Title:
VARIABLE GAIN AMPLIFIER AND VECTOR-SUM PHASE SHIFTER
Document Type and Number:
WIPO Patent Application WO/2018/134918
Kind Code:
A1
Abstract:
This invention is configured so as to adjust the total gain of a variable gain amplifier by: controlling, according to either a first control pattern or a second control pattern, each of a plurality of main amplifiers each comprising a first source-grounded differential pair and a second source-grounded differential pair, the operation state of each of which can be switched between on and off; and, as regards a first sub-amplifier comprising a third source-grounded differential pair the operation state of which can be switched between on and off, controlling the operation state of the third source-grounded differential pair to be either on or off.
Inventors:
YAMAMOTO WATARU (JP)
TSUTSUMI KOJI (JP)
MARUYAMA TAKAYA (JP)
SHIMOZAWA MITSUHIRO (JP)
TSUTSUMI KOJI (JP)
MARUYAMA TAKAYA (JP)
SHIMOZAWA MITSUHIRO (JP)
Application Number:
PCT/JP2017/001572
Publication Date:
July 26, 2018
Filing Date:
January 18, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03G3/10
Domestic Patent References:
| WO2003084059A1 | 2003-10-09 |
Foreign References:
| JPH11177357A | 1999-07-02 | |||
| JP2001292051A | 2001-10-19 |
Other References:
WANG,HUA ET AL.: "A Wideband CMOS Linear Digital Phase Rotator", IEEE 2007 CUSTOM INTEGRATED CIRCUITS CONFERENCES, 16 September 2017 (2017-09-16), pages 671 - 674, XP031223681
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
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