Optimized Design of GaN Switching Capacitor Based Envelope Tracking Power Supply for Satellite Applications

Jin, Qian; Vasic, Miroslav; García Suárez, Oscar; Alou Cervera, Pedro; Oliver Ramírez, Jesús Angel y Cobos Márquez, José Antonio (2016). Optimized Design of GaN Switching Capacitor Based Envelope Tracking Power Supply for Satellite Applications. En: "Proceedings of Applied Power Electronics Conference (APEC 2016)", March 20 – 24, 2016, Long Beach, California. ISBN 978-1-4673-9550-2. pp. 2409-2414. https://doi.org/10.1109/APEC.2016.7468203.

Descripción

Título: Optimized Design of GaN Switching Capacitor Based Envelope Tracking Power Supply for Satellite Applications
Autor/es:
  • Jin, Qian
  • Vasic, Miroslav
  • García Suárez, Oscar
  • Alou Cervera, Pedro
  • Oliver Ramírez, Jesús Angel
  • Cobos Márquez, José Antonio
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Proceedings of Applied Power Electronics Conference (APEC 2016)
Fechas del Evento: March 20 – 24, 2016
Lugar del Evento: Long Beach, California
Título del Libro: IEEE Applied Power Electronics Conference and Exposition (APEC 2016)
Fecha: 2016
ISBN: 978-1-4673-9550-2
Materias:
Palabras Clave Informales: envelope tracking, switching capacitor, power amplifier, GaN device
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Grupo Investigación UPM: Centro de Electrónica Industrial
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In modern communication system, both the bandwidth and peak-to-average power ratio of the transmitted signal are increasing rapidly. As a result, the power amplifiers based on linear power amplifiers such as class A, B or AB suffer from very low efficiency. The most promising solutions are the Envelope Tracking (ET) and Envelope Elimination and Restoration (EER) techniques, which can greatly improve the efficiency by employing a dynamic power supply that tracks the envelope of the transmitted signal. This paper presents an implementation of the ET power supply based on a multilevel converter in series with a linear regulator for a satellite application. The multilevel converter consists of a switching capacitors based converter in order to have highly efficient and light solution because the weight of power supply, together with its efficiency, is of the outmost importance for the application. A prototype capable of following a 5MHz RF envelope signal with maximum output power of 40W is fabricated. The experimental results verify the effectiveness of the proposed solution with 96.15% efficiency for the multilevel converter and 75% for the ET power supply. Furthermore, an experimental comparison between Silicon and GaN transistors is conducted in order to verify the benefits of GaN transistors.

Más información

ID de Registro: 46160
Identificador DC: http://oa.upm.es/46160/
Identificador OAI: oai:oa.upm.es:46160
Identificador DOI: 10.1109/APEC.2016.7468203
URL Oficial: http://ieeexplore.ieee.org/document/7468203/?reload=true
Depositado por: Memoria Investigacion
Depositado el: 29 May 2017 15:30
Ultima Modificación: 01 Jun 2017 14:48
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