High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique

Vasic, Miroslav and García Suárez, Oscar and Oliver Ramírez, Jesús Angel and Alou Cervera, Pedro and Díaz López, Daniel and Cobos Márquez, José Antonio and Gimeno Martín, Alejandro and Pardo Martin, José Manuel and Benavente Peces, César and Ortega González, Francisco Javier (2010). High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique. In: "2nd IEEE Energy Conversion Congress and Exposition (ECCE 2010)", 12/09/2010 - 16/09/2010, Atlanta, Georgia, EEUU. ISBN 978-1-4244-5286-6.

Description

Title: High Efficiency Power Amplifier Based on Envelope Elimination and Restoration Technique
Author/s:
  • Vasic, Miroslav
  • García Suárez, Oscar
  • Oliver Ramírez, Jesús Angel
  • Alou Cervera, Pedro
  • Díaz López, Daniel
  • Cobos Márquez, José Antonio
  • Gimeno Martín, Alejandro
  • Pardo Martin, José Manuel
  • Benavente Peces, César
  • Ortega González, Francisco Javier
Item Type: Presentation at Congress or Conference (Article)
Event Title: 2nd IEEE Energy Conversion Congress and Exposition (ECCE 2010)
Event Dates: 12/09/2010 - 16/09/2010
Event Location: Atlanta, Georgia, EEUU
Title of Book: Proceedings of the 2nd IEEE Energy Conversion Congress and Exposition (ECCE 2010)
Date: November 2010
ISBN: 978-1-4244-5286-6
Subjects:
Faculty: E.U.I.T. Telecomunicación (UPM)
Department: Ingeniería de Circuitos y Sistemas [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Due to complex envelope and phase modulation employed in modern transmitters it is necessary to use power amplifiers that have high linearity. Linear power amplifiers (classes A, B and AB) are commonly used, but they suffer from low efficiency especially if the transmitted signal has high peak to average power ratio (PAPR). Kahn's technique based on envelope elimination and restoration (EER) is based on idea that high efficiency power supply (envelope amplifier) could be used to modulate the envelope of high efficient non linear power amplifiers (classes D or E). This paper presents solutions for power amplifier that performs envelope modulation and class E amplifier that is used as a non linear amplifier. The envelope amplifier is implemented as a multilevel converter in series with linear regulator and can provide up to 100 W of instantaneous power and reproduce 2 MHz sine wave. The implemented Class E amplifier can operate at 120 MHz with efficiency near to 85%. The envelope amplifier and class E amplifier have been integrated and efficiency and linearity of the implemented transmitter has been measured and presented

More information

Item ID: 7900
DC Identifier: http://oa.upm.es/7900/
OAI Identifier: oai:oa.upm.es:7900
Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5617763&tag=1
Deposited by: Memoria Investigacion
Deposited on: 28 Jul 2011 08:22
Last Modified: 20 Apr 2016 16:51
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