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Communication Dans Un Congrès Année : 2010

Dynamic Biasing Techniques for RF Power Amplifier Linearity and Efficiency Improvement

Résumé

Nowadays, mobile handsets have to deal with several challenges. First of all, a good efficiency is essential in order to save power and battery life-time. Then, to cater to multi-standards operation which provide very high data rates, strong linearity performances are mandatory, to the expense of transmit front-end efficiency. As RF Power Amplifiers (PAs) are the most power consuming components, this paper describes an approach of managing the efficiency-linearity trade-off by using dynamic biasing. The dynamic biasing allows a power control of the PA and is brought into play both with an open-loop solution and a closed-loop solution. The main purpose of the paper is to present a description of the circuits developed and their performances in terms of output power, linearity and efficiency. The reconfigurable PAs are dedicated to UMTS-WCDMA and WiFi/WiMAX standards.
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Dates et versions

hal-00474101 , version 1 (19-04-2010)

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  • HAL Id : hal-00474101 , version 1

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Nathalie Deltimple, Laurent Leyssenne, Eric Kerherve, Yann Deval, Didier Belot. Dynamic Biasing Techniques for RF Power Amplifier Linearity and Efficiency Improvement. International Conference on IC Design and Technology (ICICDT), Jun 2010, Grenoble, France. ⟨hal-00474101⟩
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