Envelope amplifier based on a hybrid series converter with the slow-envelope technique
作者： P. M. Cheng , O. Garcia , M. Vasic , P. Alou , J.A. Oliver
DOI: 10.1109/ECCE.2012.6342420
关键词:
摘要: High frequency dc-dc switching converters are used as envelope amplifiers in RF transmitters. The converter should operate at very high to track an the MHz range supply power amplifier. One of circuits suitable for this application is a hybrid topology composed switched and linear regulator series that work together adjust output voltage with accuracy. This can take advantage reduced slew-rate technique where provides limited slew rate order avoid losses, while performs fine adjustment obtain exact replica envelope. combination control proposed paper. Envelopes different bandwidth will be considered optimize efficiency converter. calculations experiments have been done 2MHz 0–12V EER transmitter.
sci-hub.se 参考文章(8)
V. Yousefzadeh, E. Alarcon, D. Maksimovic, Band Separation and Efficiency Optimization in Linear-Assisted Switching Power Amplifiers power electronics specialists conference. pp. 1- 7 ,(2006) , 10.1109/PESC.2006.1712188
Leonard Kahn, Single-Sideband Transmission by Envelope Elimination and Restoration Proceedings of the IRE. ,vol. 40, pp. 803- 806 ,(1952) , 10.1109/JRPROC.1952.273844
A. Aggarwal, T.H. Meng, Minimizing the Peak-to-Average Power Ratio of OFDM Signals Using Convex Optimization IEEE Transactions on Signal Processing. ,vol. 54, pp. 3099- 3110 ,(2006) , 10.1109/TSP.2006.875390
M. Vasic, O. Garcia, J.A. Oliver, P. Alou, D. Diaz, J.A. Cobos, Multilevel Power Supply for High Efficiency RF Amplifiers applied power electronics conference. pp. 1233- 1238 ,(2009) , 10.1109/APEC.2009.4802821
Feipeng Wang, Donald F. Kimball, Jeremy D. Popp, Annie Hueiching Yang, Donald Y. Lie, Peter M. Asbeck, Lawrence E. Larson, An Improved Power-Added Efficiency 19-dBm Hybrid Envelope Elimination and Restoration Power Amplifier for 802.11g WLAN Applications IEEE Transactions on Microwave Theory and Techniques. ,vol. 54, pp. 4086- 4099 ,(2006) , 10.1109/TMTT.2006.885575
Gabriel Montoro, Pere L. Gilabert, Pedro Vizarreta, Eduard Bertran, Slew-rate limited envelopes for driving envelope tracking amplifiers radio and wireless symposium. pp. 17- 20 ,(2011) , 10.1109/PAWR.2011.5725386
PM Cheng, M Vasić, O Garcia, JA Oliver, P Alou, JA Cobos, None, Design of envelope amplifier based on interleaved multiphase buck converter with minimum time control for RF application energy conversion congress and exposition. pp. 1279- 1283 ,(2011) , 10.1109/ECCE.2011.6063924
F.H. Raab, Split-band modulator for Kahn-technique transmitters international microwave symposium. ,vol. 2, pp. 887- 890 ,(2004) , 10.1109/MWSYM.2004.1339113