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

Table 5

Two-dimensional DOA estimation bias for the UCA.

(𝜃,𝜑)	DOA estimation bias
	Open circuit	Su’s method	Proposed method
(10°, 20°)	(0°, 2.2°)	Failure	(0.4°, 0.6°)
(60°, 80°)	(7.2°, 0.8°)	Failure	(0.8°, 0°)