Article
MOST moderate-weak-inversion region as the optimum design zone for CMOS 2.4-GHz CS-LNAs
Author/s | Fiorelli, Rafaella
Silveira Noguerol, Fernando Peralías Macías, Eduardo |
Publication Date | 2014 |
Deposit Date | 2018-05-21 |
Published in |
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Abstract | In this paper, the MOS transistor (MOST) moderate-inversion (MI)-weak-inversion (WI) region is shown to be the optimum design zone for CMOS 2.4-GHz common-source low-noise amplifiers (CS-LNAs) focused on low power consumption ... In this paper, the MOS transistor (MOST) moderate-inversion (MI)-weak-inversion (WI) region is shown to be the optimum design zone for CMOS 2.4-GHz common-source low-noise amplifiers (CS-LNAs) focused on low power consumption applications. This statement is supported by a systematic study where the MOST is analyzed in all-inversion regions using an exhaustive CS-LNA noise-figure (NF)-power-consumption optimization technique with power gain constraint. Effects of bias choke resistance and MOST capacitances are carefully included in the study to obtain more accurate results, especially for the MI-WI region. NF, power consumption, and gain versus the inversion region are described with design space maps, providing the designer with a deep insight of their tradeoffs. The Pareto-optimal design frontier obtained by calculation-showing the MI-WI region as the optimum design zone-is reverified by extensive electrical simulations of a high number of designs. Finally, one 90-nm 2.4-GHz CS-LNA Pareto optimal design is implemented. It achieves the best figure of merit considering under-milliwatt CS-LNAs published designs, consuming 684 μW, an NF of 4.36 dB, a power gain of 9.7 dB, and a third-order intermodulation intercept point of-4 dBm with load and source resistances of 50 Ω. |
Citation | Fiorelli, R., Silveira Noguerol, F. y Peralías Macías, E. (2014). MOST moderate-weak-inversion region as the optimum design zone for CMOS 2.4-GHz CS-LNAs. IEEE Transactions on Microwave Theory and Techniques, 62 (3), 556-566. |
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MOST Moderate Weak Inversion.pdf | 2.955Mb | [PDF] | View/ | |