GB2436651B - Variable gain low noise amplifier - Google Patents

Variable gain low noise amplifier

Info

Publication number
GB2436651B
GB2436651B GB0606421A GB0606421A GB2436651B GB 2436651 B GB2436651 B GB 2436651B GB 0606421 A GB0606421 A GB 0606421A GB 0606421 A GB0606421 A GB 0606421A GB 2436651 B GB2436651 B GB 2436651B
Authority
GB
United Kingdom
Prior art keywords
low noise
noise amplifier
variable gain
gain low
amplifier
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.)
Expired - Fee Related
Application number
GB0606421A
Other versions
GB0606421D0 (en
GB2436651A (en
Inventor
David Lomas
Stephan Ahles
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to GB0606421A priority Critical patent/GB2436651B/en
Publication of GB0606421D0 publication Critical patent/GB0606421D0/en
Publication of GB2436651A publication Critical patent/GB2436651A/en
Application granted granted Critical
Publication of GB2436651B publication Critical patent/GB2436651B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
    • 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
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • 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
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • H03F3/45183—Long tailed pairs
    • H03F3/45188—Non-folded cascode stages
    • 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
    • H03G1/0023—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 in emitter-coupled or cascode amplifiers
    • 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
    • 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
    • H03G1/0088—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using discontinuously variable devices, e.g. switch-operated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45302—Indexing scheme relating to differential amplifiers the common gate stage of a cascode dif amp being controlled
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45318—Indexing scheme relating to differential amplifiers the AAC comprising a cross coupling circuit, e.g. two extra transistors cross coupled
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45386—Indexing scheme relating to differential amplifiers the AAC comprising one or more coils in the source circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45466—Indexing scheme relating to differential amplifiers the CSC being controlled, e.g. by a signal derived from a non specified place in the dif amp circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45471—Indexing scheme relating to differential amplifiers the CSC comprising one or more extra current sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
GB0606421A 2006-03-30 2006-03-30 Variable gain low noise amplifier Expired - Fee Related GB2436651B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0606421A GB2436651B (en) 2006-03-30 2006-03-30 Variable gain low noise amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0606421A GB2436651B (en) 2006-03-30 2006-03-30 Variable gain low noise amplifier

Publications (3)

Publication Number Publication Date
GB0606421D0 GB0606421D0 (en) 2006-05-10
GB2436651A GB2436651A (en) 2007-10-03
GB2436651B true GB2436651B (en) 2008-02-20

Family

ID=36424921

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0606421A Expired - Fee Related GB2436651B (en) 2006-03-30 2006-03-30 Variable gain low noise amplifier

Country Status (1)

Country Link
GB (1) GB2436651B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112769406A (en) * 2019-11-06 2021-05-07 瑞昱半导体股份有限公司 Low noise amplifier circuit with multiple amplification gains
TWI788598B (en) * 2019-10-31 2023-01-01 瑞昱半導體股份有限公司 Low noise amplifier circuit having multiple gains

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0807149D0 (en) 2008-04-18 2008-05-21 Elonics Ltd Low noise amplifier
JP6052932B2 (en) 2013-05-09 2016-12-27 日本電信電話株式会社 Optical modulator driver circuit and optical transmitter
IT201600110367A1 (en) 2016-11-03 2018-05-03 St Microelectronics Srl PROCEDURE FOR CHECKING AMPLIFIERS, CIRCUIT AND CORRESPONDING DEVICE

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0938188A2 (en) * 1998-02-20 1999-08-25 Nec Corporation Variable gain amplifier circuit
WO2000074233A1 (en) * 1999-05-26 2000-12-07 Broadcom Corporation System and method for linearizing a cmos differential pair

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0938188A2 (en) * 1998-02-20 1999-08-25 Nec Corporation Variable gain amplifier circuit
WO2000074233A1 (en) * 1999-05-26 2000-12-07 Broadcom Corporation System and method for linearizing a cmos differential pair

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI788598B (en) * 2019-10-31 2023-01-01 瑞昱半導體股份有限公司 Low noise amplifier circuit having multiple gains
CN112769406A (en) * 2019-11-06 2021-05-07 瑞昱半导体股份有限公司 Low noise amplifier circuit with multiple amplification gains

Also Published As

Publication number Publication date
GB0606421D0 (en) 2006-05-10
GB2436651A (en) 2007-10-03

Similar Documents

Publication Publication Date Title
GB0407663D0 (en) Variable gain amplifier
GB2455824B (en) Gain control based on noise level
GB2432735B (en) RF variable gain amplifier
GB2443930B (en) Amplifier
GB0505060D0 (en) Gain controlled impedance
GB2423875B (en) Variable gain wideband amplifier
GB2464770B (en) Variable gain amplifier
HK1110471A1 (en) Active noise reduction microphone placing
SG137676A1 (en) Variable gain low noise amplifier
GB2436952B (en) Low noise amplifier and low noise amplifying method
HK1143666A1 (en) A distributed low noise amplifier
GB0816936D0 (en) Variable gain amplifier having wide gain variation and wide bandwidth
GB2436651B (en) Variable gain low noise amplifier
FI20055292A (en) Low noise amplifier bypass arrangement
GB2466301B (en) Low distortion amplifier
EP2058944A4 (en) Transconductance amplifier
EP2086108A4 (en) Transconductance amplifier
TWI349428B (en) Class ab amplifier
TWI341644B (en) Different amplifier
TWI346448B (en) Wideband ultra low noise amplifier
GB2434932B (en) Amplifier
GB2424137B (en) Amplifier
GB2426134B (en) Amplifiers
DE602004012255D1 (en) Low noise amplifier
TWI347743B (en) High linearity low noise variable gain amplifier with continuous gain control

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20120330