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A current-driven low-pass filter embedded in a sigma-delta analog-to-digital converter is presented. The implementation of a class-B feedback digital-to-analog converter, together with in-band noise reduction and passive filtering, gives the possibility to handle challenging wireless communication scenarios with low power consumption. The architecture is a suitable candidate to implement the entire baseband analog section of a Global System for Mobile Communications-Universal Mobile Telecommunications System (GSM-UMTS) reconfigurable receiver.
Circuits and Systems II: Express Briefs, IEEE Transactions on (Volume:59 , Issue: 4 )
Date of Publication: April 2012