JPS5660119A - 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
JPS5660119A
JPS5660119A JP13521979A JP13521979A JPS5660119A JP S5660119 A JPS5660119 A JP S5660119A JP 13521979 A JP13521979 A JP 13521979A JP 13521979 A JP13521979 A JP 13521979A JP S5660119 A JPS5660119 A JP S5660119A
Authority
JP
Japan
Prior art keywords
band
groups
transmitting
sharing system
antennas
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
JP13521979A
Other languages
Japanese (ja)
Inventor
Takanori Utano
Kunio Watanabe
Mitsuobi Kamata
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 JP13521979A priority Critical patent/JPS5660119A/en
Publication of JPS5660119A publication Critical patent/JPS5660119A/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
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile

Abstract

PURPOSE:To facilitate the design and to reduce a division loss as to traffic by equalizing respective band-pass filters in passing band width and resonance frequency in respective groups of antennas and by covering the same passing bands overlapping each other as many as groups of shared antennas. CONSTITUTION:Respective band-pass filters 322 of the transmitting-antenna sharing system cover the same passing bands overlapping each other as many as groups of shared antennas and to each band-pass filter 322, transmitter 401 the multichannel switching function available for transmission over a radio channel in the corresponding band is connected to make the same bands overlap as many as groups of antennas. Consequently, the design of the transmitting-antenna sharing system is facilitated and a division loss as to the traffic can be reduced. In addition, the radio channel used by the mobile station in the 1st radio zone can be used in the next radio zone in an area where the same frequency group is in use, so that multichannel switching functions at the mobile station side can be reduced greatly.
JP13521979A 1979-10-22 1979-10-22 Transmitting-antenna sharing system of ground mobile radio base station Pending JPS5660119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13521979A JPS5660119A (en) 1979-10-22 1979-10-22 Transmitting-antenna sharing system of ground mobile radio base station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13521979A JPS5660119A (en) 1979-10-22 1979-10-22 Transmitting-antenna sharing system of ground mobile radio base station

Publications (1)

Publication Number Publication Date
JPS5660119A true JPS5660119A (en) 1981-05-23

Family

ID=15146603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13521979A Pending JPS5660119A (en) 1979-10-22 1979-10-22 Transmitting-antenna sharing system of ground mobile radio base station

Country Status (1)

Country Link
JP (1) JPS5660119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273643U (en) * 1985-10-28 1987-05-12

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5456341A (en) * 1977-10-14 1979-05-07 Nippon Telegr & Teleph Corp <Ntt> Transmission antenna sharing system for land mobile rado base station

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5456341A (en) * 1977-10-14 1979-05-07 Nippon Telegr & Teleph Corp <Ntt> Transmission antenna sharing system for land mobile rado base station

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6273643U (en) * 1985-10-28 1987-05-12

Similar Documents

Publication Publication Date Title
JPS5456341A (en) Transmission antenna sharing system for land mobile rado base station
MX151970A (en) IMPROVEMENTS TO BAND PASS FILTER FOR RADIO TRANSMISSION AND RECEPTION
WO2001045273A3 (en) Duplexer with improved transmission/receiving band separation
AU533920B2 (en) Frequency diversity radio transmission
EP0109795A3 (en) A filter for use in a cable television system
AU4374779A (en) Multi band radio receiver system
EP0036431A4 (en) Transmitter having a phase-locked loop.
ES8101290A1 (en) Digital signalling system
JPS57125559A (en) Single side band input wave receiver
GB1368880A (en) Communications repeater
CA2089701A1 (en) System and method for combining multiple transmitters in a multiple channel communication system
JPS5660119A (en) Transmitting-antenna sharing system of ground mobile radio base station
YU242883A (en) Radio transmitter with single side band
DE3566338D1 (en) Improvements in multicoupler systems
JPS5658338A (en) Composite type radio channel location system in mobile communication
JPS5660120A (en) Transmitting-antenna sharing system of ground mobile radio base station
JPS5357725A (en) High frequency inductive m band pass filter
JPS52117012A (en) S/n improvement
JPS5329010A (en) Cb transceiver with broadcasting band radio receiver
HU173564B (en) Multiple vhf band pass filter, in particular for the improvement of the pre-selection at the receivers of transceivers
JPS534413A (en) Hybrid multiplez transmission systen for broacdast lines and telephone lines
JPS5624805A (en) Active ultrahigh frequency wave antanna for movable ratio receiver
JPS5612146A (en) Carrier communication system
JPS52149403A (en) Mobile communication system
JPS5411606A (en) Radio communication system