FR2429523A1 - Reseau d'egalisation - Google Patents
Reseau d'egalisationInfo
- 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
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.
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)
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)
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)
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 |
-
1978
- 1978-06-22 NL NL7806727A patent/NL7806727A/xx not_active Application Discontinuation
-
1979
- 1979-06-04 US US06/045,491 patent/US4225834A/en not_active Expired - Lifetime
- 1979-06-14 CA CA329,743A patent/CA1132210A/fr not_active Expired
- 1979-06-15 DE DE2924043A patent/DE2924043C2/de not_active Expired
- 1979-06-19 FI FI791948A patent/FI71451C/fi not_active IP Right Cessation
- 1979-06-19 CH CH5726/79A patent/CH648165A5/de not_active IP Right Cessation
- 1979-06-19 SE SE7905379A patent/SE432504B/sv unknown
- 1979-06-19 GB GB7921212A patent/GB2023960B/en not_active Expired
- 1979-06-21 JP JP54077605A patent/JPS6040214B2/ja not_active Expired
- 1979-06-22 FR FR7916119A patent/FR2429523B1/fr not_active Expired
Patent Citations (4)
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 |