A New Compact Wideband MIMO Antenna—The Double-Sided Tapered Self-Grounded Monopole Array

Author

Al-Rawi, Ali ; Hussain, Amir ; Jian Yang ; Franzen, M. ; Orlenius, Charlie ; Kishk, Ahmed A.

Author_Institution

Dept. of Signals & Syst., Chalmers Univ. of Technol., Gothenburg, Sweden

Volume

62

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

3365

Lastpage

3369

Abstract

We present a new compact wideband multiple input multiple output (MIMO) antenna-the double-sided 4-port arm-tapered self-grounded monopole array, briefly referred to as the butterfly antenna, in the communication. The antenna is very compact with low correlation between ports and high diversity gain. The genetic algorithm optimization scheme has been employed in the design. Simulation results have been verified against measurements. The measured reflection coefficients at all ports are below -7 dB over 0.5-9 GHz and below -4.5 dB over 0.4-0.5 GHz and 9-15 GHz. The measured correlation coefficients are below 0.4 over 0.4-15 GHz and lower than 0.1 in most of the frequency band. This new MIMO antenna is developed as a transmit antenna in reverberation chambers, and we believe that it will find more applications in other systems, such as micro base station antennas in wireless communication systems.

Keywords

MIMO communication; UHF antennas; broadband antennas; diversity reception; genetic algorithms; microwave antenna arrays; monopole antenna arrays; reverberation chambers; MIMO antenna; butterfly antenna; compact wideband MIMO antenna; compact wideband multiple input multiple output; diversity gain; double-sided 4-port arm-tapered self-grounded monopole array; double-sided tapered self-grounded monopole array; frequency 0.4 GHz to 0.5 GHz; frequency 0.4 GHz to 15 GHz; frequency 0.5 GHz to 9 GHz; frequency 9 GHz to 15 GHz; genetic algorithm optimization scheme; microbase station antennas; reverberation chambers; transmit antenna; wireless communication systems; Antenna measurements; Antennas; Correlation; Diversity methods; Frequency measurement; Impedance; MIMO; Correlation; UWB antenna; embedded radiation efficiency; genetic algorithm (GA) optimization; multiple input multiple output (MIMO) antenna; self-grounded antenna;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2014.2309985

Filename

6756971