Better Wireless LAN Coverage through Ventilation Duct Antenna Systems

This work presents fair comparisons of a ventilation duct based antenna system to a conventional wireless LAN access point installation, both inside and in areas around the outside of a building. We present comparisons of 3 different access point locations using signal strength measurements at nearly 100 different locations in the building for each location. We also present signal strength measurement comparisons as a user gets further and further away from the building outdoors. Lastly, we use this data to show that ventilation duct antenna systems can provide better signal strength inside a building resulting in improved user experience and in reduced system installation and life-cycle cost.