a transmission metasurface and a testing method. Background technique [0002] 5G construction has entered a stage of rapid development. According to relevant agreements, the 5G frequency band is mainly divided into Sub6GHz and millimeter wave frequency bands. The three major operators in China mainly use the Sub6GHz frequency band. The different frequency band division also means that the relevant test technology has also changed. As a relatively mature test method, the compact field will also be changed according to different test requirements. The compression field is mainly divided into reflection type compression field and transmission type compression field. The related technology of reflection type compression field is relatively mature. The main design scheme is reflection surface compressi...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04B17/00
CPCH04W24/00H04B17/00
Inventor 陈晓明唐家志孟祥帅
Owner XI AN JIAOTONG UNIV
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