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首页> 外文期刊>IEEE Journal of Solid-State Circuits >Sub-0.2 dB Noise Figure Wideband Room-Temperature CMOS LNA With Non-50 $Omega$ Signal-Source Impedance
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Sub-0.2 dB Noise Figure Wideband Room-Temperature CMOS LNA With Non-50 $Omega$ Signal-Source Impedance

机译:低于0.2 dB的噪声系数,宽带非室温CMOS LNA(非50Ω信号源阻抗)

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This paper presents a wideband low-noise amplifier (LNA) designed to be used as the first stage of the receiver in the Square Kilometer Array radio telescope. The LNA design procedure and its layout features are discussed. The noise figure optimization procedure determines the signal-source resistance that results in reduced noise figure. When used in the radio telescope, the required signal-source resistance will be presented by the telescope custom-made antenna elements. The LNA, designed in 90 nm bulk CMOS, achieves sub-0.2 dB noise figure from 800 MHz to 1400 MHz, return loss of more than 11 dB, gain $(S_{21})$ of more than 17 dB driven into a 50 $Omega$ load, output 1 dB compression point of 2 dBm, output IP3 of 12 dBm, and output IP2 of 22 dBm while consuming 43 mA from a 1 V supply. In the LNA implementation presented in this paper the load choke inductor and the source inductor are integrated whereas the gate-, bias-, and the choke-inductor between two transistors of the cascode are external. The noise figure of the presented LNA is to our knowledge the lowest noise figure achieved by a power matched wideband CMOS LNA at room temperature.
机译:本文提出了一种宽带低噪声放大器(LNA),该放大器设计用作平方公里阵列射电望远镜的接收器的第一级。讨论了LNA的设计程序及其布局特征。噪声系数优化过程确定了导致噪声系数降低的信号源电阻。在射电望远镜中使用时,所需的信号源电阻将由望远镜定制的天线元件显示。 LNA采用90 nm大块CMOS设计,在800 MHz至1400 MHz范围内可实现低于0.2 dB的噪声系数,回波损耗超过11 dB,驱动到50 MHz时的增益(S_ {21})$超过17 dB。 $ Omega $负载,输出1 dB压缩点为2 dBm,输出IP3为12 dBm,输出IP2为22 dBm,同时从1 V电源消耗43 mA的电流。在本文介绍的LNA实现中,负载扼流电感器和源极电感器集成在一起,而共源共栅两个晶体管之间的栅极,偏置和扼流电感器是外部的。据我们所知,所提出的LNA的噪声系数是在室温下通过功率匹配的宽带CMOS LNA实现的最低噪声系数。

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