| Ref. | Number of inputs | Simultaneous outputs | Standard filter functions | VM/CM | Active blocks used | Passive components | Orthogonal tunability of and |
| [10] | Two | Two | LP, HP, BP | VM | Two | Two C | No | [11] | One | Three | LP, HP, BP | CM | Two | Two C | No | [12] | One | Three | LP, HP, BP | CM | One | Two C; One R | Yes | [13] | One | Five | LP, HP, BP, NF, AP | VM | Two | Two C; Two R | Yes | [14] | One | Three | LP, HP, BP | CM | One | Two C | No | [15] | Three | One | LP, HP, BP, NF, AP | CM | Two | Two C | Yes | [16] | Three | One | LP, HP, BP, NF, AP | CM | One | Two C | No | [17] | Three | One | LP, HP, BP, NF, AP | VM | one | Two C | Yes | [18] | One | Three | LP, HP, BP | VM and CM | One | Three C; two R | Yes | Proposed work | One | Three | LP, HP, BP | VM and CM | One | Three C; one R | Yes |
|
|