Design and Experimental Analysis of Miniaturized Octa-Port UWB/SWB-MIMO Antenna With Triple-Band Rejection Characteristics

Abstract

This paper introduces the design and experimental analysis of an eight-port Ultra Wide Band (UWB)/Super Wide Band MIMO antenna with the with triple-band rejection characteristics. The proposed UWB design includes a square-shaped radiator and a shared partial ground with novel hexagonal-ring type fencing decoupling structure to achieve UWB and a high degree of isolation between radiating elements. The partial ground with hexagonal-ring type fencing is employed to achieve a broad impedance matching of 7.4 GHz (3.1–12 GHz), while the notch bands are realized at 5 GHz (4.6 to 5.9 GHz), 8 GHz (7.70–8.43 GHz), and 10.5 GHz (10.3–10.98 GHz) by using Substrate Integrated Waveguide(SIW) based metallic via integration of hexagonal and semi-hexagonal parasitic slot stub with radiator. The band notch band characteristics obtained autonomously without modifying antenna performance. The fabricated antenna is having a very compact size of $54\times 54$ mm${}^3$. The important antenna characteristics of proposed antenna, such as bandwidth (7.4 GHz), isolation (>20 dB), gain(0-7.5), efficiency(80%), radiation pattern, Envelop Correlation Coefficient(ECC)(0.015), Total Active Reflection Coefficient (TARC) and Channel Capacity Loss (CCL) are examined.

Keywords:

• MIMO antenna
• UWB MIMO antenna
• Eight-port antenna
• NI USRP
• SWB antenna
• Triple band notch

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Prabhu Palanisamy

P Prabhu received his BE degree in electronics and communication engineering from Sudharsan Engineering College, Tamil Nadu, India (affiliated to Anna University, Chennai) in 2010 and ME degree in communication systems from Bannari Amman Institute of Technology, Tamil Nadu, India, in 2013. Presently, he is working as an assistant professor in SRMIST and pursuing PhD degree in the Department of Electronics and Communication Engineering at SRMIST, Chennai, India. His research interests include monopole antenna design, UWB antenna, MIMO antenna design.

Malarvizhi Subramani

S Malarvizhi received his BE degree in electronics and communication engineering from Arulmigu Meenakshi Amman College of Engineering, Tamil Nadu, India (affiliated to Madras University, Chennai) in 1989, ME degree in applied electronics from GCT Coimbatore, Tamil Nadu, India, in 1990 and received PhD degree in the College of Engineering, Guindy, Chennai, in 2006. Presently, he is working as a professor in the Department of Electronics and Communication Engineering at SRMIST, Chennai, India. His research interests include RF antenna design, wireless communication, VLSI signal processing. Email: [email protected]