Comparison of Two Multilevel Architectures for Envelope Amplifier

Vasic, Miroslav; García Suárez, Oscar; Oliver Ramírez, Jesús Angel; Alou Cervera, Pedro; Díaz López, Daniel y Cobos Márquez, José Antonio (2009). Comparison of Two Multilevel Architectures for Envelope Amplifier. En: "35th Annual Conference of IEEE Industrial Electronics, 2009. IECON '09", 03/11/2009 - 05/11/2009, Oporto, Portugal. ISBN 978-1-4244-4650-6. https://doi.org/10.1109/IECON.2009.5414936.

Descripción

Título: Comparison of Two Multilevel Architectures for Envelope Amplifier
Autor/es:
  • Vasic, Miroslav
  • García Suárez, Oscar
  • Oliver Ramírez, Jesús Angel
  • Alou Cervera, Pedro
  • Díaz López, Daniel
  • Cobos Márquez, José Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 35th Annual Conference of IEEE Industrial Electronics, 2009. IECON '09
Fechas del Evento: 03/11/2009 - 05/11/2009
Lugar del Evento: Oporto, Portugal
Título del Libro: Proceedings of the 35th Annual Conference of IEEE Industrial Electronics, 2009. IECON '09
Fecha: 2009
ISBN: 978-1-4244-4650-6
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Automática, Ingeniería Electrónica e Informática Industrial [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Modern transmitters usually have to amplify and transmit signals with simultaneous envelope and phase modulation. Due to this property of the transmitted signal, linear power amplifiers (class A, B or AB) are usually used as a solution for the power amplifier stage. These amplifiers have high linearity, but suffer from low efficiency when the transmitted signal has low peak-to-average power ratio. The Kahn envelope elimination and restoration (EER) technique is used to enhance efficiency of RF transmitters, by combining highly efficient, nonlinear RF amplifier (class D or E) with a highly efficient envelope amplifier in order to obtain linear and highly efficient RF amplifier. This paper compares two solutions for the envelope amplifier based on a combination of multilevel converter and linear regulator. The solutions are compared regarding their efficiency, size and weight. Both solutions can reproduce any signal with maximal spectral component of 1 MHz and give instantaneous maximal power of 50 W. The efficiency measurements show that when the signals with low average value are transmitted, the implemented prototypes have up to 19% higher efficiency than linear regulator that is used as a conventional solution.

Más información

ID de Registro: 5532
Identificador DC: http://oa.upm.es/5532/
Identificador OAI: oai:oa.upm.es:5532
Identificador DOI: 10.1109/IECON.2009.5414936
URL Oficial: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5414936
Depositado por: Memoria Investigacion
Depositado el: 20 Dic 2010 12:51
Ultima Modificación: 20 Abr 2016 14:19
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