A Compact UWB MIMO Antenna With Reflector to Enhance Isolation

Author

Roshna, T.K. ; Deepak, U. ; Sajitha, V.R. ; Vasudevan, K. ; Mohanan, P.

Author_Institution

Dept. of Electron., Cochin Univ. of Sci. & Technol., Cochin, India

Volume

63

Issue

4

fYear

2015

fDate

Apr-15

Firstpage

1873

Lastpage

1877

Abstract

A compact ultrawideband (UWB) multiple-input multiple-output (MIMO) antenna, with high isolation, is proposed for portable UWB MIMO systems. Two coplanar stripline-fed staircase-shaped radiating elements are connected back-to-back. The prototype is designed on a substrate of dielectric constant 4.4 with an overall dimension of 25 mm × 30 mm × 1.6 mm. This antenna configuration with an isolating metal strip placed in between the two radiating elements ensures high isolation in the entire UWB band. The proposed antenna exhibits a good 2:1 VSWR impedance bandwidth covering the entire UWB band (3.1-10.6 GHz) with a high isolation better than 20 dB, peak gain of 5.2 dBi, peak efficiency of 90%, and guaranteed value of envelope correlation coefficient (ECC) ≤0.1641.

Keywords

MIMO communication; antenna feeds; coplanar waveguides; microstrip antenna arrays; strip lines; ultra wideband antennas; ECC; UWB band; VSWR impedance bandwidth; compact UWB MIMO antenna; compact ultrawideband multiple-input multiple-output antenna; coplanar stripline-fed staircase-shaped radiating elements; envelope correlation coefficient; frequency 3.1 GHz to 10.6 GHz; isolating metal strip; Antenna measurements; Dipole antennas; MIMO; Metals; Reflector antennas; Ultra wideband antennas; Compact; Coplanar Stripline; MIMO; UWB; coplanar stripline; multiple-input multiple-output (MIMO); ultrawideband (UWB);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2398455

Filename

7027826