Abstract
This paper proposes a new technique for blocker rejection in sigma-delta analog to digital converters (SDADC). The new technique enables the SDADC to withstand blockers at certain frequency, such as adjacent channels, without saturation. The technique relies on adding a notch filter within the SDADC that affects the signal transfer function (STF) without affecting the noise transfer function (NTF). The system level, design approach, and simulation results of the proposed blocker tolerant SDADC are presented in this paper. Simulation results show that the proposed technique enables the SDADC to withstand a large blocker level without degrading the peak signal to noise ratio (SNR) and improving the SNR by at least 10 dB when compared to the case with no blocker rejection.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
