A Compact Wideband MIMO Antenna With Two Novel Bent Slits

被引:144
作者
Li, Jian-Feng [1 ]
Chu, Qing-Xin [1 ]
Huang, Tian-Gui [1 ]
机构
[1] S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
关键词
Correlation coefficient; diversity antenna; diversity gain; multiple-input multiple-output (MIMO) antenna; phone antenna; total radiation power; wideband antenna; PRINTED DIVERSITY ANTENNA; PERFORMANCE; SYSTEM; ARRAY;
D O I
10.1109/TAP.2011.2173452
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 compact wideband multiple-input-multiple-output (MIMO) antenna is presented. The MIMO antenna consists of two symmetric monopoles with edge-to-edge separation of nearly 0.083 lambda(0) at 2.5 GHz. Two novel bent slits are etched into the ground plane. At the lower frequencies, the bent slits can reduce the mutual coupling and have slight effect on the reflection coefficient. At the higher frequencies, the slits can be considered as slit antennas to widen the impedance bandwidth because the two slits are coupled fed by two 50-Omega microstrip lines, respectively. Two triangles are cut from the ground plane. In this way, the reflection coefficient and isolation of the two slit antennas can be improved. A bandwidth of 92.7% with vertical bar S-11 vertical bar <= -10 dB and vertical bar S-21 vertical bar <= -18 dB from 2.4 to 6.55 GHz is achieved. In order to provide quantifications for the performance of the MIMO antenna in real-world usage conditions, the effects of human hand and head on the performance of the MIMO antenna are investigated. The results show that the MIMO antenna serving as a phone antenna can provide spatial and pattern diversity to combat multipath fading.
引用
收藏
页码:482 / 489
页数:8
相关论文
共 20 条
[1]  
[Anonymous], SPEAG SEMCAD X 13 4
[2]  
Azremi A.A.H., 2010, P ANT PROP EUR C, P1
[3]   Exact representation of antenna system diversity performance from input parameter description [J].
Blanch, S ;
Romeu, J ;
Corbella, I .
ELECTRONICS LETTERS, 2003, 39 (09) :705-707
[4]   Two-antenna receive diversity performance in indoor environment [J].
Bolin, T ;
Derneryd, A ;
Kristensson, G ;
Plicanic, V ;
Ying, Z .
ELECTRONICS LETTERS, 2005, 41 (22) :1205-1206
[5]   Dual-band printed diversity antenna for 2.4/5.2-Ghz WLAN application [J].
Chi, GM ;
Li, BH ;
Qi, DS .
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2005, 45 (06) :561-563
[6]   A novel dual-band printed diversity antenna for mobile terminals [J].
Ding, Yuan ;
Du, Zhengwei ;
Gong, Ke ;
Feng, Zhenghe .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2007, 55 (07) :2088-2096
[7]   On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas [J].
Foschini G.J. ;
Gans M.J. .
Wireless Personal Communications, 1998, 6 (3) :311-335
[8]   Design and performance investigation of a dual-element PIFA array at 2.5 GHz for MIMO terminal [J].
Gao, Yue ;
Chen, Xiaodong ;
Ying, Zhinong ;
Parini, Clive .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2007, 55 (12) :3433-3441
[9]   The significance of radiation efficiencies when using S-parameters to calculate the received signal correlation from two antennas [J].
Hallbjörner, P .
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2005, 4 :97-99
[10]  
*IEEE, 2003, 1528 IEEE