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JPS5772435A - Two-way repeater for leakage coaxial cable - Google Patents

Two-way repeater for leakage coaxial cable

Info

Publication number
JPS5772435A
JPS5772435A JP55149195A JP14919580A JPS5772435A JP S5772435 A JPS5772435 A JP S5772435A JP 55149195 A JP55149195 A JP 55149195A JP 14919580 A JP14919580 A JP 14919580A JP S5772435 A JPS5772435 A JP S5772435A
Authority
JP
Japan
Prior art keywords
frequencies
frequency
coaxial cable
leakage coaxial
sent
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
JP55149195A
Other languages
Japanese (ja)
Other versions
JPS611945B2 (en
Inventor
Susumu Nakabayashi
Teruyuki Sano
Nobuo Miidokoro
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment 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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Priority to JP55149195A priority Critical patent/JPS5772435A/en
Publication of JPS5772435A publication Critical patent/JPS5772435A/en
Publication of JPS611945B2 publication Critical patent/JPS611945B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/28—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium using the near field of leaky cables, e.g. of leaky coaxial cables

Landscapes

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

Abstract

PURPOSE:To extend the communication distance, by providing band pass filters having different pass frequencies in a pair of amplifiers constituting a two-way repeater to not only prevent frequencies from coming round to respective amplifiers but also improving the gain of amplifiers. CONSTITUTION:When an input signal of a frequency fc comes from a left leakage coaxial cable 10, this frequency is inputted to a mixer MIX1 through a band pass filter BPF1 to obtain frequencies fc+ or -fL as the output. Frequencies fc+ or -fL is permitted to pass through a BPF2 and is sent to an amplifier AMP1 and has only a gain G 1 amplified and is sent to a mixer MIX2 through a PD2. Frequencies (fc-fL)+ or -fL are obtained in the output of the MIX2, and only the frequency fc is selected by a BPF4 and is sent to a right leakage coaxial cable 20. When the input signal of the frequency fc comes from the right leakage coaxial cable 20, the same operation is performed with the exception that the frequency passes through another amplifier AMP2 and band pass filter BPF3.
JP55149195A 1980-10-23 1980-10-23 Two-way repeater for leakage coaxial cable Granted JPS5772435A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55149195A JPS5772435A (en) 1980-10-23 1980-10-23 Two-way repeater for leakage coaxial cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149195A JPS5772435A (en) 1980-10-23 1980-10-23 Two-way repeater for leakage coaxial cable

Publications (2)

Publication Number Publication Date
JPS5772435A true JPS5772435A (en) 1982-05-06
JPS611945B2 JPS611945B2 (en) 1986-01-21

Family

ID=15469888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149195A Granted JPS5772435A (en) 1980-10-23 1980-10-23 Two-way repeater for leakage coaxial cable

Country Status (1)

Country Link
JP (1) JPS5772435A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6515515B1 (en) * 1997-11-20 2003-02-04 International Business Machines Corporation Bidirectional data transfer path having increased bandwidth

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04123628U (en) * 1991-04-24 1992-11-10 株式会社ケンウツド wireless communication device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6515515B1 (en) * 1997-11-20 2003-02-04 International Business Machines Corporation Bidirectional data transfer path having increased bandwidth

Also Published As

Publication number Publication date
JPS611945B2 (en) 1986-01-21

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