Power-Aware Multiband–Multistandard CMOS Receiver System-Level Budgeting
El-Nozahi, M.; Sanchez-Sinencio, E.; Entesari, K.
Circuits and Systems II: Express Briefs, IEEE Transactions on
Volume 56, Issue 7, July 2009 Page(s):570 - 574
Digital Object Identifier 10.1109/TCSII.2009.2023353
Summary:A systematic system-level design methodology for multiband-multistandard (MB-MS) wideband/reconfigurable CMOS receivers is presented. The methodology determines the specifications (noise figure (NF) and linearity) for each building block to minimize the overall power consumption. System-level simulations show that the gain variation of the LNA for various bands/standards is an important factor in minimizing the power consumption for any MB-MS receiver. Analytical expressions for the optimum gain variation of the LNA, NF, and input-referred third-order intercept point of each building block are presented. The design methodology is applied to a wideband receiver covering Global Systems for Mobile Communications (GSM) 900- and 1900-MHz bands, Global Positioning Systems (GPS), and wideband code-division multiple-access (WCDMA) standards. As an example, the estimated power consumption is reduced by 40% when compared with the approach where the gain of the LNA is constant.
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