Research Article
Integrated VCOs for Medical Implant Transceivers
Table 1
Comparison table for the three oscillator architectures.
| VCO type | Current consumption | Die area | Phase noise @ 160 kHz offset | Linearity | Frequency stability | Supply noise sensitivity |
| Ring | 0.74 mA | 0.2 mm 0.2 mm | −77 dBc/Hz | Good | Poor | Sensitive | LC-tank divided | 2.20 mA | 0.4 mm 0.7 mm | −97 dBc/Hz | Moderate | Good | Immune | LC-tank with PF | 1.25 mA | 0.6 mm 0.8 mm | −98
dBc/Hz | Moderate | Good | Immune |
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