A Novel Circuit Design of the Wideband VGA in CMOS

被引：0
|
作者：
Liu, Yuyang [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Int Sch, Beijing 102209, Peoples R China
来源：
MODERN TECHNOLOGIES IN MATERIALS, MECHANICS AND INTELLIGENT SYSTEMS | 2014年 / 1049卷
关键词：
wideband VGA; core unit; temperature compensation;
D O I：
10.4028/www.scientific.net/AMR.1049-1050.682
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a wideband variable-gain amplifier (VGA) in CMOS for ultra wideband (UWB) system is designed. The operation frequency of the VGA is 4.2-4.8GHz, and the gain is continuously adjustable between 0 and 30dB. Cascaded Cherry-Hooper with two stages is adopted as the core unit of the VGA, and a temperature compensation circuit is used to reduce the effect of temperature on the performance of the system. The simulation shows that the temperature compensation circuit can compensate the effect of the temperature very well, and the noise figure of the wideband VGA can meet the requirements of the system.
引用
收藏
页码：682 / 686
页数：5
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