| 具有自动频率校准的宽频率范围Σ-Δ小数频率综合器 |
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| 引用本文： | 魏建军,姜汉钧,张凌伟,董晶晶,李福乐,王志华,张春.具有自动频率校准的宽频率范围Σ-Δ小数频率综合器[J].半导体学报,2013,34(6):065002-5. |
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| 作者姓名： | 魏建军 姜汉钧 张凌伟 董晶晶 李福乐 王志华 张春 |
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| 作者单位： | Institute of Microelectronics,Tsinghua University |
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| 基金项目： | 国家高技术研究发展计划(863)项目-低功耗消化道无线检测便携式基站SoC芯片设计及应用系统开发 |
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| 摘 要： | A wide range fractional-N frequency synthesizer in 0.18μm RF CMOS technology is implemented. A switched-capacitors bank LC-tank VCO and an adaptive frequency calibration technique are used to expand the frequency range.A 16-bit third-order sigma-delta modulator with dither is used to randomize the fractional spur. The active area is 0.6 mm~2.The experimental results show the proposed frequency synthesizer consumes 4.3 raA from a single 1.8 V supply voltage except for buffers.The frequency range is 1.44-2.11 GHz and the frequency resolution is less than 0.4 kHz.The phase noise is -94 dBc/Hz @ 100 kHz and -121 dBc/Hz @ 1 MHz at the output of the prescaler with a loop bandwidth of approximately 120 kHz.The performance meets the requirements for the multi-band and multi-mode transceiver applications.
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| 关 键 词： | adaptive frequency calibration fractional frequency synthesizer wide frequency range |
| 收稿时间： | 8/3/2012 8:49:51 PM |
A wide range sigma-delta fractional-N frequency synthesizer with adaptive frequency calibration |
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| Wei Jianjun,Jiang Hanjun,Zhang Lingwei,Dong Jinjin,Li Fule,Wang Zhihua and Zhang Chun.A wide range sigma-delta fractional-N frequency synthesizer with adaptive frequency calibration[J].Chinese Journal of Semiconductors,2013,34(6):065002-5. |
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| Authors: | Wei Jianjun Jiang Hanjun Zhang Lingwei Dong Jinjin Li Fule Wang Zhihua and Zhang Chun |
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| Affiliation: | Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China;Institute of Microelectronics, Tsinghua University, Beijing 100084, China |
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| Abstract: | |
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| Keywords: | adaptive frequency calibration fractional frequency synthesizer wide frequency range |
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