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Design and implementation of a CMOS multiphase 10b digitally controlled oscillator (DCO) in ring topology that employs fraction-based series to optimize the transistors size, are presented. One of the advantages of using fraction-based series is that it can reduce the power consumption compared to the binary series without any cost of tuning range and phase noise. The proposed DCO, which was implemented...
This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no...
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