A linear, low power, 2.5-dB NF LNA for UWB application in a 0.18 μm CMOS

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• 作者：Ismail Mohammadi ; ^{esmaeel.mohammadi82@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Ali Sahafi ^{a.sahafi@tabrizu.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Jafar Sobhi ^{sobhi@tabrizu.ac.ir" class="auth_mail" title="E-mail the corresponding author} ; Ziaddin Daei Koozehkanani ^{zdaie@tabrizu.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Broadband LNA ; Common Gate (CG) ; Feedback amplifier ; Linearity ; Volterra series
• 刊名：Microelectronics Journal
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：46
• 期：12
• 页码：1398-1408
• 全文大小：3881 K

文摘

This paper presents an ultra-wideband common-gate low-noise amplifier (UWB CG-LNA) that employs negative feedback to overcome the trade-off that exists between noise and input impedance matching while preserving linearity, stability, and low power operation. The proposed LNA has been designed and simulated via TSMC 0.18-μm CMOS. UWB LNA operates from 3.1 to 10.1 GHz. Designed LNA consumes 2.3 mA from a 1.8-V supply. Post-layout simulation shows that LNA achieves a maximum voltage gain of 13.7 dB, a minimum noise figure of 2.5 dB, better than 32a368ad0939254fdf0">$-10\mathrm{dB}$S₁₁ and +4.5$+4.5$ to $+9.5\mathrm{dBm}$ IIP₃ across the entire bandwidth. The Volterra series has been used to analyze the linearity of circuit.