Gain Enhancement of Quasi Yagi Antenna Using Lens Technique for 5G Wireless Systems

A high‐gain quasi‐Yagi antenna using nested metaresonator structures

“…However, the use of vias increased the complexity. A gain improvement of around 4 dBi was obtained in Elkarkraoui et al 17 by placing a hemisphere lens in front of the antenna's directors. However, the antenna was uniplanar and not suitable for microwave circuits.…”

“…2,3 General characteristics of the quasi-Yagi antennas can be controlled by modifying the main elements such as the driver, ground, and director of the antenna. [4][5][6][7][8][9][10][11][12][13][14][15][16][17] Apart from forming an array, [18][19][20] quasi-Yagi antenna gain is conventionally enhanced by adding additional director elements. [21][22][23] Other gain enhancement methods typically involve modifying the director element of the quasi-Yagi antenna.…”

“…Among many, quasi‐Yagi antennas, in particular, have grown in popularity due to their desirable features such as high gain, large bandwidth, end‐fire radiation, and compatibility with planar circuitry 2,3 . General characteristics of the quasi‐Yagi antennas can be controlled by modifying the main elements such as the driver, ground, and director of the antenna 4–17 . Apart from forming an array, 18–20 quasi‐Yagi antenna gain is conventionally enhanced by adding additional director elements 21–23 .…”