JPS56119541A - Fail soft type direct repeating installation - Google Patents

Fail soft type direct repeating installation

Info

Publication number
JPS56119541A
JPS56119541A JP2246380A JP2246380A JPS56119541A JP S56119541 A JPS56119541 A JP S56119541A JP 2246380 A JP2246380 A JP 2246380A JP 2246380 A JP2246380 A JP 2246380A JP S56119541 A JPS56119541 A JP S56119541A
Authority
JP
Japan
Prior art keywords
antenna
fail soft
repeater
fading margin
type direct
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
JP2246380A
Other languages
Japanese (ja)
Other versions
JPS5936456B2 (en
Inventor
Izumi Okuno
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 JP2246380A priority Critical patent/JPS5936456B2/en
Publication of JPS56119541A publication Critical patent/JPS56119541A/en
Publication of JPS5936456B2 publication Critical patent/JPS5936456B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems

Landscapes

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

Abstract

PURPOSE:To make the microwave repeating system into high reliability, by selecting the repeater gain, the fading margin, and the antenna coupling loss rationally to realize fail soft in the fading margin. CONSTITUTION:If antenna 1 is used as the receiving antenna, radio waves received by antenna 1 are amplified through by-pass circuit 2 by repeater main body 3 and are transmitted from antenna 4 when the system is normal. When the system is abnormal, by-pass circuit 2 is controlled by the repeater anomaly signal and the power source voltage anomaly to by-pass the circuit from terminal 8 to terminal 13, and radio waves are radiated from antenna 4. Consequently, when lowering of the gain of the repeating system for by-passing, is within the fading margin of the microwave communication system, system down is avoided to realize fail soft.
JP2246380A 1980-02-25 1980-02-25 Failsoft direct relay device Expired JPS5936456B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2246380A JPS5936456B2 (en) 1980-02-25 1980-02-25 Failsoft direct relay device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2246380A JPS5936456B2 (en) 1980-02-25 1980-02-25 Failsoft direct relay device

Publications (2)

Publication Number Publication Date
JPS56119541A true JPS56119541A (en) 1981-09-19
JPS5936456B2 JPS5936456B2 (en) 1984-09-04

Family

ID=12083390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2246380A Expired JPS5936456B2 (en) 1980-02-25 1980-02-25 Failsoft direct relay device

Country Status (1)

Country Link
JP (1) JPS5936456B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014185203A1 (en) * 2013-05-13 2014-11-20 横河電機株式会社 Field wireless relay device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100412U (en) * 1982-12-24 1984-07-06 シャープ株式会社 foot warmer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014185203A1 (en) * 2013-05-13 2014-11-20 横河電機株式会社 Field wireless relay device
JP2014222791A (en) * 2013-05-13 2014-11-27 横河電機株式会社 Field radio repeater
EP2999134A4 (en) * 2013-05-13 2017-01-11 Yokogawa Electric Corporation Field wireless relay device
US9998201B2 (en) 2013-05-13 2018-06-12 Yokogawa Electric Corporation Battery powered wireless relay switching to routing state on the basis of signal intensity

Also Published As

Publication number Publication date
JPS5936456B2 (en) 1984-09-04

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