| 压控振荡器相位噪声、功耗和频率调谐特性的设计优化 |
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| 引用本文： | Chen Nan,Diao Shengxi,Huang Lu,Bai Xuefei,Lin Fujiang. 压控振荡器相位噪声、功耗和频率调谐特性的设计优化[J]. 半导体学报, 2013, 34(9): 095009-6 |
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| 作者姓名： | Chen Nan Diao Shengxi Huang Lu Bai Xuefei Lin Fujiang |
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| 作者单位： | Department of Electronic Science and Technology,University of Science and Technology of China |
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| 摘 要： | To meet the requirements of the low power Zigbee system, VCO design optimizations of phase noise, power consumption and frequency tuning are discussed in this paper. Both flicker noise of tail bias transistors and up-conversion of flicker noise from cross-coupled pair are reduced by improved self-switched biasing technology, leading to low close-in phase noise. Low power is achieved by low supply voltage and triode region biasing. To linearly tune the frequency and get constant gain, distributed varactor structure is adopted. The proposed VCO is fabricated in SMIC 0.18-μm CMOS process. The measured linear tuning range is from 2.38 to 2.61 GHz. The oscillator exhibits low phase noise of -77.5 dBc/Hz and -122.8 dBc/Hz at 10 kHz and 1 MHz offset, respectively, at 2.55 GHz oscillation frequency while dissipating 2.7 mA from 1.2 V supply voltage, which well meet design specifications.
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| 关 键 词： | VCO flicker noise tuning characteristics low power |
| 收稿时间： | 2013-02-03 |
Design optimizations of phase noise, power consumption and frequency tuningfor VCO |
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| Chen Nan,Diao Shengxi,Huang Lu,Bai Xuefei and Lin Fujiang. Design optimizations of phase noise, power consumption and frequency tuningfor VCO[J]. Chinese Journal of Semiconductors, 2013, 34(9): 095009-6 |
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| Authors: | Chen Nan Diao Shengxi Huang Lu Bai Xuefei Lin Fujiang |
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| Affiliation: | Chen Nan;Diao Shengxi;Huang Lu;Bai Xuefei;Lin Fujiang;Department of Electronic Science and Technology,University of Science and Technology of China; |
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| Abstract: | |
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| Keywords: | VCO flicker noise tuning characteristics low power |
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