A RHCP Microstrip Antenna with Ultrawide Beamwidth for UHF Band Application

Figure 6

Antenna performance at f = 401.6 MHz: (a) return loss, (b) RHCP radiation pattern at 𝜑 = 0°, 𝜑 = 90°, and (c) axial ratio pattern at 𝜑 = 0° and 𝜑 = 90°.

(a)

(b)

(c)