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JPS5660120A - Transmitting-antenna sharing system of ground mobile radio base station - Google Patents

Transmitting-antenna sharing system of ground mobile radio base station

Info

Publication number
JPS5660120A
JPS5660120A JP13611279A JP13611279A JPS5660120A JP S5660120 A JPS5660120 A JP S5660120A JP 13611279 A JP13611279 A JP 13611279A JP 13611279 A JP13611279 A JP 13611279A JP S5660120 A JPS5660120 A JP S5660120A
Authority
JP
Japan
Prior art keywords
band
transmitting
circulator
transmitters
transmitter
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
JP13611279A
Other languages
Japanese (ja)
Other versions
JPS5823777B2 (en
Inventor
Takanori Utano
Kunio Watanabe
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 JP13611279A priority Critical patent/JPS5823777B2/en
Publication of JPS5660120A publication Critical patent/JPS5660120A/en
Publication of JPS5823777B2 publication Critical patent/JPS5823777B2/en
Expired 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
    • H04B7/155—Ground-based stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Details Of Aerials (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To improve the flexibility of radio channel arrangement and to facilitate the design of the transmitting antenna system, by composing a transmitting-antenna sharing part of a circulator, junction box and band-pass filters. CONSTITUTION:When one transmitter is equipped, all radio channels are connected to the transmitter, which can be switched, through isolator 504 and connector 505 connected direct from circulator 501, so that transmission bands Tx1-Tx8 can be covered. When two transmitters are equipped, junction box 502, band-pass filters 503, isolators 504, etc., are equipped and each band-pass filter 503 selects one Tx1 among Tx1-Tx8 to determine the center frequency and passing-band width, so that the transmitters can provide transmission of frequency band Tx1. Even if the transmitter connected direct from circulator 501 performs transmission over a radio channel within frequency band Tx1, its signal never arrives the antenna. Transmitters can be extended according to the communication traffic.
JP13611279A 1979-10-22 1979-10-22 Land mobile radio base station transmitting antenna sharing system Expired JPS5823777B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13611279A JPS5823777B2 (en) 1979-10-22 1979-10-22 Land mobile radio base station transmitting antenna sharing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13611279A JPS5823777B2 (en) 1979-10-22 1979-10-22 Land mobile radio base station transmitting antenna sharing system

Publications (2)

Publication Number Publication Date
JPS5660120A true JPS5660120A (en) 1981-05-23
JPS5823777B2 JPS5823777B2 (en) 1983-05-17

Family

ID=15167567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13611279A Expired JPS5823777B2 (en) 1979-10-22 1979-10-22 Land mobile radio base station transmitting antenna sharing system

Country Status (1)

Country Link
JP (1) JPS5823777B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015015652A (en) * 2013-07-05 2015-01-22 富士通コンポーネント株式会社 Communication device and communication control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015015652A (en) * 2013-07-05 2015-01-22 富士通コンポーネント株式会社 Communication device and communication control method

Also Published As

Publication number Publication date
JPS5823777B2 (en) 1983-05-17

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