Two-Dimensional Time-Domain Antenna Arrays for Optimum Steerable Energy Pattern with Low Side Lobes

Figure 7

Spectrum in frequency of (a) CUSA at 𝜃=0^∘, (b) RA at 𝜃=0^∘, (c) CUSA at 𝜃=45^∘, and (d) RA at 𝜃=45^∘.

(a)

(b)

(c)

(d)