Smith Chart Based Method for Rapid Design of Wideband and Multiband Quasi-Yagi Antennas

In this study, a design concept and a Smith-chart based graphical analysis approach are proposed to rapidly and effectively design the multiband and wideband quasi-Yagi antennas. In addition, a prototype of wideband antenna array for millimeter-wave 5G applications has been developed based on the proposed approach. The measurement shows that the proposed antenna array operates in 24 – 40 GHz (50 %) with a stable gain at approximately 10 dBi.