JPS5511602A - Automatic amplitude phase equalization system for fm circuit - Google Patents

Automatic amplitude phase equalization system for fm circuit

Info

Publication number
JPS5511602A
JPS5511602A JP8352478A JP8352478A JPS5511602A JP S5511602 A JPS5511602 A JP S5511602A JP 8352478 A JP8352478 A JP 8352478A JP 8352478 A JP8352478 A JP 8352478A JP S5511602 A JPS5511602 A JP S5511602A
Authority
JP
Japan
Prior art keywords
signals
amplitude
base band
circuit
phase
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
JP8352478A
Other languages
Japanese (ja)
Other versions
JPS5836859B2 (en
Inventor
Kazuo Kawai
Hidetaka Yanagidaira
Michitoshi Tamori
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP8352478A priority Critical patent/JPS5836859B2/en
Publication of JPS5511602A publication Critical patent/JPS5511602A/en
Publication of JPS5836859B2 publication Critical patent/JPS5836859B2/en
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
    • H04B3/10—Control of transmission; Equalising by pilot signal

Landscapes

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

Abstract

PURPOSE:To realize a high-quality circuit featuring a reduced amount of the intermodulaion noise by securing an automatic equalization of both the amplitude and phase characteristics via the combination wave of variuos pilot signals contained in the base band signals. CONSTITUTION:In the circuit which gives an automatic equalization up to the 6th amplitude characteristics and 5th phase characteristics, the IF signals undergo the amplitude limitation through limiter 11 after passing through power series type variable amplitude equalizers 130, 140, 150 and 160 plus power series type phase equalizers 220, 230, 240 and 250 each. And the demodulation is given to the FM signals through FM signal demodulator 12, and the base band signals are applied to output terminal 13. Then the 2nd-5th combination waves of various pilot signals contained in the demodulated base band signals are extracted through BPF21, 31, 41 and 51 each and then detected by envelope detectors 22, 32, 42 and 52 to be applied to phase detectors 132, 142, 152, 162, 222, 232, 242 and 252 via DC blocking circuits 23, 33, 43 and 53 each.
JP8352478A 1978-07-11 1978-07-11 Automatic amplitude phase equalization method in FM line Expired JPS5836859B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8352478A JPS5836859B2 (en) 1978-07-11 1978-07-11 Automatic amplitude phase equalization method in FM line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8352478A JPS5836859B2 (en) 1978-07-11 1978-07-11 Automatic amplitude phase equalization method in FM line

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6233583A Division JPS5932214A (en) 1983-04-11 1983-04-11 Power series type variable amplitude and phase transversal filter

Publications (2)

Publication Number Publication Date
JPS5511602A true JPS5511602A (en) 1980-01-26
JPS5836859B2 JPS5836859B2 (en) 1983-08-12

Family

ID=13804858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8352478A Expired JPS5836859B2 (en) 1978-07-11 1978-07-11 Automatic amplitude phase equalization method in FM line

Country Status (1)

Country Link
JP (1) JPS5836859B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932214A (en) * 1983-04-11 1984-02-21 Kokusai Denshin Denwa Co Ltd <Kdd> Power series type variable amplitude and phase transversal filter

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS619063U (en) * 1984-06-22 1986-01-20 領子 森本 picture stand
JPS6255971U (en) * 1986-08-23 1987-04-07
JPS6266555U (en) * 1986-08-23 1987-04-24
JPS6266554U (en) * 1986-08-23 1987-04-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932214A (en) * 1983-04-11 1984-02-21 Kokusai Denshin Denwa Co Ltd <Kdd> Power series type variable amplitude and phase transversal filter
JPS6327896B2 (en) * 1983-04-11 1988-06-06 Kokusai Denshin Denwa Co Ltd

Also Published As

Publication number Publication date
JPS5836859B2 (en) 1983-08-12

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