Highly linear, highly efficient wideband RF power amplifier having wide video bandwidth capability
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United States of America Patent
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Nov 21, 2017
Issued Date -
N/A
app pub date -
Mar 16, 2016
filing date -
Mar 16, 2016
priority date (Note) -
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Abstract
A radio frequency power amplifier (RF PA) apparatus includes a first RF PA, a second RF PA, and a controller. The first RF PA is configured to deliver RF power to a load over a first range of RF power levels. The second RF PA is configured to deliver RF power to the load over a second range of RF power levels greater than the first range of RF power levels. The controller controls whether the first RF PA is delivering RF power to the load or the second RF PA is delivering RF power to the load, and is further configured to coordinate and control handoffs between the first and second RF PAs by varying magnitudes of input RF voltages applied to the RF input ports of the first and second RF PAs or by varying magnitudes of input bias voltages applied to the RF input ports of the first and second RF PAs.
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