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This work presents a fully integrated polar modulated CMOS class-E amplifier in a 0.18 ??m CMOS process. The amplifier using the device-stacking topology is implemented with a self-biased control circuit, which allows the stacked device operating as a resistance, for linearizing the AM-AM and AM-PM distortion. The simulation result shows that the AM-PM distortion is reduced from 18 degrees to 3 degrees...
This paper describes a prototype micropower instrumentation amplifier intended for chronic sensing of neural field potentials (NFPs). NFPs represent the ensemble activity of thousands of neurons and code-useful information for both normal activity and disease states. NFPs are small - of the order of tens of muV- and reside at low bandwidths that make them susceptible to excess noise. Therefore, to...
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