Self-Dithered Digital Delta-Sigma Modulators for Fractional-N PLL

Zule XU; Jun Gyu LEE; Shoichi MASUI

doi:10.1587/transele.E94.C.1065

Self-Dithered Digital Delta-Sigma Modulators for Fractional-N PLL

Zule XU, Jun Gyu LEE, Shoichi MASUI

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Digital delta-sigma modulators (DDSMs) applied in fractional-N frequency synthesizers suffer from spurious tones which undermine the synthesizer's spectral purity. We propose a solution featuring no hardware overhead while achieving equivalent spur elimination effect as using LFSR-dithering. This method can be implemented on MASH and single-loop DDSMs of 3rd- and 2nd-order.

Publication: IEICE TRANSACTIONS on Electronics Vol.E94-C No.6 pp.1065-1068

Publication Date: 2011/06/01

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Online ISSN: 1745-1353

DOI: 10.1587/transele.E94.C.1065

Type of Manuscript: BRIEF PAPER

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Zule XU, Jun Gyu LEE, Shoichi MASUI, "Self-Dithered Digital Delta-Sigma Modulators for Fractional-N PLL" in IEICE TRANSACTIONS on Electronics, vol. E94-C, no. 6, pp. 1065-1068, June 2011, doi: 10.1587/transele.E94.C.1065.
Abstract: Digital delta-sigma modulators (DDSMs) applied in fractional-N frequency synthesizers suffer from spurious tones which undermine the synthesizer's spectral purity. We propose a solution featuring no hardware overhead while achieving equivalent spur elimination effect as using LFSR-dithering. This method can be implemented on MASH and single-loop DDSMs of 3rd- and 2nd-order.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E94.C.1065/_p

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@ARTICLE{e94-c_6_1065,
author={Zule XU, Jun Gyu LEE, Shoichi MASUI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Self-Dithered Digital Delta-Sigma Modulators for Fractional-N PLL},
year={2011},
volume={E94-C},
number={6},
pages={1065-1068},
abstract={Digital delta-sigma modulators (DDSMs) applied in fractional-N frequency synthesizers suffer from spurious tones which undermine the synthesizer's spectral purity. We propose a solution featuring no hardware overhead while achieving equivalent spur elimination effect as using LFSR-dithering. This method can be implemented on MASH and single-loop DDSMs of 3rd- and 2nd-order.},
keywords={},
doi={10.1587/transele.E94.C.1065},
ISSN={1745-1353},
month={June},}

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TY - JOUR
TI - Self-Dithered Digital Delta-Sigma Modulators for Fractional-N PLL
T2 - IEICE TRANSACTIONS on Electronics
SP - 1065
EP - 1068
AU - Zule XU
AU - Jun Gyu LEE
AU - Shoichi MASUI
PY - 2011
DO - 10.1587/transele.E94.C.1065
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E94-C
IS - 6
JA - IEICE TRANSACTIONS on Electronics
Y1 - June 2011
AB - Digital delta-sigma modulators (DDSMs) applied in fractional-N frequency synthesizers suffer from spurious tones which undermine the synthesizer's spectral purity. We propose a solution featuring no hardware overhead while achieving equivalent spur elimination effect as using LFSR-dithering. This method can be implemented on MASH and single-loop DDSMs of 3rd- and 2nd-order.
ER -