A highly linear wideband CMOS low-noise amplifier based on current amplification for digital TV tuner applications

被引：15

作者：

Song, Seong-Sik ^{[1
]}

Im, Dong-Gu ^{[2
]}

Kim, Hong-Teuk ^{[2
]}

Lee, Kwyro ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Sch Elect & Comp Engn, Taejon 305701, South Korea

[2] LG Electe Inst Technol, Seoul 137724, South Korea

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 02期

关键词：

common-gate (CG) amplifier; current amplification; digital television (TV); low-noise amplifier (LNA); noise-canceling; positive current feedback; wideband;

D O I：

10.1109/LMWC.2007.915101

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A differential wideband low-noise amplifier (LNA) based on the current amplification scheme is presented for digital TV tuners. In order to highly improve the linearity and exploit the noise cancellation, a common-gate stage with positive current feedback is integrated in parallel with a common-source stage using the current mirror amplifier. The proposed 0.18-mu m CMOS LNA exhibits a power gain of 20.5 dB, an IIP3 of 2.7 dBm, an IIP2 of 43 dBm, and an average noise figure of 3.3 dB with 32.4 mW power consumption at a 1.8-V power supply and 0.12 mm(2) area.

引用

页码：118 / 120

页数：3

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