GB2425418B - Amplifier circuit and rf transmitter incorporating the circuit - Google Patents

Amplifier circuit and rf transmitter incorporating the circuit

Info

Publication number
GB2425418B
GB2425418B GB0508049A GB0508049A GB2425418B GB 2425418 B GB2425418 B GB 2425418B GB 0508049 A GB0508049 A GB 0508049A GB 0508049 A GB0508049 A GB 0508049A GB 2425418 B GB2425418 B GB 2425418B
Authority
GB
United Kingdom
Prior art keywords
circuit
transmitter incorporating
amplifier
amplifier circuit
incorporating
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
GB0508049A
Other versions
GB2425418A (en
GB0508049D0 (en
Inventor
Haim Friedlander
Gadi Shirazi
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB0508049A priority Critical patent/GB2425418B/en
Publication of GB0508049D0 publication Critical patent/GB0508049D0/en
Priority to PCT/US2006/014395 priority patent/WO2006115879A2/en
Publication of GB2425418A publication Critical patent/GB2425418A/en
Application granted granted Critical
Publication of GB2425418B publication Critical patent/GB2425418B/en
Expired - Fee Related 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
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • 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
    • H03F1/0211—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 supply voltage or current
    • H03F1/0216—Continuous control
    • H03F1/0233—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply
    • H03F1/0238—Continuous control by using a signal derived from the output signal, e.g. bootstrapping the voltage supply using supply converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/504—Indexing scheme relating to amplifiers the supply voltage or current being continuously controlled by a controlling signal, e.g. the controlling signal of a transistor implemented as variable resistor in a supply path for, an IC-block showed amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
GB0508049A 2005-04-22 2005-04-22 Amplifier circuit and rf transmitter incorporating the circuit Expired - Fee Related GB2425418B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0508049A GB2425418B (en) 2005-04-22 2005-04-22 Amplifier circuit and rf transmitter incorporating the circuit
PCT/US2006/014395 WO2006115879A2 (en) 2005-04-22 2006-04-18 Amplifier circuit and rf transmitter incorporating the circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0508049A GB2425418B (en) 2005-04-22 2005-04-22 Amplifier circuit and rf transmitter incorporating the circuit

Publications (3)

Publication Number Publication Date
GB0508049D0 GB0508049D0 (en) 2005-05-25
GB2425418A GB2425418A (en) 2006-10-25
GB2425418B true GB2425418B (en) 2007-09-19

Family

ID=34631033

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0508049A Expired - Fee Related GB2425418B (en) 2005-04-22 2005-04-22 Amplifier circuit and rf transmitter incorporating the circuit

Country Status (2)

Country Link
GB (1) GB2425418B (en)
WO (1) WO2006115879A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015007696B3 (en) * 2015-06-18 2016-12-15 Iie Gmbh & Co. Kg Voltage source for modulated DC voltages
KR20180081317A (en) * 2017-01-06 2018-07-16 삼성전자주식회사 Power amplifier device and terminal or base station including the power amplifier device
CN112865730A (en) * 2019-11-27 2021-05-28 瑞昱半导体股份有限公司 Class D amplifier circuit and audio amplification method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996524A (en) * 1975-11-05 1976-12-07 Rca Corporation Linear amplifier utilizing adaptive biasing
US20020060608A1 (en) * 1999-03-30 2002-05-23 Chabas Jean A. Electronic apparatus comprising a power amplifier
US6566944B1 (en) * 2002-02-21 2003-05-20 Ericsson Inc. Current modulator with dynamic amplifier impedance compensation
US20040113695A1 (en) * 2000-11-24 2004-06-17 Harris Mark V. Amplifier circuit
GB2398648A (en) * 2003-02-19 2004-08-25 Nujira Ltd Amplifier power supply whose voltage tracks a signal envelope

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6081161A (en) * 1998-05-18 2000-06-27 Omnipoint Corporation Amplifier with dynamatically adaptable supply voltage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996524A (en) * 1975-11-05 1976-12-07 Rca Corporation Linear amplifier utilizing adaptive biasing
US20020060608A1 (en) * 1999-03-30 2002-05-23 Chabas Jean A. Electronic apparatus comprising a power amplifier
US20040113695A1 (en) * 2000-11-24 2004-06-17 Harris Mark V. Amplifier circuit
US6566944B1 (en) * 2002-02-21 2003-05-20 Ericsson Inc. Current modulator with dynamic amplifier impedance compensation
GB2398648A (en) * 2003-02-19 2004-08-25 Nujira Ltd Amplifier power supply whose voltage tracks a signal envelope

Also Published As

Publication number Publication date
GB2425418A (en) 2006-10-25
WO2006115879A2 (en) 2006-11-02
WO2006115879A3 (en) 2006-12-14
GB0508049D0 (en) 2005-05-25

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20120419 AND 20120425

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20220422