Abstract
A novel high-gain concentric circular millimeter-wave patch antenna is presented. The antenna finds its application for high-speed 5G mmWave communication utilizing the licensed band of 28 GHz. The antenna has a better directivity and achieves a peak gain of 10 dBi for both E and H planes. The antenna is designed on 0.787 mm Rogers RT/duroid square substrate having a side dimension of 20 mm. The full dimension of the proposed antenna is 20 × 20 × 0.787 mm3. The antenna presented resonates at 28 GHz with a return loss value of −24.69 dB and has an impedance bandwidth of 29%. The presented antenna is a low-cost planar structure, and its peak gain is independent for horizontal and vertical polarization. The concentric circular geometry of the proposed antenna makes the vector E-field of antenna to propagate in such a way that the antenna achieves a better directive gain, impedance matching, and a dual polarization. The parameters such as surface current of the radiating structure, polar gain plot, normalized gain are also discussed. The better performance of the presented antenna in connection with return loss, peak gain, impedance matching, radiation pattern, directivity, and impedance bandwidth makes the proposed antenna a novel candidate to be used for 28 GHz mmWave communication.
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