A Hybrid Digital/Analog Polyphase Filtering Approach for High-Speed RF-DACs

arXiv:2611.09461v1 Announce Type: new Abstract: This paper proposes a hybrid polyphase interpolation for RF-DACs that removes the need for full-rate digital commutation by using passive combining on the RF-DAC itself. A P-branch polyphase FIR filter is factored into M streams, each formed by a (P/M)-way digital commutator at fRF/M and driving a dedicated RF-DAC slice, giving either partial digital (1Source：https://arxiv.org/abs/2611.09461

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