HIGH EFFICIENT 3.6GHz 4 – ELEMENT CPW FED MIMO ANTENNA USING U – SHAPED OPEN SPIRAL SLOTS FOR 5G MOBILE COMMUNICATIONS
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Abstract
This paper presents the investigation on different substrates that can be used in
designing of microstrip monopole antenna such as FR – 4, Arlon 250 ™, Rogers RT / Duroid
5880 ™, Teflon and Rogers RO4350 to operate at 3.6GHz frequency. Main aim of this paper
is to propose 4 x 4 Multiple-Input Multiple-Output (MIMO) antenna with coplanar
waveguide (CPW) fed technique operating at 3.3 – 3.8GHz for advanced 5G mobile
applications. With the help of orthogonal mode arrangement, isolation between MIMO
antennas is better than 12dB and achieved radiation efficiency of 97 – 98%. Proposed
antenna achieves 550MHz impedance bandwidth at S11< -10dB over operating bandwidth
from 3.33 GHz to 3.88 GHz and its peak gain value is 4.90dB. The design is suitable for fifth
generation mobile communications exhibited by MIMO antenna performance parameters
Envelope correlation coefficient (ECC) < 0.01, diversity gain (DG) ~ 10dB, total active
reflection coefficient (TARC) <0.3, Channel capacity loss (CCL) < 0.1bits/Hz and mean
effective gain (MEG) is greater than 2.5dB. According to simulation results and MIMO
parameters, this proposed antenna met the future 5G applications.
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