Information transmission device and method for systems using rad

Communications: radio wave antennas – Antennas – Slot type

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343767, 342457, H01Q 1310

Patent

active

060346469

ABSTRACT:
In an information transmission device and method for systems using radiating waveguides along which a mobile travels, an unmodulated carrier wave is injected into the radiating waveguide. Some of the energy of the unmodulated carrier wave is sampled locally along the radiating waveguide. A local modulation signal representing information addressed to the mobile modulates the unmodulated carrier wave. The modulated carrier wave is radiated to the mobile.

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Duhot et al, "Iago: Transmission on Radiating Waveguides in the Transport Field", GEC Alsthom Technical Review, No. 6, Jul. 1991, Paris, France, pp. 59-66.

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