Wideband variable-gain amplifiers based on a pseudo-current-steering gain-tuning technique

• Main Authors: Kong, Lingshan, Chen, Yong, Yu, Haohong, Pan, Quan, Boon, Chirn Chye, Mak, Pui-In, Martins, Rui P.
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Electrical and electronic engineering; Variable-gain Amplifier (VGA); CMOS
• Online Access: https://hdl.handle.net/10356/141095
• Institution: Nanyang Technological University

This paper reports two variable-gain amplifiers (VGAs) featuring a new pseudo-current-steering gain-tuning technique. In the first VGA (VGA-I), a single-voltage-controlled dual-branch current mirror is exploited as a standalone gain control block. In the second VGA (VGA-II), two NMOS transistors, wh...