Abstract
AbstractA compact size square-shaped patch antenna with circular slots working in 5G frequency is proposed in this paper. The following novel design is a circularly polarized antenna working at operating frequency of 28.2 GHz in the 5G frequency range. The substrate material used for the design is Rogers RT/Duroid 5880 having relative permittivity of 2.2(Er) with a thickness of 1.575 mm. The feed mechanism chosen for this design is inset microstrip line. The positioning and length of the inset feed in this design resulted in good return loss of − 21.24 dB at 28.2 GHz. There are three circular slots, one having a radius of 1.8 mm and the other two having a radius of 0.5 mm. The proper separation of these slots resulted in the achievement of high axial ratio bandwidth. Hence, the axial ratio bandwidth of the proposed antenna is wide that is 1200 MHz from 27.8 to 29 GHz. The proposed antenna operates under a wide bandwidth of 26.8–29.5 GHz. The simulated gain of the antenna is 3.5 dB. The VSWR of the antenna is 1.5, thus proving that the power transmission is quite good. This paper covers entire bits of topology that were utilized to design an antenna reconfigured to nurture the attributes of circular polarization in high frequency, with large axial ratio bandwidth, high return loss and perfect impedance matching. Hence, the antenna is suitable for 5G applications.Keywords5GSquare patchWide bandwidthWide axial ratio bandwidthCircular polarizationCircular slotsFeed mechanismOperating frequencyImpedance matchingReturn lossGain
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