•  
  •  
 

Turkish Journal of Electrical Engineering and Computer Sciences

DOI

10.3906/elk-2004-132

Abstract

This study presents a compact dual element wearable ultrawideband (UWB) multi-in multi-out (MIMO)antenna with increased port isolation. The suggested design consists of a jeans substrate in which a tree-fashioned stubcomprising of eight branches is introduced in the middle position of the partially etched antenna ground for improvingthe characteristics of port isolation. The proposed design occupies the frequency spectrum operating from 1.71 to12.63 GHz (impedance bandwidth of around 152.3%) and satisfies the bandwidth demands for WiMAX (3.2-3.8 GHz),WLAN (5.15-5.35/5.72-4.85 GHz), the C Downlink-uplink bands (3.7-4.2/5.9-6.425GHz), ITU bands (8-8.5GHz) andthe downlink defense band (7.2-7.5GHz). The antenna is able to maintain isolation between the ports>22dB across theentire UWB frequency spectrum. The coe?icient of the envelope correlation for the whole operating band was observedto be9.9. The channel power loss of the proposed wearable UWB MIMOantenna is found to be

Keywords

Wearable antennas, diversity gain, multi-in-multi-out, total active reflection coefficient, ultrawidebandspectrum

First Page

897

Last Page

912

Download

Share

COinS