Table 4: Element phasing, beam direction, and interelement phasing for the Butler matrix shown in Figure 3 (conceptual).
  ( )   ( )   ( )  ( )Beam
direction		Interelement
phasing
Port 1
( )		 138.6°−135°
Port 2
( )		 104.5°−45°
Port 3
( )		 75.5°45°
Port 4
( )		 41.4°135°