Mutual Coupling Compensation for Direction-of-Arrival Estimations Using the Receiving-Mutual-Impedance Method

Table 2

DOA estimation using MPM and a ULA with 8 antenna elements with the element separation of Δ=0.15𝜆. DOA estimation is based on the decoupled voltages using the RMI determined based on methods 2 and 3.

	Direction	Mean	Bias	Standard dev.	RMSE
Method 2	20°	26.8300°	6.8300°	1.9839°	7.1121°
	35°	79.8916°	44.8916°	8.9505°	45.7743°
	100°	99.3991°	0.6008°	3.4001°	3.4511°
Method 3	20°	20.1861°	0.1861°	0.4111°	0.4511°
	35°	35.1614°	0.1614°	0.4504°	0.4783°
	100°	100.0078°	0.0078°	0.0078°	0.0110°