FR2429523A1 - Reseau d'egalisation - Google Patents

Reseau d'egalisation

Info

Publication number
FR2429523A1
FR2429523A1 FR7916119A FR7916119A FR2429523A1 FR 2429523 A1 FR2429523 A1 FR 2429523A1 FR 7916119 A FR7916119 A FR 7916119A FR 7916119 A FR7916119 A FR 7916119A FR 2429523 A1 FR2429523 A1 FR 2429523A1
Authority
FR
France
Prior art keywords
network
frequency band
attenuation
equalization network
telephony
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.)
Granted
Application number
FR7916119A
Other languages
English (en)
Other versions
FR2429523B1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2429523A1 publication Critical patent/FR2429523A1/fr
Application granted granted Critical
Publication of FR2429523B1 publication Critical patent/FR2429523B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/14—Control of transmission; Equalising characterised by the equalising network used
    • H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49016—Antenna or wave energy "plumbing" making

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters And Equalizers (AREA)

Abstract

Réseau devant égaliser des défauts résiduels dans la caractéristique de la voie de transmission dans laquelle opère un système de transmission à large bande de fréquence. Ledit réseau est muni de plusieurs branches d'atténuation qui agissent dans différentes parties de bande de fréquence, ainsi que d'un seul amplificateur rétrocouplé dont le facteur de rétrocouplage par partie de bande de fréquence est réglable à l'aide d'un potentiomètre faisant partie de ladite branche d'atténuation. Application : téléphonie.
FR7916119A 1978-06-22 1979-06-22 Reseau d'egalisation Expired FR2429523B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7806727A NL7806727A (nl) 1978-06-22 1978-06-22 Egalisatienetwerk.

Publications (2)

Publication Number Publication Date
FR2429523A1 true FR2429523A1 (fr) 1980-01-18
FR2429523B1 FR2429523B1 (fr) 1986-01-24

Family

ID=19831095

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916119A Expired FR2429523B1 (fr) 1978-06-22 1979-06-22 Reseau d'egalisation

Country Status (10)

Country Link
US (1) US4225834A (fr)
JP (1) JPS6040214B2 (fr)
CA (1) CA1132210A (fr)
CH (1) CH648165A5 (fr)
DE (1) DE2924043C2 (fr)
FI (1) FI71451C (fr)
FR (1) FR2429523B1 (fr)
GB (1) GB2023960B (fr)
NL (1) NL7806727A (fr)
SE (1) SE432504B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718110A (en) * 1980-07-09 1982-01-29 Arupain Kk Equalizer device
JPS5824210A (ja) * 1981-08-05 1983-02-14 Arupain Kk イコライザ装置
JPS63122898A (ja) * 1986-11-07 1988-05-26 三井建設株式会社 ライニングの打設方法
JPH0712133B2 (ja) * 1988-10-21 1995-02-08 三菱電機株式会社 音質調整装置
JPH0774593B2 (ja) * 1991-05-27 1995-08-09 東亜グラウト工業株式会社 管路築造方法
US6798881B2 (en) * 1999-06-07 2004-09-28 Acoustic Technologies, Inc. Noise reduction circuit for telephones
US8644773B2 (en) * 2009-12-10 2014-02-04 Skyworks Solutions, Inc. Multiband low noise amplifier (LNA) with parallel resonant feedback
WO2014144958A1 (fr) 2013-03-15 2014-09-18 Forrest James Brown Amplificateur logarithmique sélectif en fréquence à capacité de démodulation de fréquence intrinsèque
US11082014B2 (en) 2013-09-12 2021-08-03 Dockon Ag Advanced amplifier system for ultra-wide band RF communication
US11183974B2 (en) * 2013-09-12 2021-11-23 Dockon Ag Logarithmic detector amplifier system in open-loop configuration for use as high sensitivity selective receiver without frequency conversion
KR102226416B1 (ko) * 2013-09-12 2021-03-11 도콘 아게 주파수 변환 없이 고감도 선택적 수신기로서 사용되기 위한 대수 검출 증폭기 시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950070C (de) * 1936-12-23 1956-10-04 Gen Electric Co Ltd Regelbares Daempfungsnetzwerk
FR1564101A (fr) * 1967-03-16 1969-04-18 Fujitsu Ltd
US3835411A (en) * 1971-08-27 1974-09-10 Ericsson Telefon Ab L M Adjustable equalizing network
FR2305890A1 (fr) * 1975-03-22 1976-10-22 Tekade Felten & Guilleaume Montage de circuit pour un correcteur de distorsion reglable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658958A (en) * 1949-07-16 1953-11-10 Wilcox Gay Corp Negative feedback frequency response compensation amplifier system
US3336539A (en) * 1965-04-15 1967-08-15 Giannini Scient Corp Variable equalizer system having a plurality of parallel connected tuned circuits

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950070C (de) * 1936-12-23 1956-10-04 Gen Electric Co Ltd Regelbares Daempfungsnetzwerk
FR1564101A (fr) * 1967-03-16 1969-04-18 Fujitsu Ltd
US3835411A (en) * 1971-08-27 1974-09-10 Ericsson Telefon Ab L M Adjustable equalizing network
FR2305890A1 (fr) * 1975-03-22 1976-10-22 Tekade Felten & Guilleaume Montage de circuit pour un correcteur de distorsion reglable

Also Published As

Publication number Publication date
CA1132210A (fr) 1982-09-21
US4225834A (en) 1980-09-30
NL7806727A (nl) 1979-12-28
GB2023960A (en) 1980-01-03
DE2924043A1 (de) 1980-01-03
DE2924043C2 (de) 1982-06-09
JPS554197A (en) 1980-01-12
GB2023960B (en) 1982-06-30
JPS6040214B2 (ja) 1985-09-10
SE432504B (sv) 1984-04-02
FI71451B (fi) 1986-09-09
FR2429523B1 (fr) 1986-01-24
FI71451C (fi) 1986-12-19
FI791948A (fi) 1979-12-23
SE7905379L (sv) 1979-12-23
CH648165A5 (de) 1985-02-28

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse
ST Notification of lapse