JPS57171819A - Addition type variable equalizer - Google Patents

Addition type variable equalizer

Info

Publication number
JPS57171819A
JPS57171819A JP5748981A JP5748981A JPS57171819A JP S57171819 A JPS57171819 A JP S57171819A JP 5748981 A JP5748981 A JP 5748981A JP 5748981 A JP5748981 A JP 5748981A JP S57171819 A JPS57171819 A JP S57171819A
Authority
JP
Japan
Prior art keywords
circuit
transmitting circuit
jaumann
frequency characteristics
subordinate
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
JP5748981A
Other languages
Japanese (ja)
Other versions
JPS6151443B2 (en
Inventor
Kenji Ogawa
Yukio Mitsune
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5748981A priority Critical patent/JPS57171819A/en
Publication of JPS57171819A publication Critical patent/JPS57171819A/en
Publication of JPS6151443B2 publication Critical patent/JPS6151443B2/ja
Granted 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
    • H04B3/143—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers
    • H04B3/145—Control of transmission; Equalising characterised by the equalising network used using amplitude-frequency equalisers variable equalisers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters And Equalizers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To set and further reset necessary frequency characteristics of level variation to be compensated, by connecting a Jaumann circuit, which includes a variable resistor for varying a transfer function, in series to a subordinate transmitting circuit. CONSTITUTION:A signal from an input terminal 1 is branched by a branching hybrid transformer 5 to a main transmitting circuit 8 consisting of an attenuator 6 and a phase compensating circuit 7, and a subordinate transmitting circuit 15 consisting of an amplifier 10, variable resistance networks 111-11n, a Jaumann transformer 12, a Jaumann circuit 13, and an amplifier 14. Signals from the main transmitting circuit 8 and subordinate transmitting circuit 15 are added together by a hybrid transformer 16, whose output is led out from an output terminal 2. The variable resistance networks 111-11n consists of frequency characteristic circuits 181-18n for obtaining necessary frequency characteristics, variable resistors 191-19n, and resistors 201-20n, and have different frequency characteristics.
JP5748981A 1981-04-15 1981-04-15 Addition type variable equalizer Granted JPS57171819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5748981A JPS57171819A (en) 1981-04-15 1981-04-15 Addition type variable equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5748981A JPS57171819A (en) 1981-04-15 1981-04-15 Addition type variable equalizer

Publications (2)

Publication Number Publication Date
JPS57171819A true JPS57171819A (en) 1982-10-22
JPS6151443B2 JPS6151443B2 (en) 1986-11-08

Family

ID=13057127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5748981A Granted JPS57171819A (en) 1981-04-15 1981-04-15 Addition type variable equalizer

Country Status (1)

Country Link
JP (1) JPS57171819A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0496782U (en) * 1991-01-31 1992-08-21

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0496782U (en) * 1991-01-31 1992-08-21

Also Published As

Publication number Publication date
JPS6151443B2 (en) 1986-11-08

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