The Design of RF Bandpass Sigma-Delta Modulators with Bulk Acoustic Wave Resonators

Abstract : This paper proposes a method to introduce BAW resonators in the loop of a continuous-time sigma-delta modulator. The method is based on the equivalence between the noise-transfer-function of a conventional bandpass discrete-time sigma-delta and the noise-transfer-function of a continuous-time BAW-based sigma-delta modulator with FIRDACs. The method is general and can be applied to BAW resonators with and without cancellation of the anti-resonance frequency. The noise-transfer-function and the signal-transfer-function of the BAW-based sigma-delta modulator are analyzed and compared with their discrete-time counterpart.
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Conference papers
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Farakh Javid, Hassan Aboushady, Nicolas Beilleau, Dominique Morche. The Design of RF Bandpass Sigma-Delta Modulators with Bulk Acoustic Wave Resonators. ISCAS IEEE International Symposium on Circuits and Systems, May 2009, Taipei, Taiwan. IEEE, ISCAS IEEE International Symposium on Circuits and Systems, pp.3138-3141, 〈10.1109/ISCAS.2009.5118468〉. 〈hal-01295132〉

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