GB9823821D0 - Radio frequency transmitters - Google Patents

Radio frequency transmitters

Info

Publication number
GB9823821D0
GB9823821D0 GBGB9823821.5A GB9823821A GB9823821D0 GB 9823821 D0 GB9823821 D0 GB 9823821D0 GB 9823821 A GB9823821 A GB 9823821A GB 9823821 D0 GB9823821 D0 GB 9823821D0
Authority
GB
United Kingdom
Prior art keywords
radio frequency
frequency transmitters
transmitters
radio
frequency
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.)
Withdrawn
Application number
GBGB9823821.5A
Other versions
GB2343312A (en
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to GB9823821A priority Critical patent/GB2343312A/en
Publication of GB9823821D0 publication Critical patent/GB9823821D0/en
Priority to PCT/EP1999/008111 priority patent/WO2000027038A2/en
Priority to EEP200100190A priority patent/EE200100190A/en
Priority to AU25369/00A priority patent/AU2536900A/en
Priority to BR9914912-5A priority patent/BR9914912A/en
Priority to EP99968328A priority patent/EP1125367A2/en
Priority to CN99812889A priority patent/CN1331864A/en
Publication of GB2343312A publication Critical patent/GB2343312A/en
Withdrawn legal-status Critical Current

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
GB9823821A 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 Withdrawn GB2343312A (en)

Priority Applications (7)

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
EEP200100190A EE200100190A (en) 1998-10-30 1999-10-27 Radio frequency transmitters
AU25369/00A AU2536900A (en) 1998-10-30 1999-10-27 Radio frequency transmitters
BR9914912-5A BR9914912A (en) 1998-10-30 1999-10-27 Method of controlling a radio frequency power amplifier in a digital communications device, and, radio frequency transmitter for a digital communications device
EP99968328A EP1125367A2 (en) 1998-10-30 1999-10-27 Radio frequency transmitters
CN99812889A CN1331864A (en) 1998-10-30 1999-10-27 Radio frequency transmitters

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
GB9823821D0 true GB9823821D0 (en) 1998-12-23
GB2343312A GB2343312A (en) 2000-05-03

Family

ID=10841601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9823821A Withdrawn 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

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
JP2021121054A (en) 2020-01-30 2021-08-19 国立研究開発法人宇宙航空研究開発機構 Amplification device and transmission/reception system

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
WO2000027038A3 (en) 2000-08-10
CN1331864A (en) 2002-01-16
AU2536900A (en) 2000-05-22
BR9914912A (en) 2001-07-10
EE200100190A (en) 2002-06-17
GB2343312A (en) 2000-05-03
WO2000027038A2 (en) 2000-05-11
EP1125367A2 (en) 2001-08-22

Similar Documents

Publication Publication Date Title
GB9821839D0 (en) Radio receiver
IL140014A0 (en) Multiple frequency band antenna
AU5676399A (en) Radio frequency identification system
IL181442A (en) Radio frequency receiver system
AU4181899A (en) Radio frequency receiving circuit
GB2292257A8 (en) Radio frequency antenna
EP1061662A4 (en) High-frequency radio circuit
IL141652A0 (en) Radio frequency tag system
GB2347292B (en) Multiple frequency band receiver
GB2338853B (en) Radio receiver
GB2318696B (en) Radio frequency transmitter
GB2354402B (en) Radio transmitter
GB9805148D0 (en) Radio receiver
GB2326529B (en) Radio frequency antenna
GB0028682D0 (en) Radio frequency source
GB9821088D0 (en) Radio transmitter
GB2329085B (en) RF transmitter
GB9823821D0 (en) Radio frequency transmitters
GB9915919D0 (en) Radio frequency amplifier
GB2345209B (en) A radio receiver
GB2341285B (en) Frequency synthesisers
GB2335772B (en) Radio selective-calling receiver
GB2337622B (en) Radio selective-calling receiver
ZA992949B (en) Radio frequency transmitters and receivers.
GB0025902D0 (en) Radio transmitters

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1028302

Country of ref document: HK