Research Article
Comparative Analyses of Phase Noise in 28 nm CMOS LC Oscillator Circuit Topologies: Hartley, Colpitts, and Common-Source Cross-Coupled Differential Pair
Table 3
Summary of the PN results obtained by SpectreRF and ISF.
| PN (dBc/Hz) @ 1 MHz frequency offset | Topology | SpectreRF | ISF | 1 μA | 10 μA | 100 μA | 1 mA | 10 mA |
| Colpitts | −96.25 | −96.20 | −98.33 | −98.49 | −98.50 | −98.45 | Hartley | −92.75 | −92.79 | −95.18 | −94.36 | −94.85 | −95.29 | Cross coupled | −102.66 | −102.69 | −102.84 | −102.83 | −102.84 | −102.94 |
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