Figure 7

(a) The measurement result (blue dash line) and the simulation result (red solid line) for the far-field directivity diagram of the dual OAM antennas with the parabolic reflector diameter of 100 mm. The measured direction angle, gain and 3 dB angular width of the main lobe are ~6°, 20 dB and ~4.5°, respectively. (b) The simulated 3D pattern for the antenna with reflector diameter of 200 mm.