Figure 2
From: Ultra-wideband circularly polarized cavity-backed crossed-dipole antenna

Evolution of the proposed CP antenna. (a) Ant.1. (b) Ant.2. (c) Ant.3. (d) Ant.4.
From: Ultra-wideband circularly polarized cavity-backed crossed-dipole antenna

Evolution of the proposed CP antenna. (a) Ant.1. (b) Ant.2. (c) Ant.3. (d) Ant.4.