L‐shaped dielectric resonator based circularly polarized multi‐input‐multi‐output (MIMO) antenna for wireless local area network (WLAN) applications. Issue 9 (19th June 2018)

• Record Type: Journal Article
• Authors: Sahu, Nikesh Kumar; Das, Gourab; Gangwar, Ravi Kumar
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 28:Issue 9(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-19
• Subjects: circular polarization (CP) -- defected ground structure (DGS) -- dielectric resonator antenna (DRA) -- multi‐input‐multi‐output (MIMO) -- wireless local area network (WLAN); Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.21426
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: A dielectric resonator (DR) based circularly polarized multi‐input‐multi‐output (MIMO) antenna is studied in this article for wireless local area network (WLAN) applications. In this work, two self‐complementary L‐shaped dielectric resonators are used as two radiators and each radiator is excited by a 50 Ω coaxial probe feed network. The position of the feed network is selected in such a way that it directly generates a pair of orthogonal modes inside the DR. Along with this, diversity in the radiated beam direction is observed to provide low field correlation and a defected ground structure (DGS) is implemented to provide low inter‐port correlation. Experimental test results show that the proposed MIMO structure possesses a 10‐dB impedance bandwidth of 15.6% (5.2‐6.08 GHz) and a 3‐dB axial ratio (AR) bandwidth of 7.05% (5.2‐5.58 GHz). Besides, MIMO suitability of the proposed structure is evaluated by means of envelope correlation coefficient (ECC), diversity gain (DG), and channel capacity loss (CCL).