Table 5: Element phasing, beam direction, and interelement phasing for the Butler matrix shown in Figure 4 (manufactured).
E1  ( )E2  ( )E3  ( )E4  ( )Beam
direction		Interelement phasing
(average)
Port 1
( )		 138°−130°
Port 2
( )		 105°−42°
Port 3
( )		 76°50°
Port 4
( )		 42°138°