Accurate DOA Estimations Using Microstrip Adaptive Arrays in the Presence of Mutual Coupling Effect

Table 3

DOA estimation bias for the circularly polarized array.

𝜑	DOA estimation bias
	Open circuit	Su’s method	Proposed method
−50°	4.6°	1.8°	0°
−20°	3°	1.5°	0.2°
0°	1.5°	0.6°	0.3°