A Systematic Design Method for Direct Delta-Sigma Receivers

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openAccess

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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