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.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:59
,
Issue:
4
)
Date of Publication: April 2012