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	CMOS voltage-controlled oscillator with automatic amplitude control
	Zhang Li ; Wu Ende ; Wang Zhihua ; Chen Hongyi
	2010-05-07 ; 2010-05-07
关键词	Practical Theoretical or Mathematical/ circuit tuning CMOS integrated circuits feedback oscillators low-pass filters peak detectors voltage-controlled oscillators/ CMOS VCO tuning range voltage-controlled oscillator automatic amplitude control peak detector comparator low pass filter feedback loop 0.35 micron 18.2 to 24.3 MHz/ B1230B Oscillators B2570D CMOS integrated circuits B1250 Modulators, demodulators, discriminators and mixers C3340H Control of electric power systems/ size 3.5E-07 m frequency 1.82E+07 to 2.43E+07 Hz
中文摘要	The tuning range is an important performance parameter of voltage-controlled oscillators (VCO), but as the tuning range increases, the oscillator amplitude will vary at different frequencies. This paper present a circuit for automatic amplitude control that ensures that the oscillators amplitude remains constant. The automatic amplitude control uses a peak detector, a comparator and a low pass filter. The automatic amplitude control is connected to the VCO by a feedback loop to keep the VCO output constant. The circuits were fabricated using a standard 0.35 mu m complementary metal oxide semiconductor (CMOS) process. The measured VCO tuning range was from 18.2 MHz to 24.3 MHz, for a range of 28.7% while the automatic amplitude control circuit ensures that the VCO amplitude only varies by 8.7%.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/16503]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Li,Wu Ende,Wang Zhihua,et al. CMOS voltage-controlled oscillator with automatic amplitude control[J],2010, 2010.
APA	Zhang Li,Wu Ende,Wang Zhihua,&Chen Hongyi.(2010).CMOS voltage-controlled oscillator with automatic amplitude control..
MLA	Zhang Li,et al."CMOS voltage-controlled oscillator with automatic amplitude control".(2010).

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