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A new architecture for IF to RF conversion is presented. The architecture is based on a tunable continuous-time bandpass ΣΔ modulator with fractional delay in combination with a Manchester coder and decoder. The suitability of the proposed architecture is discussed in the context of a software-defined radio. Mixed-signal behavioural simulations confirm the validity of the concept.
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Sobot et al. (2005) studied this question.
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