A High-Order Model for Fast Estimation of Electromagnetic Absorption Induced by Multiple Transmitters in Portable Devices

作者：Li, Jian; Yan, Su^*; Liu, Yanan; Hochwald, Bertrand M.; Jin, Jian-Ming

来源：IEEE Transactions on Antennas and Propagation, 2017, 65(12): 6768-6778.

DOI：10.1109/TAP.2017.2728090

• 5G communication
• electromagnetic absorption (EA)
• high-order model
• millimeter-wave communication
• multiantenna transmitter
• portable devices
• power loss density (PLD)
• specific absorption rate (SAR)

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.

• 出版日期2017-12
• 单位电子科技大学