Low-SAR MIMO Antenna Array Design Using Characteristic Modes for 5G Mobile Phones

被引：24

作者：

Zhang, Huan Huan ^{[1
]}

Yu, Guo Guo ^{[1
]}

Liu, Xin Zhi ^{[1
]}

Cheng, Guang Shang ^{[2
]}

Xu, Yun Xue ^{[1
]}

Liu, Ying ^{[1
]}

Shi, Guang Ming ^{[3
]}

机构：

[1] Xidian Univ, Natl Key Lab Antennas & Microwave Technol, Xian 710071, Peoples R China

[2] Anhui Univ, Minist Educ, Key Lab Intelligent Comp & Signal Proc, Ilefei 230601, Peoples R China

[3] Xidian Univ, Sch Artificial Intelligence, Xian 710071, Peoples R China

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2022年 / 70卷 / 04期

关键词：

Antenna arrays; Dipole antennas; MIMO communication; Antennas; Current distribution; Mobile antennas; Antenna measurements; 5G; low specific absorption rate (SAR); multiple-input and multiple-output (MIMO) antenna array; PATTERN-DIVERSITY; HANDSET; SYSTEM; BANDS;

D O I：

10.1109/TAP.2021.3121174

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low specific absorption rate (SAR) multiple-input and multiple-output (MIMO) antenna array is designed for 5G mobile phones based on the theory of characteristic modes (TCMs). First, a geometrically symmetric dipole antenna is analyzed using TCM. The modal currents with symmetrical and reverse distributions are selected and excited to obtain the low-SAR antenna element. Then the antenna element is further optimized, and eight antenna elements constitute an MIMO array. The -6 dB impedance bandwidth of the proposed MIMO array is from 3.4 to 3.6 GHz. The isolations between different antenna elements are higher than 16 dB. Their total efficiencies range from 48% to 67%. Its envelope correlation coefficient (ECC) is lower than 0.08. The 1 g spatial-average head SAR and 10 g spatial-average body SAR of the proposed antenna are simulated and measured.

引用

页码：3052 / 3057

页数：6

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