Abstract
A closely coupled (minimum distance of 0.14 λ0) Multiple Input Multiple Output (MIMO) antenna with high isolation is proposed. The MIMO antenna comprises of two circular-shaped radiating elements, which are fed by two opposite directed microstrip lines. The ground plane consists of modified Z-shaped metallic plane. Two different techniques are explored for improvement of isolation of MIMO antenna. First, a double ring structured frequency selective surface (FSS) is positioned above the antenna. The combination of FSS & antenna structure works with high isolation (S21or S12) (peak isolation of 49 dB) across the entire operating range (3.8 GHz–5.3 GHz). Secondly,arectangular metallic plate of thickness 0.3 mm is placed vertically between the MIMO antenna, which covers 4 GHz–5.3 GHz bands with high isolation (peak isolation of 49.4 dB). The proposed design consists of the MIMO antenna with both FSS and metallic plate. The proposed structure provides an appreciably high isolation (peak isolation of 59.5 dB) and peak gain of 4 dBi with Envelope Correlation Co-efficient (ECC) lower than 0.004. The proposed antenna having dimension of 40 mm × 40 mm is tremendously suitable for high isolation wireless applications.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: AEU - International Journal of Electronics and Communications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
