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Wireless signal distribution in a building HVAC system

Daniel D. Stancil. Wireless signal distribution in a building HVAC system. United States Patent 5994984, Filed 29 May 1998, Issued 30 November 1999.

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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.

@PATENT{stancil_patent_1999,
  nationality = {United States},
  number = {5994984},
  year = {1999},
  yearfiled = {1998},
  author = {Daniel D. Stancil},
  title = {Wireless signal distribution in a building HVAC system},
  day = {30},
  month = nov,
  dayfiled = {29},
  monthfiled = {May},
  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.},
  owner = {henty},
  timestamp = {2006.10.03},
  url = {http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=5994984.PN.&OS=PN/5994984&RS=PN/5994984},
}

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