JPS5783938A - Diversity system by leakage coaxial cable - Google Patents

Diversity system by leakage coaxial cable

Info

Publication number
JPS5783938A
JPS5783938A JP55159416A JP15941680A JPS5783938A JP S5783938 A JPS5783938 A JP S5783938A JP 55159416 A JP55159416 A JP 55159416A JP 15941680 A JP15941680 A JP 15941680A JP S5783938 A JPS5783938 A JP S5783938A
Authority
JP
Japan
Prior art keywords
leakage coaxial
coaxial cables
coaxial cable
mobile station
leakage
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
JP55159416A
Other languages
Japanese (ja)
Other versions
JPH0120813B2 (en
Inventor
Jiro Mizukawa
Tetsuya Yuge
Shin Sasaki
Tadashi Nakamura
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.)
JAPANESE NATIONAL RAILWAYS<JNR>
Hitachi Denshi KK
Japan National Railways
Mitsubishi Electric Corp
Nippon Kokuyu Tetsudo
Original Assignee
JAPANESE NATIONAL RAILWAYS<JNR>
Hitachi Denshi KK
Japan National Railways
Mitsubishi Electric Corp
Nippon Kokuyu Tetsudo
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 JAPANESE NATIONAL RAILWAYS<JNR>, Hitachi Denshi KK, Japan National Railways, Mitsubishi Electric Corp, Nippon Kokuyu Tetsudo filed Critical JAPANESE NATIONAL RAILWAYS<JNR>
Priority to JP55159416A priority Critical patent/JPS5783938A/en
Publication of JPS5783938A publication Critical patent/JPS5783938A/en
Publication of JPH0120813B2 publication Critical patent/JPH0120813B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B5/28—

Abstract

PURPOSE:To prevent the level of a reception input generated at the position of a mobile station from dropping, by laying a subordinate leakage coaxial cable along the connection points of leakage coaxial cables. CONSTITUTION:At the installation place of a repeater 9 for leakage coaxial cables 5-8, a subordinate leakage coaxial cable 16 is laid. A mobile station 10 while moving along the leakage coaxial cables has a communication with a base station 23, but the phase adjustment of signals of the leakage coaxial cables 7 and 8 is difficult near a point E where the repeater 9 is installed, and transmission and reception levels may drop extremely. Signals transmitted from the transmitter 11, antenna common device 13, and antenna 14 of the mobile station 10 are coupled with the leakage coaxial cables 7 and 8 and also received by different receivers 3 and 20 of the base station 23 through the auxiliary leakage coaxial cable 16 and a frequency converter 17 to be synthesized by a synthesizer 21, thus performing diversity reception.
JP55159416A 1980-11-14 1980-11-14 Diversity system by leakage coaxial cable Granted JPS5783938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55159416A JPS5783938A (en) 1980-11-14 1980-11-14 Diversity system by leakage coaxial cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159416A JPS5783938A (en) 1980-11-14 1980-11-14 Diversity system by leakage coaxial cable

Publications (2)

Publication Number Publication Date
JPS5783938A true JPS5783938A (en) 1982-05-26
JPH0120813B2 JPH0120813B2 (en) 1989-04-18

Family

ID=15693264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159416A Granted JPS5783938A (en) 1980-11-14 1980-11-14 Diversity system by leakage coaxial cable

Country Status (1)

Country Link
JP (1) JPS5783938A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129727A (en) * 1986-11-19 1988-06-02 Mitsubishi Electric Corp Mobile body communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63129727A (en) * 1986-11-19 1988-06-02 Mitsubishi Electric Corp Mobile body communication system

Also Published As

Publication number Publication date
JPH0120813B2 (en) 1989-04-18

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