Continuous-Time Digital Front-Ends for Multistandard by Pieter A. J. Nuyts,Patrick Reynaert,Wim Dehaene

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By Pieter A. J. Nuyts,Patrick Reynaert,Wim Dehaene

This booklet describes the layout of absolutely electronic multistandard transmitter front-ends that can at once force a number of switching strength amplifiers, hence taking out all different analog components. After reviewing various architectures, the authors concentrate on polar architectures utilizing pulse width modulation (PWM), that are solely in accordance with unclocked hold up strains and different continuous-time electronic hardware. As a consequence, readers are enabled to shift accuracy issues from the voltage area to the time area, to coincide with submicron CMOS expertise scaling. The authors current assorted architectural techniques and evaluate them, in response to their impact at the sign and spectrum caliber. subsequent, a high-level theoretical research of 2 varied PWM-based architectures – baseband PWM and RF PWM – is made. at the circuit point, conventional electronic parts and layout strategies are revisited from the viewpoint of continuous-time electronic circuits. Important layout standards are pointed out and assorted suggestions are provided, besides their merits and downsides. ultimately, chips designed in nanometer CMOS applied sciences are defined, besides dimension effects for validation.

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