半导体学报2009，Vol.30Issue(3)：92-96,5.DOI:10.1088/1674-4926/3013/035002
A novel low-noise linear-in-dB intermediate frequency variable-gain amplifier for DRM/DAB tuners
A novel low-noise linear-in-dB intermediate frequency variable-gain amplifier for DRM/DAB tuners
Wang Keping 1Wang Zhigong 1Zhou Jianzheng 1Lei Xuemei 1Zhou Mingzhu1
作者信息
- 1. Institute of RF-& OE-ICs, Southeast University, Nanjing 210096, China
- 折叠
摘要
Abstract
A broadband CMOS intermediate frequency (IF) variable-gain amplifier (VGA) for DRM/DAB tuners is presented. The VGA comprises two cascaded stages: one is for noise-canceling and another is for signal-summing. The chip is fabricated in a standard 0.18/zm 1P6M RF CMOS process of SMIC. Measured results show a good linear-in-dB gain characteristic in 28 dB dynamic gain range of-10 to 18 dB. It can operate in the frequency range of 30-700 MHz and consumes 27 mW at 1.8 V supply with the on-chip test buffer. The minimum noise figure is only 3.1 dB at maximum gain and the input-referred 1 dB gain compression point at the minimum gain is-3.9 dBm.关键词
VGA/noise-canceling/linear-in-dB/CMOSKey words
VGA/noise-canceling/linear-in-dB/CMOS分类
信息技术与安全科学引用本文复制引用
Wang Keping,Wang Zhigong,Zhou Jianzheng,Lei Xuemei,Zhou Mingzhu..A novel low-noise linear-in-dB intermediate frequency variable-gain amplifier for DRM/DAB tuners[J].半导体学报,2009,30(3):92-96,5.
