POWER AMPLIFICATION APPARATUS AND CONTROL METHOD OF POWER AMPLIFICATION APPARATUS
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
Feb 14, 2014
filing date -
Feb 14, 2014
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Abstract
According to some embodiments, a power amplification apparatus has a Doherty amplifier, a voltage adjuster, and a central processor. The Doherty amplifier includes a carrier amplifier and a peak amplifier. Each of the carrier amplifier and the peak amplifier amplify an input signal. The Doherty amplifier outputs an output signal by combining the amplified signals. The voltage adjuster supplies a control voltage to each of the carrier amplifier and the peak amplifier. The central processor includes a table storing control voltage information of each of the carrier amplifier and the peak amplifier which are included in the Doherty amplifier. The control voltage information is determined in accordance with operations in an average output power of the Doherty amplifier. The central processor controls the voltage adjuster to supply a control voltage, which corresponds to the control voltage information stored in the table, to each of the carrier amplifier and the peak amplifier.
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