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Positive envelope feedback for linearity improvement in RFIC PAs


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Sharma, Smarjeet, Constantin, Nicolas G. et Soliman, Yasser. 2017. « Positive envelope feedback for linearity improvement in RFIC PAs ». In 27th International Conference Radioelektronika (RADIOELEKTRONIKA) (Brno, Czech Republic, Czech Republic, Apr. 19-20, 2017) IEEE.
Compte des citations dans Scopus : 1.

Constantin N. 2017 15337 Positive envelope feedback for linearity.pdf - Accepted Version
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This paper introduces a dynamic biasing technique intended for Radio Frequency Integrated Circuit (RFIC) power amplifiers (PAs), using positive envelope feedback based on the instantaneous envelope signal at the output of the PA, for linearity improvement. Through the simulation, design and implementation of a 5.4 GHz SOI-CMOS PA, we demonstrate that the proposed positive envelope feedback technique allows extending the output 1 dB compression (P1dB) point by 1.7 dB while meeting stability and noise requirements for a PA with P1dB of 19.5 dB m. As a result, the same linearity performance is met at a higher power level, without resorting to device size increase and the associated current increase. Hence, the technique improves the efficiency/linearity trade-off. Moreover, the described technique requires negligible additional quiescent current, minimum additional chip area and has the potential for wide bandwidths, which makes it attractive for RFIC PAs.

Item Type: Conference proceeding
Constantin, Nicolas
Affiliation: Génie électrique
Date Deposited: 09 Jun 2017 17:57
Last Modified: 22 Jan 2020 19:38

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