Asynchronous electric field visualization using an integrated multichannel electro-optic probe

Abstract The higher the frequency, the more complex the scattering, diffraction, multiple reflection, and interference that occur in practical applications such as radar-installed vehicles and transmitter-installed mobile modules, etc. Near-field measurement in “real situations” is important for not...

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Autores principales:	Shintaro Hisatake, Junpei Kamada, Yuya Asano, Hirohisa Uchida, Makoto Tojo, Yoichi Oikawa, Kunio Miyaji
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c499ee27bce140f98c9e7399c185bad0
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spelling	oai:doaj.org-article:c499ee27bce140f98c9e7399c185bad02021-12-02T18:37:07ZAsynchronous electric field visualization using an integrated multichannel electro-optic probe10.1038/s41598-020-73538-72045-2322https://doaj.org/article/c499ee27bce140f98c9e7399c185bad02020-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-73538-7https://doaj.org/toc/2045-2322Abstract The higher the frequency, the more complex the scattering, diffraction, multiple reflection, and interference that occur in practical applications such as radar-installed vehicles and transmitter-installed mobile modules, etc. Near-field measurement in “real situations” is important for not only investigating the origin of unpredictable field distortions but also maximizing the system performance by optimal placement of antennas, modules, etc. Here, as an alternative to the previous vector-network-analyzer-based measurement, we propose a new asynchronous approach that visualizes the amplitude and phase distributions of electric near-fields three-dimensionally without placing a reference probe at a fixed point or plugging a cable to the RF source to be measured. We demonstrate the visualization of a frequency-modulated continuous wave (FMCW) signal (24 GHz ± 40 MHz, modulation cycle: 2.5 ms), and show that the measured radiation patterns of a standard horn antenna agree well with the simulation results. We also demonstrate a proof-of-concept experiment that imitates a realistic situation of a bumper installed vehicle to show how the bumper alters the radiation patterns of the FMCW radar signal. The technique is based on photonics and enables measuring in the microwave to millimeter-wave range.Shintaro HisatakeJunpei KamadaYuya AsanoHirohisa UchidaMakoto TojoYoichi OikawaKunio MiyajiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shintaro Hisatake Junpei Kamada Yuya Asano Hirohisa Uchida Makoto Tojo Yoichi Oikawa Kunio Miyaji Asynchronous electric field visualization using an integrated multichannel electro-optic probe
description	Abstract The higher the frequency, the more complex the scattering, diffraction, multiple reflection, and interference that occur in practical applications such as radar-installed vehicles and transmitter-installed mobile modules, etc. Near-field measurement in “real situations” is important for not only investigating the origin of unpredictable field distortions but also maximizing the system performance by optimal placement of antennas, modules, etc. Here, as an alternative to the previous vector-network-analyzer-based measurement, we propose a new asynchronous approach that visualizes the amplitude and phase distributions of electric near-fields three-dimensionally without placing a reference probe at a fixed point or plugging a cable to the RF source to be measured. We demonstrate the visualization of a frequency-modulated continuous wave (FMCW) signal (24 GHz ± 40 MHz, modulation cycle: 2.5 ms), and show that the measured radiation patterns of a standard horn antenna agree well with the simulation results. We also demonstrate a proof-of-concept experiment that imitates a realistic situation of a bumper installed vehicle to show how the bumper alters the radiation patterns of the FMCW radar signal. The technique is based on photonics and enables measuring in the microwave to millimeter-wave range.
format	article
author	Shintaro Hisatake Junpei Kamada Yuya Asano Hirohisa Uchida Makoto Tojo Yoichi Oikawa Kunio Miyaji
author_facet	Shintaro Hisatake Junpei Kamada Yuya Asano Hirohisa Uchida Makoto Tojo Yoichi Oikawa Kunio Miyaji
author_sort	Shintaro Hisatake
title	Asynchronous electric field visualization using an integrated multichannel electro-optic probe
title_short	Asynchronous electric field visualization using an integrated multichannel electro-optic probe
title_full	Asynchronous electric field visualization using an integrated multichannel electro-optic probe
title_fullStr	Asynchronous electric field visualization using an integrated multichannel electro-optic probe
title_full_unstemmed	Asynchronous electric field visualization using an integrated multichannel electro-optic probe
title_sort	asynchronous electric field visualization using an integrated multichannel electro-optic probe
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/c499ee27bce140f98c9e7399c185bad0
work_keys_str_mv	AT shintarohisatake asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT junpeikamada asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT yuyaasano asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT hirohisauchida asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT makototojo asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT yoichioikawa asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe AT kuniomiyaji asynchronouselectricfieldvisualizationusinganintegratedmultichannelelectroopticprobe
_version_	1718377824416432128

Asynchronous electric field visualization using an integrated multichannel electro-optic probe

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