A Wideband Low-Power CMOS LNA With Positive–Negative Feedback for Noise, Gain, and Linearity Optimization
Microwave Theory and Techniques, IEEE Transactions（2012）
摘要
A wideband common-gate (CG) low-noise amplifier (LNA) utilizing positive-negative-feedback technique is presented. The positive-negative-feedback technique boosts effective transconductance (Gm) and output impedance, which leads to an LNA with higher gain and lower noise figure (NF) over the previously reported amplifiers. In addition, this approach provides high linearity with an aid of third harmonic cancellation, and it breaks transconductance (gm) constriction for input matching in CG amplifiers. In this paper, linearity and output impedance improvement through the proposed technique are fully analyzed. An LNA prototype is implemented in 0.18- μm CMOS technology occupying a total area of 0.33 mm2. The implemented LNA delivers a maximum voltage gain of 21 dB, a minimum NF of 2 dB, an third-order intermodulation intercept point of -3.2 dBm, and 3.6 mW of power consumption in 300-920 MHz of 3-dB bandwidth with input matching (S11 <; -10 dB).
更多查看译文
关键词
cmos analogue integrated circuits,uhf amplifiers,low noise amplifiers,low-power electronics,wideband amplifiers,cg amplifiers,frequency 300 mhz to 920 mhz,gain 21 db,gain optimization,harmonic cancellation,linearity improvement,linearity optimization,noise figure,noise figure 2 db,noise optimization,output impedance improvement,positive-negative feedback technique,power 3.6 mw,size 0.18 mum,third-order intermodulation intercept point,transconductance,wideband common-gate low-noise amplifier,wideband low-power cmos lna,cmos,common gate (cg),feedback,low-noise amplifier (lna),multistandard,wideband,noise measurement,low power electronics,topology,impedance matching,noise,stability analysis,impedance
AI 理解论文
溯源树
样例
生成溯源树，研究论文发展脉络
Chat Paper
正在生成论文摘要