High Efficiency Power Amplifier for High Frequency Radio Transmitters

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 y Ortega González, Francisco Javier (2010). High Efficiency Power Amplifier for High Frequency Radio Transmitters. En: "25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010", 21/02/2010 - 25/02/2010, Palm Springs, California, USA. ISBN 978-1-4244-4782-4.

Descripción

Título: High Efficiency Power Amplifier for High Frequency Radio Transmitters
Autor/es:
  • 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
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010
Fechas del Evento: 21/02/2010 - 25/02/2010
Lugar del Evento: Palm Springs, California, USA
Título del Libro: Proceedings of the 25th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2010
Fecha: 2010
ISBN: 978-1-4244-4782-4
Materias:
Escuela: E.U.I.T. Telecomunicación (UPM) [antigua denominación]
Departamento: Ingeniería de Circuitos y Sistemas [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Modern transmitters usually have to amplify and transmit complex communication 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 employed as a solution for the power amplifier stage. These amplifiers have high linearity, but suffer from low efficiency when the transmitted signal has high 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 presents solutions for the power supply that acts as the envelope amplifier and class E amplifier that is used as a nonlinear amplifier. The envelope amplifier is implemented as a multilevel converter in series with a linear regulator and can provide up to 100 W of peak power and reproduce sine wave of 2 MHz, while the implemented class E amplifier operates at 120 MHz with an efficiency near to 90%. The envelope amplifier and class E amplifier have been integrated in order to implement the Kahn's technique transmitter and series of experiments have been conducted in order to characterize the implemented transmitter.

Más información

ID de Registro: 7363
Identificador DC: http://oa.upm.es/7363/
Identificador OAI: oai:oa.upm.es:7363
URL Oficial: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5433587
Depositado por: Memoria Investigacion
Depositado el: 13 Jul 2011 11:41
Ultima Modificación: 20 Abr 2016 16:30
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