The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Kertas kerja ini membentangkan teknik penindasan rangsangan baru menggunakan nadi penahan tiga fasa untuk pensintesis digital terus (DDS) dengan penukar digital-ke-analog penahan dua fasa (2PH-DAC). 2PH-DAC, yang menggunakan fungsi langkah tanda terbalik sebagai bentuk gelombang nadi pensampelan dan bukannya fungsi get yang biasa digunakan bagi penahanan tertib sifar, meningkatkan imej pertama pengalianan, yang frekuensinya lebih tinggi daripada asas. Oleh itu, imej pertama boleh dianggap sebagai isyarat yang dikehendaki, manakala imej asas dan kedua adalah taji untuk DDS dengan 2PH-DAC (2PH-DDS). Masalah utama 2PH-DDS adalah taji rapat dalam kes frekuensi isyarat hampir dengan frekuensi Nyquist atau frekuensi pensampelan. Makalah ini mencadangkan teknik penindasan merangsang novel untuk 2PH-DDS. Konfigurasi 2PH-DDS pertama kali dijelaskan, dan sifat spektrum dianalisis. Berdasarkan analisis, teknik menggunakan nadi penahan tiga fasa untuk membatalkan taji dicadangkan. Tahap rangsangan yang dinilai bagi pensintesis yang dicadangkan adalah dari -51 hingga -34 dBc, dan dipertingkatkan sebanyak 25 dB atau lebih dengan teknik yang dicadangkan.
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Salinan
Kenichi TAJIMA, Ryoji HAYASHI, "A Novel Spur Suppression Technique Using Three-Phase Holding Pulse for High-Frequency-Output Direct Digital Synthesizer" in IEICE TRANSACTIONS on Electronics,
vol. E93-C, no. 7, pp. 1014-1021, July 2010, doi: 10.1587/transele.E93.C.1014.
Abstract: This paper presents a novel spur suppression technique using a three-phase holding pulse for a direct digital synthesizer (DDS) with a two-phase holding digital-to-analog converter (2PH-DAC). A 2PH-DAC, which uses a reverse-sign step-function as a sampling pulse waveform instead of a commonly-used gate function of zeroth-order hold, enhances the first image of aliasing, which is of higher frequency than the fundamental. Therefore, the first image can be treated as a desired signal, while the fundamental and the second image are spurs for a DDS with a 2PH-DAC (2PH-DDS). The main problem of the 2PH-DDS is close spurs in the case that signal frequency is near Nyquist frequency or sampling frequency. This paper proposes a novel spur suppression technique for a 2PH-DDS. A configuration of a 2PH-DDS is first explained, and spectral properties are analyzed. Based on the analysis, a technique using a three-phase holding pulse to cancel spurs is proposed. Evaluated spur levels of the proposed synthesizer are from -51 to -34 dBc, and are improved by 25 dB or more by the proposed technique.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E93.C.1014/_p
Salinan
@ARTICLE{e93-c_7_1014,
author={Kenichi TAJIMA, Ryoji HAYASHI, },
journal={IEICE TRANSACTIONS on Electronics},
title={A Novel Spur Suppression Technique Using Three-Phase Holding Pulse for High-Frequency-Output Direct Digital Synthesizer},
year={2010},
volume={E93-C},
number={7},
pages={1014-1021},
abstract={This paper presents a novel spur suppression technique using a three-phase holding pulse for a direct digital synthesizer (DDS) with a two-phase holding digital-to-analog converter (2PH-DAC). A 2PH-DAC, which uses a reverse-sign step-function as a sampling pulse waveform instead of a commonly-used gate function of zeroth-order hold, enhances the first image of aliasing, which is of higher frequency than the fundamental. Therefore, the first image can be treated as a desired signal, while the fundamental and the second image are spurs for a DDS with a 2PH-DAC (2PH-DDS). The main problem of the 2PH-DDS is close spurs in the case that signal frequency is near Nyquist frequency or sampling frequency. This paper proposes a novel spur suppression technique for a 2PH-DDS. A configuration of a 2PH-DDS is first explained, and spectral properties are analyzed. Based on the analysis, a technique using a three-phase holding pulse to cancel spurs is proposed. Evaluated spur levels of the proposed synthesizer are from -51 to -34 dBc, and are improved by 25 dB or more by the proposed technique.},
keywords={},
doi={10.1587/transele.E93.C.1014},
ISSN={1745-1353},
month={July},}
Salinan
TY - JOUR
TI - A Novel Spur Suppression Technique Using Three-Phase Holding Pulse for High-Frequency-Output Direct Digital Synthesizer
T2 - IEICE TRANSACTIONS on Electronics
SP - 1014
EP - 1021
AU - Kenichi TAJIMA
AU - Ryoji HAYASHI
PY - 2010
DO - 10.1587/transele.E93.C.1014
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E93-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2010
AB - This paper presents a novel spur suppression technique using a three-phase holding pulse for a direct digital synthesizer (DDS) with a two-phase holding digital-to-analog converter (2PH-DAC). A 2PH-DAC, which uses a reverse-sign step-function as a sampling pulse waveform instead of a commonly-used gate function of zeroth-order hold, enhances the first image of aliasing, which is of higher frequency than the fundamental. Therefore, the first image can be treated as a desired signal, while the fundamental and the second image are spurs for a DDS with a 2PH-DAC (2PH-DDS). The main problem of the 2PH-DDS is close spurs in the case that signal frequency is near Nyquist frequency or sampling frequency. This paper proposes a novel spur suppression technique for a 2PH-DDS. A configuration of a 2PH-DDS is first explained, and spectral properties are analyzed. Based on the analysis, a technique using a three-phase holding pulse to cancel spurs is proposed. Evaluated spur levels of the proposed synthesizer are from -51 to -34 dBc, and are improved by 25 dB or more by the proposed technique.
ER -