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Power-Aware Multiband–Multistandard CMOS Receiver System-Level Budgeting

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3 Author(s)
El-Nozahi, M. ; Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA ; Sanchez-Sinencio, E. ; Entesari, K.

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.

Published in:

Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:56 ,  Issue: 7 )

Date of Publication:

July 2009

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