发明名称 |
Hochfrequenz-Nachrichtenuebertragungssystem fuer mobile Teilnehmer |
摘要 |
A radio communication transmission system for moving vehicles following a track wherein an intermediate frequency communication signal is transmitted on a leaky coaxial cable at a low loss from a ground station. This signal is periodically amplified, if required, to compensate for attenuation, and is also periodically frequency converted into a radio frequency signal which is transmitted along with the aforesaid intermediate frequency signal on the same leaky coaxial cable for uniform leakage therealong for coupling to an antenna on a vehicle traveling adjacent the leaky coaxial cable. A transmitter is provided on the moving vehicle and transmits a second radio frequency signal from the vehicle to couple the signal to the leaky coaxial cable for transmission thereon. This second radio frequency signal is then frequency converted to a second intermediate frequency signal for transmission at a low loss thereafter on the same leaky coaxial cable to a ground station for reception. |
申请公布号 |
DE1762741(A1) |
申请公布日期 |
1970.09.17 |
申请号 |
DE19681762741 |
申请日期 |
1968.08.16 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES,LTD. |
发明人 |
BABA,TAKESHI;SHIBUYA,KENJI;NAGAO,TAICHIRO |
分类号 |
H04B5/00 |
主分类号 |
H04B5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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