Power amplification device and transmitter
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United States of America Patent
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Jan 19, 2016
Grant Date -
Aug 27, 2015
app pub date -
Feb 19, 2015
filing date -
Feb 26, 2014
priority date (Note) -
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Abstract
A power amplification device includes: a first power-amplifier array including a plurality of first switching elements that constitute a class-D power amplifier for a higher bits; a second power-amplifier array including a plurality of second switching elements that constitute a class-D power amplifier for a lower bits; and a capacitor array including a plurality of capacitance elements. The second switching elements have a larger on-resistance than the first switching elements. The first power-amplifier array is arranged between the second power-amplifier array and the capacitor array.
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