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    题名: Post-linearization with image rejection for high IIP3 and image-rejection ratio of a 17 GHz CMOS low noise amplifier
    作者: Chiou,HK;Yang,TY
    贡献者: 電機工程學系
    关键词: DERIVATIVE SUPERPOSITION METHOD;RECEIVER FRONT-END;WIRELESS LAN;TRANSCEIVER;TECHNOLOGY;DESIGN
    日期: 2010
    上传时间: 2012-03-28 10:12:23 (UTC+8)
    出版者: 國立中央大學
    摘要: This study develops a post-linearization technique to simultaneously improve the input third-order intercept point (IIP3) and image-rejection ratio (IRR) of a 17 GHz low noise amplifier (LNA) in a 0.18 mu m standard CMOS process. A third-order intermodulation distortion (IMD3) compensator constructed by a second-order notch filter was proposed to achieve both high linearity and image reject (IR) of the cascode LNA. The correlation between the post-linearization and IR techniques is analyzed and discussed. The measured LNA achieved a gain of 16.5 dB, a noise figure (NF) of 4.58 dB, an IIP3 of 0 dBm, and an IRR from 68 to 78 dB. The improvements of IIP3 and IRR are 11.7 and 46 dB, respectively, better than that of the LNA without the notch filter. The proposed IR LNA with total current dissipation of 4.8 mA under 1.8 V supply voltage and notch filter only dissipate a DC power of 2 mW. (C) 2010 Elsevier Ltd. All rights reserved.
    關聯: MICROELECTRONICS JOURNAL
    显示于类别:[電機工程學系] 期刊論文

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