National Changhua University of Education Institutional Repository : Item 987654321/10840
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題名: A Low-Power Direct Digital Frequency Synthesiser
作者: Yi, Shu-Chung;Chen, Jin-Jia;Lin, Chien-Hung;Lee, Kun-Tse
貢獻者: 電機工程學系
關鍵詞: Direct digital frequency synthesiser (DDFS);Frequency synthesiser;Lookup table ROM;Digital circuit design
日期: 2008-01
上傳時間: 2012-06-04T08:35:10Z
出版者: Taylor and Francis Ltd.
摘要: This work presents a low power direct digital frequency synthesiser (DDFS) by using a new two-level lookup table algorithm. The algorithm uses trigonometric double angle formula to divide lookup table ROM into two parts. The ROM size of the proposed architecture is 25% less than that of conventional lookup table DDFS. The hardware of new DDFS architecture compared to the traditional two-level table DDFS also requires less one multiplication. A synthesised 0.35 µm DDFS with an spurious free dynamic range of −80 dB, runs up to 100 MHz and consumes 81 mW at 3.3 v. The power efficiency is 0.81 mW MHz−1, which represents an enhancement of more than 38% compared to the conventional DDFS.
關聯: International Journal of Electronics, 95(6): 593-599
顯示於類別:[電機工程學系] 期刊論文

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