半导体学报2011，Vol.32Issue(10)：120-125,6.DOI:10.1088/1674-4926/32/10/105006
An RF front-end with an automatic gain control technique for a U/V band CMMB receiver
An RF front-end with an automatic gain control technique for a U/V band CMMB receiver
Zhao Jinxin 1Hu Xueqing 1Shi Yin 1Wang Lei1
作者信息
- 1. Suzhou-CAS Semiconductor Integration R&D Center, Suzhou 215000, China
- 折叠
摘要
Abstract
This paper presents a fully integrated RF front-end with an automatic gain control (AGC) scheme and a digitally controlled radio frequency varied gain amplifier (RFVGA) for a U/V band China Mobile Multimedia Broadcasting (CMMB) direct conversion receiver.The RFVGA provides a gain range ofS0 dB with a 1.6 dB step.The adopted AGC strategy could improve immunity to adjacent channel signal,which is of importance for CMMB application.The front-end,composed of a low noise amplifier (LNA),an RFVGA,a mixer and AGC,achieves an input referred 3rd order intercept point (IIP3) of 4.9 dBm with the LNA in low gain mode and the RFVGA in medium gain mode,and a less than 4 dB double side band noise figure with both the LNA and the RFVGA in high gain mode.The proposed RF front-end is fabricated in a 0.35 μm SiGe BiCMOS technology and consumes 25.6 mA from a 3.0 V power supply.关键词
CMMB/ RF front-end/ RFVGA/ AGC/ LNA/ mixerKey words
CMMB/ RF front-end/ RFVGA/ AGC/ LNA/ mixer引用本文复制引用
Zhao Jinxin,Hu Xueqing,Shi Yin,Wang Lei..An RF front-end with an automatic gain control technique for a U/V band CMMB receiver[J].半导体学报,2011,32(10):120-125,6.
