Array Beamforming

Array

Number of Elements N 8 Element Spacing d/λ 0.50

Steering

Steer Angle θ₀ (deg) 0

Tapering (Window)

Computed

3 dB Beamwidth—

First Null BW—

Peak SLL—

Array Gain—

Grating Lobes—

Array Factor
AF(θ) = Σ w_n e^{jn·2πd/λ·(sinθ-sinθ₀)}

Half-power beamwidth (uniform):
θ_3dB ≈ 0.886λ/(Nd cosθ₀)

Grating lobes appear when:
d/λ ≥ 1/(1+|sinθ₀|)