Decoupling Technique Using Ferrite-Film Loading for 5G MIMO Applications

Table 2

Comparison of the proposed antenna with existing works.

Ref.	Element size (L ×  × H mm^3)	Method	Bandwidth	Isolation (dB)	Element distance (mm)	Efficiency
[8]	16 × 5 × 1	Decoupling-loop	8.9% (3.33–3.65 GHz)	13	1	65–80%
[11]	11 × 43.5 × 1	Tapered-slot-etched method	40.8% (1.7–2.7 GHz)	40	8.5	—
[12]	28 × 1 × 29	Parasitic structure	5% (2.33–2.45 GHz)	25	28	72–83%
[16]	6.7 × 15.5 × 3.08	Self-neutralized technique	4.1% (4.8–5.0 GHz)	23	3.2	78–80%
[17]	27.3 × 27.3 × 3.175	Weak field	5.7% (3.4–3.6 GHz)	12.0	6.5	—
[21]	35 × 45 × 1.6	Metamaterial	8.8% (9.12–9.96 GHz)	10	20	—
[37]	20 × 32 × 1.6	Extra branch	14.3% (3.3–3.8 GHz)	14	2	68–80%
[39]	9.6 × 3 × 0.8	Lumped components	3.9% (3.42–3.59 GHz)	13.5	1	32–51%
This work	11.3 × 4 × 1	Ferrite loading	9.1% (3.35–3.67 GHz)	10.43	1.4	43–45.5%