JPS55120232A - Repeater - Google Patents

Repeater

Info

Publication number
JPS55120232A
JPS55120232A JP2705279A JP2705279A JPS55120232A JP S55120232 A JPS55120232 A JP S55120232A JP 2705279 A JP2705279 A JP 2705279A JP 2705279 A JP2705279 A JP 2705279A JP S55120232 A JPS55120232 A JP S55120232A
Authority
JP
Japan
Prior art keywords
amplifier
time
signal
gain
input signal
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.)
Pending
Application number
JP2705279A
Other languages
Japanese (ja)
Inventor
Hiroyuki Ishihara
Susumu Kitatsume
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 JP2705279A priority Critical patent/JPS55120232A/en
Publication of JPS55120232A publication Critical patent/JPS55120232A/en
Pending 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
    • H04B7/2043—Mixed mode, TDM and FDM systems

Landscapes

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

Abstract

PURPOSE:To make it possible to use both FDMA and TDMA signals for repeating amplification in common and then to make use of that effectively for a satellite repeater, etc., by providing a delay circuit whose delay time agrees with the time when a gain control signal and input signal arrive at a variable gain amplifier. CONSTITUTION:A signal branched 7 partially is level-detected and amplified 11 and then applied to input terminal C of variable gain amplifier 9 as gain control signal Sc. Input signal Sin, on the other hand, is applied to amplifier 9 via delay circuit 8 and delay time (gamma) of circuit 8 is determined so that the time when the gain of amplifier 9 has been controlled will be equalized by signal Sc to when signal Sin reaches amplifier 9. As a result, the gain can be varied according to the input signal level without time delay, so that a constant output can be obtained without reference to the speed of the input signal level. Further, there is the advantage to use it for both FDMA and TSMA signals.
JP2705279A 1979-03-08 1979-03-08 Repeater Pending JPS55120232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2705279A JPS55120232A (en) 1979-03-08 1979-03-08 Repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2705279A JPS55120232A (en) 1979-03-08 1979-03-08 Repeater

Publications (1)

Publication Number Publication Date
JPS55120232A true JPS55120232A (en) 1980-09-16

Family

ID=12210292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2705279A Pending JPS55120232A (en) 1979-03-08 1979-03-08 Repeater

Country Status (1)

Country Link
JP (1) JPS55120232A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638998A1 (en) * 1993-08-11 1995-02-15 Plessey Semiconductors Limited Fast-acting automatic gain control arrangement
EP0654900A2 (en) * 1993-11-19 1995-05-24 Philips Patentverwaltung GmbH Radio communication device with power control of transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0638998A1 (en) * 1993-08-11 1995-02-15 Plessey Semiconductors Limited Fast-acting automatic gain control arrangement
EP0654900A2 (en) * 1993-11-19 1995-05-24 Philips Patentverwaltung GmbH Radio communication device with power control of transmission
EP0654900A3 (en) * 1993-11-19 1996-01-31 Philips Patentverwaltung Radio communication device with power control of transmission.
US5832374A (en) * 1993-11-19 1998-11-03 U.S. Phillips Corporation Radio transceiver including transmitter power control circuit

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