JPS55110447A - Automatic gain control unit for time sharing multiple access communication - Google Patents

Automatic gain control unit for time sharing multiple access communication

Info

Publication number
JPS55110447A
JPS55110447A JP1883979A JP1883979A JPS55110447A JP S55110447 A JPS55110447 A JP S55110447A JP 1883979 A JP1883979 A JP 1883979A JP 1883979 A JP1883979 A JP 1883979A JP S55110447 A JPS55110447 A JP S55110447A
Authority
JP
Japan
Prior art keywords
amplifier
output
detector
gain control
automatic gain
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
JP1883979A
Other languages
Japanese (ja)
Other versions
JPS6238896B2 (en
Inventor
Teruhisa Kurokawa
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 JP1883979A priority Critical patent/JPS55110447A/en
Publication of JPS55110447A publication Critical patent/JPS55110447A/en
Publication of JPS6238896B2 publication Critical patent/JPS6238896B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To increase the performance of satellite communication line, by uniforming the level difference of the upstream burst from each earth station by use of the automatic gain control system and effectively using the transmission output of the satellite with delivery from the downstream line. CONSTITUTION:The input signal is amplified with the amplifier 33 with gain control circuit, the output of the amplifier 33 is branched with the signal branch circuit 34 to supply one output to the detector 35, the detector 35 performs envelope detection to obtain the output proportional to the level difference of each burst of the input to control the gain of the amplifier 33 via the amplifier 36. Further, the output of the branch circuit 34 is branched at the signal branch circuit 37, the signal branched at the circuit 37 is fed to the detector 38, the detector 38 performs envelope detection, the output of the detector 38 is fed to the amplifier 39 with gain control circuit via the amplifier 40, the level difference of burst is uniformed through the control of the gain of the amplifier 39, allowing to be delivered from the downstream line, thereby increasing the performance of satellite communication.
JP1883979A 1979-02-20 1979-02-20 Automatic gain control unit for time sharing multiple access communication Granted JPS55110447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1883979A JPS55110447A (en) 1979-02-20 1979-02-20 Automatic gain control unit for time sharing multiple access communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1883979A JPS55110447A (en) 1979-02-20 1979-02-20 Automatic gain control unit for time sharing multiple access communication

Publications (2)

Publication Number Publication Date
JPS55110447A true JPS55110447A (en) 1980-08-25
JPS6238896B2 JPS6238896B2 (en) 1987-08-20

Family

ID=11982718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1883979A Granted JPS55110447A (en) 1979-02-20 1979-02-20 Automatic gain control unit for time sharing multiple access communication

Country Status (1)

Country Link
JP (1) JPS55110447A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114066A2 (en) * 1983-01-14 1984-07-25 Nec Corporation Automatic gain control circuit for burst signal communication system
JPS59203244A (en) * 1983-05-04 1984-11-17 Hitachi Ltd Optical information reproducing device
JPH0739917U (en) * 1993-12-28 1995-07-18 親和工業株式会社 Wet dust collector
JP2006050205A (en) * 2004-08-04 2006-02-16 Broadcasting Satellite System Corp Satellite loading repeater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52100862A (en) * 1976-02-19 1977-08-24 Nec Corp Automatic gain control unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52100862A (en) * 1976-02-19 1977-08-24 Nec Corp Automatic gain control unit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114066A2 (en) * 1983-01-14 1984-07-25 Nec Corporation Automatic gain control circuit for burst signal communication system
JPS59203244A (en) * 1983-05-04 1984-11-17 Hitachi Ltd Optical information reproducing device
JPH0739917U (en) * 1993-12-28 1995-07-18 親和工業株式会社 Wet dust collector
JP2006050205A (en) * 2004-08-04 2006-02-16 Broadcasting Satellite System Corp Satellite loading repeater

Also Published As

Publication number Publication date
JPS6238896B2 (en) 1987-08-20

Similar Documents

Publication Publication Date Title
JPS5544225A (en) Time sharing gain adjustment circuit
JPS5348625A (en) Difference signal amplifier circuit
JPS55110447A (en) Automatic gain control unit for time sharing multiple access communication
JPS5491689A (en) Signal distributing system
JPS5742242A (en) Two-wire type bidirectional amplifier system
JPS54115011A (en) Signal compensation system
JPS52153139A (en) Interior power line carrier system
JPS5755630A (en) Television signal transmission line
JPS5460587A (en) Radar receiving device
JPS56100532A (en) Automatic gain control device
JPS57152239A (en) Signal transfer system of line amplifier
JPS5665532A (en) Transmitter
JPS5289008A (en) Controlling system for automatic gain of repeating transmission system
JPS55110449A (en) Data transmission unit
JPS5347221A (en) Gain monitoring system for relay amplifier
JPS5628551A (en) Carrier frequency multiplex terminal station adding unit
JPS54151314A (en) Amplifier on tower
JPS5423359A (en) Automatic gain control circuit
JPS5436155A (en) Hybrid junction circuit
JPS53116056A (en) Automatic cain control circuit
JPS6447188A (en) Agc method for amplifier in catv system
GB816134A (en) Improvements in or relating to telecommunication systems employing automatic gain regulators
JPS53105927A (en) Relay amplifying device
JPS536718A (en) Air fuel ratio control system
JPS55165059A (en) Test system for communication control unit