Build your own:

http://www.sciencebuddies.org/science-fair-projects/project_ideas/CompSci_p010.shtml

The Point of a Parabola: Focusing signals for a better wireless network

Research Questions:
-How much if an improvement will it make? Is it worth effort and money?
-How do I carry out the experiment?
-What can we do to minimise the external factors affecting the signal of the wireless network?
-What are the factors affecting the signal of the wireless network? (Both negatively and positively)
-Will it make a difference if a metal other than aluminium is used to deflect the signals?
-Will the thickness of the metal make a difference?

Independent Variable(s):
Angle of the reflector

Dependent Variable(s):
The strength of the wireless network signal

Hypothesis:
The wireless signal strength will be the strongest when the receiver is in full view of the signals and when the angle is such that the reflector reflects the signal directly to the receiver.