JPS556912A - Satellite repeating system - Google Patents

Satellite repeating system

Info

Publication number
JPS556912A
JPS556912A JP7864778A JP7864778A JPS556912A JP S556912 A JPS556912 A JP S556912A JP 7864778 A JP7864778 A JP 7864778A JP 7864778 A JP7864778 A JP 7864778A JP S556912 A JPS556912 A JP S556912A
Authority
JP
Japan
Prior art keywords
vertical
deflecting
irradiate
horizontal deflecting
beams
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
JP7864778A
Other languages
Japanese (ja)
Inventor
Toru Okajima
Makoto Kawai
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP7864778A priority Critical patent/JPS556912A/en
Priority to DE19792908031 priority patent/DE2908031C2/en
Priority to FR7905557A priority patent/FR2418984A1/en
Publication of JPS556912A publication Critical patent/JPS556912A/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
    • H04B7/2046—SS-TDMA, TDMA satellite switching

Landscapes

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

Abstract

PURPOSE:To realize a satellite repeating system which can increase the transmission capacity. CONSTITUTION:The signal received through each antenna 1 is separated into the vertical and horizontal deflecting waves by deflecting branching filter 11. Thus the receiving phased array antenna comprising low-noise amplifier 2, phase shifter 3, power compounding unit 4 and deflecting branching filter 11 forms two scan beams for the vertical and horizontal deflecting waves. Each beam is defined to irradiate the area equivalent to about 1/16 the whole of Japan. The vertical and horizontal deflecting beams irradiate sequentially grounds a1-ak plus ai+1-ak and a1-ai respectively. Thus, up-link signals A and B are received at the output of two repeating amplifiers 5A and 5B. The received signals are converted with amplification into the down-link frequencies through 5A and 5B, and then down- link signals A and B are transmitted to each destination via the phased array antennas. In this case, the destinations have a time shift between the vertical and horizontal deflecting beams, and accordingly each spot beam is scanned in such way that it may not irradiate the same area at one time.
JP7864778A 1978-03-03 1978-06-30 Satellite repeating system Pending JPS556912A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7864778A JPS556912A (en) 1978-06-30 1978-06-30 Satellite repeating system
DE19792908031 DE2908031C2 (en) 1978-03-03 1979-03-01 Satellite relay system
FR7905557A FR2418984A1 (en) 1978-03-03 1979-03-02 Satellite relay station using frequency-converted TDMA signals - passed back to antennae via distributor, phase shifter, amplifiers and multiplexers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7864778A JPS556912A (en) 1978-06-30 1978-06-30 Satellite repeating system

Publications (1)

Publication Number Publication Date
JPS556912A true JPS556912A (en) 1980-01-18

Family

ID=13667647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7864778A Pending JPS556912A (en) 1978-03-03 1978-06-30 Satellite repeating system

Country Status (1)

Country Link
JP (1) JPS556912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281726A (en) * 1985-06-07 1986-12-12 Nippon Telegr & Teleph Corp <Ntt> Multi-beam satellite communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61281726A (en) * 1985-06-07 1986-12-12 Nippon Telegr & Teleph Corp <Ntt> Multi-beam satellite communication system
JPH047855B2 (en) * 1985-06-07 1992-02-13 Nippon Telegraph & Telephone

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