A high-gain, low-noise 3.1–10.6 GHz ultra-wideband LNA in a 0.18μm CMOS

Majlesi Journal of Electrical Engineering

مقاله 1، دوره 11، شماره 2، شهریور 2017   

نوع مقاله: Review Article

نویسندگان

Hamid Nooralizadeh^{* 1}؛ Behnam Babazadeh Daryan²

¹Islamshahr Branch, Islamic Azad University

²Electrical Engineering Department, Islamshahr Branch, Islamic Azad University, Islamshahr, Tehran, Iran

چکیده

An ultra-wideband (UWB) common gate-common source (CG-CS) low-noise amplifier (LNA) in a 0.18μm CMOS technology is presented in this paper. To obtain a high and flat power gain with low noise and good input impedance matching in the entire 3.1–10.6 GHz UWB band among low power consumption, a capacitive cross-coupling fully differential amplifier with the current-reuse technique is proposed. The current–reuse technique is used to achieve a wideband and reduce power consumption. The capacitor cross coupling technique is used to gm-boosting and hence to improve the NF of the amplifier. Therefore, the dependency between noise figure (NF) and input impedance matching is reduced. The proposed CG-CS amplifier has a fairly low NF compared with the other previous works in similar technology. In addition, a good power gain over all bandwidth and a high isolation with good input/output impedance matching are achieved. The minimum NF is 1.8 dB, the maximum power gain is 14.2 dB, the inverse gain is <-50 dB, the input and output matching S11 and S22 are <-10.3 dB and <-11.3 dB, respectively. Moreover, the input third-order intercept point (IIP3) is -5 dBm with core power consumption of 10.1 mW and supply voltage of 1.8 V.

کلیدواژه‌ها

LNA؛ en؛ UWB؛ CMOS technology؛ Current-reuse technique؛ Capacitive cross-coupling technique؛ CG-CS amplifier

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