GB2605527B - Variable gain amplifier - Google Patents

Variable gain amplifier Download PDF

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Publication number
GB2605527B
GB2605527B GB2208526.0A GB202208526A GB2605527B GB 2605527 B GB2605527 B GB 2605527B GB 202208526 A GB202208526 A GB 202208526A GB 2605527 B GB2605527 B GB 2605527B
Authority
GB
United Kingdom
Prior art keywords
variable gain
gain amplifier
amplifier
variable
gain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
GB2208526.0A
Other versions
GB2605527A (en
GB202208526D0 (en
Inventor
Fujiwara Takanobu
Morino Yoshiaki
Hirai Akihito
Tsuru Masaomi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB202208526D0 publication Critical patent/GB202208526D0/en
Publication of GB2605527A publication Critical patent/GB2605527A/en
Application granted granted Critical
Publication of GB2605527B publication Critical patent/GB2605527B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • H03F3/45085—Long tailed pairs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
    • H03G1/0029—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier using FETs
GB2208526.0A 2020-02-10 2020-02-10 Variable gain amplifier Active GB2605527B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/005097 WO2021161373A1 (en) 2020-02-10 2020-02-10 Variable gain amplifier

Publications (3)

Publication Number Publication Date
GB202208526D0 GB202208526D0 (en) 2022-07-27
GB2605527A GB2605527A (en) 2022-10-05
GB2605527B true GB2605527B (en) 2023-04-26

Family

ID=77292802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2208526.0A Active GB2605527B (en) 2020-02-10 2020-02-10 Variable gain amplifier

Country Status (3)

Country Link
JP (1) JP7042992B2 (en)
GB (1) GB2605527B (en)
WO (1) WO2021161373A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818880A2 (en) * 1996-07-11 1998-01-14 Nokia Mobile Phones Ltd. Gain control circuit for a linear power amplifier
US6229374B1 (en) * 2000-03-23 2001-05-08 International Business Machines Corporation Variable gain amplifiers and methods having a logarithmic gain control function

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5999053A (en) 1998-07-02 1999-12-07 Philips Electronics North America Corporation Current steering variable gain amplifier with linearizer
US6172636B1 (en) 1999-07-13 2001-01-09 Analog Devices, Inc. Linearizing structures and methods for adjustable-gain folding amplifiers
US6646481B2 (en) 2001-09-28 2003-11-11 Winbond Electronics Corporation Current steering circuit for amplifier
EP2097985A4 (en) 2006-12-21 2010-12-22 Icera Canada ULC Current controlled biasing for current-steering based rf variable gain amplifiers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0818880A2 (en) * 1996-07-11 1998-01-14 Nokia Mobile Phones Ltd. Gain control circuit for a linear power amplifier
US6229374B1 (en) * 2000-03-23 2001-05-08 International Business Machines Corporation Variable gain amplifiers and methods having a logarithmic gain control function

Also Published As

Publication number Publication date
GB2605527A (en) 2022-10-05
JPWO2021161373A1 (en) 2021-08-19
JP7042992B2 (en) 2022-03-28
GB202208526D0 (en) 2022-07-27
WO2021161373A1 (en) 2021-08-19

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