a Matlab package for phased array beam shape inspection

54 A FIGURES TO CHAPTERS 2–7
ARRAY 50×20 1.50×1.50 δx=0.0° θ=0.00° W=0.68°
ELEMENT JITTER ∆t=300 ps ∆ψ=24.2° ∆a/a=20.0%
∆AF=−12.1%±0.6 ∆θ=−0.000°±0.006 ∆W=−0.000°±0.003
% / bin
15
10
5
(a) Beam amplitude jitter
0
−16 −14 −12 −10 −8
∆ AF max
[%]
% / bin
60
40
20
(b) Beam direction jitter
0
−0.05 0 0.05
∆θ [°]
% / bin
(c) Beam width jitter
80
60
40
20
0
−0.05 0 0.05
∆W [°]
Figure 22: Jitter simulation 2. Simulated array factor jitter in a 50 × 20 element array
in x-direction, when element timing jitter is ∆t = 300 ps, the corresponding
element phase jitter 45 ◦ , and the element amplitude jitter is 20% around
1. The undistorted beam has been directed in vertical direction, and has
half-power width of 0.68 ◦ in the x-direction.