High-Efficiency Envelope-Tracking W-CDMA Base-Station Amplifier Using GaN HFETs

Abstract

A high-efficiency wideband code-division multiple-access (W-CDMA) base-station amplifier is presented using high-performance GaN heterostructure field-effect transistors to achieve high gain and efficiency with good linearity. For high efficiency, class J/E operation was employed, which can attain up to 80% efficiency over a wide range of input powers and… (More)

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