DE2648080C3 - Breitbandverstärker mit veränderbarer Verstärkung - Google Patents

Breitbandverstärker mit veränderbarer Verstärkung

Info

Publication number
DE2648080C3
DE2648080C3 DE2648080A DE2648080A DE2648080C3 DE 2648080 C3 DE2648080 C3 DE 2648080C3 DE 2648080 A DE2648080 A DE 2648080A DE 2648080 A DE2648080 A DE 2648080A DE 2648080 C3 DE2648080 C3 DE 2648080C3
Authority
DE
Germany
Prior art keywords
transistor
current
base
collector
transistors
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
Application number
DE2648080A
Other languages
German (de)
English (en)
Other versions
DE2648080A1 (de
DE2648080B2 (de
Inventor
Dan M. San Jose Calif. Hunsinger (V.St.A.)
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE2648080A1 publication Critical patent/DE2648080A1/de
Publication of DE2648080B2 publication Critical patent/DE2648080B2/de
Application granted granted Critical
Publication of DE2648080C3 publication Critical patent/DE2648080C3/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)
DE2648080A 1975-12-05 1976-10-23 Breitbandverstärker mit veränderbarer Verstärkung Expired DE2648080C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/637,910 US4017804A (en) 1975-12-05 1975-12-05 Broad band variable gain amplifier

Publications (3)

Publication Number Publication Date
DE2648080A1 DE2648080A1 (de) 1977-06-08
DE2648080B2 DE2648080B2 (de) 1979-08-23
DE2648080C3 true DE2648080C3 (de) 1980-04-30

Family

ID=24557857

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2648080A Expired DE2648080C3 (de) 1975-12-05 1976-10-23 Breitbandverstärker mit veränderbarer Verstärkung

Country Status (3)

Country Link
US (1) US4017804A (enExample)
JP (1) JPS5269258A (enExample)
DE (1) DE2648080C3 (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329663A1 (de) * 1983-08-17 1985-03-07 Telefunken electronic GmbH, 7100 Heilbronn Mehrstufiges signaluebertragungssystem
JPH0626291B2 (ja) * 1985-03-15 1994-04-06 株式会社東芝 利得制御装置
DE3811947A1 (de) * 1988-04-11 1989-10-19 Telefunken Electronic Gmbh Steuerbare verstaerkerschaltung
FR2765750A1 (fr) * 1997-07-02 1999-01-08 Trt Lucent Technologies Dispositif de reception pour signaux hyperfrequence
US5999053A (en) * 1998-07-02 1999-12-07 Philips Electronics North America Corporation Current steering variable gain amplifier with linearizer
US6028478A (en) * 1998-07-13 2000-02-22 Philips Electronics North America Corporation Converter circuit and variable gain amplifier with temperature compensation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891937A (en) * 1972-12-21 1975-06-24 Philips Corp Circuit arrangement for electronic gain/control, in particular electronic volume control circuit

Also Published As

Publication number Publication date
DE2648080A1 (de) 1977-06-08
JPS575365B2 (enExample) 1982-01-30
US4017804A (en) 1977-04-12
DE2648080B2 (de) 1979-08-23
JPS5269258A (en) 1977-06-08

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee