Wireless signal distribution in a building HVAC system

A system for distributing electromagnetic radiation through a building, comprising:

• at least one HVAC duct;
• means for introducing the electromagnetic radiation into said duct such that said duct acts as a waveguide for the electromagnetic radiation;
• bi-directional coupler means for re-radiating the electromagnetic radiation around an obstacle in said duct;
• and
• means for enabling the electromagnetic radiation to exit said duct.

A method for transmitting electromagnetic radiation using the ductwork of a building, comprising the steps of:

• introducing the electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation;
• re-radiating the electromagnetic radiation in a plurality of directions around an obstacle in the ductwork;
• and
• enabling the electromagnetic radiation to exit the ductwork.

A system for transmitting electromagnetic radiation in a heating, ventilation, and air conditioning duct, comprising:

• a transmitter located in the duct, said transmitter for transmitting the radiation;
• a bi-directional amplifier located in the duct, said amplifier for re-radiating the electromagnetic radiation around an obstacle in the duct;
• and
• a receiver located in the duct, said receiver for receiving the radiation.