Linear Polarization to Circular Polarization convertor loaded orthogonally placed two‐port ring ceramic‐based MIMO antenna for WLAN applications

In this article, a dual‐port ring‐shaped ceramic antenna is proposed and examined. The antenna ports are orthogonally placed for achieving the high isolation (more than 20 dB). Ceramic material is fed through circular aperture, which excites the HEM11δ+2 mode inside it. Metasurface module is suspend...

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Bibliographic Details
Published in:	International journal of circuit theory and applications Vol. 51; no. 2; pp. 979 - 989
Main Authors:	Ramalingam, Anandan, Chinnamuthu, Annadurai
Format:	Journal Article
Language:	English
Published:	Bognor Regis Wiley Subscription Services, Inc 01-02-2023
Subjects:	Antennas Ceramics Circular polarization dielectric resonator antenna Linear polarization Local area networks Metasurfaces MIMO antenna
Online Access:	Get full text
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Summary:	In this article, a dual‐port ring‐shaped ceramic antenna is proposed and examined. The antenna ports are orthogonally placed for achieving the high isolation (more than 20 dB). Ceramic material is fed through circular aperture, which excites the HEM11δ+2 mode inside it. Metasurface module is suspended over the proposed antenna for converting the LP‐to‐CP waves. Fabricated antenna confirms its operation from 5.43 to 5.82 GHz with a fractional bandwidth of 6.93%. After applying the metasurface, 3‐dB axial ratio is achieved from 5.45 to 5.65 GHz. Stable radiation properties and good value of diversity parameter makes it suitable for WLAN (5.5 GHz) application. This article presents a ceramic based MIMO antenna loaded with metasurafce. Loading of metasurface provides enhanced isolation and also converts linear waves in to circular waves.
ISSN:	0098-9886 1097-007X
DOI:	10.1002/cta.3449