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°