In the literature, for Zigbee receivers using cascode LNAs, a number of techniques such as gain-boosting, derivative superposition technique and forward body bias have been proposed individually for improving the gain, linearity and reducing the power dissipation of the LNA respectively. In this paper, a cascode LNA which combines all the three techniques is proposed. To study the efficacy of combining the three techniques, the proposed LNA is designed in UMC 0.18-µm standard CMOS process with the supply voltage of 1.0 V and studied through post-layout simulation at 2.4 GHz ISM band. The LNA which combines all the three techniques is found to be superior compared to the LNAs which use only two of the above techniques. This LNA also has better gain (25.63 dB), better linearity (5.8 dBm) and better figure of merits at the cost of marginal increase in the noise figure (2.45 dB) and power dissipation (2.77 mW) compared to the LNAs reported in the literature.
Wireless Personal Communications – Springer Journals
Published: Apr 27, 2017
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