GB2522700B - Amplifier - Google Patents

Amplifier

Info

Publication number
GB2522700B
GB2522700B GB1401850.1A GB201401850A GB2522700B GB 2522700 B GB2522700 B GB 2522700B GB 201401850 A GB201401850 A GB 201401850A GB 2522700 B GB2522700 B GB 2522700B
Authority
GB
United Kingdom
Prior art keywords
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.)
Active
Application number
GB1401850.1A
Other versions
GB2522700A (en
GB201401850D0 (en
Inventor
Julian Whiffen
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.)
Thales Holdings UK PLC
Original Assignee
Thales Holdings UK PLC
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 Thales Holdings UK PLC filed Critical Thales Holdings UK PLC
Priority to GB1401850.1A priority Critical patent/GB2522700B/en
Publication of GB201401850D0 publication Critical patent/GB201401850D0/en
Publication of GB2522700A publication Critical patent/GB2522700A/en
Application granted granted Critical
Publication of GB2522700B publication Critical patent/GB2522700B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/336—A I/Q, i.e. phase quadrature, modulator or demodulator being used in an amplifying circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/375—Circuitry to compensate the offset being present in an amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/57—Separate feedback of real and complex signals being present
    • 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
    • H03F2203/45212—Indexing scheme relating to differential amplifiers the differential amplifier being designed to have a reduced offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB1401850.1A 2014-02-04 2014-02-04 Amplifier Active GB2522700B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1401850.1A GB2522700B (en) 2014-02-04 2014-02-04 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1401850.1A GB2522700B (en) 2014-02-04 2014-02-04 Amplifier

Publications (3)

Publication Number Publication Date
GB201401850D0 GB201401850D0 (en) 2014-03-19
GB2522700A GB2522700A (en) 2015-08-05
GB2522700B true GB2522700B (en) 2016-04-20

Family

ID=50344329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1401850.1A Active GB2522700B (en) 2014-02-04 2014-02-04 Amplifier

Country Status (1)

Country Link
GB (1) GB2522700B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3249821B1 (en) 2016-05-27 2018-07-18 Damm Cellular Systems A/S Transmitter and method for a multicarrier system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080287077A1 (en) * 2007-05-15 2008-11-20 Sige Semiconductor Inc. Method and apparatus for cartesian error feedback
US20080297247A1 (en) * 2007-05-30 2008-12-04 Sige Semiconductor Inc. Method and apparatus for distortion correction of RF amplifiers
US20080298501A1 (en) * 2007-05-30 2008-12-04 Sige Semiconductor Inc. Method and apparatus for distortion correction of RF amplifiers
GB2466218A (en) * 2008-12-12 2010-06-16 Motorola Inc A Cartesian loop RF transmitter with adaptive envelope modulation of the amplifier power supply voltage
US20110227642A1 (en) * 2010-03-16 2011-09-22 Motorola, Inc. Parallel forward path cartesian feedback loop and loop filter with switchable order for cartesian feedback loops

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080287077A1 (en) * 2007-05-15 2008-11-20 Sige Semiconductor Inc. Method and apparatus for cartesian error feedback
US20080297247A1 (en) * 2007-05-30 2008-12-04 Sige Semiconductor Inc. Method and apparatus for distortion correction of RF amplifiers
US20080298501A1 (en) * 2007-05-30 2008-12-04 Sige Semiconductor Inc. Method and apparatus for distortion correction of RF amplifiers
GB2466218A (en) * 2008-12-12 2010-06-16 Motorola Inc A Cartesian loop RF transmitter with adaptive envelope modulation of the amplifier power supply voltage
US20110227642A1 (en) * 2010-03-16 2011-09-22 Motorola, Inc. Parallel forward path cartesian feedback loop and loop filter with switchable order for cartesian feedback loops

Also Published As

Publication number Publication date
GB2522700A (en) 2015-08-05
GB201401850D0 (en) 2014-03-19

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