Title :
Design of planar wideband MIMO antenna for mobile phones
Author :
Wen-Ao Li ; Zhi-Hong Tu ; Qing-Xin Chu
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
fDate :
March 30 2015-April 1 2015
Abstract :
This paper presents a dual-port planar multiple-input-multiple-output (MIMO) antenna with wide bandwidth. The proposed MIMO antenna element consists of a monopole and a step impedance resonator (SIR) stub which extends from the ground and is coupling fed by the monopole. A slot is etched on the ground and a neutralization line is connected with the two antenna elements for decoupling. The simulated results show that the MIMO antenna achieves a wide bandwidth of 105.7% from 0.87 GHz to 2.82GHz, fully covering the 2G bands of GSM900/ GSM1800/GSM1900, 3G bands of TD-SCDMA/WCDMA/ CDMA2000 and most of the 4G (LTE) bands. The isolation is better than 12.5 dB in the lower band and 15dB in the higher band. Besides, the envelope correlation coefficient and mean effective gain are also studied. The planar structure and good diversity performance make the MIMO antenna very suitable for mobile terminals like smart phones.
Keywords :
MIMO communication; UHF antennas; UHF resonators; antenna feeds; broadband antennas; diversity reception; mobile antennas; mobile handsets; monopole antenna arrays; planar antenna arrays; slot antenna arrays; 4G band; CDMA2000 3G band; GSM1800 2G band; GSM1900 2G band; GSM900 2G band; SIR stub; TD-SCDMA 3G band; TD-WCDMA 3G band; diversity performance; dual port planar multiple input multiple output antenna; envelope correlation coefficient; frequency 0.87 GHz to 2.82 GHz; mobile phone; monopole stub; neutralization line; planar wideband MIMO antenna; step impedance resonator stub; wide bandwidth; Global Positioning System; Indexes; MIMO; Transmitting antennas; Wireless communication; 2G/3G/4G; MIMO antenna; mobile phone; multiple-input-multiple-output; planar; wideband;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164530
