This article presented a millimeter wave antenna which operated at 38 GHz
for 5G mobile base station. The MIMO (Multiple Input Multiple Output)
antenna consisted of 1x10 linear array configurations. The proposed
antenna’s size was 88 x 98 mmଶ and printed on 1.575 mm-thick Rogers
Duroid 5880 subsrate with dielectric constant of ε୰=2.2 and loss tangent
(tanδ) of 0.0009. The antenna array covered along the azimuth plane to
provide the coverage to the users in omnidirection. The simulated results
showed that the single element antenna had the reflection coefficient (S11) of
-59 dB, less than -10 dB in the frequency range of 35.5-39.6 GHz. More than
4.1 GHz of impedance bandwidth was obtained. The gain of the antenna
linear array was 17.8 dBi while the suppression of the side lobes was -2.7 dB.
It showed a high array gain throughout the impedance bandwidth with
overall of VSWR were below 1.0646. It designed using CST
microwave studio. 

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