Adaptive envelope shaping for low and medium power amplifiers with dynamic supply

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URI: http://hdl.handle.net/10902/12458
ISSN: 1531-1309
ISSN: 1558-1764
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Author
Gilabert Pinal, Pere Lluis; Montoro López, Gabriel; Ruiz Lavín, María de las NievesAutoridad Unican; García García, José ÁngelAutoridad Unican
Date
2016-07
Derechos
© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
IEEE Microwave and Wireless Components Letters, 2016, 26(7), 513-515
Publisher
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Envelope shaping
Linearization
Power amplifier
Abstract:
This letter presents an adaptive envelope shaping (AES) method to linearize low and medium power amplifiers (PAs) with dynamic supply. This straightforward linearization solution results very useful for small cell or handset transmitters, where reducing power consumption and computational complexity of the digital part is crucial. With the AES method, there is no need of an a priori characterization of the PA to shape the supply voltage signal targeting maximum linearity. Excellent linearization results are obtained when the PA presents good AM-PM linearity, otherwise, additional phase distortion linearization has to be included to meet the ACLR specifications.
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