华中师范大学学报（自然科学版）2011，Vol.45Issue(4)：573-577,5.
具有均衡时延修正功能的高频跨导电容滤波器
A high-frequency Gm-C filter with equalization delay tuning
摘要
Abstract
In this paper, a new structure transconductance-capacitor filter for high-frequency field is presented. It uses common-mode feedback circuit with differential cross-coupled high-frequency transconductance amplifier to stabilize the output voltage level and the static operating point. Based on the transconductance amplifier, a seven order low-pass Gm-C filter of cut-off frequency is 160 MHz is presented. For the defect of high-order elliptic function filter group delay, the equilibrium delay circuit which adjusts the number of group delay is designed. The simulation results show that the filter pass-band group delay decrease by 83. 1 % when adding group delay circuit. The method can be applied to high speed mixed signal circuit design and its related fields.关键词
跨导放大器/均衡时延/跨导电容滤波器/椭圆函数Key words
transconductance amplifier/ equilibrium delay/ Gm-C filter/ elliptic function分类
信息技术与安全科学引用本文复制引用
傅文渊,李国刚,凌朝东..具有均衡时延修正功能的高频跨导电容滤波器[J].华中师范大学学报（自然科学版）,2011,45(4):573-577,5.基金项目
国家自然科学基金项目(60772164) （60772164）
福建省科技计划基金项目(2011H6018) （2011H6018）
国务院侨务办公室基金项目(10QZR02). （10QZR02）
