High-Efficiency Envelope-Tracking W-CDMA Base-Station Amplifier Using GaN HFETs

By D. Kimball, Jinho Jeong, C. Hsia, P. Draxler, S. Lanfranco, Walter Nagy, K. Linthicum, L. Larson, Peter M. Asbeck. IEEE transactions on microwave theory and techniques, 2006

309 citations recorded by the source corpus.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/77d402d848f3563f1694a72963677b7cc596de3a

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Citations in the corpus

A High-Efficiency 100-W GaN Three-Way Doherty Amplifier for Base-Station Applications (2008, background): “A state-of-the-art envelope tracking amplifier is demonstrated in [ 2 ] offering a power-added efficiency (PAE) of 50.7% for a wideband code division multiple access (W-CDMA) signal, at an average output power of 37.2 W (in [2], the W-CDMA signal was clipped in order to reduce the crest factor to 7.”
ET Comes of Age: Envelope Tracking for Higher-Efficiency Power Amplifiers (2016, background): “Alternative approaches have been widely explored that combine both analog and digital (switching-mode) sections, with the digital parts corresponding to the dc and low-frequency components of the signal produced at very high efficiency, and the analog parts corresponding to the higher-frequency part”
A 90-W Peak Power GaN Outphasing Amplifier With Optimum Input Signal Conditioning (2009, background): “In view of this, outphasing amplifiers [9] are generally considered to be easier to pre-distort, while their RF bandwidth can be large compared to Doherty implementations, making them interesting candidates for future multiband multimode base-stationoperation.However,inspiteof theirpotential,practic”
A Simplified Broadband Design Methodology for Linearized High-Efficiency Continuous Class-F Power Amplifiers (2012, background): “These demands impose great difficulty on designing PAs to meet stringent bandwidth and efficiency specifications, while simultaneously conforming to spectral mask and in-band distortion requirements.”
Baseband Equivalent Volterra Series for Digital Predistortion of Dual-Band Power Amplifiers (2014, background): “Advanced PA design techniques, such as load (Doherty [1]–[4]) and drain-supply (envelope tracking [5]–[7]) modulations, have been applied to improve efficiency at the back-off region of single-band PAs.”