Title:
POWER AMPLIFICATION DEVICE AND METHOD OF CONTROLLING POWER AMPLIFICATION DEVICE
Document Type and Number:
Japanese Patent JP2015126432
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a power amplification device that allows maintaining high power efficiency even when an input signal using a different modulation method is amplified, and to provide a method of controlling the power amplification device.SOLUTION: A power amplification device includes a Doherty amplifier, a voltage adjustment unit, and a central arithmetic processing unit. The Doherty amplifier amplifies an input signal by a main amplifier and a peak amplifier respectively, and outputs an output signal in which the respective signals after the amplification are synthesized. The voltage adjustment unit supplies a drain voltage and a gate voltage to both the main amplifier and the peak amplifier. The central arithmetic processing unit controls the voltage adjustment unit on the basis of the ratio of the saturation output power of the Doherty amplifier and the average output power of the Doherty amplifier, and causes the voltage adjustment unit to supply the drain voltage and the gate voltage.
Inventors:
ITAGAKI HIROMU
DAIHI TOSHIYA
DAIHI TOSHIYA
Application Number:
JP2013270261A
Publication Date:
July 06, 2015
Filing Date:
December 26, 2013
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H03F1/07; H03F3/24; H03F3/68
Attorney, Agent or Firm:
Shiga International Patent Office
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