Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz

This paper aims to clarify the accuracy of a method for assessing the power density in close proximity to a wireless communication device operating above 6 GHz for the assessment of compliance with radio-frequency exposure guidelines. We focused on a near-field reconstruction technique that estimate...

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Autores principales:	Kensuke Sasaki, Kun Li, Jerdvisanop Chakarothai, Takahiro Iyama, Teruo Onishi, Soichi Watanabe
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2019
Materias:	5G mobile communication compliance assessment health and safety power density reconstruction Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/9bec1742ab184afcbe7834a2ffc44778
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spelling	oai:doaj.org-article:9bec1742ab184afcbe7834a2ffc447782021-11-11T00:01:01ZError Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz2169-353610.1109/ACCESS.2019.2891939https://doaj.org/article/9bec1742ab184afcbe7834a2ffc447782019-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/8610188/https://doaj.org/toc/2169-3536This paper aims to clarify the accuracy of a method for assessing the power density in close proximity to a wireless communication device operating above 6 GHz for the assessment of compliance with radio-frequency exposure guidelines. We focused on a near-field reconstruction technique that estimates the power density in close proximity to a wireless communication device using the results of electric field measurement at a plane several wavelengths away from the device. In this paper, the reconstruction technique was first validated by comparing the results evaluated using this technique with those obtained by computational simulation for the case of a standard horn antenna. Second, the reconstruction errors of the technique were assessed using ten planar array antennas at frequencies from 15 to 100 GHz. Reconstruction errors no larger than 0.35 dB were obtained for the maximum spatially averaged power density at a separation distance of over 0.15λ from the antennas using an averaging area of λ2 or larger, where λ denotes the wavelength. Finally, the requirement for electric field measurement was also examined, where the combined error for the compliance assessment of the power density was suggested for an actual testing scenario. These results support the standardization of compliance assessment techniques for wireless communication devices operating above 6 GHz, which are expected to be introduced in the near future.Kensuke SasakiKun LiJerdvisanop ChakarothaiTakahiro IyamaTeruo OnishiSoichi WatanabeIEEEarticle5G mobile communicationcompliance assessmenthealth and safetypower densityreconstructionElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 7, Pp 11591-11598 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	5G mobile communication compliance assessment health and safety power density reconstruction Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	5G mobile communication compliance assessment health and safety power density reconstruction Electrical engineering. Electronics. Nuclear engineering TK1-9971 Kensuke Sasaki Kun Li Jerdvisanop Chakarothai Takahiro Iyama Teruo Onishi Soichi Watanabe Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
description	This paper aims to clarify the accuracy of a method for assessing the power density in close proximity to a wireless communication device operating above 6 GHz for the assessment of compliance with radio-frequency exposure guidelines. We focused on a near-field reconstruction technique that estimates the power density in close proximity to a wireless communication device using the results of electric field measurement at a plane several wavelengths away from the device. In this paper, the reconstruction technique was first validated by comparing the results evaluated using this technique with those obtained by computational simulation for the case of a standard horn antenna. Second, the reconstruction errors of the technique were assessed using ten planar array antennas at frequencies from 15 to 100 GHz. Reconstruction errors no larger than 0.35 dB were obtained for the maximum spatially averaged power density at a separation distance of over 0.15λ from the antennas using an averaging area of λ2 or larger, where λ denotes the wavelength. Finally, the requirement for electric field measurement was also examined, where the combined error for the compliance assessment of the power density was suggested for an actual testing scenario. These results support the standardization of compliance assessment techniques for wireless communication devices operating above 6 GHz, which are expected to be introduced in the near future.
format	article
author	Kensuke Sasaki Kun Li Jerdvisanop Chakarothai Takahiro Iyama Teruo Onishi Soichi Watanabe
author_facet	Kensuke Sasaki Kun Li Jerdvisanop Chakarothai Takahiro Iyama Teruo Onishi Soichi Watanabe
author_sort	Kensuke Sasaki
title	Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
title_short	Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
title_full	Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
title_fullStr	Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
title_full_unstemmed	Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz
title_sort	error analysis of a near-field reconstruction technique based on plane wave spectrum expansion for power density assessment above 6 ghz
publisher	IEEE
publishDate	2019
url	https://doaj.org/article/9bec1742ab184afcbe7834a2ffc44778
work_keys_str_mv	AT kensukesasaki erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz AT kunli erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz AT jerdvisanopchakarothai erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz AT takahiroiyama erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz AT teruoonishi erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz AT soichiwatanabe erroranalysisofanearfieldreconstructiontechniquebasedonplanewavespectrumexpansionforpowerdensityassessmentabove6ghz
_version_	1718439608574803968

Error Analysis of a Near-Field Reconstruction Technique Based on Plane Wave Spectrum Expansion for Power Density Assessment Above 6 GHz

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