An ultrawideband antenna for portable MIMO terminals. Issue 1 (January 2016)

• Record Type: Journal Article
• Authors: Wani, Zamir; Vishwakarma, Dinesh Kumar
• Is Part Of: Microwave and optical technology letters. Volume 58:Issue 1(2016:Jan.)
• Page Start: 51
• Page End: 57
• Publication Date: 2016-01
• Subjects: diversity -- envelope correlation coefficient -- ground stub -- isolation -- multiple‐input‐multiple‐output -- ultrawideband; Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.29498
• Languages: English
• ISSNs: 0895-2477

Abstract

ABSTRACT: A compact printed ultrawideband (UWB) antenna system used to combat multipath fading has been proposed and investigated. The antenna consisting of two shovel‐shaped monopole antenna elements (AE) on a low loss substrate with dimensions 35 × 30 mm 2 can be used for multi‐input‐multi‐output (MIMO)/diversity applications. Both the monopole antennas are fed with microstrip lines, matched to 50 Ω lines at each port. To reduce the mutual coupling, two F‐shaped ground stubs are added to the ground plane and rectangular slots have been made to ensure proper impedance matching. Measured and simulated results show that the antenna system covers most of UWB with isolation greater than 22 dB. A low value of measured envelops correlation coefficient less than 0.005 is achieved throughout the entire band of interest (3.1–10.6 GHz). The proposed antenna satisfies all the requirements of an MIMO antenna used for UWB, thus is a potential candidate for MIMO/diversity applications in UWB communication. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:51–56, 2016