Fig. 8
From: Circularly-polarized 28-GHz antenna for next generations of communication systems

Variation effect of the radius, \({R}_{G}\), of the annular slot in the ground on (a) \(\left|{S}_{11}\right|\) and (b) AR.
From: Circularly-polarized 28-GHz antenna for next generations of communication systems

Variation effect of the radius, \({R}_{G}\), of the annular slot in the ground on (a) \(\left|{S}_{11}\right|\) and (b) AR.