Design of wide-bandwidth envelope-tracking power amplifiers for OFDM applications

By Feipeng Wang, A. Yang, D. Kimball, Lawrence E. Larson, Peter M. Asbeck. IEEE transactions on microwave theory and techniques, 2005

332 citations recorded by the source corpus.

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A Post-Matching Doherty Power Amplifier Employing Low-Order Impedance Inverters for Broadband Applications (2015, background): “However, simply extending the bandwidths of these two networks can not achieve the goal.”
High-Efficiency Envelope-Tracking W-CDMA Base-Station Amplifier Using GaN HFETs (2006, background): “In Section III, the measured performance of the overall ET power amplifier is illustrated including an instantaneous measurement of the RF stage efficiency, which demonstrates the essential characteristics of the ET amplifier-high-efficiency operation of the RF amplifier over a wide output power…”
An Improved Power-Added Efficiency 19-dBm Hybrid Envelope Elimination and Restoration Power Amplifier for 802.11g WLAN Applications (2006, methodology): “When the supply voltage tracks the instantaneous envelope modulation signal, it is WBET [9], [15]–[17]; when the supply voltage tracks the long-term average of the input envelope power, it is called average ET (AET) [18], [19]; when the supply voltage switches to different step levels according to…”
The Doherty Power Amplifier: Review of Recent Solutions and Trends (2015, background): “A more viable solution is the envelope tracking [1], [7], where a linear PA, driven with the amplitude modulated input signal, is adopted and the drain bias voltage tracks the envelope”