Simplified assessment of specific absorption rate (SAR) for MIMO terminals

Hui Li; Buon Kiong Lau

doi:10.1109/APS.2015.7305003

Simplified assessment of specific absorption rate (SAR) for MIMO terminals

Hui Li, Buon Kiong Lau

Research output: Chapter in Book/Report/Conference proceeding › Paper in conference proceeding › peer-review

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Abstract

Evaluating SAR for multi-antennas is difficult and impractical due to the arbitrary power allocation and phase of the electric fields from different antennas causing the total field to change randomly. In this context, a simplified approach was recently proposed for assessing SAR when more than one antenna is transmitting simultaneously. The metric of time averaged simultaneous peak SAR (TASPS) was derived for the purpose of showing that only the stand-alone SAR for each antenna needs to be evaluated in order to verify if the SAR for multi-antenna transmissions also stays within the exposure limit. In this paper, we briefly review the derivation and illustrate the physical mechanism underlying this result for a two-antenna prototype using stand-alone and simultaneous SAR distributions.

Original language	English
Title of host publication	IEEE Antennas and Propagation Society International Symposium, 2015
Publisher	IEEE - Institute of Electrical and Electronics Engineers Inc.
Number of pages	2
ISBN (Electronic)	978-1-4799-7815-1
ISBN (Print)	978-1-4799-7816-8
DOIs	https://doi.org/10.1109/APS.2015.7305003
Publication status	Published - 2015
Event	IEEE International Symposium on Antennas and Propagation, 2015 - Vancouver, Canada Duration: 2015 Jul 19 → 2015 Jul 24

Conference

Conference	IEEE International Symposium on Antennas and Propagation, 2015
Abbreviated title	USNC/URSI
Country/Territory	Canada
City	Vancouver
Period	2015/07/19 → 2015/07/24

Subject classification (UKÄ)

Electrical Engineering, Electronic Engineering, Information Engineering

Access to Document

10.1109/APS.2015.7305003

final_versionAccepted author manuscript, 254 KB

EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications
Sunesson, A. (Researcher), Li, H. (Researcher), VASILEV, I. (Researcher), Lindstrand, J. (Researcher), Tian, R. (Researcher), Zhang, S. (Researcher), Miers, Z. (Researcher), Lau, B. K. (Researcher), Plicanic, V. (Researcher) & Sjöland, H. (Researcher)
2011/10/01 → 2019/12/31
Project: Research

Cite this

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title = "Simplified assessment of specific absorption rate (SAR) for MIMO terminals",

abstract = "Evaluating SAR for multi-antennas is difficult and impractical due to the arbitrary power allocation and phase of the electric fields from different antennas causing the total field to change randomly. In this context, a simplified approach was recently proposed for assessing SAR when more than one antenna is transmitting simultaneously. The metric of time averaged simultaneous peak SAR (TASPS) was derived for the purpose of showing that only the stand-alone SAR for each antenna needs to be evaluated in order to verify if the SAR for multi-antenna transmissions also stays within the exposure limit. In this paper, we briefly review the derivation and illustrate the physical mechanism underlying this result for a two-antenna prototype using stand-alone and simultaneous SAR distributions.",

author = "Hui Li and Lau, {Buon Kiong}",

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language = "English",

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booktitle = "IEEE Antennas and Propagation Society International Symposium, 2015",

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note = "IEEE International Symposium on Antennas and Propagation, 2015, USNC/URSI ; Conference date: 19-07-2015 Through 24-07-2015",

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T1 - Simplified assessment of specific absorption rate (SAR) for MIMO terminals

AU - Li, Hui

AU - Lau, Buon Kiong

PY - 2015

Y1 - 2015

N2 - Evaluating SAR for multi-antennas is difficult and impractical due to the arbitrary power allocation and phase of the electric fields from different antennas causing the total field to change randomly. In this context, a simplified approach was recently proposed for assessing SAR when more than one antenna is transmitting simultaneously. The metric of time averaged simultaneous peak SAR (TASPS) was derived for the purpose of showing that only the stand-alone SAR for each antenna needs to be evaluated in order to verify if the SAR for multi-antenna transmissions also stays within the exposure limit. In this paper, we briefly review the derivation and illustrate the physical mechanism underlying this result for a two-antenna prototype using stand-alone and simultaneous SAR distributions.

AB - Evaluating SAR for multi-antennas is difficult and impractical due to the arbitrary power allocation and phase of the electric fields from different antennas causing the total field to change randomly. In this context, a simplified approach was recently proposed for assessing SAR when more than one antenna is transmitting simultaneously. The metric of time averaged simultaneous peak SAR (TASPS) was derived for the purpose of showing that only the stand-alone SAR for each antenna needs to be evaluated in order to verify if the SAR for multi-antenna transmissions also stays within the exposure limit. In this paper, we briefly review the derivation and illustrate the physical mechanism underlying this result for a two-antenna prototype using stand-alone and simultaneous SAR distributions.

U2 - 10.1109/APS.2015.7305003

DO - 10.1109/APS.2015.7305003

M3 - Paper in conference proceeding

SN - 978-1-4799-7816-8

BT - IEEE Antennas and Propagation Society International Symposium, 2015

PB - IEEE - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE International Symposium on Antennas and Propagation, 2015

Y2 - 19 July 2015 through 24 July 2015

ER -

Simplified assessment of specific absorption rate (SAR) for MIMO terminals

Abstract

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EIT_Optantsys Novel Antenna System Design Paradigm for High Performance Mobile Communications

Cite this