An Isolation Enhanced, Printed, Low-Profile UWB-MIMO Antenna with Unique Dual Band-Notching Features for WLAN and WiMAX

Abstract

Here, a low-profile, printed, ultra-wideband (UWB), multiple-input–multiple-output (MIMO) antenna with unique dual band-notching feature for selective elimination of the interferences from the existing WLAN and WiMAX bands has been investigated. The antenna proposed here consists of two fractal radiators and a defected ground structure. The designed antenna shows an ultra-wide frequency bandwidth of 8.6 GHz (2.0–10.6 GHz). A slot having the shape of the English Letter “U” has been finely etched from the surface of the fractal radiators in order to realize a frequency band-notch, centered at 3.5 GHz (WiMAX). A second band-notch, centered at 5.2 GHz (WLAN) has been obtained by adding horizontal stubs. The prevailing issue of mutual isolation between the adjacent radiating elements has been significantly enhanced by incorporating a vertical decoupling strip at the rear side of the proposed two-port diversity MIMO antenna. The antenna proposed here is compact in shape, having a dimension of 26 × 35 mm². Simulated and measured results show a good match, justifying its applicability in the modern communication era.

KEYWORDS:

• Band-notched feature
• Isolation enhanced
• Low-profile
• MIMO antenna
• Printed
• UWB

Additional information

Notes on contributors

Ankan Bhattacharya

Ankan Bhattacharya obtained BTech and MTech degrees in electronics and communication engineering from West Bengal University of Technology, India. He is a PhD research scholar in the Department of Electronics and Communication Engineering at National Institute of Technology, Durgapur, India. He is also associated with Mallabhum Institute of Technology, Bishnupur, India, as a faculty member of the Electronics and Communication Engineering Department. He is a member of FOSET, India and IEEE, USA. His field of research is design and analysis of compact, slotted antennas for wireless applications. Corresponding author. Email: [email protected]

Bappadittya Roy

Bappadittya Roy obtained BTech and MTech degrees in electronics and communication engineering from West Bengal University of Technology, India. He obtained his PhD degree from National Institute of Technology, Durgapur, India. He is presently associated with Madanapalle Institute of Technology & Science, Madanapalle, Andhra Pradesh, India as a senior assistant professor of Electronics and Communication Engineering Department. Email: [email protected]

Santosh K. Chowdhury

Santosh Kumar Chowdhury received his BE, ME and PhD degrees from Jadavpur University, Kolkata, India. He was associated with Jadavpur University, Kolkata, India as a professor of Electronics and Telecommunication Engineering Department. He has supervised over 18 PhD students and has published more than 150 national and international journal and conference articles. Email: [email protected]

Anup K. Bhattacharjee

Anup Kumar Bhattacharjee received his BE degree from BE College, Shibpur, India (presently IIEST, Shibpur). He received ME and PhD degrees from Jadavpur University, Kolkata, India. Presently, he is associated with National Institute of Technology, Durgapur, West Bengal, India as a senior professor of Electronics and Communication Engineering Department. He has successfully supervised over 13 PhD students and has published over 130 articles in national and international journals, magazines and conferences. Email: [email protected]