A single layered broadband circularly polarized MIMO antenna based on metasurface with aperture CPW feed

ABSTRACT

In this paper, a single-layered broadband circularly polarized MIMO antenna is presented for a 5 GHz wireless local area network (WLAN). The Metasurface is designed with an array of patches and these patches are excited by four uniform aperture CPW feed MIMO antennas. The stubs are added across the aperture and central patches at respective apertures are increased to achieve broad bandwidth. Truncated corner square patches are used for the metasurface to achieve circular polarization (CP). The CP MIMO antenna has achieved an impedance bandwidth of 33% (4.35 GHz-6.08 GHz), a 3 dB axial ratio (AR) bandwidth of 11.95% (5.18 GHz-5.8 GHz) and a gain of 8dBi.

KEYWORDS:

• Broadband circular polarization
• CPW fed aperture
• metasurface
• MIMO antenna
• truncated corner square patch

Disclosure statement

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