Research Article
A New Fractal-Based Design of Stacked Integrated Transformers
Table 1
The performance comparison of different transformer realizations.
| Ref. | Configuration | Lp [nH] | Qp | SRF [GHz] |
| [11] | Differential square spiral transformer | 0.8 | 5.2 peak @ 5 GHz | 10 | [12] | Interleaved 3 turn square spiral transformer | 5.32 | 5.77 peak @ 2.95 GHz | 6.2 | [13] | Interleaved square spiral transformer | 8.5 | NA | 4.9 | [14] | Differential square spiral transformer | 5.5 | 10 peak @ 1.7 GHz | NA | This work | Stacked transformer, Hilbert , | 0.6 | 5.95 peak @ 8.4 GHz | 18.8 |
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