A Low-Voltage,Low-Power CMOS High Dynamic Range dB-Linear VGA for Super Heterodyne Receivers

作     者：董桥 耿莉 邵志标 Dong Qiao;Geng Li;Shao Zhibiao

作者机构：西安交通大学微电子学系西安710049 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2007年第28卷第11期

页      码：1690-1695页

摘      要：This paper presents a low-voltage low-power variable gain amplifier,which is applied in the automatic gain control loop of a super heterodyne receiver. Six stages are cascaded to provide an 81dB digitally controlled gain range in a 3dB step. The gain step error is less than 0.5dB. It operates at an intermediate frequency of 300kHz, and the power consumption is 1.35mW from a 1.8V supply. The prototype chip is implemented in a TSMC＇s 0.18μm 1P6M CMOS process and occupies approximately 0.24mm^2 . It is very suitable for portable wire- less communication systems. The measurement results agree well with the system requirements.

主 题 词：variable gain amplifier low voltage low power super heterodyne receiver CMOS RF integratedcircuits 

学科分类：080902[080902] 0809[工学-计算机类] 08[工学] 

核心收录：

D　O　I：10.3969/j.issn.1674-4926.2007.11.005

馆 藏 号：203162394...