FR2317824A1 - Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq. - Google Patents

Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq.

Info

Publication number
FR2317824A1
FR2317824A1 FR7521503A FR7521503A FR2317824A1 FR 2317824 A1 FR2317824 A1 FR 2317824A1 FR 7521503 A FR7521503 A FR 7521503A FR 7521503 A FR7521503 A FR 7521503A FR 2317824 A1 FR2317824 A1 FR 2317824A1
Authority
FR
France
Prior art keywords
freq
converter
modulating
lowering
give
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
FR7521503A
Other languages
French (fr)
Other versions
FR2317824B1 (en
Inventor
Philippe Magne
Claude Bremenson
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7521503A priority Critical patent/FR2317824A1/en
Publication of FR2317824A1 publication Critical patent/FR2317824A1/en
Application granted granted Critical
Publication of FR2317824B1 publication Critical patent/FR2317824B1/fr
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
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18515—Transmission equipment in satellites or space-based relays

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

The telecommunications repeater may be used in a satellite. It consists of the series combination of a first amplifier for all n input signals lying in a first frequency band, a frequency converter, and a second amplifier for all signals lying in a second frequency band. The frequency converter has a modulator. The modulator consists of a frequency generator and the converter transposes the first frequency band into a low frequency band. The modulator angle modulates this low band such that the modulated signal lies in the second frequency band.
FR7521503A 1975-07-09 1975-07-09 Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq. Granted FR2317824A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7521503A FR2317824A1 (en) 1975-07-09 1975-07-09 Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7521503A FR2317824A1 (en) 1975-07-09 1975-07-09 Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq.

Publications (2)

Publication Number Publication Date
FR2317824A1 true FR2317824A1 (en) 1977-02-04
FR2317824B1 FR2317824B1 (en) 1978-03-24

Family

ID=9157693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521503A Granted FR2317824A1 (en) 1975-07-09 1975-07-09 Telecommunications repeater with freq. converter - uses converter for lowering freq. and modulating to give second output freq.

Country Status (1)

Country Link
FR (1) FR2317824A1 (en)

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
AUTEUR SULLIVAN. PAGES 129 A 136) *
REVUE US : "IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS", VOL AES-6, NO. 2, MARS 1970. ARTICLE : "FUTURE TRENDS IN MILITARY COMMUNICATION SATELLITE REPEATERS" *

Also Published As

Publication number Publication date
FR2317824B1 (en) 1978-03-24

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Legal Events

Date Code Title Description
ST Notification of lapse