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Research Article

Integrated VCOs for Medical Implant Transceivers

Table 1

Comparison table for the three oscillator architectures.

VCO typeCurrent consumptionDie areaPhase noise @ 160 kHz offsetLinearityFrequency stabilitySupply noise sensitivity

Ring0.74 mA0.2 mm × 0.2 mm−77 dBc/HzGoodPoorSensitive
LC-tank divided2.20 mA0.4 mm × 0.7 mm−97 dBc/HzModerateGoodImmune
LC-tank with PF1.25 mA0.6 mm × 0.8 mm−98  dBc/HzModerateGoodImmune

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