A Systematic Design Method for Direct Delta-Sigma Receivers

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2018-08
Major/Subject
Mcode
Degree programme
Language
en
Pages
14
2389-2402
Series
IEEE Transactions on Circuits and Systems I: Regular Papers, Volume 65, issue 8
Abstract
Next generation receivers, such as the direct ΔΣ receiver (DDSR), shift the boundary between analog and digital closer to the antenna by merging the functionalities of different sub-blocks. In the DDSR, the analog components are used to their maximum potential as each stage participates in amplification, blocker filtering, anti-aliasing, and quantization noise shaping simultaneously, resulting in a compact design. To overcome the increased design complexity, the implemented DDSRs rely on common practices in receiver and ΔΣ modulator design. In this paper, we will show that the common design practices for neither receivers nor ΔΣ modulators yield optimal performance for the DDSR, and propose a systematic design method for gmC based DDSRs. The method enables improved performance and a straight-forward design flow by combining the gain partitioning, noise considerations, and loop-filter design. The developed method is demonstrated by designing a gmC based DDSR using a 28 nm FDSOI CMOS process. Simulations of the DDSR indicate state-of-the-art performance.
Description
Keywords
analog-digital conversion, delta-sigma modulation, Design methodology, direct delta-sigma receiver., Gain, Logic gates, Modulation, Quantization (signal), Receivers, receivers, RF-to-digital converters, Systematics
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Citation
Englund , M , Ul Haq , F , Stadius , K , Kosunen , M , Ostman , K B , Koli , K & Ryynanen , J 2018 , ' A Systematic Design Method for Direct Delta-Sigma Receivers ' , IEEE Transactions on Circuits and Systems I: Regular Papers , vol. 65 , no. 8 , pp. 2389-2402 . https://doi.org/10.1109/TCSI.2017.2777895