Research Article
Characteristic Mode-Based Neutralization Line Design for MIMO Antenna
Table 2
Performance comparisons with the previously published literature.
| Ref. | Decoupling method | Max decoupling improvement | Number of ports | Bandwidth | Bands | Edge-to-edge distance | Complexity |
| [3] | Decoupling network | 15 dB | 2 | Narrow | Single | 0.055λ0 | Yes | [5] | Decoupling network | 10 dB | 2 | Wide | Single | 0.084λ0 | Yes | [8] | Metamaterial | 32 dB for X-band 27 dB for ku-band 26 dB for K-band | 4 | Wide | Six | 0.26λ0 | Yes | [9] | Fractal metamaterial EBG | 17 dB for S12 37 dB for S13 17 dB for S14 | 4 | Wide | Three | 0.5λ0 | Yes | [12] | EBG | 10 dB | 2 | Narrow | Single | 0.5λ0 | Yes | [13] | Uniplanar compact EBG | 14 dB | 2 | Narrow | Single | 0.5 λ0 | Yes | [14] | Fractal UC-EBG | 16 dB | 2 | Narrow | Single | 0.22λ0 | Yes | [17] | DGS | 40 dB | 2 | Narrow | Single | 0.031λ0 | No | [18] | DGS | 17.4 dB | 2 | Narrow | Single | 0.23λ0 | No | [19] | SRR | 10 dB | 2 | Narrow | Single | 0.25λ0 | Yes | [21] | NL | 23.7 dB | 2 | Wide | Single | 0.079λ0 | No | [22] | NL | 16 dB | 2 | Narrow | Single | 0.114λ0 | No | This work | TCM + NL | 18 dB | 2 | Narrow | Two | 0.033λ0 | No |
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