Spurious Reduction Techniques for DDS-Based Synthesizers
Summary :
This paper analyzes the spurious sources in DDS synthesizers and deduces the simple model of DDS output signal. The method of feeding pseudo-random noise into the phase accumulator for spurious reduction is discussed. A new method for spurious reduction by compensating for DAC integer nonlinearity is proposed with two DACs and a power combiner. One DAC generates the error signal to compensate for the other DAC INL. The factor how the amplitude error and the phase error between the two combined signals affect the spurious level is also analyzed. The experiment shows that the spurious reduction can be improved by at least 18 dB, which proves the validity of the DAC INL compensation method for the spurious reduction.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E92-C No.2 pp.252-257
- Publication Date
- 2009/02/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E92.C.252
- Type of Manuscript
- PAPER
- Category
- Electronic Circuits
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Keyword
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Jianming ZHOU, "Spurious Reduction Techniques for DDS-Based Synthesizers" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 2, pp. 252-257, February 2009, doi: 10.1587/transele.E92.C.252.
Abstract: This paper analyzes the spurious sources in DDS synthesizers and deduces the simple model of DDS output signal. The method of feeding pseudo-random noise into the phase accumulator for spurious reduction is discussed. A new method for spurious reduction by compensating for DAC integer nonlinearity is proposed with two DACs and a power combiner. One DAC generates the error signal to compensate for the other DAC INL. The factor how the amplitude error and the phase error between the two combined signals affect the spurious level is also analyzed. The experiment shows that the spurious reduction can be improved by at least 18 dB, which proves the validity of the DAC INL compensation method for the spurious reduction.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.252/_p
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@ARTICLE{e92-c_2_252,
author={Jianming ZHOU, },
journal={IEICE TRANSACTIONS on Electronics},
title={Spurious Reduction Techniques for DDS-Based Synthesizers},
year={2009},
volume={E92-C},
number={2},
pages={252-257},
abstract={This paper analyzes the spurious sources in DDS synthesizers and deduces the simple model of DDS output signal. The method of feeding pseudo-random noise into the phase accumulator for spurious reduction is discussed. A new method for spurious reduction by compensating for DAC integer nonlinearity is proposed with two DACs and a power combiner. One DAC generates the error signal to compensate for the other DAC INL. The factor how the amplitude error and the phase error between the two combined signals affect the spurious level is also analyzed. The experiment shows that the spurious reduction can be improved by at least 18 dB, which proves the validity of the DAC INL compensation method for the spurious reduction.},
keywords={},
doi={10.1587/transele.E92.C.252},
ISSN={1745-1353},
month={February},}
Copy
TY - JOUR
TI - Spurious Reduction Techniques for DDS-Based Synthesizers
T2 - IEICE TRANSACTIONS on Electronics
SP - 252
EP - 257
AU - Jianming ZHOU
PY - 2009
DO - 10.1587/transele.E92.C.252
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2009
AB - This paper analyzes the spurious sources in DDS synthesizers and deduces the simple model of DDS output signal. The method of feeding pseudo-random noise into the phase accumulator for spurious reduction is discussed. A new method for spurious reduction by compensating for DAC integer nonlinearity is proposed with two DACs and a power combiner. One DAC generates the error signal to compensate for the other DAC INL. The factor how the amplitude error and the phase error between the two combined signals affect the spurious level is also analyzed. The experiment shows that the spurious reduction can be improved by at least 18 dB, which proves the validity of the DAC INL compensation method for the spurious reduction.
ER -
English
