| Presentation | 2010-07-23 Self-Dithered Digital Delta-Sigma Modulators for Fractional-N Frequency Synthesizers Zule Xu, Jun Gyu Lee, Shoichi Masui, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital delta-sigma modulators applied in fractional-N frequency synthesizers suffer from spurious tones which undermine the synthesizer's spectral integrity. Major conventional solutions include initial condition setup, structural modification, and dithering. For the first one the effectiveness is limited, while for the latter two, extra design effort and hardware overhead are required. In this paper, we propose a novel dithering method with simple implementation and no hardware overhead while achieving effective spur elimination. This method is implemented on MASH and single-loop DDSMs. Simulation results compared with conventional solutions prove its effectiveness. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital delta-sigma modulator(DDSM) / fractional-N frequency synthesizer / PLL / dither / MASH / single-loop |
| Paper # | ICD2010-36 |
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| Conference Information | |
| Committee | ICD |
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| Conference Date | 2010/7/15(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Integrated Circuits and Devices (ICD) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Self-Dithered Digital Delta-Sigma Modulators for Fractional-N Frequency Synthesizers |
| Sub Title (in English) | |
| Keyword(1) | Digital delta-sigma modulator(DDSM) |
| Keyword(2) | fractional-N frequency synthesizer |
| Keyword(3) | PLL |
| Keyword(4) | dither |
| Keyword(5) | MASH |
| Keyword(6) | single-loop |
| 1st Author's Name | Zule Xu |
| 1st Author's Affiliation | Tohoku University, Research Institute of Electrical Communication() |
| 2nd Author's Name | Jun Gyu Lee |
| 2nd Author's Affiliation | Tohoku University, Research Institute of Electrical Communication |
| 3rd Author's Name | Shoichi Masui |
| 3rd Author's Affiliation | Tohoku University, Research Institute of Electrical Communication |
| Date | 2010-07-23 |
| Paper # | ICD2010-36 |
| Volume (vol) | vol.110 |
| Number (no) | 140 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |