| 一种用于低电压集成锁相环的省面积的双通道环路滤波器 |
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| 引用本文： | 潘杰,杨海钢,杨立吾. 一种用于低电压集成锁相环的省面积的双通道环路滤波器[J]. 半导体学报, 2009, 30(10): 105011-6 |
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| 作者姓名： | 潘杰 杨海钢 杨立吾 |
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| 摘 要： | This paper proposes an area-saving dual-path loop filter（LPF）for low-voltage integrated phase-locked loops（PLLs）.With this LPF,output current of the lowpass-path charge-pump（CP）is B times（B〉1）as great as that of the integration-path CP.By adding voltages across these two paths,the zero-capacitance is magnified B times equivalently.As a result,the chip size is greatly reduced.Based on this LPF,a 1.2 V 3.5 GHz-band PLL is fabricated in SMIC 0.18μm RFCMOS technology.Its zero-capacitance is only 1/30 of that in conventional second-order LPFs. Measured data show that,at a frequency of 3.20 GHz,phase noise is–120.2 dBc/Hz at 1 MHz offset,reference spur is–72 dBc,and power is 24 mW.
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| 关 键 词： | 集成锁相环 环路滤波器 双通道 节能 低通滤波器 低压 聚合硫酸铁 输出电流 |
| 收稿时间： | 2009-04-13 |
| 修稿时间： | 2009-05-18 |
An area-saving dual-path loop filter for low-voltage integrated phase-locked loops |
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| Pan Jie,Yang Haigang and Yang Liwu. An area-saving dual-path loop filter for low-voltage integrated phase-locked loops[J]. Chinese Journal of Semiconductors, 2009, 30(10): 105011-6 |
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| Authors: | Pan Jie Yang Haigang Yang Liwu |
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| Affiliation: | Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, China; RF Application Group, SMIC, Shanghai 201203, China;Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China;RF Application Group, SMIC, Shanghai 201203, China |
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| Abstract: | area-saving dual-path loop filter charge-pump phase-locked loop |
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| Keywords: | area-saving dual-path loop filter charge-pump phase-locked loop |
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