Variable-gain amplifier
Title：
Variable-gain amplifier
Application Number：
 02125266
Application Date：
 2002/07/22
Announcement Date：
 2003/01/01
Pub. Date：
Publication Number：
 1388644
Announcement Number：
 1141788
Grant Date：
Granted Pub. Date：
 2004-3-10
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H03F 3/16
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Li Yongming, Zheng Jihua
Key Words：
 Variable-gain amplifier
Abstract：
 The present invention belongs to the field of analog signal treatment and communication technology and relates to variable-gain amplifier. The variable-gain amplifier includes several cascaded basic variable-gain units and one control voltage generator connected to the variable-gain units. The variable-gain amplifier features that basic variable-gain unit comprising several parallelly connected multi-stage stacked resistor-degenerate MOS pairs and two load resistors connected to the degenerate MOS pairs. The present invention may be realized via CMOS technological process and has the advantages of great controlled-voltage range, linear gain, great dynamic range, low working voltage and low power consumption.
Claim：
Priority：
PCT：
LegalStatus：

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