A novel UWB MIMO antenna array with band notch characteristics using parasitic decoupler

ABSTRACT

This paper presents a 4 × 4 multiple-input–multiple-output (MIMO) antenna array for ultra-wide band (UWB) applications with 5.5 GHz wireless local area network (WLAN) band rejection characteristics. The single UWB antenna element consists of modified patch antenna with partial ground plane. WLAN band has been rejected by etching a U-shaped slot in the antenna element. The antenna elements have been arranged in a planar geometry where each element is orthogonal to its adjacent element. A fan-shaped parasitic decoupler, that consists of four strip lines connected with a central square-shaped conductor, is placed among the antenna elements. The dimensions of the antenna array are 67 × 67 × 1.6 mm³. Full wave simulations and experiments have been conducted where measured peak gain and average isolation were 8.1 and −20 dB, respectively. The calculated envelop correction coefficient was less than 0.01.

KEYWORDS:

• Band rejection
• isolation
• multiple-input–multiple-output (MIMO)
• ultra-wide band (UWB)

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Muhammad Mateen Hassan

Muhammad Mateen Hassan received his Electronics Engineering degree from the Wah Engineering College, University of Wah, Pakistan, in 2009 and the MS degree in Electrical Engineering from the Technische Universität Chemnitz, Germany, in 2013. Currently, he is pursuing his PhD from National University of Sciences and Technology, Islamabad, Pakistan. His research interests are in the field of MIMO antennas, reconfigurable antennas, micro-electro-mechanical systems (MEMS) for RF applications and nano Technology.

Maryam Rasool

Maryam Rasool completed her BS degree in Electrical Engineering from COMSATS Institute of Information Technology, Pakistan in 2012. She obtained her MS Electrical Engineering Degree in 2015 from COMSATS Institute of Information Technology, Pakistan. Currently she is pursuing her PhD from National University of Sciences and Technology, Islamabad, Pakistan.

Muhammad Umair Asghar

Muhammad Umair Asghar did his MS from National University of Sciences and Technology (NUST), Islamabad, Pakistan, in 2019. He is currently working as Research Associate in RF Microwave lab, NUST.

Zeeshan Zahid

Dr Zeeshan Zahid received his M.Phil Electronics from Quaid-i-Azam University, and PhD from Hanyang University, South Korea, in 2006 and 2018, respectively. He is currently serving as Assistant Professor at National University of Sciences and Technology, Islamabad, Pakistan. His doctoral research was focused on high efficiency electrically small antenna design for mobile devices. He is an active researcher and has contributed in a number of research papers, published in reputed journals. His research interests include antenna design for mobile devices, high efficiency and wideband antennas, circularly polarized antennas, and massive MIMO for 5G Smartphone. He is a member of IEEE and IEEE antennas and propagation society (AP-S). He serves as a technical reviewer of various international reputed journals.

Adnan Ahmed Khan

Dr Adnan Ahmed Khan did his BE in Electrical (Telecomm) Engineering from National University of Sciences and Technology, Pakistan. He received his Master's degree in Computer Engineering from University of Engineering and Technology, Taxila. He received his PhD in Computer Engineering from Center of Advanced Studies in Engineering, affiliated with UET Taxila, Pakistan.

Imran Rashid

Dr Imran Rashid did his BE in Electrical (Telecomm) Engineering from National University of Sciences and Technology, Pakistan, in 1999. He received his MSc degree in Telecomm Engineering (Optical Communication) from D.T.U, Denmark in 2004 and his PhD in Mobile Communication from University of Manchester, U.K in 2011.

Abdul Rauf

Dr Abdul Rauf graduated from the National University of Sciences and Technology (NUST), Pakistan in 1998 in Electrical Engineering (Telecommunication). He subsequently received an MSc from the Technical University of Denmark (DTU), Denmark in 2004 in Telecommunication Engineering. He joined NUST in 2011 after completing PhD from University of Sheffield, UK.

Farooq Ahmed Bhatti

Dr Farooq Ahmed Bhatti has got his Master degree in Solid State Physics from Punjab University Lahore, Pakistan in 1979. He did his PhD in Radio Physics (RF Electronics) specializing in Microwave and Millimeter-wave sources from the Department of Communication Engineering Shanghai University PR, China in 1992. He did his Post Doc in Millimeter-wave Devices from Centre for Microwave and Millimeter-wave circuit design and Applications, University of Manchester UK. He joined National University of Sciences and Technology, Islamabad, Pakistan in 1995. Presently he is an Associate Professor at National University of Sciences and Technology, Islamabad, Pakistan.