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Please use this identifier to cite or link to this item: http://dyuthi.cusat.ac.in/purl/4512

Title: Wideband Low-Distortion Sigma-Delta ADC for WLAN
Authors: Mythili, P
Babita, Jose R
Jimson, Mathew
Pradhan, D K
Keywords: dual-band
feedforward path
multistandard receiver
sigma-delta modulator
Issue Date: 10-Dec-2007
Publisher: IEEE
Abstract: This work presents a wideband low-distortion sigmadelta analog-to-digital converter (ADC) for Wireless Local Area Network (WLAN) standard. The proposed converter makes use of low-distortion swing suppression SDM architecture which is highly suitable for low oversampling ratios to attain high linearity over a wide bandwidth. The modulator employs a 2-2 cascaded sigma-delta modulator with feedforward path with a single-bit quantizer in the first stage and 4-bit in the second stage. The modulator is designed in TSMC 0.18um CMOS technology and operates at 1.8V supply voltage. Simulation results show that, a peak SNDR of 57dB and a spurious free dynamic range (SFDR) of 66dB is obtained for a 10MHz signal bandwidth, and an oversampling ratio of 8.
Description: Information, Communications & Signal Processing, 2007 6th International Conference on
URI: http://dyuthi.cusat.ac.in/purl/4512
Appears in Collections:P Mythili

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