A 0.18μm CMOS low noise amplifier using a current reuse technique for 3.1-10.6 GHz UWB receivers |
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作者姓名: | 王春华 万求真 |
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作者单位: | College of Information Science and Engineering,Hunan University |
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基金项目: | Project supported by the National Natural Science Foundation of China(No.60776021);the Open Fund Project of Key Laboratory in Hunan Universities,China(No.09K011) |
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摘 要: | A new,low complexity,ultra-wideband 3.1-10.6 GHz low noise amplifier(LNA),designed in a chartered 0.18μm RFCMOS technology,is presented.The ultra-wideband LNA consists of only two simple amplifiers with an inter-stage inductor connected.The first stage utilizing a resistive current reuse and dual inductive degeneration technique is used to attain a wideband input matching and low noise figure.A common source amplifier with an inductive peaking technique as the second stage achieves high flat gain and wide -3 dB bandwidth of the overall amplifier simultaneously.The implemented ultra-wideband LNA presents a maximum power gain of 15.6 dB,and a high reverse isolation of—45 dB,and good input/output return losses are better than -10 dB in the frequency range of 3.1-10.6 GHz.An excellent noise figure(NF) of 2.8-4.7 dB was obtained in the required band with a power dissipation of 14.1 mW under a supply voltage of 1.5 V.An input-referred third-order intercept point(IIP3) is -7.1 dBm at 6 GHz.The chip area,including testing pads,is only 0.8×0.9 mm2.
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关 键 词: | CMOS low noise amplifier ultra-wideband current reuse common source noise figure |
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