GB2356307B - A low noise input matching method for R.F amplifiers - Google Patents

A low noise input matching method for R.F amplifiers

Info

Publication number
GB2356307B
GB2356307B GB9926726A GB9926726A GB2356307B GB 2356307 B GB2356307 B GB 2356307B GB 9926726 A GB9926726 A GB 9926726A GB 9926726 A GB9926726 A GB 9926726A GB 2356307 B GB2356307 B GB 2356307B
Authority
GB
United Kingdom
Prior art keywords
amplifiers
low noise
matching method
input matching
noise input
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
GB9926726A
Other versions
GB2356307A8 (en
GB2356307A (en
GB9926726D0 (en
Inventor
David A Moore
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 GB9926726A priority Critical patent/GB2356307B/en
Publication of GB9926726D0 publication Critical patent/GB9926726D0/en
Publication of GB2356307A publication Critical patent/GB2356307A/en
Publication of GB2356307A8 publication Critical patent/GB2356307A8/en
Application granted granted Critical
Publication of GB2356307B publication Critical patent/GB2356307B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
    • H03F3/45085—Long tailed pairs
    • H03F3/45089—Non-folded cascode 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/22—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively
    • 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
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • 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
    • H03F2203/45702—Indexing scheme relating to differential amplifiers the LC comprising two resistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
GB9926726A 1999-11-11 1999-11-11 A low noise input matching method for R.F amplifiers Expired - Fee Related GB2356307B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9926726A GB2356307B (en) 1999-11-11 1999-11-11 A low noise input matching method for R.F amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9926726A GB2356307B (en) 1999-11-11 1999-11-11 A low noise input matching method for R.F amplifiers

Publications (4)

Publication Number Publication Date
GB9926726D0 GB9926726D0 (en) 2000-01-12
GB2356307A GB2356307A (en) 2001-05-16
GB2356307A8 GB2356307A8 (en) 2001-05-30
GB2356307B true GB2356307B (en) 2002-04-10

Family

ID=10864366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9926726A Expired - Fee Related GB2356307B (en) 1999-11-11 1999-11-11 A low noise input matching method for R.F amplifiers

Country Status (1)

Country Link
GB (1) GB2356307B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7949322B2 (en) * 2007-03-09 2011-05-24 Qualcomm, Incorporated Frequency selective amplifier with wide-band impedance and noise matching

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035081A1 (en) * 1998-12-09 2000-06-15 Ericsson Inc. Low noise resistively matched amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000035081A1 (en) * 1998-12-09 2000-06-15 Ericsson Inc. Low noise resistively matched amplifier
US6100758A (en) * 1998-12-09 2000-08-08 Ericsson Inc. Low noise resistively matched amplifier

Also Published As

Publication number Publication date
GB2356307A8 (en) 2001-05-30
GB2356307A (en) 2001-05-16
GB9926726D0 (en) 2000-01-12

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Legal Events

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

Effective date: 20031111