| 一种低功耗C类LC压控振荡器 |
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| 引用本文： | 王伟,查欢,林福江,刁盛锡.一种低功耗C类LC压控振荡器[J].微电子学,2017,47(1):60-62, 66. |
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| 作者姓名： | 王伟 查欢 林福江 刁盛锡 |
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| 作者单位： | 中国科学技术大学 电子科学与技术系, 合肥 230026,中国科学技术大学 电子科学与技术系, 合肥 230026,中国科学技术大学 电子科学与技术系, 合肥 230026,中国科学技术大学 电子科学与技术系, 合肥 230026 |
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| 摘 要： | 采用SMIC 65 nm标准CMOS工艺,设计了一种新型的低功耗电容电感压控振荡器(LC VCO)。采用幅度监测负反馈技术,保证振荡器正常启动并且工作于C类工作状态,最大程度地增加输出摆幅。与常规C类电容电感压控振荡器不同,采用电流复用技术可以在保证性能不变的情况下使VCO的功耗下降50％。后仿真结果表明,在1.2 V电源电压下,该压控振荡器的功耗为1.1 mW,相位噪声为-123 dBc/Hz @1 MHz,FOM为190,振荡频率范围为2.3~2.6 GHz,可调谐范围为12%。
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| 关 键 词： | 压控振荡器 幅度负反馈 C类 电流复用 |
| 收稿时间： | 2016/2/2 0:00:00 |
A Low Power Class-C LC Voltage Controlled Oscillator |
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| WANG Wei,ZHA Huan,LIN Fujiang and DIAO Shengxi.A Low Power Class-C LC Voltage Controlled Oscillator[J].Microelectronics,2017,47(1):60-62, 66. |
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| Authors: | WANG Wei ZHA Huan LIN Fujiang and DIAO Shengxi |
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| Affiliation: | Department of Electronic Science and Technology, Univ. of Sci. and Technol. of China , Hefei 230026,P. R. China,Department of Electronic Science and Technology, Univ. of Sci. and Technol. of China , Hefei 230026,P. R. China,Department of Electronic Science and Technology, Univ. of Sci. and Technol. of China , Hefei 230026,P. R. China and Department of Electronic Science and Technology, Univ. of Sci. and Technol. of China , Hefei 230026,P. R. China |
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| Abstract: | Based on a standard SMIC 65 nm CMOS process, a new low power LC voltage controlled oscillator was designed. The technology of amplitude negative feedback loop was used to guarantee the oscillator''s robust start-up and ensure the oscillator to work in class-C region, so as to maximize the output swing. Compared with classical differential-pair voltage controlled oscillator, the proposed voltage controlled oscillator only needed half of the power budget while the other performances maintained by using the current reusing technology. Post-simulation results showed that the power consumption was 1.1 mW at 1.2 V power supply, the phase noise was -123 dBc/Hz at 1 MHz offset frequency, the figure of merit(FOM) was 190, the oscillating frequency was from 2.3 to 2.6 GHz, and the tuning range was about 12%. |
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