Title:
VARIABLE GAIN AMPLIFIER AND PHASE SHIFTER
Document Type and Number:
WIPO Patent Application WO/2024/095302
Kind Code:
A1
Abstract:
The present invention provides a variable gain amplifier comprising a control unit that obtains set gain information related to a gain setting and, on the basis of the set gain information, outputs a current to a first reference current transistor and a second reference current transistor so that the sum of the current value to the first reference current transistor and the current value to the second reference current transistor is constant, and outputs to a first variable impedance circuit and a second variable impedance circuit a voltage obtained by multiplying by a coefficient the absolute value of the difference between the current value to the first variable impedance circuit and the current value to the second variable impedance circuit, wherein, on the basis of the input of a normal-phase signal to a first input terminal and the input of an inverted-phase signal to a second input terminal, the normal-phase signal amplified according to the set gain information is output from the first output terminal, and the inverted-phase signal amplified according to the set gain information is output from the second output terminal.
Inventors:
HIRAI AKIHITO (JP)
TSUKUI YUKI (JP)
TSUKUI YUKI (JP)
Application Number:
PCT/JP2022/040574
Publication Date:
May 10, 2024
Filing Date:
October 31, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03G3/10; H03F3/45
Foreign References:
| JP2002158552A | 2002-05-31 | |||
| JP2010011380A | 2010-01-14 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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