Design of Crossed Dipole Yagi–Uda MIMO Antenna for Radar Applications

Table 4

Comparison of the proposed MIMO antenna with reported antenna.

Ref.	No of antennas	Size	Return loss (dB)	Isolation (dB)	Frequency (GHz)	Bandwidth (MHz)	Gain (dB)	Efficiency (%)	ECC
[16]	4	82.75 × 54.82 mm^2	<−32	—	5.8	200	5.3	78.4	<0.0001
[17]	4	120 × 60 mm^2	—	>12	1.3–2.6	45 & 65	—	—	<0.2
[18]	4	42.83 × 34.48 mm^2	−28.75	>45	5.8	150	2	—	<0.0001
[19]	4	60 × 60 mm^2	−19	>19	3.4–3.8	400	4.5	—	<0.12
[20]	4	130 × 90 mm^2	−18	10	0.6, 1, 6	700	6.9	70	≤0.50
[21]	4	40 × 25 mm^2	—	5.5	2.2–2.45	180	6.55	75 & 85	0.175
[22]	4	12 × 12 mm^2	−22	—	36	—	10.6	80	—
[23]	4	39 × 39 mm^2	−22	>22	3.25–3.75; 5.08–5.90	2.3–13.75	1.4–4.6	—	<0.02
This work	4	120 mm × 70 mm^2	−45	>55	1.8–2.5	700	12.1	87.5	0.0001