发明名称 |
ULTRA-HIGH FREQUENCY COMMUNICATION INSTALLATION |
摘要 |
A communication installation for use in a site having underground galleries, for information exchanges, comprises a repeater connected to a wired distribution network. The repeater is arranged for receiving messages which arrive over the wired network at a first frequency and for retransmitting the messages over the network at a second frequency different from the first frequency. The network comprises non-radiating cable sections, radiating cable sections capable to radiate at the second frequency and to collect radiation energy at the first frequency from a portable emitter-receiver set placed nearby. The network further comprises terminal antennae for emitting at the second frequency and collecting energy at the first frequency.
|
申请公布号 |
US5230080(A) |
申请公布日期 |
1993.07.20 |
申请号 |
US19910665246 |
申请日期 |
1991.03.06 |
申请人 |
COMPAGNIE GENERALE DES MATIERES NUCLEAIRES |
发明人 |
FABRE, JEAN;CHARLES, MICHEL |
分类号 |
H04B5/00;H04B7/15 |
主分类号 |
H04B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|