publication . Conference object . 2008

Amplificador de Potencia de Alto Rendimiento para Transmisores EER

Ortega González, Francisco Javier; Gimeno Martín, Alejandro; Pardo Martin, José Manuel; Benavente Peces, César;
Open Access Spanish; Castilian
  • Published: 01 Sep 2008
  • Publisher: E.U.I.T. Telecomunicación (UPM)
  • Country: Spain
Abstract
Se presenta un amplificador de potencia de alto rendimiento específicamente diseñado para aplicaciones EER (Envelope Elimination Restoration) en transmisores de HF. El amplificador se compone de dos subsistemas: Un amplificador clase-E de banda ancha para HF (B = 40%, POUT = 50W @ 7.5 MHz, ηOV > 90%) excitado por un driver también de banda ancha que amplifica la componente de fase de la señal y un amplificador de envolvente derivado de un amplificador clase-D de audio (o clase-S) que presenta un rendimiento total mejor que el 90% para la mayor parte de su margen de salida y un nivel de intermodulación IMD de -30 dBc (prueba de dos tonos). El amplificador complet...
Subjects
free text keywords: Telecomunicaciones, Electrónica
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Conference object . 2008

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