Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing

Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing

Plane Wave Generator (PWG) has recently attracted great attention from industry and academia for over-the-air (OTA) testing of base station (BS) antennas in the fifth-generation (5G) wireless communication systems. This paper aims to reduce the scattering from the PWG to the antenna under test (AUT)...

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Bibliographic Details
Main Authors: Zhaolong Qiao, Zhengpeng Wang, Wei Fan, Xue Zhang, Steven Gao, Jungang Miao
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
5G
OTA testing
PWG
low scattering design
probe antenna design
non-coplanar PWG structure
Online Access:https://ieeexplore.ieee.org/document/9264198/
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spelling doaj-aab4c953875c4f738c71ad83e05925aa2021-05-19T23:03:38ZengIEEEIEEE Access2169-35362020-01-01821134821135710.1109/ACCESS.2020.30393679264198Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air TestingZhaolong Qiao0https://orcid.org/0000-0001-8681-9399Zhengpeng Wang1https://orcid.org/0000-0001-7608-5942Wei Fan2https://orcid.org/0000-0002-9835-4485Xue Zhang3https://orcid.org/0000-0003-0545-9972Steven Gao4https://orcid.org/0000-0002-7402-9223Jungang Miao5https://orcid.org/0000-0002-8772-7602School of Electronic and Information Engineering, Beihang University, Beijing, ChinaSchool of Electronic and Information Engineering, Beihang University, Beijing, ChinaDepartment of Electronic Systems, Aalborg University, Aalborg, DenmarkSchool of Electronic and Information Engineering, Beihang University, Beijing, ChinaSchool of Engineering and Digital Arts, University of Kent, Canterbury, U.K.School of Electronic and Information Engineering, Beihang University, Beijing, ChinaPlane Wave Generator (PWG) has recently attracted great attention from industry and academia for over-the-air (OTA) testing of base station (BS) antennas in the fifth-generation (5G) wireless communication systems. This paper aims to reduce the scattering from the PWG to the antenna under test (AUT), which might be problematic in the near-field OTA testing. First, we introduce a low monostatic radar cross section (RCS) PWG array element design. The PWG is also loaded with pyramidal microwave absorbing material (MAM) to suppress the multi-reflections between the AUT and the PWG. Furthermore, unlike coplanar PWG design generally reported in the literature, a novel non-coplanar design is proposed to realize the destructive interference of the scattered signals from the PWG, thereby significantly reducing the multiple reflections. PWG elements in the non-coplanar design are placed in the propagation direction according to planar and non-planar field distribution on the PWG radiated from the BS AUT. To validate our proposed design, a $4\times 4$ PWG array with a 108 mm element spacing and a non-coplanar structure is developed and experimentally validated. The measured results show that the second incident wave of the proposed non-coplanar PWG array structure based on non-planar field distribution is 7.9 dB lower than that of the classical coplanar PWG design from 2.3 GHz to 3.8 GHz, and 1.9 dB lower than that of the proposed non-coplanar PWG array structure based on planar field distribution, which demonstrates the effectiveness and robustness of our proposed design.https://ieeexplore.ieee.org/document/9264198/5GOTA testingPWGlow scattering designprobe antenna designnon-coplanar PWG structure
collection DOAJ
language English
format Article
sources DOAJ
author Zhaolong Qiao
Zhengpeng Wang
Wei Fan
Xue Zhang
Steven Gao
Jungang Miao
spellingShingle Zhaolong Qiao
Zhengpeng Wang
Wei Fan
Xue Zhang
Steven Gao
Jungang Miao
Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
IEEE Access
5G
OTA testing
PWG
low scattering design
probe antenna design
non-coplanar PWG structure
author_facet Zhaolong Qiao
Zhengpeng Wang
Wei Fan
Xue Zhang
Steven Gao
Jungang Miao
author_sort Zhaolong Qiao
title Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
title_short Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
title_full Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
title_fullStr Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
title_full_unstemmed Low Scattering Plane Wave Generator Design Using a Novel Non-Coplanar Structure for Near-Field Over-the-Air Testing
title_sort low scattering plane wave generator design using a novel non-coplanar structure for near-field over-the-air testing
publisher IEEE
series IEEE Access
issn 2169-3536
publishDate 2020-01-01
description Plane Wave Generator (PWG) has recently attracted great attention from industry and academia for over-the-air (OTA) testing of base station (BS) antennas in the fifth-generation (5G) wireless communication systems. This paper aims to reduce the scattering from the PWG to the antenna under test (AUT), which might be problematic in the near-field OTA testing. First, we introduce a low monostatic radar cross section (RCS) PWG array element design. The PWG is also loaded with pyramidal microwave absorbing material (MAM) to suppress the multi-reflections between the AUT and the PWG. Furthermore, unlike coplanar PWG design generally reported in the literature, a novel non-coplanar design is proposed to realize the destructive interference of the scattered signals from the PWG, thereby significantly reducing the multiple reflections. PWG elements in the non-coplanar design are placed in the propagation direction according to planar and non-planar field distribution on the PWG radiated from the BS AUT. To validate our proposed design, a $4\times 4$ PWG array with a 108 mm element spacing and a non-coplanar structure is developed and experimentally validated. The measured results show that the second incident wave of the proposed non-coplanar PWG array structure based on non-planar field distribution is 7.9 dB lower than that of the classical coplanar PWG design from 2.3 GHz to 3.8 GHz, and 1.9 dB lower than that of the proposed non-coplanar PWG array structure based on planar field distribution, which demonstrates the effectiveness and robustness of our proposed design.
topic 5G
OTA testing
PWG
low scattering design
probe antenna design
non-coplanar PWG structure
url https://ieeexplore.ieee.org/document/9264198/
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AT zhengpengwang lowscatteringplanewavegeneratordesignusinganovelnoncoplanarstructurefornearfieldovertheairtesting
AT weifan lowscatteringplanewavegeneratordesignusinganovelnoncoplanarstructurefornearfieldovertheairtesting
AT xuezhang lowscatteringplanewavegeneratordesignusinganovelnoncoplanarstructurefornearfieldovertheairtesting
AT stevengao lowscatteringplanewavegeneratordesignusinganovelnoncoplanarstructurefornearfieldovertheairtesting
AT jungangmiao lowscatteringplanewavegeneratordesignusinganovelnoncoplanarstructurefornearfieldovertheairtesting
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