A COMPACT UWB PRINTED MONOPOLE MIMO ANTENNA WITH MUTUAL COUPLING REDUCTION

Hossein Babashah | Hamid Reza Hassani | Sajad Mohammad-Ali-Nezhad

---

URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=106364
Date :  2019/01/01
Publish in :    Progress In Electromagnetics Research C
DOI :  https://doi.org/10.2528/pierc19010905
Link :  http://www.jpier.org/PIERC/pierc91/05.19010905.pdf
Keywords :Compact, UWB, Monopole, MIMO, Antenna, Mutual, Coupling

Abstract :

---

A compact multiple-input-multiple-output (MIMO) antenna with very high isolation is proposed for ultrawideband (UWB) applications. The antenna with a compact size of 30.1 × 20.5mm ) consists of two planar-monopole antenna elements. It is found that isolation of more than 25 dB can be achieved between two parallel monopole antenna elements. For the low- frequency isolation, an efficient technique of bending the feed-line and applying a new protruded ground is introduced. To increase isolation, a design based on suppressing surface wave, near-field, and far-field coupling is applied. The simulation and measurement results of the proposed antenna with the good agreement are presented and show a bandwidth with S 11 ≤−10 dB, S ≤−25 dB ranged from 3.1 to 10.6 GHz making the proposed antenna a good candidate for UWB MIMO systems.