Design and Analysis of Narrowband 28.0GHz n257 and n261 for Short Range Communication with Higher Data Rates

This communication is reported for narrowband MIMO antenna applications at mmWave access applications for n257 and n261. The proposed radiator is evolved and analyzed on RogersRO400340.0GHz dielectric with permittivity=3.55 and thickness of 0.8mm & can be deployed in 5G infrastructure availability. The single-element antenna radiating electromagnetic energy was initiated with radiating patch consisting of a quarter wavelength stub at 28.0GHz connected to a 500 microstrip feed-line and circular-slotted Defected-Ground-Structure (DGS) resulting in a narrowband. This single-element antenna resonated at 28.0GHz with S
11
=-45.0dB and offered a corresponding impedance of (50.45-j0.33) Ω with a compact size of 80 mm
²
, For achieving higher channel capacity systems, the proposed solo radiator antenna is converted into a 4-port MIMO antenna configuration for radiating electromagnetic waves with a compact volume of 16×20×0.8 mm
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. The proposed MIMO antenna can be utilized for mobile networking.