Vehicle device for data transmission to a stationary beacon, and

Details Vehicle device for data transmission to a stationary beacon, and Vehicle device for data transmission to a stationary beacon, and

1997-03-27

1999-01-19

Le, Thanh Cong

Telecommunications

Transmitter and receiver at same station

455106, 455107, 375272, 342 42, 342 51, H04B 138

Patent

active

058624562

ABSTRACT:
A device of a vehicle for data transmission to a stationary beacon 91), which has a transceiver, comprising an on-board unit (2) with an antenna (6) for receiving a continuous signal (5), broadcast by the beacon (1), and for transmitting the received signal (5) back after modulation with a data signal (i(t)), is characterized in that the signal (7) transmitted back by the on-board unit (2) is a double-sideband signal. In that case, the on-board unit (2) can be designed as extremely simply and in the simplest case comprises a diode (9) connected to the base of the antenna (6).

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