Post-Linearization of Differential CMOS Low Noise Amplifier Using Cross-Coupled FETs

The authors have proposed a new post-linearization technique for the CMOS differential LNA adopting a cross-coupled MOS pair biased at weak inversion region as a post-distortion canceller. The proposed technique enables the simultaneous optimization of low noise and high linear operation without a gain reduction, which is experimentally confirmed by the good noise performance and linearity improvement. The noise figure of the LNA with the CCPDC is almost same and the linearity is improved by 6.6dB consuming the similar power compared with the normal LNA operation.

Provided by: Journal of Semiconductor Technology and Science (JSTS) Topic: Hardware Date Added: Dec 2008 Format: PDF

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