Jorge V. de la Cruz

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Acknowledgments ix Abstract x 1. Introduction 1 2. Wild potatoes 2 Habitats 2 Shapes and colours 3 3. Potato taxonomy 6 A dynamic taxonomy 6 Ingroup and outgroup relationships 12 Cultivated species 14 Complicating factors for a stable potato taxonomy 14 Breeding barriers 16 4. Data and software 17 Collecting expeditions 17 Data sources 17 Data quality 18(More)
This paper presents a more comprehensive approach for the design of single-bit single-loop sigma-delta modulators, either in continuous or discrete-time domain. The approach is based on SNR and MSA data graphics generated for second-, third- and fourth-order modulators. The simulated data is obtained within a Matlab/Simulink® environment and is valid(More)
This paper reports the system-level design of a reconfigurable continuous-time sigma-delta modulator that is capable to perform the analog-to-digital conversion for GSM, LTE5 and WLAN wireless standards. The modulator architecture consists of a third-order loop filter using feed-forward summation topology and a 4-bit internal quantizer. The modulator(More)
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