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Broadband envelope tracking high frequency power amplifier.
Broadband envelope tracking high frequency power amplifier.
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机译:宽带包络跟踪高频功率放大器。
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摘要
A radio-frequency power amplifier with envelope tracking, having a power RF amplifying device for amplifying a RF signal and a switching DC/DC converter for providing the power RF amplifying device with a DC power supply at a voltage level (VSUPP) proportional to an envelope of the RF signal, wherein the switching DC/DC converter has a reversed buck topology. Advantageously the switching device is a N-type GaN Field Effect Transistor having its drain connected to the ground.
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