Design and Implementation of Single-Layer 4 × 4 and 8 × 8 Butler Matrices for Multibeam Antenna Arrays

Table 1

Output phases, phase progressions , and beam directions of the BM.

Input port/beam	Output phase (deg)				(deg)	(deg)
	Port 5	Port 6	Port 7	Port 8
1	45	-180	-45	90	135	41.4
2	0	45	90	135	45	75.5
3	135	90	45	0	-45	104.5
4	90	-45	-180	45	-135	138.6