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A power re-use technique for improved efficiency of outphasing microwave power amplifiers

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4 Author(s)
Langridge, R. ; Center for Wireless Commun., California Univ., San Diego, La Jolla, CA, USA ; Thornton, T. ; Asbeck, P.M. ; Larson, L.E.

An improved power re-use technique is introduced for application to outphased microwave power amplifiers. The technique allows a significant portion of the wasted out-of-phase components of the signal to be returned to the power supply, resulting in substantial improvements in overall power-amplifier efficiency. A peak re-use RF-to-DC efficiency of 63% was obtained at 1.96 GHz

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 8 )