Abstract
A high gain Radial Line Slot Antenna (RLSA) with left hand circular polarization (LHCP) and low side lobe level (SLL) at millimeter-wave band is presented. The orientation of the slots reduced the SLL below −30 dB at 29.2 GHz. The gain of the antenna is 20 dB and the radiation efficiency is 84%. The antenna has symmetrical radiation pattern for both planes. The antenna is suitable for 5G wireless communication at base station.
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