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GB1075341A - Improvements in or relating to automatic gain control arrangements - Google Patents

Improvements in or relating to automatic gain control arrangements

Info

Publication number
GB1075341A
GB1075341A GB2102164A GB2102164A GB1075341A GB 1075341 A GB1075341 A GB 1075341A GB 2102164 A GB2102164 A GB 2102164A GB 2102164 A GB2102164 A GB 2102164A GB 1075341 A GB1075341 A GB 1075341A
Authority
GB
United Kingdom
Prior art keywords
stage
signal
attenuator
reference level
attenuation
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
GB2102164A
Inventor
Boleslaw Marian Sosin
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 to BE664231D priority Critical patent/BE664231A/xx
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB2102164A priority patent/GB1075341A/en
Priority to SE542265A priority patent/SE338075B/xx
Priority to DE19651466163 priority patent/DE1466163A1/en
Priority to CH690065A priority patent/CH451247A/en
Priority to NL6506417A priority patent/NL6506417A/xx
Publication of GB1075341A publication Critical patent/GB1075341A/en
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

1,075,341. Automatic gain control. MARCONI CO. Ltd. March 17, 1965 [May 21, 1964], No. 21021/64. Heading H3Q. In self-tuning radio equipment there is interposed in the amplifying channel a multi-stage attenuator 5, each stage of which can be switched to give either zero attenuation or twice the attenuation of the preceding stage. Signal is picked up by a pick-up device 7 at a subsequent stage, e.g. after amplifier 3, and compared with a predetermined reference level in comparator 8. This, upon application of an " order to tune " signal to terminal 9, applies a re-setting signal to line 10 if the signal from device 7 differs from the reference level. Reference signal on line 10 re-sets a multi-stage counter and register 6, each stage of which controls a corresponding stage in attenuator 5, so that the latter is set for maximum attenuation. Comparator 8 also passes a starting pulse over line 11 to pulse source 12, e.g. a multivibrator, which consequently feeds a succession of pulses to counter 6, causing the gain to be reduced in successive steps until the signal at device 7 reaches the reference level, whereupon the attenuator is held in this position. The Specification also describes slightly modified modes of operation of the device.
GB2102164A 1964-05-21 1964-05-21 Improvements in or relating to automatic gain control arrangements Expired GB1075341A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE664231D BE664231A (en) 1964-05-21
GB2102164A GB1075341A (en) 1964-05-21 1964-05-21 Improvements in or relating to automatic gain control arrangements
SE542265A SE338075B (en) 1964-05-21 1965-04-26
DE19651466163 DE1466163A1 (en) 1964-05-21 1965-04-29 Automatically tuned high-frequency circuit with an arrangement for automatic gain control
CH690065A CH451247A (en) 1964-05-21 1965-05-18 Electronic device including automatic gain adjustment
NL6506417A NL6506417A (en) 1964-05-21 1965-05-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2102164A GB1075341A (en) 1964-05-21 1964-05-21 Improvements in or relating to automatic gain control arrangements

Publications (1)

Publication Number Publication Date
GB1075341A true GB1075341A (en) 1967-07-12

Family

ID=10155858

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2102164A Expired GB1075341A (en) 1964-05-21 1964-05-21 Improvements in or relating to automatic gain control arrangements

Country Status (5)

Country Link
BE (1) BE664231A (en)
CH (1) CH451247A (en)
GB (1) GB1075341A (en)
NL (1) NL6506417A (en)
SE (1) SE338075B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929824U (en) * 1972-06-15 1974-03-14
WO2004049563A2 (en) * 2002-11-28 2004-06-10 Infineon Technologies Ag Amplifier assembly, receiver comprising said assembly and method for operating a programmable amplifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929824U (en) * 1972-06-15 1974-03-14
JPS5317736Y2 (en) * 1972-06-15 1978-05-12
WO2004049563A2 (en) * 2002-11-28 2004-06-10 Infineon Technologies Ag Amplifier assembly, receiver comprising said assembly and method for operating a programmable amplifier
WO2004049563A3 (en) * 2002-11-28 2004-09-02 Infineon Technologies Ag Amplifier assembly, receiver comprising said assembly and method for operating a programmable amplifier
US7734267B2 (en) 2002-11-28 2010-06-08 Infineon Technologies Ag Amplifier assembly, receiver comprising said assembly and method for operating a programmable amplifier

Also Published As

Publication number Publication date
CH451247A (en) 1968-05-15
NL6506417A (en) 1965-11-22
BE664231A (en)
SE338075B (en) 1971-08-30

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