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A reconfigurable dual-band low noise amplifier (LNA) for 3.4-3.6 GHz IMT-Advanced and 4.2-4.8 GHz UWB systems is presented in this paper. Two different input matching networks with source-inductive-degeneration cascode configuration are used to switch at two different frequency bands. The parallel capacitors between the input MOSFETs' gate and source are used to optimize noise factor of the LNA. The...
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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