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This paper presents a low-voltage, differential RC-ring oscillator for wireless communication systems, designed in a standard triple-well 90nm CMOS technology. This is a two-stage R-NMOS (resistor-NMOS logic) ring VCO. The oscillation frequency can be controlled from the DC voltage sources: the back-gate biasing voltage V<sub>Bulk</sub> and/or the power(More)
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