Why the study?
The connection between a VCO-ADC and a first-order Sigma-Delta modulator was explained using Pulse Frequency Modulation, but an explanation extending to a generic Sigma-Delta modulator was needed.
Design
Other
Authors
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Sampling invariance links Sigma-Delta to PFM; extends prior VCO-ADC theory and leaves open broader modulator applications.
Key points are not available for this paper at this time.
Medina et al. (2024) studied this question.
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