Wireless signal distribution in a building HVAC system

Details Wireless signal distribution in a building HVAC system Wireless signal distribution in a building HVAC system

1998-05-29

1999-11-30

Gensler, Paul

Wave transmission lines and networks

Long line elements and components

Waveguide elements and components

455 31, H01P 512, H04H 110, H04H 114

Patent

active

059949848

ABSTRACT:
The present invention is directed to a system for using the ductwork of a building for transmitting electromagnetic radiation. The system includes a device for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation. The system also includes a bi-directional coupler positioned to re-radiate the electromagnetic radiation around an obstacle. The system further includes a device for enabling the electromagnetic radiation to propagate beyond the ductwork. The present invention is also directed to a method for transmitting electromagnetic radiation using the ductwork of a building and a method for designing a system for transmitting electromagnetic radiation in the ductwork of a building.

REFERENCES:
patent: 4688007 (1987-08-01), Krill
patent: 5218356 (1993-06-01), Knapp
patent: 5450615 (1995-09-01), Fortune et al.
Diehl et al., "Wireless RF Distribution in Buildings using Heating and Ventilation Ducts," 8.sup.th Virginia Tech/MPRG Symposium on Wireless Personal Communications, Jun. 1998.

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