512 



BELL SYSTEM TECHNICAL JOURNAL 



-2.0 -1.8 -1.6 -1.4 -1.2 



1.0 -0.8 -0.6 -0.4 -0.2 



n' _ n _ 



0.2 0.4 0.6 



-1.0 -0.8 -0.6 -0.4 -0.2 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 



H' H-i 

 N ~ N ^ 





0.2 0.4 0.6 O.S 1.0 1.2 1.4 1.6 1.8 2.0 Z.Z 2.A 2.6 



n 

 N 



Fig. 26 — Sinusoidal aperture with half wavelength overlap. 



