Title:
DISTORTION COMPENSATION DEVICE AND POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2022/176139
Kind Code:
A1
Abstract:
A distortion compensation device (1) is configured so as to comprise: a weighting unit (11) that divides a to-be-amplified transmission signal into multiple transmission signals, and weights each of the transmission signals, after division, by using each among multiple weighting coefficients that, accompanying a change in amplitude in the to-be-amplified transmission signal, produce differing changes from one another; a distortion compensation unit (12) that uses each among multiple distortion compensation coefficients to subject each of the transmission signals, after weighting by the weighting unit (11), to a distortion compensation process; and a signal synthesizing unit (13) that synthesizes the multiple transmission signals after the distortion compensation process by the distortion compensation unit (12), and outputs, to an amplifier (2), the transmission signal after synthesis.
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Inventors:
YAMASHITA AO (JP)
SAKAKI HIROTO (JP)
ANDO NOBUHIKO (JP)
NAKAMIZO HIDEYUKI (JP)
SAKAKI HIROTO (JP)
ANDO NOBUHIKO (JP)
NAKAMIZO HIDEYUKI (JP)
Application Number:
PCT/JP2021/006239
Publication Date:
August 25, 2022
Filing Date:
February 19, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03F1/32; H04B1/04; H03F3/24
Domestic Patent References:
| WO2017085807A1 | 2017-05-26 |
Foreign References:
| JP2013542696A | 2013-11-21 | |||
| JP2017123539A | 2017-07-13 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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