Performance analysis of circularly polarized dual annular ring patch antenna for MIMO satellite application

ABSTRACT

In this paper, a dual annular ring patch antenna with high isolation for Multiple Input Multiple Output (MIMO) Satellite application at 4 GHz is presented. The mutual coupling reduction and circular polarization are achieved by some perturbations in annular ring patch and microstrip stubs between antennas. These perturbations will excite two modes which is orthogonal ie. equal amplitude and phase shift to make it circularly polarized. The antenna design is fabricated on a substrate with permittivity 4.4 and 1.6 mm thickness. The simulated results are studied and analyzed for the proposed antenna. The isolation of better than 30 dB, axial ratio lower than 3 dB and gain of about 3.4 dB are obtained. The performance characteristics are simulated, measured and analyzed with different antenna parameters. The validated antenna shows that the simulated and measured results are in good agreement with each other.

Keywords:

• Annular ring patch antenna
• circular polarization
• MIMO
• mutual coupling

Disclosure statement

No potential conflict of interest was reported by the author(s).

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Notes on contributors

Megha M. Kartha

Megha M. Kartha received her BTech degree from Mahatma Gandhi University in the year 2011 and MTech degree from Amrita Vishwa Vidyapeetham University in the year 2013. Currently she is pursuing her PhD at Amrita Vishwa Vidyapeetham University in the RF domain. Her research interests includes Microstrip Antennas, MIMO etc.

Jayakumar. M

M. Jayakumar currently serving as Professor in Department of Electronics and Communication Engineering at Amrita Vishwa Vidyapeetham University, Coimbatore. His research interests includes Gallium Nitride device-based RF systems, Antenna systems for wireless systems like MIMO, Compact conformal antennas for air-borne vehicle communication, Dielectric properties of specialized materials for RF systems, Filters and Antennas based on Substrate integrated waveguide, Miniaturization of antenna and RF subsystems, Millimeter wave MIMO, etc. He is a co-author in two book chapters published by Nova Publishers Inc. USA and have more than 50 research publications in Journals and conferences.