NO995609L - AGC-system - Google Patents

AGC-system

Info

Publication number
NO995609L
NO995609L NO19995609A NO995609A NO995609L NO 995609 L NO995609 L NO 995609L NO 19995609 A NO19995609 A NO 19995609A NO 995609 A NO995609 A NO 995609A NO 995609 L NO995609 L NO 995609L
Authority
NO
Norway
Prior art keywords
input
signal
output
coupled
receive
Prior art date
Application number
NO19995609A
Other languages
English (en)
Other versions
NO995609D0 (no
Inventor
Paal Longva Hellum
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to NO19995609A priority Critical patent/NO995609L/no
Publication of NO995609D0 publication Critical patent/NO995609D0/no
Priority to US09/711,609 priority patent/US6433633B1/en
Publication of NO995609L publication Critical patent/NO995609L/no

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
    • H03G3/3089—Control of digital or coded signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

En automatisk forsterkningskontrollsystem som omfatter en systeminngang, en systemutgang, detekteringsorganer innret- tet til å konvertere et inngangssignal til en indikasjon på signalnivå, hvor detekteringsorganene inkluderer en like- retter og et 60 tapp FIR-filter med et Chebychev-vindu, en AGC-tilstandsmaskin koblet for å motta nevnte indikasjon og avgi et kontrollsignal for forsterkningsnivå, hvilken til- standsmaskin er innrettet til å justere nevnte kontrollsig- nal for forsterkningsnivå når det er et signal tilstede på systeminngangen, en forsterker med variabel forsterkning med en inngang koblet for å motta inngangssignalet fra sys- teminngangen, en utgang koblet til systemutgangen, og en kontrollinngang koblet for å motta nevnte kontrollsignal for forsterkningsnivå, for å kontrollere forsterkningen i nevnte forsterker med variabel forsterkning, for å kunne holde signalnivået på utgangen vesentlig konstant, ettersom nivået på inngangssignalet varierer.
NO19995609A 1999-11-15 1999-11-15 AGC-system NO995609L (no)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NO19995609A NO995609L (no) 1999-11-15 1999-11-15 AGC-system
US09/711,609 US6433633B1 (en) 1999-11-15 2000-11-13 Automatic gain control system with signal presence conditioning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO19995609A NO995609L (no) 1999-11-15 1999-11-15 AGC-system

Publications (2)

Publication Number Publication Date
NO995609D0 NO995609D0 (no) 1999-11-15
NO995609L true NO995609L (no) 2001-05-16

Family

ID=19903987

Family Applications (1)

Application Number Title Priority Date Filing Date
NO19995609A NO995609L (no) 1999-11-15 1999-11-15 AGC-system

Country Status (2)

Country Link
US (1) US6433633B1 (no)
NO (1) NO995609L (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030120484A1 (en) * 2001-06-12 2003-06-26 David Wong Method and system for generating colored comfort noise in the absence of silence insertion description packets
US7276967B2 (en) * 2005-07-01 2007-10-02 Sanyo Electric Co., Ltd. Signal level adjusting apparatus, gain value updating method, and program
US9401685B2 (en) * 2012-06-08 2016-07-26 Apple Inc. Systems and methods for adjusting automatic gain control
US20140073278A1 (en) * 2012-09-10 2014-03-13 Uniband Electronic Corp. RSSI estimation based on VGA control and threshold detection
CN110365302B (zh) * 2019-06-14 2023-03-28 中国人民解放军空军工程大学 一种通信系统自动增益控制方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848194A (en) * 1973-07-16 1974-11-12 Matsushita Electric Co Ltd Automatic gain control circuit
US5016205A (en) 1989-04-27 1991-05-14 Motorola, Inc. Digital signal processor based AGC
JPH03175708A (ja) * 1989-12-04 1991-07-30 Fujitsu Ltd 自動利得制御回路
US5369711A (en) * 1990-08-31 1994-11-29 Bellsouth Corporation Automatic gain control for a headset
US6201443B1 (en) * 1997-11-20 2001-03-13 Applied Micro Circuits Corporation Radio frequency variable gain amplifier fabricated in complementary metal oxide semiconductor technology

Also Published As

Publication number Publication date
NO995609D0 (no) 1999-11-15
US6433633B1 (en) 2002-08-13

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application