<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Pecile, Davide</style></author><author><style face="normal" font="default" size="100%">Gambarrucci, Alberto</style></author><author><style face="normal" font="default" size="100%">Kokorovic, Stefan</style></author><author><style face="normal" font="default" size="100%">Bevilacqua, A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">A Study of the Efficiency of Output-Matched Radiofrequency Power Amplifiers</style></title><secondary-title><style face="normal" font="default" size="100%">Analog Integrated Circuits and Signal Processing</style></secondary-title><short-title><style face="normal" font="default" size="100%">Analog Integrated Circuits and Signal Processing</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2025</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2025/10/17</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://doi.org/10.1007/s10470-025-02517-7</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">125</style></volume><pages><style face="normal" font="default" size="100%">42</style></pages><isbn><style face="normal" font="default" size="100%">1573-1979</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">This paper presents a large-signal analysis of radiofrequency power amplifier (PA) efficiency under the constraint of conjugate output matching. The study shows that in intrinsically low-efficiency operating regimes such as class-A, enforcing conjugate output matching leads to a factor-of-two reduction in efficiency with respect to an equivalent unmatched design, in agreement with the literature. However, when the amplifier is operated in class-AB and beyond, the efficiency penalty is reduced. Consequently, by appropriately adjusting the drive level and the PA bias point, it is possible to realize an output-matched PA with efficiencies comparable to those of unmatched designs. In addition to the analytical treatment, a practical topology and a design methodology for achieving the required output matching are presented. The findings are validated through transistor-level simulations of both bipolar and MOS RF amplifier designs.</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record></records></xml>