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A Third-Order Sigma-Delta Modulator for Dual-Mode Receivers

Tags:
gsm,
delta,
sigma,
wcdma

Overview This paper presents a multibit sigma-delta modulator for GSM/WCDMA receivers. It uses a sigma-delta modulator with feedforward signal path to reduce the operational amplifiers nonlinearity effects. The improved performance of multibit topologies is exploited to reduce the oversampling ratio and to overcome stability limitations. A third-order 4bit feedforward sigma-delta modulator topology is chosen to meet both GSM and WCDMA specifications without needing additional hardware.

Further White Paper Details
Publisher	KTH - Royal Institute of Technology	File Format	PDF
Date Published	January 2004	Downloads	1
Format	White Papers
Topics	N/A

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