Title:
POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2021/059381
Kind Code:
A1
Abstract:
In order to operate a power amplifier for synthesizing a plurality of amplifier circuits with high efficiency, the gate voltages of the field-effect transistors (FETs) of the plurality of amplifier circuits are adjusted according to an individual difference in saturated power between the amplifier circuits. Specifically, the output ratios of the amplifier circuits (AMP-4, 8) with low saturated power are reduced, whereas the output ratios of the amplifier circuits (AMP-2, 6) with high saturated power are increased. Thus, a device is operated with high efficiency.
Inventors:
GOTO YUSABURO (JP)
Application Number:
PCT/JP2019/037511
Publication Date:
April 01, 2021
Filing Date:
September 25, 2019
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H03F3/68; H03F1/02; H03F3/24
Foreign References:
| JPS62158915U | 1987-10-08 | |||
| JPH04262608A | 1992-09-18 | |||
| JP2011199357A | 2011-10-06 | |||
| JP2012138814A | 2012-07-19 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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