A low-voltage BiCMOS transconductor with improved linearity for VHF continuous-time filters

被引：5
|
作者：
Lee, TS [1 ]
机构：
[1] Natl Yunlin Univ Sci & Technol, Dept Elect Engn, Yunlin, Taiwan
来源：
CIRCUITS SYSTEMS AND SIGNAL PROCESSING | 2001年 / 20卷 / 01期
关键词：
transconductor; continuous-time filters;
D O I：
10.1007/BF01204920
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new low-voltage Bipolar Complementary Metal Oxide Semiconductor (BiCMOS) triode transconductor with improved linearity suitable for very-high frequency continuous-time filters is proposed. The transconductance is tunable with a control voltage. Improved linearity is achieved using a translinear cross-coupled circuit that suppresses the major cause of nonlinearity. The output resistance of the transconductor is compensated, and the resulting output resistance can be fine-tuned by means of a separate voltage. The transconductor has a large bandwidth due to its parasitic poles that are at extremely high frequencies. The performance of the transconductor is demonstrated by simulation results.
引用
收藏
页码：27 / 36
页数：10
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