半导体学报2009，Vol.30Issue(12)：123-127,5.DOI:10.1088/1674-4926/30/12/125012
Tunable current mirror and its application in LNA
Tunable current mirror and its application in LNA
摘要
Abstract
A novel topology of current mirror (CM) with tunable output current is proposed. Two methods for output current tuning are presented. The first one utilizes an analog input voltage for linear current output, and the second one has an N-bit digital input signal for 2~N un-continuous current outputs. A linearization method for low noise amplifier (LNA) is proposed and realized with this tunable CM. As the provider of the bias current, the CM has brought the LNA a lower NF (noise figure) and a higher IIP3 (input-referred third-order intercept point) compared with a conventional one. The experimental results show that the LNA achieves 1.47 dB NF and + 19.83 dBm IIP3 at 860 MHz.关键词
current mirror/ tunable/ LNA/ bias current/ linearizationKey words
current mirror/ tunable/ LNA/ bias current/ linearization分类
信息技术与安全科学引用本文复制引用
Li Kun,Teng Jianfu,Yu Changliang,Huang Jianyao..Tunable current mirror and its application in LNA[J].半导体学报,2009,30(12):123-127,5.基金项目
Project supported by the Tianjin Natural Science Foundation, China (No. 09JCYBJC00700). （No. 09JCYBJC00700）
