Mythili, P; Jawar, Singh; Babita, Jose R; Jimson, Mathew(IEEE, December 17, 2007)
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Abstract:
This work presents a triple-mode sigma-delta modulator
for three wireless standards namely GSM/WCDMA and
Bluetooth. A reconfigurable ADC has been used to meet
the wide bandwidth and high dynamic range requirements
of the multi-standard receivers with less power
consumption. A highly linear sigma-delta ADC which has
reduced sensitivity to circuit imperfections has been
chosen in our design. This is particularly suitable for wide
band applications where the oversampling ratio is low.
Simulation results indicate that the modulator achieves a
peak SNDR of 84/68/68 dB over a bandwidth of
0.2/3.84/1.5 MHz with an oversampling ratio 128/8/8 in
GSM/WCDMA/Bluetooth modes respectively
Description:
10th International Conference on Information Technology