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Shengping Yang, et al., “A Tunable Bandpass Sigma-Delt A/D Conversion for Mobile Communication Receiver,” IEEE Vehicular Technology Conference, vol. 2; 1994, pp. 1346-1350. |
Richard Schreier, “An Empirical Study of High-Order Single-Bit Delta-Sigma Modulators,” IEEE Transactions on Circuits and Systems -II: Analog and Digital Signal Processing, vol. 40, No. 8, Aug. 1993, pp. 461-466. |