EE200100190A - Radio frequency transmitters - Google Patents

Radio frequency transmitters

Info

Publication number
EE200100190A
EE200100190A EEP200100190A EEP200100190A EE200100190A EE 200100190 A EE200100190 A EE 200100190A EE P200100190 A EEP200100190 A EE P200100190A EE P200100190 A EEP200100190 A EE P200100190A EE 200100190 A EE200100190 A EE 200100190A
Authority
EE
Estonia
Prior art keywords
radio frequency
frequency transmitters
transmitters
radio
frequency
Prior art date
Application number
EEP200100190A
Other languages
Estonian (et)
Inventor
Owen Bristow Robert
Colin Wilson Alexander
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Publication of EE200100190A publication Critical patent/EE200100190A/en

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
    • H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A
    • 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
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/18—Indexing scheme relating to amplifiers the bias of the gate of a FET being controlled by a control signal
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/045—Circuits with power amplifiers with means for improving efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)
  • Amplifiers (AREA)
EEP200100190A 1998-10-30 1999-10-27 Radio frequency transmitters EE200100190A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9823821A GB2343312A (en) 1998-10-30 1998-10-30 GSM mobile telephone transmitter with amplifier used in an efficient non-linear mode during data transmission and in a linear mode during ramp-up or ramp-down
PCT/EP1999/008111 WO2000027038A2 (en) 1998-10-30 1999-10-27 Radio frequency transmitters

Publications (1)

Publication Number Publication Date
EE200100190A true EE200100190A (en) 2002-06-17

Family

ID=10841601

Family Applications (1)

Application Number Title Priority Date Filing Date
EEP200100190A EE200100190A (en) 1998-10-30 1999-10-27 Radio frequency transmitters

Country Status (7)

Country Link
EP (1) EP1125367A2 (en)
CN (1) CN1331864A (en)
AU (1) AU2536900A (en)
BR (1) BR9914912A (en)
EE (1) EE200100190A (en)
GB (1) GB2343312A (en)
WO (1) WO2000027038A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0107264D0 (en) * 2001-03-22 2001-05-16 Nokia Networks Oy Processing signals in a transmitter
JP4791271B2 (en) 2006-06-28 2011-10-12 富士通株式会社 Amplifier control device
JP7537667B2 (en) 2020-01-30 2024-08-21 国立研究開発法人宇宙航空研究開発機構 Amplification equipment, transmission and reception systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060294A (en) * 1990-07-05 1991-10-22 Motorola, Inc. Dual mode power amplifier for radiotelephone
US5281925A (en) * 1992-11-17 1994-01-25 Acrodyne Industries, Inc. RF amplifier providing reduced drive response rise times and fall times
US5420536A (en) * 1993-03-16 1995-05-30 Victoria University Of Technology Linearized power amplifier
US5638404A (en) * 1994-09-22 1997-06-10 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications Pre-compensated frequency modulation (PFM)

Also Published As

Publication number Publication date
BR9914912A (en) 2001-07-10
EP1125367A2 (en) 2001-08-22
GB2343312A (en) 2000-05-03
CN1331864A (en) 2002-01-16
WO2000027038A3 (en) 2000-08-10
AU2536900A (en) 2000-05-22
WO2000027038A2 (en) 2000-05-11
GB9823821D0 (en) 1998-12-23

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