QQ客服 官方微博 反馈留言

	A voltage-controlled oscillator with an ultra-low supply voltage and its application to a fractional-N phase-locked loop
	Zhao, Bo ; Mao, Xiaojian ; Yang, Huazhong ; Wang, Hui
	2010-10-12 ; 2010-10-12 ; SEP,OCT
关键词	phase-locked loop (PLL) frequency synthesiser voltage-controlled oscillator (VCO) prescaler phase noise NOISE FEEDBACK Engineering, Electrical & Electronic
中文摘要	With feature size scaling, the supply voltage of digital circuits is becoming lower and lower. As a result, the supply voltage of analogue and RF circuits must also be reduced for system on chip (SoC) realisation. This article proposes an ultra-low-supply voltage-controlled oscillator (ULSVCO) and designs a sigma-delta fractional-N frequency synthesiser which adopts such ULSVCO. A mathematical phase-noise model is built here to describe the noise performance of the low-supply voltage-controlled oscillator (VCO). The substrate of the cross-coupled NMOSFETs in the proposed ULSVCO is not grounded but connected to the supply to further reduce the supply voltage. Implemented in 0.18 mu m CMOS technology, the proposed ULSVCO can be operated at a supply voltage as low as 0.41 V, the central frequency is set to 1.55 GHz, the phase noise is -116 dBc/Hz@1.0 MHz. The minimum supply voltage is decreased by about 11% after our idea is adopted and the power consumption of the ULSVCO is only 1.04 mW. With the proposed ULSVCO, we design a sigma-delta-modulator (SDM) fractional-N phase-locked loop frequency synthesiser, which has a 1.43-1.75 GHz frequency tuning range. When the loop bandwidth is set to 100 KHz, the phase noise of our PLL is -110 dBc/Hz@1.0 MHz.
语种	英语 ; 英语
出版者	TAYLOR & FRANCIS LTD ; ABINGDON ; 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82269]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao, Bo,Mao, Xiaojian,Yang, Huazhong,et al. A voltage-controlled oscillator with an ultra-low supply voltage and its application to a fractional-N phase-locked loop[J],2010, 2010, SEP,.
APA	Zhao, Bo,Mao, Xiaojian,Yang, Huazhong,&Wang, Hui.(2010).A voltage-controlled oscillator with an ultra-low supply voltage and its application to a fractional-N phase-locked loop..
MLA	Zhao, Bo,et al."A voltage-controlled oscillator with an ultra-low supply voltage and its application to a fractional-N phase-locked loop".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。