GB2386775B - A bias circuit for a bipolar transistor - Google Patents

A bias circuit for a bipolar transistor

Info

Publication number
GB2386775B
GB2386775B GB0304053A GB0304053A GB2386775B GB 2386775 B GB2386775 B GB 2386775B GB 0304053 A GB0304053 A GB 0304053A GB 0304053 A GB0304053 A GB 0304053A GB 2386775 B GB2386775 B GB 2386775B
Authority
GB
United Kingdom
Prior art keywords
bipolar transistor
bias circuit
bias
circuit
bipolar
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
GB0304053A
Other versions
GB0304053D0 (en
GB2386775A (en
Inventor
John David Birkbeck
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research 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
Priority claimed from GB0206571A external-priority patent/GB0206571D0/en
Priority claimed from GB0218920A external-priority patent/GB0218920D0/en
Application filed by Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to US10/508,038 priority Critical patent/US7288992B2/en
Priority to AU2003216835A priority patent/AU2003216835A1/en
Priority to PCT/GB2003/001167 priority patent/WO2003081771A1/en
Priority to AU2003217033A priority patent/AU2003217033A1/en
Priority to US10/508,120 priority patent/US7372332B2/en
Priority to PCT/GB2003/001309 priority patent/WO2003081772A1/en
Priority to GB0306405A priority patent/GB2386776B/en
Publication of GB0304053D0 publication Critical patent/GB0304053D0/en
Publication of GB2386775A publication Critical patent/GB2386775A/en
Publication of GB2386775B publication Critical patent/GB2386775B/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/36—Amplitude modulation by means of semiconductor device having at least three electrodes
    • 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
    • H03F1/0266—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 by using a signal derived from the input signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB0304053A 2002-03-20 2003-02-24 A bias circuit for a bipolar transistor Expired - Fee Related GB2386775B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/GB2003/001167 WO2003081771A1 (en) 2002-03-20 2003-03-18 A bias circuit for a bipolar transistor
AU2003216835A AU2003216835A1 (en) 2002-03-20 2003-03-18 A bias circuit for a bipolar transistor
US10/508,038 US7288992B2 (en) 2002-03-20 2003-03-18 Bias circuit for a bipolar transistor
AU2003217033A AU2003217033A1 (en) 2002-03-20 2003-03-20 Optimising power consumption in amplifiers
US10/508,120 US7372332B2 (en) 2002-03-20 2003-03-20 Optimizing power consumption in amplifiers
PCT/GB2003/001309 WO2003081772A1 (en) 2002-03-20 2003-03-20 Optimising power consumption in amplifiers
GB0306405A GB2386776B (en) 2002-03-20 2003-03-20 Optimising power consumption in amplifiers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0206571A GB0206571D0 (en) 2002-03-20 2002-03-20 A configurable HBT/Bipolar bias circuit
GB0218920A GB0218920D0 (en) 2002-08-15 2002-08-15 Power amplifier

Publications (3)

Publication Number Publication Date
GB0304053D0 GB0304053D0 (en) 2003-03-26
GB2386775A GB2386775A (en) 2003-09-24
GB2386775B true GB2386775B (en) 2004-09-29

Family

ID=26247012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0304053A Expired - Fee Related GB2386775B (en) 2002-03-20 2003-02-24 A bias circuit for a bipolar transistor

Country Status (1)

Country Link
GB (1) GB2386775B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2406728B (en) 2003-10-01 2007-06-13 Zarlink Semiconductor Ltd An integrated circuit device
EP1528666A1 (en) * 2003-11-03 2005-05-04 TriQuint Semiconductor GmbH Power amplifier circuit configuration and integrated circuit
GB2408401B (en) 2003-11-24 2006-05-03 Zarlink Semiconductor Ltd A network
GB2408400B (en) 2003-11-24 2006-05-03 Zarlink Semiconductor Ltd A circuit arrangement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436595A (en) * 1994-08-01 1995-07-25 Hewlett-Packard Company Low voltage bipolar amplifier
EP0942524A2 (en) * 1998-03-13 1999-09-15 Nokia Mobile Phones Ltd. Radio frequency amplifiers
US6023196A (en) * 1998-08-03 2000-02-08 Lucent Technologies Inc. Bias circuit for transconductance amplifier
WO2001067594A1 (en) * 2000-03-06 2001-09-13 Infineon Technologies Ag Circuit arrangement for adjusting the operating point of a high-frequency transistor and an amplifier circuit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436595A (en) * 1994-08-01 1995-07-25 Hewlett-Packard Company Low voltage bipolar amplifier
EP0942524A2 (en) * 1998-03-13 1999-09-15 Nokia Mobile Phones Ltd. Radio frequency amplifiers
US6023196A (en) * 1998-08-03 2000-02-08 Lucent Technologies Inc. Bias circuit for transconductance amplifier
WO2001067594A1 (en) * 2000-03-06 2001-09-13 Infineon Technologies Ag Circuit arrangement for adjusting the operating point of a high-frequency transistor and an amplifier circuit
US20030038679A1 (en) * 2000-03-06 2003-02-27 Josef-Paul Schaffer Circuit configuration for setting the operating point of a radiofrequency transistor and amplifier circuit

Also Published As

Publication number Publication date
GB0304053D0 (en) 2003-03-26
GB2386775A (en) 2003-09-24

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Legal Events

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

Effective date: 20110224