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Eco-friendly energy sources (i.e. green power) attract great attention as lowering computer carbon footprint has become a necessity. Existing proposals on managing green energy powered systems show sub-optimal results since they either use rigid load power capping or heavily rely on backup power. We propose Chameleon, a novel adaptive green throughput server. Chameleon comprises of multiple flexible...
Large-scale computing systems such as data centers are facing increasing pressure to cap their carbon footprint. Integrating emerging clean energy solutions into computer system design therefore gains great significance in the green computing era. While some pioneering work on tracking variable power budget show promising energy efficiency, they are not suitable for data centers due to lack of performance...
This paper presents a dual-band CMOS LC voltage controlled oscillator (VCO) with a switched current source for 3.4-3.6 GHz IMT-Advanced and 4.2-4.8 GHz UWB applications. To accomplish dual-band operation, reconfigurable LC tank is adopted, and a switched current source has been used to guarantee robust start-up condition. Bias filters are used in VCO to suppress reference current noise and dynamic...
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