A Phase Interpolation Direct Digital Synthesizer with a Symmetrically Structured Delay Generator (Special Issue on Microwave and Millimeter Wave Technology)
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概要
- 論文の詳細を見る
We have developed a new type of phase interpolation direct digital synthesizer (DDS) with a symmetrically structured delay generator. The new DDS is similar to a sine output DDS in that it produces lower spurious signals, but it does not require a sine look-up table. The symmetrically structured delay generator reduces the periodic jitter in the most significant bit (MSB) of the DDS accumulator. The symmetrical structure enables the delay generator to produce highly accurate delay timing and eliminates the need to adjust the circuit constants. Experimental results confirm frequency synthesizer operation in which the spurious signal level is reduced to less than that of the accumulator.
- 社団法人電子情報通信学会の論文
- 1999-07-25
著者
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Nosaka Hideyuki
Ntt Network Innovation Laboratories
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Nosaka Hideyuki
Ntt Photonics Laboratories
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Nakagawa Tadao
Ste Telecommunication Engineering Co. Ltd.
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YAMAGISHI Akihiro
NTT Telecommunications Energy Laboratories
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Nakagawa Tadao
Ntt Network Innovation Laboratories
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Nakagawa T
Ntt Network Innovation Laboratories Ntt Corporation
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Yamagishi A
Ntt Corp. Atsugi‐shi Jpn
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