A Millimeter-Wave Wideband Circularly Polarized Planar Spiral Antenna Array with Unequal Amplitude Feeding Network

Figure 5

Simulated radiation patterns of the proposed array with and without a power divider: (a) radiation patterns at 25 GHz, (b) radiation patterns at 28 GHz, and (c) radiation patterns at 31 GHz.

(a)

(b)

(c)