一种用于超宽带的新型CMOS低噪声放大器

2012 Second International Conference on Advanced Computing & Communication Technologies Pub Date : 2012-01-07 DOI:10.1109/ACCT.2012.8

P. Manikandan, A. S. Areeckal

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引用次数: 3

摘要

本文介绍了一种用于超宽带应用的CMOS可变增益低噪声放大器的设计。将电流复用技术应用于电阻式反馈放大器，以扩大增益调谐范围。一个普通的源放大器是级联编码，以实现高增益和增益可控性。LNA的工作电压为1.4V，采用台积电0.18μm CMOS技术。在3 ~ 9ghz带宽范围内，LNA的功率增益为22±5db，噪声系数为3.5 ~ 4.8。功率增益(S21)大于10dB，反向隔离(S12)小于22db。

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A Novel CMOS Low Noise Amplifier for UWB Application

This paper presents the design of a CMOS variable gain low noise amplifier used for ultra wideband applications. A current reuse technique is applied to the resistive feedback amplifier to widen the gain tuning range. A common source amplifier is cascoded to achieve high gain and gain controllability. The LNA is designed to operate at 1.4V supply voltage and is implemented in TSMC 0.18μm CMOS technology. The power gain of the LNA is 22±5 dB and the noise figure varies from 3.5 to 4.8 within the bandwidth from 3 to 9 GHz. The power gain (S21) is obtained more than 10dB and the reverse isolation (S12) is below-22dB.

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2012 Second International Conference on Advanced Computing & Communication Technologies

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