A Wide Tuning-Range CMOS VCO with a Tunable Active Inductor

被引：10
|
作者：
Kao, Hsuan-Ling [1 ]
Lee, Ping-Che [1 ]
Chiu, Hsien-Chin [1 ]
机构：
[1] Chang Gung Univ, Dept Elect Engn, Taoyuan 33302, Taiwan
来源：
MATHEMATICAL PROBLEMS IN ENGINEERING | 2015年 / 2015卷
关键词：
LC-VCO;
D O I：
10.1155/2015/382483
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study describes a wide tuning-range VCO using tunable active inductor (TAI) topology and cross-coupled pair configuration for radio frequency operation. The TAI used two feedback loops to form a cascode circuit to obtain more degrees of freedom for inductance value. The TAI-VCO was fabricated using a 0.18 mu m CMOS technology. The coarse frequency tuning is achieved by TAIs while the fine tuning is controlled by varactors. The fabricated circuit provides an output frequency range from 0.6 to 7.2GHz (169%). Themeasured phase noise is from -110.38 to -86.01 dBc/Hz at a 1MHz offset and output power is from -11.11 to -3.89 dBm within the entire frequency range under a 1.8V power supply.
引用
收藏
页数：7
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