TY - JOUR
T1 - A High-Order Model for Fast Estimation of Electromagnetic Absorption Induced by Multiple Transmitters in Portable Devices
AU - Li, Jian
AU - Yan, Su
AU - Liu, Yanan
AU - Hochwald, Bertrand M.
AU - Jin, Jian Ming
N1 - Funding Information:
Manuscript received January 25, 2017; revised June 6, 2017; accepted July 3, 2017. Date of publication July 17, 2017; date of current version November 30, 2017. This work was supported by the National Science Foundation under grant CCF-1403458. (Corresponding author: Su Yan.) J. Li is with the Centre for RFIC and System Technology, School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China, and also with the Center for Computational Electromagnetics, Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801-2991 USA (e-mail: lj001@uestc.edu.cn; jianli68@illinois.edu).
Publisher Copyright:
© 1963-2012 IEEE.
PY - 2017/12
Y1 - 2017/12
N2 - In the development of 5G communication systems, multiantenna transmitting architectures and millimeter-wave operating frequency bands are effective ways to improve the communication data rate. In order to estimate the electromagnetic exposure under multiantenna transmitters installed in portable devices working in long-term evolution (LTE) and millimeter-wave bands, this paper generalizes a low-order model to higher orders based on the Fourier series expansion for a fast and accurate evaluation and prediction of electromagnetic absorption (EA) as a function of the phase difference among multiple transmitters. Several numerical and experimental examples are given to demonstrate the effectiveness of the proposed high-order model in multiple LTE, 5G, and millimeter-wave communication bands. With the excellent capability of calculating and predicting EA with a low error, this high-order model can be used to improve the bio-electromagnetic performances of multiantenna portable devices when combined with other communication technologies.
AB - In the development of 5G communication systems, multiantenna transmitting architectures and millimeter-wave operating frequency bands are effective ways to improve the communication data rate. In order to estimate the electromagnetic exposure under multiantenna transmitters installed in portable devices working in long-term evolution (LTE) and millimeter-wave bands, this paper generalizes a low-order model to higher orders based on the Fourier series expansion for a fast and accurate evaluation and prediction of electromagnetic absorption (EA) as a function of the phase difference among multiple transmitters. Several numerical and experimental examples are given to demonstrate the effectiveness of the proposed high-order model in multiple LTE, 5G, and millimeter-wave communication bands. With the excellent capability of calculating and predicting EA with a low error, this high-order model can be used to improve the bio-electromagnetic performances of multiantenna portable devices when combined with other communication technologies.
KW - 5G communication
KW - electromagnetic absorption (EA)
KW - high-order model
KW - millimeter-wave communication
KW - multiantenna transmitter
KW - portable devices
KW - power loss density (PLD)
KW - specific absorption rate (SAR)
UR - http://www.scopus.com/inward/record.url?scp=85028942730&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85028942730&partnerID=8YFLogxK
U2 - 10.1109/TAP.2017.2728090
DO - 10.1109/TAP.2017.2728090
M3 - Article
AN - SCOPUS:85028942730
SN - 0018-926X
VL - 65
SP - 6768
EP - 6778
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 12
M1 - 7982805
ER -