High-sensitivity optically modulated scatterer for electromagnetic-field measurement

Ray Rong Lao; Wen Lie Liang; Wen Tron Shay; Richard P. Thompson; Richard A. Dudley; Olivier Merckel; Nicolas Ribière-Tharaud; Jean Charles Bolomey; Jenn-Hawn Tarng

doi:10.1109/TIM.2007.890627

High-sensitivity optically modulated scatterer for electromagnetic-field measurement

Ray Rong Lao^*, Wen Lie Liang, Wen Tron Shay, Richard P. Thompson, Richard A. Dudley, Olivier Merckel, Nicolas Ribière-Tharaud, Jean Charles Bolomey, Jenn-Hawn Tarng

^*Corresponding author for this work

Institute of Communications Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The optically modulated-scatterer (OMS) technique is developed for electromagnetic-field-distribution measurement with minimum disturbance to the field under test. In this paper, an OMS with newly designed photoconductive-switching structure is proposed. The performances of the new OMS are evaluated with a monostatic-field-measurement system. Measurement results show that an improvement of 6 to 8 dB in sensitivity is achieved compared to previous OMS devices. The developed OMS was used in an electromagnetic-field-distribution mapping system to measure the field distribution in a cubic phantom radiated by a mobile phone. The results show the suitability of this OMS for specific-absorption-rate measurement application.

Original language	English
Pages (from-to)	486-490
Number of pages	5
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	56
Issue number	2
DOIs	https://doi.org/10.1109/TIM.2007.890627
State	Published - 1 Apr 2007

Keywords

Optically modulated scatterer (OMS)
Radiated field
Specific absorption rate (SAR)

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10.1109/TIM.2007.890627

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title = "High-sensitivity optically modulated scatterer for electromagnetic-field measurement",

abstract = "The optically modulated-scatterer (OMS) technique is developed for electromagnetic-field-distribution measurement with minimum disturbance to the field under test. In this paper, an OMS with newly designed photoconductive-switching structure is proposed. The performances of the new OMS are evaluated with a monostatic-field-measurement system. Measurement results show that an improvement of 6 to 8 dB in sensitivity is achieved compared to previous OMS devices. The developed OMS was used in an electromagnetic-field-distribution mapping system to measure the field distribution in a cubic phantom radiated by a mobile phone. The results show the suitability of this OMS for specific-absorption-rate measurement application.",

keywords = "Optically modulated scatterer (OMS), Radiated field, Specific absorption rate (SAR)",

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High-sensitivity optically modulated scatterer for electromagnetic-field measurement. / Lao, Ray Rong; Liang, Wen Lie; Shay, Wen Tron; Thompson, Richard P.; Dudley, Richard A.; Merckel, Olivier; Ribière-Tharaud, Nicolas; Bolomey, Jean Charles; Tarng, Jenn-Hawn.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 56, No. 2, 01.04.2007, p. 486-490.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - High-sensitivity optically modulated scatterer for electromagnetic-field measurement

AU - Lao, Ray Rong

AU - Liang, Wen Lie

AU - Shay, Wen Tron

AU - Thompson, Richard P.

AU - Dudley, Richard A.

AU - Merckel, Olivier

AU - Ribière-Tharaud, Nicolas

AU - Bolomey, Jean Charles

AU - Tarng, Jenn-Hawn

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AB - The optically modulated-scatterer (OMS) technique is developed for electromagnetic-field-distribution measurement with minimum disturbance to the field under test. In this paper, an OMS with newly designed photoconductive-switching structure is proposed. The performances of the new OMS are evaluated with a monostatic-field-measurement system. Measurement results show that an improvement of 6 to 8 dB in sensitivity is achieved compared to previous OMS devices. The developed OMS was used in an electromagnetic-field-distribution mapping system to measure the field distribution in a cubic phantom radiated by a mobile phone. The results show the suitability of this OMS for specific-absorption-rate measurement application.

KW - Optically modulated scatterer (OMS)

KW - Radiated field

KW - Specific absorption rate (SAR)

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JO - IEEE Transactions on Instrumentation and Measurement

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ER -

High-sensitivity optically modulated scatterer for electromagnetic-field measurement

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Keywords

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