Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1996-05-17
1997-12-09
Eisenzopf, Reinhard J.
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 25, H04B 714
Patent
active
056970633
ABSTRACT:
A master station master antenna having a high directivity in an upper direction, a slave station and a slave antenna having a high directivity in the high direction are arranged on a floor of a room, and furniture is arranged on the floor between the master antenna and the slave antenna. Also, a master reflecting mirror is arranged on a ceiling of the room placed just above the master antenna, and a slave reflecting mirror is arranged on the ceiling placed just above the slave antenna. When an electric wave having a data signal is radiated from the master station, the electric wave radiated in the upper direction passes through a first transmission route and is reflected by the master reflecting mirror toward a horizontal direction. Thereafter, the electric wave passes through a second transmission route near the ceiling and is again reflected by the slave reflecting mirror toward the lower direction. Thereafter, the electric wave passes through a third transmission route and is received by the slave antenna because the slave antenna has a high directivity to receive the electric wave transmitted from the upper direction. Therefore, the data signal can be reliably detected by the slave station without being interrupted by the furniture.
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Harry Stockman, "Communication by means of reflected power," The Institute of Radio Engineers, Oct. 1948.
Hasegawa Makoto
Kishigami Takaaki
Makimoto Mitsuo
Sagawa Morikazu
Bhattacharya Sam
Eisenzopf Reinhard J.
Matsushita Electric - Industrial Co., Ltd.
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